path: root/ChangeLog.1

2019-04-12         Arnold D. Robbins     <arnold@skeeve.com>

        * README: Updated in preparation for a release.

2019-04-07         Arnold D. Robbins     <arnold@skeeve.com>

        * config.sub: Updated from GNULIB.

2019-04-05         Arnold D. Robbins     <arnold@skeeve.com>

        *  eval.c  (load_casetable): Always use the locale's set-
tings.           (set_IGNORECASE):  Don't  call   load_casetable.
        *  main.c (main): Call load_casetable if in a single-byte
locale.

2019-03-22         Arnold D. Robbins     <arnold@skeeve.com>

        * config.guess: Updated from GNULIB.

2019-03-17         Arnold D. Robbins     <arnold@skeeve.com>

        * configure.ac: Fix test for ZOS_FAIL.

2019-03-15         Arnold D. Robbins     <arnold@skeeve.com>

        * Makefile.am (pc/Makefile.tst): Yet another fix for out-
        of-tree  builds.  Thanks  to `make distcheck'.          *
configure.ac: Update version for next tar ball.

2019-03-03         Arnold D. Robbins     <arnold@skeeve.com>

        * main.c (usage): Fix help message.

2019-03-01         Arnold D. Robbins     <arnold@skeeve.com>

        * Makefile.am (pc/Makefile.tst): Make sure pc/  directory
exists          first. Needed for `make distcheck'. Not sure what
changed such         that this is only showing up now.          *
configure.ac: Update version for next test tarball.

2019-02-28         Arnold D. Robbins     <arnold@skeeve.com>

        * README.cvs: Removed. Six years is long enough.

2019-02-25         Arnold D. Robbins     <arnold@skeeve.com>

        * config.guess: Updated from GNULIB.

2019-02-25         Arnold D. Robbins     <arnold@skeeve.com>

        * NEWS: Updated.

2019-02-25         Arnold D. Robbins     <arnold@skeeve.com>

        Small   profiling   improvements.   Suggested   by  mukti
        <ferida.cicatriz@gmail.com>.

        * main.c (parse_args): Add warnings that --profile  over-
rides          --pretty-print.          (main): Move setuid warn-
ing to after all the warnings for conflicting          arguments.
        *  profile.c  (pprint):  Don't print extra trailing space
after return         and exit if no  value  associated  with  the
statement.

2019-02-25         Arnold D. Robbins     <arnold@skeeve.com>

        *  configure.ac:  Set  ZOS_FAIL if on ZOS to improve test
suite on that         platform.          * awk.h  (is_valid_iden-
tifier):  Move declaration outside ifdef DYNAMIC.          * com-
mand.y: Fix test for EBCDIC to use  USE_EBCDIC.           *  cus-
tom.h:  Remove definitions of __builtin_expect.          * eval.c
(update_ERRNO_string): Add untested and disabled  code  for  z/OS
        to  remove  leading  IBM error codes.  This might one day
make more of the         tests pass on z/OS.

2019-02-20         Arnold D. Robbins     <arnold@skeeve.com>

        * awk.h (is_valid_identifier): Move  declaration  outside
of         `#if DYNAMIC'.  Thanks to Daniel Richard G.          *
custom.h (builtin_expect): Remove definitions,  now          han-
dled by support/cdefs.h.

2019-02-17         Arnold D. Robbins     <arnold@skeeve.com>

        Fix  debugger  eval  command so that return from a called
        user-defined function  works.  Thanks  to  Lothar  Langer
        <lotharla@gmail.com> for the report.

        *     awk.h    (Op_K_return_from_eval):    New    opcode.
        (parse_program):   Add    boolean    second    parameter,
`from_eval'.           *  awkgram.y (called_from_eval): New vari-
able         (Grammar): Check it for return statements. If  true,
change     the             opcode    to    Op_K_return_from_eval.
        (parse_program):  Set  called_from_eval   to   value   of
from_eval   parameter.            *  debug.c  (pre_execute_code):
Change  test  for  Op_K_return  to  test           for   Op_K_re-
turn_from_eval.           (do_eval): Call parse_program with sec-
ond parameter true.          * eval.c (optypetab): Add entry  for
Op_K_return_from_eval.          * interpret.h (r_interpret): Dit-
to: can't-happen error.          * main.c (main): Call parse_pro-
gram with second parameter false.          * NEWS: Updated.

2019-02-15         Arnold D. Robbins     <arnold@skeeve.com>

        *  awkgram.y:  If  profiling, correctly turn `print' into
`print $0'.          Thanks to Hermann Peifer for the bug report.
        * TODO: Updated.

2019-02-11         Arnold D. Robbins     <arnold@skeeve.com>

        * configure.ac: Update version for next test tarball.

2019-02-07         Arnold D. Robbins     <arnold@skeeve.com>

        *  NEWS:  Updated.          * config.guess, config.rpath,
config.sub: Updated from GNULIB.

2019-02-05         Arnold D. Robbins     <arnold@skeeve.com>

        * Makefile.am (EXTRA_DIST): Add NEWS.1.

2019-02-04         Arnold D. Robbins     <arnold@skeeve.com>

        * NEWS.1: Rotated in from NEWS.          *  NEWS:  Short-
ened  to  start  over  again  with  5.0 changes.          * ext.c
(is_valid_identifier):   Move   outside   of   ifdefs   so   that
        DJGPP (and other code) can find it.

2019-02-03         Arnold D. Robbins     <arnold@skeeve.com>

        *  awkgram.y  (snode): Disallow @/.../ as second param of
index, also.          * TODO: Updated.

2019-02-02         Arnold D. Robbins     <arnold@skeeve.com>

        *  awkgram.c,  command.c:  Regenerated  with  Bison  3.3.
        * NEWS: Updated.

2019-02-02  Eli Zaretskii  <eliz@gnu.org>

        * debug.c (execvp) [__MINGW32__]: Redirect to w32_execvp.
        (restart): No need for MinGW-specific code anymore.

        * nonposix.h: If setlocale is already  a  defined  macro,
#undef  it          before  redefining.   This avoids compilation
warnings if someone         tries to compile Gawk with  Gettext's
libintl.h, which redirects         setlocale to its own function.
        Reported by Budi <budikusasi@gmail.com>.

        *  debug.c  [__MINGW32__]:  Prototype   for   w32_execvp.
        (restart)  [__MINGW32__]:  Call w32_execvp instead of ex-
ecvp.  Don't         type-cast d_argv anymore.

2019-01-27         Arnold D. Robbins     <arnold@skeeve.com>

        * awkgram.y (qualify_name):  Return  duplicated  strings.
        (yylex):  Qualify  names  before returning either NAME or
FUNC_CALL.          (Grammar): Replace  qualified_name  non-token
with NAME, remove         `qualified_name' production.

2019-01-27         Arnold D. Robbins     <arnold@skeeve.com>

        *  Makefile.am,  NEWS, awkgram.y, cint_array.c, custom.h,
debug.c,         eval.c, ext.c,  gawkapi.c,  int_array.c,  inter-
pret.h,  nonposix.h,          profile.c, re.c, replace.c, str_ar-
ray.c, symbol.c: Update         copyright year.

2019-01-26         Arnold D. Robbins     <arnold@skeeve.com>

        * Makefile.am (pc/Makefile.tst): Fix to work for  out  of
tree builds.

2019-01-25         Arnold D. Robbins     <arnold@skeeve.com>

        *  main.c  (UPDATE_YEAR): Bump to 2019.          (usage):
Revise help message a little bit.          *  configure.ac:  Bump
version to start a release spiral.          * NEWS: Updated.

2019-01-24         Arnold D. Robbins     <arnold@skeeve.com>

        *   awkgram.y   (Grammar):  Add  new  production  `quali-
fied_name' which         is NAME + qualification call. Use it ev-
erywhere  that NAME was         used, except for function parame-
ters.

2019-01-23         Arnold D. Robbins     <arnold@skeeve.com>

        * profile.c (adjust_namespace): Check for all upper  case
        identifiers so we don't get things like awk::NF.

2019-01-23         Arnold D. Robbins     <arnold@skeeve.com>

        *  symbol.c  (lookup): Remove second `do_qualify' parame-
ter.          Remove calls to `fix_up_namespace'.  If name starts
with          "awk::" just lookup the compnent name.          Ad-
just all calls to `lookup' in  other  files.           (install):
Don't use `fix_up_namespace'.          (fix_up_namespace): Remove
function.          * awk.h (lookup): Adjust declaration.

2019-01-23         Arnold D. Robbins     <arnold@skeeve.com>

        * awkgram.y (qualify_name): Don't qualify a name if  it's
        a parameter.

2019-01-21         Arnold D. Robbins     <arnold@skeeve.com>

        *  awkgram.y  (Grammar):  Use qualify_name for array sub-
script         expressions. Fixes  the  last  leak  in  the  test
suite.           * awk.h (is_all_upper): Declare.          * sym-
bol.c  (is_all_upper):  Remove   static.            *   awkgram.y
(is_all_upper):  Remove.           (Grammar):  Clean  up  `#if 0'
code.

2019-01-20         Arnold D. Robbins     <arnold@skeeve.com>

        Restore functionality.

        * awkgram.y (qualify_name): Remove `is_var' param, always
check           for   all   upper   case.   Adjust   all   calls.
        (Grammar): Do qualify_name for function calls also.

2019-01-19         Arnold D. Robbins     <arnold@skeeve.com>

        Continue fixing memory leaks.

        *  awk.h   (set_current_namespace):   Declare   function.
        *  awkgram.y: Change all assignments of current_namespace
to calls         to  set_current_namespace.           (is_all_up-
per, qualify_name): New functions.          (in_function): Change
type to bool, and  fix  usages.           (Grammar):  Use  quali-
fy_name  on  variables  and  function  names.           * main.c:
Change all assignments of current_namespace to  calls          to
set_current_namespace.             (set_current_namespace):   New
function.          * profile.c  (pp_namespace):  Don't  free  old
current_namespace. Add         comment explaining why.

2019-01-18         Arnold D. Robbins     <arnold@skeeve.com>

        Start fixing memory leaks related to namespaces.

        * awkgram.y (Grammar): At simple_variable -> NAME, quali-
fy names          before  lookup/install.           (next_source-
file): Check if need to free current_namespace before         as-
signing to it.          (yylex):  Fix  length  of  string  to  be
dup'ed    before    returning            NAME    or    FUNC_CALL.
        (set_namespace): Always free  ns->lextok,  adjust  memory
allocations           appropriately.           *  main.c  (main):
Check if need to free current_namespace before          assigning
to  it.          * profile.c (pp_namespace): Ditto. (This may not
be necessary.)

2019-01-18         Arnold D. Robbins     <arnold@skeeve.com>

        * debug.c (do_set_var): Add comments before calls to  as-
soc_set.           * interpret.h (r_interpret): For Op_sub_array,
deref the subscript         appropriately. Thanks to Andy  Schorr
for the catch.

2019-01-15         Arnold D. Robbins     <arnold@skeeve.com>

        *  array.c  (asort_actual):  Use  assoc_set  in 2 places.
        * awk.h (assoc_set): Improve leading comment.           *
debug.c  (do_set_var):  Use  assoc_set  in  2  places.          *
field.c (set_element, update_PROCINFO_str,  update_PROCINFO_num):
        Use  assoc_set in each.          * gawkapi.c (api_set_ar-
ray_element): Use  assoc_set.           *  interpret.h  (r_inter-
pret): Use assoc_set.          * main.c (init_args, load_environ,
load_procinfo_argv):         Use assoc_set  in  each.           *
mpfr.c  (do_mpfr_intdiv):  Use  assoc_set in 2 places.          *
str_array.c (str_lookup): Fix leading  comment.           *  sym-
bol.c (install): Use assoc_set.

2019-01-15          Andrew  J. Schorr      <aschorr@telemetry-in-
vestments.com>

        * builtin.c (do_match, do_intdiv):  Remove  unused  `sub'
and  `lhs'         variables, since assoc_set is now doing all of
the work.

2019-01-15         Andrew J.  Schorr       <aschorr@telemetry-in-
vestments.com>

        *  awk.h  (assoc_set): Move the definition lower down be-
cause it         needs to be after unref is declared.           *
builtin.c    (do_match):    Use    assoc_set    in    3   places.
        (do_intdiv):    Use    assoc_set     in     2     places.
        (do_typeof): Use assoc_set in 2 places.

2019-01-14          Andrew  J. Schorr      <aschorr@telemetry-in-
vestments.com>

        * awk.h (assoc_set): Add new inline function  to  set  an
array  element          to  eliminate code duplication and reduce
the chance of memory leaks.

2019-01-14         Andrew J.  Schorr       <aschorr@telemetry-in-
vestments.com>

        *  builtin.c (do_typeof): Fix memory leak when populating
the         optional array, and make  sure  to  call  the  astore
method.

2019-01-14         Arnold D. Robbins     <arnold@skeeve.com>

        *   builtin.c   (do_intdiv):  Add  unref  of  subscripts.
        * mpfr.c (do_mpfr_intdiv): Ditto.          Thanks to Andy
Schorr for noticing.

2019-01-09          Andrew  J. Schorr      <aschorr@telemetry-in-
vestments.com>

        * awkgram.y (tokentab): Indicate that typeof may  take  2
arguments.           (snode):  Add  support for typeof's optional
2nd array argument.          * builtin.c (do_typeof): Add support
for  optional  2nd  array  arg,          returning  flag info for
scalars and backend array type for arrays.

2019-01-09         John E. Malmberg      <wb8tyw@qsl.net>

        * awk.h: For non GCC, have __attribute__ definition match
        support/regex_internal.h exactly.

2019-01-08         Arnold D. Robbins     <arnold@skeeve.com>

        *  interpret.h  (r_interpret): For a translatable string,
only copy         the gettext return value if it's different from
the original.          Otherwise, use the original.

2019-01-07          Andrew  J. Schorr      <aschorr@telemetry-in-
vestments.com>

        Use a struct instead of an array  to  contain  the  array
methods         for improved code clarity and flexibility.

        * awk.h (array_funcs_t): Define new struct to contain the
array          methods.           (NODE):  Change  type  of   ar-
ray_funcs (sub.nodep.l.lp) from `afunc_t *'         to `const ar-
ray_funcs_t  *'  (from  a  pointer  to  an  array   of   function
        methods to a pointer to a struct containing the methods).
        (a*_ind): Remove obsolete  method  array  index  defines.
        (a*):  Redefine  array  methods to use struct members in-
stead  of           array   elements.            (str_array_func,
cint_array_func,  int_array_func): Change type         from array
of  afunc_t  to  'const  array_funcs_t'.            (register_ar-
ray_func):   Remove   global  declaration,  since  this  function
        is  called  only  inside  array.c.            *   array.c
(null_array_func):  Change  from  array  of  methods to a struct.
        (array_types): Now an array of pointers to array_funcs_t.
        (AFUNC):  Remove  obsolete  macro.          (register_ar-
ray_func): Change scope to static, and change argument         to
a  pointer  to  array_funcs_t instead of a pointer to an array of
        methods.          (array_init): Modify  calls  to  regis-
ter_array_func to pass the address         of the new array meth-
od structs.          (make_array): Set array_funcs to &  null_ar-
ray_func.           (null_lookup): Modify to use new array method
structs.           (assoc_list):  Update  cint  check  to  use  &
cint_array_func.           * str_array.c (str_array_func, env_ar-
ray_func):  Change  from  array  of          methods  to  an  ar-
ray_funcs_t struct.          (env_clear, init_env_array): Set ar-
ray_funcs to & env_array_func.           *  int_array.c  (int_ar-
ray_func):  Change  from  array  of  methods  to  an          ar-
ray_funcs_t struct.           *  cint_array.c  (cint_array_func):
Ditto.          (cint_lookup): When setting xn->array_funcs, must
now use &.          (cint_dump):  Compare  xn->array_funcs  to  &
int_array_func.

2019-01-06          Andrew  J. Schorr      <aschorr@telemetry-in-
vestments.com>

        * array.c (do_delete): If the array is now  empty,  reset
it  to the         null implementation to avoid being locked into
the backend         optimization previously selected.

2019-01-06         Andrew J.  Schorr       <aschorr@telemetry-in-
vestments.com>

        Remove  pointless  alength macro/method that uses a need-
less         function call indirection to access  the  table_size
value.

        * awk.h (alength, alength_ind): Remove these defines, and
also renumber         the array_funcs items after that,  and  use
the <blah>_ind define to         define <blah> instead of repeat-
ing the hardcoded numeric  value.           (NUM_AFUNCS):  Remove
unused  define.           (assoc_length):  Redefine to access ta-
ble_size  directly.           (null_length):  Remove   prototype.
        *  array.c  (null_array_func):  Remove null_length entry.
        (null_length):  Remove  obsolete   function.            *
cint_array.c   (cint_array_func):   Remove   null_length   entry.
        * int_array.c (int_array_func): Remove null_length entry.
        *  str_array.c  (str_array_func,  env_array_func): Remove
null_length         entry.          * gawkapi.c  (api_flatten_ar-
ray_typed):  Use  the  assoc_empty  macro to         check for an
empty array instead of comparing table_size to 0.          * sym-
bol.c (lookup, check_param_names): Ditto.

2018-12-31         Arnold D. Robbins     <arnold@skeeve.com>

        Clean up namespace handling for the profiler.

        *  awkgram.y  (make_pp_namespace):  Remove  function, not
needed.          (set_namespace): Use estrdup to save the current
namespace.           * main.c (main): Before dumping the program,
set current_namespace         to awk_namespace.           *  pro-
file.c   (pprint):   Use   "awk"  for  comparison,  not  "awk::".
        (pp_namespace): Just print the  name  in  the  @namespace
line.          (adjust_namespace): Adjust for the fact that name-
spaces no longer         have the trailing "::".

2018-12-30         Arnold D. Robbins     <arnold@skeeve.com>

        *  awk.h  (check_qualified_name):   Remove   declaration.
        *   awkgram.y   (check_qualified_special):  Renamed  from
        check_qualified_name and  made  static.           *  pro-
file.c (pprint): Improve comment on namespace list.

2018-12-21         Arnold D. Robbins     <arnold@skeeve.com>

        * configure.ac: Remove -O only if .developing has 'debug'
in it.

2018-12-18         Arnold D. Robbins     <arnold@skeeve.com>

        * Makefile.am (distclean-local): Remove .deps directory.

2018-12-14         Arnold D. Robbins     <arnold@skeeve.com>

        * config.guess: Updated from GNULIB.

2018-12-12         Arnold D. Robbins     <arnold@skeeve.com>

        * TODO: Updated.

2018-12-12         Andrew J.  Schorr       <aschorr@telemetry-in-
vestments.com>

        *   configure.ac   (AC_CHECK_FUNCS):  Check  for  timegm.
        * builtin.c (mktime_tz): Remove  function;  we  will  use
timegm  instead.          (do_mktime): Replace 'mktime_tz(& then,
"UTC+0")' with 'timegm(& then)'.           *  protos.h  (timegm):
Add  timegm  proto  on  systems  lacking it.          * replace.c
(timegm): Include missing_d/timegm.c if needed.

2018-12-12         Arnold D. Robbins     <arnold@skeeve.com>

        * NEWS: Updated some.

2018-12-12         Arnold D. Robbins     <arnold@skeeve.com>

        * awk.h: Add new Op_K_namespace opcode for pretty  print-
ing.           *  awkgram.y (namespace_chain): New variable, list
of successive         @namespace directives seen, for the  pretty
printer.                   (namespace_comment):          Removed.
        (set_namespace): Takes comment as second argument, builds
the  chain.           (mk_function, append_rule): Adjust to store
the chain.           *  debug.c  (print_ns_list):  New  function.
        (print_instruction):  Adjust  Op_rule  and Op_func to use
print_ns_list.          Add case for  Op_K_namespace.           *
eval.c  (optable):  Add  entry  for Op_K_namespace.          (op-
code2str, op2str): Edit /  add  leading  comments,  respectively.
        *    profile.c    (pp_namespace_list):    New   function.
        (pprint): Adjust code to call pp_namespace_list.

2018-12-06         Arnold D. Robbins     <arnold@skeeve.com>

        * configure.ac: Add -ggdb3 to CFLAGS  if  developing  and
remove          -O2  from  Makefile, extension/Makefile, and sup-
port/Makefile.          * config.guess, config.sub: Updated  from
GNULIB.

2018-12-06         Arnold D. Robbins     <arnold@skeeve.com>

        *    awkgram.y    (namespace_comment):    New   variable.
        (Grammar): Handle comments after  @namespace  statements.
        (mk_function):  Add any comment onto the saved namespace.
        (append_rule):  Ditto.           *  profile.c   (pp_name-
space):  Add  second  argument for a comment.          Adjust all
calls.

2018-12-02         Arnold D. Robbins     <arnold@skeeve.com>

        * awkgram.y (mk_program): Add  in  leading  and  trailing
comments         when program block is empty.

2018-11-29         Arnold D. Robbins     <arnold@skeeve.com>

        * awkgram.y (first_rule, func_first): Remove unused vari-
ables.          (Grammar): Simplify rule for range pattern.

2018-11-28         Arnold D. Robbins     <arnold@skeeve.com>

        * awkgram.y (debug_print_comment): New  macro  and  func-
tion.          (load_library): Rework to not try to open the file
if pretty printing.          (append_rule):  Adjust  handling  of
interblock_comment.

2018-11-27         Arnold D. Robbins     <arnold@skeeve.com>

        *  awkgram.y  (Grammar):  In  rule  for function, set in-
terblock_comment.          (mk_function): Hook interblock_comment
onto  fi->comment,  merge it         with the existing one first,
if any. Append trailing_comment.

2018-11-26         Arnold D. Robbins     <arnold@skeeve.com>

        * main.c (platform_name): Add os390. Treat Cygwin and Mac
OS X         as POSIX, per discussion with the dev team.

        Unrelated:

        *  profile.c (print_comment): Indent for chained comment.
        * awkgram.y (load_library): Return early if  just  pretty
printing.           (yylex): Fix handling of ?: and allow_newline
etc.

2018-11-25         Arnold D. Robbins     <arnold@skeeve.com>

        * main.c (platform_name): New function returning platform
name.           (load_procinfo):  Use  `platform_name()'  to  add
"platform" element.          Thanks to Eli Zaretskii for the sug-
gestion.          * NEWS: Updated with info about PROCINFO["plat-
form"].

2018-11-25         Arnold D. Robbins     <arnold@skeeve.com>

        * config.sub: Updated from GNULIB.

2018-11-24         Arnold D. Robbins     <arnold@skeeve.com>

        * awkgram.y  (interblock_comment,  pending_comment):  New
variables.           (Grammar,  mk_program,  add_rule): Adjust to
use them. Changes         handle comments at the outermost level,
between blocks and functions.

2018-11-24         Arnold D. Robbins     <arnold@skeeve.com>

        *  main.c  (arg_assign):  Allow  assigning strongly typed
regexp         constants to variables on  the  command  line  and
with -v.          Thanks to Peng Yu <pengyu.ut@gmail.com> for the
report.

2018-11-17         Arnold D. Robbins     <arnold@skeeve.com>

        *  awkgram.c,  command.c:   Updated   to   Bison   3.2.1.
        *   NEWS:   Updated.            *  Makefile.am  (pc/Make-
file.tst): Make it work for out-of-tree          builds.   Thanks
to `make distcheck' for the report.

2018-11-17         Arnold D. Robbins     <arnold@skeeve.com>

        * config.guess: Updated from GNULIB.

2018-11-11         Arnold D. Robbins     <arnold@skeeve.com>

        *  main.c  (usage):  Improve  output  for -Z in the help.
2018-11-11         Arnold D. Robbins     <arnold@skeeve.com>

        *    awkgram.y     (outer_comment):     New     variable.
        (Grammar):  More  changes.  We now get the simple case of
leading         and trailing comments, but not all the cases.

2018-11-11         Arnold D. Robbins     <arnold@skeeve.com>

        *    awkgram.y    (trailing_comment):    New    variable.
        (Grammar):  For  `action', append both trailing comments.
This may         change. For `statements', append  the  value  of
`trailing_comment'          if  set.  At  `statement  :=  l_brace
statements rbrace' save          trailing_comment  from  r_brace.
        (make_braced_statements):  Don't  append the comment from
r_brace         to the statement list.

2018-10-30         Arnold D. Robbins     <arnold@skeeve.com>

        * awk.h (NODE): New field: sub.nodep.x.cmnt,  holds  com-
ment  for          expressions  being  pretty-printed.          *
awkgram.y (Grammar):  For  expression  lists,  save  any  comment
        that came after a comma in the list.          * profile.c
(pp_push): Accept a fourth argument which is any          comment
associated with the expression. Either it's there or         it's
NULL. Save it in the pp_comment field of the node  being  pushed.
        (tabs,  tabs_len,  check_indent_level):  Made into static
globals.          (pprint): Adjust all calls  to  pp_push().  Fix
parenthesization          for  casts  in string lengthes when in-
denting.          (pp_list): If a popped item has a comment,  in-
clude  it  and the         following indentation in the formatted
result.

2018-10-28         Arnold D. Robbins     <arnold@skeeve.com>

        * awkgram.y (include_source): Add second parameter to re-
turn          SRCFILE  pointer.          (Grammar): For @include,
save the comment for later dumping         along with the list of
include   files.            (make_include_comment):  Removed.  No
longer  used.           *  profile.c:  Update   copyright   year.
        (print_include_list): New function.          (dump_prog):
Call it.

2018-10-24         Arnold D. Robbins     <arnold@skeeve.com>

        * main.c (usage): Improve output for -Y and add -Z in the
help.

2018-10-23         Arnold D. Robbins     <arnold@skeeve.com>

        * config.sub: Updated from GNULIB.

2018-10-20         Arnold D. Robbins     <arnold@skeeve.com>

        *  awk.h  (SRCFILE):  Add  comment  field for comments on
@load statements.           *  awkgram.y  (include_source):  Type
change  to boolean.          (load_library): Type change to bool-
ean, additiona parameter to         bring the SRCFILE  struct  up
to  where  we  can  add  the  comment into it.          (make_in-
clude_comment): New function. Not used  yet.           (Grammar):
Add   comment   for   @load   statements.   Start  on  preserving
        @include statements and their comments for  eventual  in-
clusion          into  the  pretty-printed  code.          * pro-
file.c (print_lib_list): Made a  little  smarter  about  printing
        the header and indentation. Print the comment if there is
one.

2018-10-17         Arnold D. Robbins     <arnold@skeeve.com>

        * awk.h (commenttype): Add FOR_COMMENT.           *  awk-
gram.y (Grammar): Handle all the opt_nls cases in         regular
for statements.          * debug.c (print_instruction): Print the
comments  in  Op_K_for.           *  profile.c  (pprint):  Handle
printing comments.

2018-10-17         Arnold D. Robbins     <arnold@skeeve.com>

        * NEWS: Updated.          * awkgram.y (Grammar):  Distin-
guish  `print'  and  `print  $0'  in         what gets profiled /
pretty-printed.          * profile.c (pprint): For case  and  de-
fault, add final newline         if there is no comment to print.

2018-10-16         Arnold D. Robbins     <arnold@skeeve.com>

        *  awkgram.y (Grammar): Improve comment handling for many
plain         statements. Improve handling for case and  default.
        Handle   comments   in   `for   (iggy   in  foo)'  loops.
        (yylex): After a colon, only allow newline if was part of
?:.          (merge_comments): Improve coding so we don't get two
newlines         at the end of a merged comment.           *  de-
bug.c  (print_instruction): Handle comments for case and default.
        Simplify  printing  of  comments.           *   profile.c
(pprint):  Handle  comments for case and default.          Remove
compiler warning in Op_and/Op_or handling.

2018-10-14         Arnold D. Robbins     <arnold@skeeve.com>

        *  awkgram.y  (Grammar):   Add   comment   handling   for
do...while.            Regularize   comments  about  `else  ...'.
        * debug.c (print_instruction): Improve handling  of  com-
ments for         do-while and switch, and in general.          *
profile.c (pprint): Revise for do...while.

2018-10-10         Arnold D. Robbins     <arnold@skeeve.com>

        *  awkgram.y  (make_braced_statements):   New   function.
        (Grammar):  Use  it in the right places instead of inline
code.          * debug.c (print_instruction): For Op_comment, fix
type   string.           *  profile.c  (pprint):  Move  tabs  and
tabs_len to top of function.          For Op_and and Op_or,  han-
dle  comments.   Use  new  check_indent_level         for Op_and,
Op_or and Op_cond_exp.

2018-10-10         Arnold D. Robbins     <arnold@skeeve.com>

        *  debug.c  (print_instruction):  For   Op_comment,   use
print_func         instead of fprintf to print the comment type.

2018-10-10         Arnold D. Robbins     <arnold@skeeve.com>

        *  awkgram.y  (Grammar): For statement -> { statements },
fix comment         handling.  For  `if'  statement  add  comment
support.           * profile.c (pp_print): Print comments associ-
ated with `if' and `else'.

2018-10-09         Arnold D. Robbins     <arnold@skeeve.com>

        * awkgram.y (Grammar): Fix handling  of  empty  statement
(just  a  semi-          colon).          (merge_comments): If no
chained comment and no second comment,         just return early.

2018-10-09         Arnold D. Robbins     <arnold@skeeve.com>

        * awk.h (enum commenttype):  New  enum.           (NODE):
Add it to sub.val.          (EOL_COMMENT, FULL_COMMENT): Replaced
with above enum values.          * awkgram.y (Grammar): Finish up
handling  comments  in  function  headers         and bodies. Get
trailing comments at end of program          (get_comment):  When
doing  comments, if we got EOF, push it back so that         mul-
tiple comments get  merged  together.           (merge_comments):
Allow   second   parameter   to  be  NULL.           *  profile.c
(pp_print):  Change   to   use   above   enum   everywhere.   For
        Op_K_print_rec  produce  plain  `print' instead of `print
$0'. Handle         comments in ?:. Handle printing function com-
ments.          (print_comment): Simplify `after_newline' assign-
ment.  Add assertion         that chaining is only two deep.

2018-10-06         Arnold D. Robbins     <arnold@skeeve.com>

        * awkgram.y (action): Improve handling  of  comments  at-
tached         to braces. Helps with function bodies.

2018-10-04         Arnold D. Robbins     <arnold@skeeve.com>

        * awkgram.y (merge_comments): Change return type to void.
Adjust calls.          (Grammar): For action, pull  comments  out
of braces and stick         into the list. For function_prologue,
get comments from parameters         and ending  newline,  merge,
and  save.  Wherever nls and opt_nls         are used, be sure to
pass their values up via $$. For various         cases  that  can
be   empty,  explicitly  set  $$  =  NULL.           *  profile.c
(pprint):    Get    switch    working.     Get    ?:     working.
        (print_comment):     Print     any    chained    comment.
        (pp_func): Start revising.

2018-10-03         Arnold D. Robbins     <arnold@skeeve.com>

        * awkgram.y: Range  expressions,  enable  comment  stuff.
        Switch statement: start on comment handling.

2018-10-01         Nelson H.F. Beebe     <beebe@math.utah.edu>

        * custom.h (__builtin_expect): Define for non-GNU compil-
ers.

2018-09-27         Andrew J.  Schorr       <aschorr@telemetry-in-
vestments.com>

        * mpfr.c (force_mpnum): Check that base is 10 also before
        computing MPG integer.  Found based on  bug  report  from
        Luu Vinh Phuc <phuclv90@gmail.com>.

2018-09-26         Arnold D. Robbins     <arnold@skeeve.com>

        Add more lint checks.

        *  awk.h  (POP_ARRAY): Add boolean parameter to check for
untyped         value and include lint warning.          * inter-
pret.h  (r_interpret):  Adjust all calls to POP_ARRAY.          *
field.c  (do_split):  Improve  lint  warning   text   for   empty
        third  argument.           * re.c (make_regexp): Add lint
check for ' ' in contents of         regexp to be matched (dynam-
ic or otherwise).

2018-09-23                         Steven                 Packard
<spackard1@bloomberg.net>

        * awk.h: Add `#if !defined(__SUNPRO_C)' around check  for
non-ANSI         compilers.  Needed for some Solaris systems.

2018-09-21         Arnold D. Robbins     <arnold@skeeve.com>

        *   awk.h  (INSTRUCTION):  Add  comment  field  to  carry
        comment  around  during  parsing.           *   awkgram.y
(merge_comments):    New    function.             (split_comment,
check_comment, comment,  prior_comment,          comment_to_save,
program_comment,  function_comment,          block_comment):  Re-
moved.          (grammar): Remove old code and start passing  the
comment         up via yylval and the newlines in the grammar.

2018-09-21         Arnold D. Robbins     <arnold@skeeve.com>

        *  awkgram.y:  Undo  change  of 2016-11-28 to make switch
        head a separate production, in preparation for  revamping
        comment handling.

2018-09-21         Arnold D. Robbins     <arnold@skeeve.com>

        *   re.c   (make_regexp):  Handle  backslash  at  end  of
        input string. Thanks to Anatoly Trosinenko          <ana-
toly.trosinenko@gmail.com> for the report.          Also, improve
the error message when compilation of         the regexp fails.

2018-09-21         Arnold D. Robbins     <arnold@skeeve.com>

        * io.c (fork_and_open_slave_pty): Move  an  errant  close
brace         inside the #endif so that gawk will compile on AIX.
Thanks to         Fredrik  Laurin  <fredrik_laurin@yahoo.se>  for
the report.

2018-09-18         Arnold D. Robbins     <arnold@skeeve.com>

        * NEWS: Fix typo in gettext version.

        Unrelated:

        *  field.c  (get_field): Move lint check for field access
in an         END rule to top level, make wording  more  general.
        *  builtin.c (do_print_rec): Restore check before calling
get_field()         and add do_lint to the condition.

        Unrelated:

        * field.c (set_NF): Add lint warning if decrementing  NF,
which         doesn't work on older Unix awks.

        Unrelated:

        * config.rpath: Sync to GNULIB.

2018-09-16  gettextize  <bug-gnu-gettext@gnu.org>

        *  configure.ac (AM_GNU_GETTEXT_VERSION): Bump to 0.19.8.
        * ABOUT-NLS, config.rpath: Updated by gettext 0.19.8.1.

2018-09-16         Arnold D. Robbins     <arnold@skeeve.com>

        * field.c (get_field): Add lint check if accessing $0 in-
side          an END rule, print a "may not be portable" warning.
        * builtin.c (do_print_rec): Call get_field() uncondition-
ally         in order to do lint check.

        Unrelated:

        *  awkgram.c, command.c: Updated to Bison 3.1.          *
NEWS: Updated.

        Unrelated:

        * Makefile.in, aclocal.m4, configure: Regenerated,  using
        Automake 1.16.1.

        Unrelated:

        * gettext.h: Synced with that from Gettext 0.19.8.1.

2018-09-14         Adrian Bunk           <bunk@debian.org>

        * awk.h (init_debug, debug_prog): Move prototypes to here
from ...          * main.c: ... here.          Thanks to  Michael
Tautschnig for noticing the type mismatch.

2018-09-07         Arnold D. Robbins     <arnold@skeeve.com>

        *   awkgram.y,   debug.c,  ext.c,  gawkapi.c,  gawkapi.h,
        io.c: Remove unneeded in  calls  to  warning(),  fatal(),
        and  lintwarn().          * config.guess, config.sub: Up-
dated from GNULIB.

2018-08-24         Arnold D. Robbins     <arnold@skeeve.com>

        * NEWS: Updated w.r.t. GNULIB regex routines.           *
config.sub: Updated from GNULIB.

2018-08-17         Arnold D. Robbins     <arnold@skeeve.com>

        * config.sub: Updated from GNULIB.

2018-08-10         Arnold D. Robbins     <arnold@skeeve.com>

        * config.guess, config.sub: Updated from GNULIB.

2018-08-05         John E. Malmberg      <wb8tyw@qsl.net>

        *  custom.h:  Define  macros needed for building with gnu
regex.

2018-08-02         Arnold D. Robbins     <arnold@skeeve.com>

        * awkgram.y (yylex): Add lint warning  upon  encountering
escaped          physical newlines in a string.          * node.c
(make_str_node): Ditto.

2018-08-01         John E. Malmberg      <wb8tyw@qsl.net>

        * custom.h: Include fp.h on OpenVMS.           Workaround
for bug in math.h missing some declarations.

2018-07-31         Arnold D. Robbins     <arnold@skeeve.com>

        *  interpret.h (unfield): Add a call to force_string() on
        new  value.  See   test/assignnumfield.awk.   Thanks   to
        Ralph  Corderoy  <ralph@inputplus.co.uk>  for the bug re-
port.

2018-07-31         Arnold D. Robbins     <arnold@skeeve.com>

        Handle newlines in  -v  and  fix  -<newline>.  Thanks  to
        Samy Mahmoudi <samy.mahmoudi@gmail.com> for the report.

        *  awk.h  [ELIDE_BACK_NL]:  New constant.          * awk-
gram.y (yylex):  Disallow  any  physical  newlines  in  a  string
        even   if  escaped,  in  POSIX  mode.           *  main.c
(arg_assign): In POSIX mode disallow physical newline          in
a  -v  value.  Otherwise call make_str_node() with ELIDE_BACK_NL.
        * node.c (make_str_node): Handle ELIDE_BACK_NL.

2018-07-31         Arnold D. Robbins     <arnold@skeeve.com>

        * array.c (cmp_strings): Preserve value of lmin so it can
be  passed          to  memcmp() if IGNORECASE comparison failed.
Thanks to         M. Rashid Zamani <rashid.z@gmail.com>  for  the
report.

2018-07-27         Arnold D. Robbins     <arnold@skeeve.com>

        * re.c (make_regexp): Add warnings for unknown escape se-
quences,         similar to  what  we  already  do  for  strings.
        * awkgram.y: Add lint warning about concatenation as tar-
get         of `>' redirection.  Always  use  Op_parens  so  that
        print "foo" > ("foo" 1) does not warn.

2018-07-26         Arnold D. Robbins     <arnold@skeeve.com>

        * awk.h (_GNU_SOURCE): Don't define it here, it's already
        done in config.h.

2018-07-13         Arnold D. Robbins     <arnold@skeeve.com>

        * builtin.c (format_nan_inf): New  function  to  generate
+nan,  -nan,          +inf, -inf, so that gawk output for NaN and
INF  always  has  a  sign.           Handles  regular  and  MPFR.
        (out_of_range):  New  function to check if a value is out
of range,         both regular and MPFR.           (format_tree):
Use  them  in out of range calculation.  Check for out         of
range in floating point formats also.  Allow  new  *undocumented*
        'P'  flag to not do out of range formantting. Used mainly
for         the test  program.           *  awk.h  (out_of_range,
format_nan_inf):  Declare  functions.          * mpfr.c (mpg_for-
mat_val): Check for out of range and format the          the  re-
sult  appropriately if so.          * node.c (r_format_val): Dit-
to.

2018-06-27         Arnold D. Robbins     <arnold@skeeve.com>

        * config.guess, config.sub: Updated from GNULIB.

2018-06-22         Andrew J.  Schorr       <aschorr@telemetry-in-
vestments.com>

        *  node.c (r_force_number): If strtod returns ERANGE, ac-
cept the         value as being numeric instead of forcing it  to
zero. The impact         is that huge string values that overflow
IEEE 754 limits will now         be converted to inf or -inf  in-
stead  of  0.  Thanks to Daniel         Pettet for reporting this
issue.

2018-06-17         Arnold D. Robbins     <arnold@skeeve.com>

        Fix  a  corner  case   with   EPIPE   to   stdout/stderr.
        Thanks to Peng Yu for the report.

        * io.c (close_io): Add new parameter for indicating EPIPE
happened,         update the code to set  it  if  so.           *
awk.h   (close_io):   Revise   declaration.            *  debug.c
(close_all): Change call to  close_io().           *  interpret.h
(interpret):    For    Op_atexit,   if   got   an   EPIPE,   call
        die_via_sigpipe().

2018-05-24         Arnold D. Robbins     <arnold@skeeve.com>

        * awkgram.y (add_lint): For no-effect  case,  also  check
for          Op_push_i.   Makes statements consisting of a single
constant         trigger the warning.

2018-05-23         Arnold D. Robbins     <arnold@skeeve.com>

        * config.guess, config.sub: Updated from GNULIB.

2018-05-14         Arnold D. Robbins     <arnold@skeeve.com>

        * NEWS: Minor edits.

2018-05-13         Arnold D. Robbins     <arnold@skeeve.com>

        * config.sub: Update from GNULIB.

2018-05-03         Arnold D. Robbins     <arnold@skeeve.com>

        *    Makefile.am    (pc/Makefile.tst):    New     target.
        (dist-hook): Now depends upon pc/Makefile.tst.

2018-04-30         Arnold D. Robbins     <arnold@skeeve.com>

        *  gawkapi.h [dl_load_func]: Minor improvement in version
mismatch          message  as   suggested   by   Manuel   Collado
        <m-collado@users.sourceforge.net>.

2018-04-18         Arnold D. Robbins     <arnold@skeeve.com>

        * config.sub: Updated from GNULIB.

2018-04-14          Manuel Collado       <m-collado@users.source-
forge.net>

        * field.c (reset_record):  Disable  fieldwidth  from  API
        get_record() if $0 is explicitly assigned a new value.

2018-04-02         Arnold D. Robbins     <arnold@skeeve.com>

        *  config.guess,  config.sub,  install-sh:  Updated  from
GNULIB.

2018-04-01         Arnold D. Robbins     <arnold@skeeve.com>

        Fix a nasty MPFR bug in r_dupnode.  If  the  value  being
copied          is  MPFN / MPFR, copy those bits over too. Thanks
to         Noah Dean <N.Dean@gaminglabs.com> for the report.

        * node.c (r_dupnode): Check for MPFN / MPFR and copy  the
bits         over as needed.

        Unrelated:

        * interpret.h (UNFIELD): Turn into an inline function and
        let UNFIELD macro call it, allows stepping in with a  de-
bugger.           (unfield):  Function holding former body of UN-
FIELD macro.

2018-03-26         Arnold D. Robbins     <arnold@skeeve.com>

        Remove the tail recursion optimization. It's fundamental-
ly         broken, in the case where a local var becomes a param-
eter.          Thanks to Denis Shirokov <cosmogen@gmail.com>  for
the report.          See test/tailrecurse.awk.

        *  awk.h [num_tail_calls, tail_call]: Remove definitions.
        * awkgram.y (grammar, mk_function): Remove  code  related
to          the  tail  recursion  optimization.          * eval.c
(dump_fcall_stack):  Adjust  dumping   code   since   no   longer
        looping   through  tail  call  recursion.           (set-
up_frame): Remove code related to the  tail  recursion  optimiza-
tion.          (init_interpret): Ditto.

2018-03-22         Arnold D. Robbins     <arnold@skeeve.com>

        *  configure.ac:  Check  for %a support in system printf.
        * builtin.c (format_tree): Add support for %a and %A, in-
cluding         a lint warning.          * NEWS: Add a note about
%a support.

2018-03-13         Arnold D. Robbins     <arnold@skeeve.com>

        * debug.c, nonposix.h: Update copyright year.

2018-03-11         Arnold D. Robbins     <arnold@skeeve.com>

        * compile, config.guess, config.sub,  configure.ac,  dep-
comp,         install-sh, mkinstalldirs: Updated.

2018-03-05         Arnold D. Robbins     <arnold@skeeve.com>

        *   awk.h   [PUSH_BINDING,  POP_BINDING]:  Moved  to  ...
        *  debug.c:  here.           *  awkgram.y  (yylex):  Make
do_etoa_init  into  a  boolean.           *  io.c (rs1scan): Make
found into a boolean.

2018-02-25         Arnold D. Robbins     <arnold@skeeve.com>

        * 4.2.1: Release tar ball made.

2018-02-25         Arnold D. Robbins     <arnold@skeeve.com>

        * config.guess, config.sub: Updated.

2018-02-23         Arnold D. Robbins     <arnold@skeeve.com>

        * configure.ac: Restore checking for PPC Macintosh before
        checking for MPFR. See README_d/README.macosx for info.

2018-02-21         Arnold D. Robbins     <arnold@skeeve.com>

        *  configure.ac: Remove checking for PPC Macintosh before
        checking for MPFR. Installing a newer  compiler  on  that
        system allows things to work.

2018-02-19         Arnold D. Robbins     <arnold@skeeve.com>

        * gawkapi.h, io.c, msg.c: Update copyright year.

2018-02-10         Arnold D. Robbins     <arnold@skeeve.com>

        *  main.c,  msg.c: Add a call to fflush(NULL) before each
call         to abort(), since  GLIBC  2.27  doesn't  necessarily
flush  before          aborting.  Thanks to Nelson H.F. Beebe for
the report.

2018-02-09         Arnold D. Robbins     <arnold@skeeve.com>

        * io.c (socketopen): Rearrange assigning the flags to use
        AI_ADDRCONFIG  only  if  family  is  AF_UNSPEC. Thanks to
        Houder <houder@xs4all.nl>  for  the  report  and  initial
        code suggestion.

2018-02-07          Andrew  J. Schorr      <aschorr@telemetry-in-
vestments.com>

        Print +"01" should print "1", not "01".          * inter-
pret.h  (Op_unary_plus): Need to make a new number node that does
        not contain the original string representation. The logic
is copied         from Op_unary_minus.          * mpfr.c (mpg_in-
terpret): Add new case for  Op_unary_plus  based  on          the
Op_unary_minus  logic.  We need a fresh number node that does not
        contain the string.

2018-01-28         Arnold D. Robbins     <arnold@skeeve.com>

        * config.guess, config.sub: Updated.

2018-01-25         Arnold D. Robbins     <arnold@skeeve.com>

        * main.c (main): Add explanatory comment  about  O_APPEND
stuff.          * NEWS: Updated.

2018-01-22         Arnold D. Robbins     <arnold@skeeve.com>

        Fix the inplace tests on *BSD systems.

        * main.c (main): Add O_APPEND flag to fileno(stderr).

2018-01-17         Arnold D. Robbins     <arnold@skeeve.com>

        *  builtin.c  (do_isarray):  Check  that  tmp is Node_var
        before  calling   DEREF.   Thanks   to   Denis   Shirokov
        <cosmogen@gmail.com> for the report.

2018-01-15         Arnold D. Robbins     <arnold@skeeve.com>

        *  NEWS:  Small typo fix.          * config.sub: Updated.
        * io.c (fork_and_open_slave_pty): Rationalize down to one
        function  with  two  bodies.           (set_slave_pty_at-
tributes, push_pty_line_disciplines):  Move          into  #ifdef
for TERMIOS_H. Helps out with VMS compiling.

2018-01-12         Arnold D. Robbins     <arnold@skeeve.com>

        *  gawkapi.h:  Remove  extraneous  '*'  on  parameters of
        type awk_ext_id. Thanks to Andrew Schorr for the report.

2018-01-11         Arnold D. Robbins     <arnold@skeeve.com>

        *  compile,   config.guess,   config.rpath,   config.sub,
        depcomp: Updated from GNULIB.

2018-01-08         John E. Malmberg      <wb8tyw@qsl.net>

        *  io.c  (set_slave_pty_attributes): Currently no termios
on VMS.          (set_slave_pty_attributes): No fork on VMS.

2018-01-04         Arnold D. Robbins     <arnold@skeeve.com>

        Refactor handling of slave pty. On  AIX  and  HP-UX  open
        slave  in  the  child. Otherwise open slave in the parent
        before forking (restoring code mostly from 4.1.3). Thanks
        to Andrew Schorr for the bug report.

        *  io.c  (fork_and_open_slave_pty): New routine. Two ver-
sions.          (set_slave_pty_attributes): New  routine.  Common
code  used  by          both versions of fork_and_open_slave_pty.
        (push_pty_line_disciplines):  New  routine.  Common  code
used   by           both   versions  of  fork_and_open_slave_pty.
        (two_way_open): Call fork_and_open_slave_pty  instead  of
        doing it inline.

2018-01-03         Arnold D. Robbins     <arnold@skeeve.com>

        *  main.c  (UPDATE_YEAR):  Move to 2018. Revise copyright
year.          * NEWS: Bring up to date.

2018-01-02         Arnold D. Robbins     <arnold@skeeve.com>

        If ROUNDMODE changes,  cause  cached  string  conversions
        to  become  invalid.  Thanks to Nethox <nethox@gmail.com>
        for the report. Day 1 bug from 4.1.0 release.

        In all the below files, bump copyright year, too.

        * array.c (value_info): Include strndmode in the  output.
        *     awk.h     (NODE):     New     member,    strndmode.
        (MPFR_round_mode):      Add      extern      declaration.
        (force_string_fmt):     Check     s->strnmode     against
MPFR_round_mode.           *  awkgram.y  (set_profile_text):  Set
n->strndmode to MPFR_round_mode.          * builtin.c (do_print):
Remove tests and just call force_string_fmt.           *  field.c
(set_record):  Set  n->strndmode  to  MPFR_round_mode.          *
gawkapi.c   (api_sym_update_scalar):    Set    r->strndmode    to
        MPFR_round_mode.           *  interpret.h  (r_interpret):
For    Op_assign_concat,     set     t1->strndmode             to
MPFR_round_mode.           * mpfr.c (MPFR_round_mode): Define and
initialize.           (mpfr_format_val):  Set   s->strndmode   to
MPFR_round_mode.          (set_ROUNDMODE): Update MPFR_round_mode
when ROUNDMODE changes          successfully.           *  node.c
(r_format_val):     Set    s->strndmode    to    MPFR_round_mode.
        (make_str_node):  Set  r->strndmode  to  MPFR_round_mode.
        *   str_array.c   (str_kilobytes):   Update   a  comment.
        *  symbol.c  (check_param_names):  Set   n.strndmode   to
MPFR_round_mode.

2017-12-24         Arnold D. Robbins     <arnold@skeeve.com>

        Avoid some compiler warnings. Thanks to Michal Jaegermann
        <michal.jnn@gmail.com> for the report.

        *    builtin.c    (do_strftime):     Initialize     save.
        (do_dcgetttext):     Initialize     save    and    save2.
        (do_dcngettext):   Ditto.            (do_bindtextdomain):
Initialize save and save1.

        Unrelated:

        *  main.c (optlist): Make 'L' option's argument optional,
to          match  --lint.  Thanks  to  Manuel  Collado  <mcolla-
do2011@gmail.com>         for the report.

2017-12-22         Arnold D. Robbins     <arnold@skeeve.com>

        *  config.guess, config.sub, depcomp, install-sh: Updated
        from GNULIB.

2017-12-20         Arnold D. Robbins     <arnold@skeeve.com>

        * configure.ac: Add --enable-versioned-dir option  for  a
        directory with API version in it to hold extensions.

2017-12-19         Arnold D. Robbins     <arnold@skeeve.com>

        *  configure.ac:  Remove  x's  from `test "x$something" =
"xyes"         kinds of things. With correct quoting, the x isn't
needed.           (DYNAMIC): Remove use of -Wl,-export-dynamic on
Linux         and FreeBSD. It was  needed  for  old-style  exten-
sions, which are         no longer supported.

2017-12-10         Arnold D. Robbins     <arnold@skeeve.com>

        *  awkgram.y:  For '!' optimization on a string constant,
don't         apply  the  optimization  if  it's  a  translatable
string.  Thanks         to Jeremy Feusi <jeremy@feusi.co> for the
report.

2017-11-25         Andrew J.  Schorr       <aschorr@telemetry-in-
vestments.com>

        *     debug.c    (do_set_var):    As    in    interpret.h
(Op_store_field), we should         call the assign function  be-
fore  unref  to give it a chance to copy         any non-malloced
$n string values before freeing $0.

2017-11-14         Andrew J.  Schorr       <aschorr@telemetry-in-
vestments.com>

        * mpfr.c (get_rnd_mode): Fix MPFR_RNDA comment.

2017-11-14          Andrew  J. Schorr      <aschorr@telemetry-in-
vestments.com>

        Fix corruption when $0 is reassigned  while  other  NODEs
have  open          references  to $n. Thanks to Eric Pruitt <er-
ic.pruitt@gmail.com> for         the bug report.

        * field.c (purge_record): For each $n field variable,  if
valref  >  1         and it has not already been malloced, make a
copy of the string,  since          $0  is  about  to  be  reset.
        *  interpret.h  (Op_store_field): We must call the assign
function         before unref, since we must  copy  any  non-mal-
loced $n string values         before freeing $0.

2017-11-09         Arnold D. Robbins     <arnold@skeeve.com>

        *  main.c  (usage):  Add  a  note  to  not  post  bugs in
comp.lang.awk.          So there.

2017-11-08         Arnold D. Robbins     <arnold@skeeve.com>

        * gawkapi.h (AWK_NUMBER_TYPE): Move this enum out to  the
        top level so that it works correctly with C++.

2017-10-24         Arnold D. Robbins     <arnold@skeeve.com>

        * NEWS: Updated with info about OS/2.

2017-10-21         Arnold D. Robbins     <arnold@skeeve.com>

        *  awkgram.y:  For  string concatenation, don't fold con-
stants         if one or the other  is  translatable.  Thanks  to
Harald van Dijk         <harald@gigawatt.nl> for the report.

2017-10-21  KO Myung-Hun <komh78@gmail.com>

        *   nonposix.h   [__KLIBC__]:  Include  dlfcn.h,  declare
os2_dlsym,  and          redirect  dlsym  to  os2_dlsym.  Declare
os2_fixdllname.   Declare          os2_dlopen and redirect dlopen
to os2_dlopen.          * io.h (find_source) [__EMX__]:  Truncate
extension file basename         to 8 characters.

2017-10-19         Arnold D. Robbins     <arnold@skeeve.com>

        * 4.2.0: Release tar ball made.

2017-10-17          Andrew  J. Schorr      <aschorr@telemetry-in-
vestments.com>

        * NEWS: Actually, isarray is not deprecated in  this  re-
lease.           *  builtin.c  (do_isarray):  Remove lint warning
deprecating isarray.

2017-10-14         Arnold D. Robbins     <arnold@skeeve.com>

        *  field.c  (do_split):  Simplify  the   lint   warnings.
        Based   on   suggested   code   by   Eric   Pruitt   <er-
ic.pruitt@gmail.com>.

        Unrelated:

        * awkgram.y (check_funcs): Remove  the  REALLYMEAN  ifdef
and          simplify the lint checking code for function defined
but not         called or called but not defined.

2017-10-13         Arnold D. Robbins     <arnold@skeeve.com>

        Assume a more C99 environment:

        * awk.h: Assume we have limits.h, stdarg.h and stdbool.h.
        * configure.ac: Remove checks for limits.h and stdarg.h.

2017-10-10         Arnold D. Robbins     <arnold@skeeve.com>

        * configure.ac: Remove --with-whiny-user-strftime option.
        * NEWS: Updated.          * ChangeLog.0: Fix a typo. :-)

2017-10-08         Arnold D. Robbins     <arnold@skeeve.com>

        * command.y: Fix the FSF's address.

2017-10-08         Arnold D. Robbins     <arnold@skeeve.com>

        * NEWS: Rationalized with respect to stuff  on  the  API.
        Also  rationalized  with  respect  to  the pretty printer
changes.

2017-10-04         Andrew J.  Schorr       <aschorr@telemetry-in-
vestments.com>

        * README: Fix grammar by removing a stray word.

2017-10-04         Arnold D. Robbins     <arnold@skeeve.com>

        * NEWS: Add a note about OS/2 not working.

2017-10-02         Arnold D. Robbins     <arnold@skeeve.com>

        Undo change of 2014-09-07:

        *  configure.ac: Remove the undocumented option to enable
locale          letters  in  identifiers.           *   awkgram.y
(is_alpha): Remove related code.

2017-10-02         Arnold D. Robbins     <arnold@skeeve.com>

        * config.guess, config.sub: Updated.

2017-09-28         Arnold D. Robbins     <arnold@skeeve.com>

        *  io.c (devopen): Move declaration of `cp' to where it's
first used.

2017-09-18         Arnold D. Robbins     <arnold@skeeve.com>

        *  README:  Update  required  version   of   texinfo.tex.
        * compile, config.guess, config.sub, depcomp: Updated.

2017-09-17         Arnold D. Robbins     <arnold@skeeve.com>

        * gawkapi.h: Small changes to make it usable with C++.

2017-09-13         Arnold D. Robbins     <arnold@skeeve.com>

        *  Makefile.am  (command.c): Don't need the dependency on
awkgram.c          anymore.           *  bisonfix.awk:   Removed.
        * README: Revised to describe use of Bison exclusively.

2017-09-13          Andrew  J. Schorr      <aschorr@telemetry-in-
vestments.com>

        * Makefile.am (awkgram.c): Use -o option  to  bison.  Get
rid   of           messing   with  y.tab.h,  that  was  obsolete.
        (EXTRA_DIST): Don't need bisonfix.awk anymore.

2017-09-12          Petr   Ovtchenkov         <ptr@void-ptr.info>
                    Andrew  J. Schorr      <aschorr@telemetry-in-
vestments.com>

        * Makefile.am (command.c): Make dependant on awkgram.c so
        that  bison  is run serially with make -j.  Use -o option
so         that we no longer need bisonfix.awk in this rule.

2017-08-28         Arnold D. Robbins     <arnold@skeeve.com>

        * interpret.h (r_interpret):  Add  some  casts  to  avoid
warning         messages in printf statements.

        Unrelated:

        *  configure.ac:  Add  check for gai_strerror.          *
io.c (socketopen):  Use  gai_strerror  to  add  more  information
        if getaddrinfo fails.

2017-08-25         Pat Rankin            <r.pat.rankin@gmail.com>

        *  builtin.c  (TYPE_MINIMUM):  Use type uintmax_t for the
calculation,         deferring the cast to the target type  until
the final result.

2017-08-27         Juan Manuel Guerrero  <juan.guerrero@gmx.de>

        *  mbsupport.h  [__DJGPP_]:  Provide  multi-byte specific
declarations         and definitions for DJGPP.

2017-08-23         Arnold D. Robbins     <arnold@skeeve.com>

        * README.git: Minor edits to make build steps clearer.

2017-08-21         Daniel Richard G.     <skunk@iSKUNK.ORG>

        * awk.h (c_func): Renamed to  c_function  to  avoid  con-
flict.          with z/OS headers.          * ext.c, interpret.h:
Ditto.           *  configure:  Regenerated   after   update   to
m4/arch.m4.

2017-08-18         Arnold D. Robbins     <arnold@skeeve.com>

        *  debug.c  (do_set_var):  Fix  typos  in error messages.
        Thanks   to    Jean-Philippe    Guerard            <jean-
philippe.guerard@xn--tigreray-i1a.org> for the report.

2017-08-17         Arnold D. Robbins     <arnold@skeeve.com>

        * field.c (rebuild_record): Set new fields valref to 1 if
        original field's valref was  >  1.  Update  the  comment.
Found         by running chem.          * mpfr.c (do_mpfr_compl):
Fix typo in warning  message.           Thanks  to  Jean-Philippe
Guerard          <jean-philippe.guerard@xn--tigreray-i1a.org> for
the report.          * NEWS: Mention the Italian  translation  of
the manual.

2017-08-16         Arnold D. Robbins     <arnold@skeeve.com>

        *  gawkapi.c  (assign_number):  Clean  up the code a bit.
        (api_get_mpfr, api_get_mpz): Add return NULL in  non-MPFR
case         to avoid compiler warnings.

2017-08-16         Arnold D. Robbins     <arnold@skeeve.com>

        *  config.guess:  Update  from  GNULIB.           * NEWS,
README: Updated in preparation for release.

2017-08-16         Andrew  J.  Schorr      <aschorr@telemetry-in-
vestments.com>

        *  gawkapi.c (assign_number): Add 'ifdef HAVE_MPFR' tests
to get this         to build in the absence of MPFR.

2017-08-13         Arnold D. Robbins     <arnold@skeeve.com>

        * gawkapi.h (gawk_api_major_version): Reset  to  2  after
merging          in  feature/api-mpfr  branch.           *  NEWS:
`intdiv' is not built-in; remove the  entry  for  up  and  update
        numbering.  Add  note  about  API supporting GMP and MPFR
values.

2017-08-09         Arnold D. Robbins     <arnold@skeeve.com>

        *  gawkapi.h  (check_mpfr_versions):  Define  differently
based  on  if         MPFR version macro is defined. Enhance body
to use do/while(0).          (dl_load): Call  check_mpfr_versions
unconditionally.

2017-08-09         Arnold D. Robbins     <arnold@skeeve.com>

        *  main.c  (usage): Add URL for Bug reporting info to the
help message.

        Unrelated:

        * str_array.c (str_lookup): Make a copy of the string  if
it          came  from  Nnull_string  or a null field.  Thanks to
        Daniel Pettet for the report.

2017-08-04         Arnold D. Robbins     <arnold@skeeve.com>

        * array.c,  awk.h,  awkgram.y,  builtin.c,  cint_array.c,
        cmd.h,  debug.c, eval.c, ext.c, field.c, gawkapi.c, gawk-
misc.c,         gettext.h, int_array.c,  main.c,  mpfr.c,  msg.c,
node.c,  profile.c,          re.c,  str_array.c, symbol.c: Update
copyright years.

2017-08-04         Arnold D. Robbins     <arnold@skeeve.com>

        * config.guess, mkinstalldirs: Updated from GNULIB.

2017-08-01         Juan Manuel Guerrero  <juan.guerrero@gmx.de>

        Bring DJGPP support up to speed.

        * awk.h: Add DJGPP  in  #if  for  include  of  nonposix.h
        * nonposix.h (btowc, putwc): Add declarations for DJGPP.

2017-07-26         Arnold D. Robbins     <arnold@skeeve.com>

        *  awk.h  (validate_qualified_name):  Return type back to
bool.          * awkgram.y (validate_qualified_name): Return type
back  to  bool.           (lookup_builtin):  Make  allowances for
`awk::' prefix on name.          * interpret.h (r_interpret): For
indirect  call,  always pass true         for do_qualify argument
of lookup.          * main.c (main): Make note of  errors  in  -v
values,  use  this          to  exit failure if any happen.  Only
change  current_namespace          to  'awk::'  if  doing  pretty
printing.           (arg_assign):  If validate_qualified name re-
turns false, error out.

2017-07-26         Arnold D. Robbins     <arnold@skeeve.com>

        * awkgram.y (set_namespace): Change return type void, ad-
just          all return statements.          [@namespace]: Don't
YYABORT on bad namespace so that we can check         the rest of
the program.          (validate_qualified_name): Check tradition-
al / posix first. Return         after printing an error message;
we  don't  want  to  print multiple         messages for the same
identifer.          *  interpret.h  (r_interpret):  For  indirect
call,  set  do_qualify         parameter of lookup based on pres-
ence of a colon.

2017-07-20         Arnold D. Robbins     <arnold@skeeve.com>

        Make qualified names work with -v  and  command-line  as-
signments.

        *  awk.h (validate_qualified_name, check_qualified_name):
Declare.           *  awkgram.y   (validate_qualified_name):   No
longer static.          (check_qualified_name): Ditto.          *
main.c (arg_assign):  Allow  colons  in  identifiers.  If  not  a
        bad  identifier, call validate_qualified_name and instead
of         check_special use check_qualified_name.

2017-07-17         Arnold D. Robbins     <arnold@skeeve.com>

        Allow identifiers that are gawk extensions to be used  as
plain          identifiers  outside the "awk" namespace. Make the
real         builtins available via awk::builtin_name(). Standard
awk reserved         words and builtin functions remain reserved.

        *  awk.h  (getfname):  Add  boolean  parameter to prepend
namespace          or  not.           *  awkgram.y  (check_quali-
fied_name):  New function. Enforces that         standard awk re-
served words and functions  aren't  allowed,  and          allows
awk::gawk_extension   from   non-"awk"  namespace.           [di-
rect_func_call]:  Always  convert  name   to   fully   qualified.
        (getfname):  Add  boolean  parameter to prepend namespace
        or not. Adjust code.          (yylex): Separate out vali-
dation  code  from  code  building  the          NAME token.  Use
check_qualified_name to decide if token  is          special  in-
stead  of check_special.          (validate_qualified_name): Just
checks the form of the fully         qualified  name.           *
debug.c  (print_instruction): Update call to getfname.          *
profile.c (pprint): Update call to getfname.

2017-07-17         Arnold D. Robbins     <arnold@skeeve.com>

        * awkgram.y [direct_func_call]: Save full  variable  name
for         indirect calls too.

2017-07-17         Arnold D. Robbins     <arnold@skeeve.com>

        *  awkgram.y  [non_post_simp_exp]:  Merge LEX_BUILTIN and
        LEX_LENGTH  expansions.           (lookup_builtin):  Move
MPFR test to after test for sub builtin.

        *  awkgram.y [non_post_simp_exp]: Unmerge LEX_BUILTIN and
        LEX_LENGTH expansions. This  introduced  a  reduce/reduce
        conflict,  and  those are bad.  I don't know why I didn't
        notice this earlier. Sigh.

2017-07-15         Arnold D. Robbins     <arnold@skeeve.com>

        Revert change of 2016-07-24  that  always  runs  the  dfa
        matcher.  Based  on  a  bug  report  from Alexandre Oliva
        <lxoliva@fsfla.org>, DFA can cause  gawk  to  hang,  even
        in the C locale.

        * re.c (research): Don't use dfa if need_start is true.

2017-07-13         Arnold D. Robbins     <arnold@skeeve.com>

        More rationalization of the namespace code.

        *  awk.h  (is_valid_identifier): Declare.          * awk-
gram.y (grammar: direct_func_call):  Store  the  fully  qualified
        name  in the op code.          (yylex): Disallow reserved
words and functions as namespace  name.           (check_params):
Small  code  edit         (validate_qualified_name): Use is_lset-
ter.          (set_namespace): Check for NULL pointer first!  Use
is_valid_identifier         instead of inline code.  Disallow us-
ing reserved words as namespace         names.           *  ext.c
(is_valid_identifier): No longer static.          (make_builtin):
Check name and namespace against reserved words and         fatal
error if found.          * gawkapi.c (ns_lookup): New function to
look       for       variables               in       namespaces.
        (api_sym_lookup):  Check  namespace  for validity and use
ns_lookup.          (api_sym_update): Ditto.          * profile.c
(pp_print): Correctly print full function name         in a func-
tion call.

2017-07-11         Arnold D. Robbins     <arnold@skeeve.com>

        Continue adding namespace support to the extension API.

        * awk.h (make_builtin): Add leading name_space parameter.
        * ext.c (make_builtin): Add leading name_space parameter.
        Do the appropriate checking and building of a name before
        installing  in  the  symbol  table.           * gawkapi.c
(add_ext_func): Use  name_space,  not  namespace.           Check
that   the   parameter   isn't   NULL.           (api_sym_lookup,
api_sym_update):  Use  name_space,  not   namespace.            *
gawkapi.h: Use name_space, not namespace, everywhere.

2017-07-11         Arnold D. Robbins     <arnold@skeeve.com>

        *  awk.h  (is_letter):  Add declaration.          * ext.c
(is_valid_identifier): New function.          (make_builtin): Use
is_valid_identifier instead of inline code.          (is_letter):
Moved from here ...           *  awkgram.y  (is_letter):  ...  to
here.            (yylex):   Use  is_letter  instead  of  a  test.
        * command.y (yylex): Ditto.           *  main.c  (arg_as-
sign): Ditto.

2017-07-07         Arnold D. Robbins     <arnold@skeeve.com>

        Remove warnings from GCC 7.1 compilation.

        * awk.h (fatal_tag_valid): Change type to int.          *
awkgram.y (yylex): Set did_newline to true instead of  using  ++.
        *  builtin.c (format_tree): Set lj to true instead of us-
ing ++.          * cmd.h (pager_quit_tag_valid): Change  type  to
int.           *  debug.c  (pager_quit_tag_valid): Change type to
int.          (do_clear): Make  bp_found  an  int,  change  uses.
        (do_run):  Treat  fatal_tag_valid  as  an int.          *
msg.c (fatal_tag_valid): Change type to int.

2017-07-07         Arnold D. Robbins     <arnold@skeeve.com>

        * awkgram.y (yyerror):  Produce  better  diagnostics  for
source         files that are not whole syntactic units.

        *  gawkapi.c  (api_sym_lookup, api_sym_update): Add name-
space parameter.          Currently unused.          *  gawkapi.h
(api_sym_lookup,   api_sym_update):   Add   namespace  parameter.
        (api_sym_lookup_ns,   api_sym_update_ns):   New   macros.
        (api_sym_lookup, api_sym_update): Adjust macro bodies.

2017-07-07         Arnold D. Robbins     <arnold@skeeve.com>

        *  gawapi.h: Bring descriptive comments up to date, minor
edits.          * io.c: Add some initial  comments  to  functions
where they were missing.

2017-07-03         Arnold D. Robbins     <arnold@skeeve.com>

        * gawkapi.h, gawkapi.c: Typo fixes in comments.

2017-07-01         Arnold D. Robbins     <arnold@skeeve.com>

        *  symbol.c  (install):  Don't  call  fix_up_namespace if
        installing parameters.          * profile.c (remove_name-
space):  Renamed  to         (adjust_namespace): Make smarter and
add boolean parameter for         if return was mallc'ed.  Adjust
calls.

2017-06-30         Arnold D. Robbins     <arnold@skeeve.com>

        Add namespace info into Op_Rule and Op_Func.          Fix
memory management problem.          The changes temporarily break
the test suite.

        *   awk.h   (MAX_INSTRUCTION_ALLOC):   Increase   to   4.
        (Op_K_namespace): Remove, not needed.           *  eval.c
(optypetab):    Remove   Op_K_namespace.            *   awkgram.y
(make_pp_namespace): New function.           (yylex):  For  BEGIN
etc, allocate 4 in the instruction.          (install_func): Save
namespace name for Op_rule.           (append_rule):  Save  name-
space  name  for Op_rule.          * debug.c (print_instruction):
Print namespace for Op_rule, Op_func.          Remove  Op_K_name-
space.          * profile.c (pp_namespace, remove_namespace): New
functions.           (pprint):  Call  `pp_namespace'.  Use   `re-
move_namespace'  on  variable          names.          (pp_func):
Ditto on both.          *  symbol.c  (lookup):  Initialize  `mal-
loced' to false.          (install): Ditto.

        Unbreak the test suite:

        *  awk.h  (namespace_changed):  Declare new boolean vari-
able.          * awkgram.y (namespace_changed): Define new  bool-
ean  variable.           (set_namespace): Set it to true when the
namespace is changed.          * main.c (main): Set current_name-
space  to "awk::" for the pretty         printer.          * pro-
file.c (pp_namespace): If namespace_changed is false, return.

2017-06-28         Arnold D. Robbins     <arnold@skeeve.com>

        * awk.h [ns_name]: Add  macro  in  preparation  for  use.
        *  debug.c  (print_instruction):  Add case for Op_K_name-
space.           Not  really  used   yet.            *   symbol.c
(fix_up_namespace): Bug fix to always allocate         memory for
a full name. Add boolean parameter to indicate         if  memory
was   malloc'ed   or   not.           (lookup):  Adjust  call  to
fix_up_namespace and use make_str_node         if the string  was
malloced.          (install): Ditto.

2017-06-26         Arnold D. Robbins     <arnold@skeeve.com>

        * configure.ac: Turn a tab into a space in AC_DEFINE(SUP-
PLY_INTDIV).

2017-06-25         Andrew  J.  Schorr      <aschorr@telemetry-in-
vestments.com>

        *  gawkmisc.c  (xmalloc):  Remove  function  now  in sup-
port/xalloc.h.

2017-06-22         Arnold D. Robbins     <arnold@skeeve.com>

        Make pretty-printing include parentheses  that  were  ex-
plicitly         in the source code. Thanks to Hermann Peifer for
the bug report.

        * awk.h (OPCODE):  Add  Op_parens.           *  awkgram.y
[Grammar]:   If   pretty-printing,   add   Op_parens  ot  end  of
        list for parenthesized expression.          * eval.c (op-
typetab):  Add  Op_parens.           * interpret.h (r_interpret):
Ditto.          *  profile.c  (pprint):  Ditto.   For  ?:,  don't
parenthesize  it.           (pp_parenthesize):  If  string starts
with left paren,  return  early.           (parenthesize):  Don't
call                                    div_on_left_mul_on_right.
        (div_on_left_mul_on_right):       Remove        function.
        (pp_concat): Don't add parentheses if expressions already
have them.          * NEWS: Updated.

2017-06-21         Andrew  J.  Schorr      <aschorr@telemetry-in-
vestments.com>

        Replace  malloc/memset  combinations with calloc by using
the new ezalloc          macro.           *  awkgram.y  (yyerror,
do_add_srcfile,  funcuse):  Replace  emalloc+memset          with
ezalloc.            *   cint_array.c   (cint_lookup,   cint_copy,
tree_lookup,  tree_copy,          leaf_lookup, leaf_copy): Ditto.
        *  command.y  (mk_cmdarg):  Ditto.            *   debug.c
(add_item):   Ditto.            *  eval.c  (setup_frame):  Ditto.
        *  field.c  (set_record):  Ditto.           *   gawkapi.c
(api_flatten_array_typed):    Ditto.             *    int_array.c
(int_copy, grow_int_table): Ditto.          * io.c (init_awkpath,
iop_alloc):   Ditto.            *   node.c   (str2wstr):   Ditto.
        *  re.c  (make_regexp):  Ditto.           *   str_array.c
(str_copy,  grow_table): Ditto.          * symbol.c (make_params,
new_context): Ditto.

2017-06-19         Andrew  J.  Schorr      <aschorr@telemetry-in-
vestments.com>

        *  awk.h (ezalloc): Add new macro to allocate memory ini-
tialized to zero.          (ezalloc_real): New inline function to
call calloc.          * gawkapi.h (ezalloc): Add new API macro to
allocate memory initialized         to zero.

2017-06-18         Arnold D. Robbins     <arnold@skeeve.com>

        * builtin.c (mbc_char_count): Fix code to correctly  tra-
verse          the  string.  Thanks to Hermann Peifer for the bug
report.          * config.guess,  config.sub:  Update  to  latest
from  GNULIB.           *  gettext.h:  Pull in a few nice changes
from GNULIB version.

2017-06-16         Arnold D. Robbins     <arnold@skeeve.com>

        * awk.h (lookup): Add second  parameter.           *  ar-
ray.c  (assoc_list):  Adjust call to lookup.          * awkgram.y
(grammar, parms_shadow, install_function, variable):         Dit-
to.           *  command.y  [Grammar]:  Ditto.          * debug.c
(find_symbol): Ditto.           *  ext.c  (make_builtin):  Ditto.
        *   gawkapi.c  (api_sym_lookup,  api_sym_update):  Ditto.
        * interpret.h  (r_interpret):  Ditto.           *  main.c
(arg_assign): Ditto.          (main): Reset current_namespace af-
ter parsing.          * symbol.c (lookup): New second  parameter,
do_qualify. Use it         to qualify names or not.          (in-
stall):  Call  fix_up_namespace.            (is_all_upper):   New
helper routine.          (fix_up_namespace): New function.

2017-06-13         Arnold D. Robbins     <arnold@skeeve.com>

        * awk.h (awk_namespace, current_namespace): Move to const
char.          (SRCFILE): Add namespace element.          *  awk-
gram.y  (awk_namespace,  current_namespace):  Move to const char.
        (set_namespace): New function.           [Grammer]:  Call
it.           (tokentab):  Add  "namespace"  entry.          (in-
clude_source): Push the current namespace.          (next_source-
file):  Pop  the  current  namespace.           (yylex): Add lint
warning if a reserved word is used as a  namespace          name.
        (validate_qualified_name):  Make it an error to use a re-
served         word as the second part of a fully qualified name.

2017-06-11         Arnold D. Robbins     <arnold@skeeve.com>

        *  awk.h  (awk_namespace,  current_namespace):   Declare.
        (opcodeval):  Add  Op_K_namespace.           *  awkgram.y
(awk_namespace, current_namespace):  Define.           (LEX_NAME-
SPACE):   Add  lexing  and  parsing  of  `@namespace  directive'.
        (tokentab):  Add  "namespace"  entry.            (yylex):
Check if first part of qualified identifier is         a reserved
word or function.          * eval.c (optypetab):  Add  Op_K_name-
space.

2017-06-06         Arnold D. Robbins     <arnold@skeeve.com>

        *  awkgram.y (yylex): Allow :: in identifiers (the "NAME"
token).           Use  validate_qualified_name   to   check   it.
        (validate_qualified_name): New function.

2017-05-30         Arnold D. Robbins     <arnold@skeeve.com>

        *  awkgram.y  (nextc):  Force  -e  chunks to be syntactic
units.          Needed for namespaces to work correctly.

2017-05-30         Arnold D. Robbins     <arnold@skeeve.com>

        * NEWS: Mention PROCINFO["argv"].

2017-05-24         Andrew  J.  Schorr      <aschorr@telemetry-in-
vestments.com>

        * field.c (set_FIELDWIDTHS): Add check to protect against
blank         characters after a `:' skip separator.          Fix
field   number   in   error  message,  thanks  to  a  bug  report
        from Michal Jaegermann.

2017-05-23         Andrew  J.  Schorr      <aschorr@telemetry-in-
vestments.com>

        *  field.c (set_FIELDWIDTHS): Simplify the logic and con-
sistentify         use of UINT_MAX.  Make sure that negative val-
ue after : is caught.

2017-05-23         Arnold D. Robbins     <arnold@skeeve.com>

        *  field.c (fw_parse_field): Stop upon hitting the end of
the         record; this enables correct counting of  the  number
of  fields.          (set_FIELDWIDTHS): Add `*' at end as meaning
``all the rest         of the data on the line.'' Allow skip:* as
well.          * NEWS: Update information about FIELDWIDTHS.

2017-05-20         Arnold D. Robbins     <arnold@skeeve.com>

        *  awkgram.y (add_lint): Make ``no effect'' check smarter
about         reporting line numbers.

2017-05-01         Arnold D. Robbins     <arnold@skeeve.com>

        * awkgram.y (nextc): Fix to  change  of  2017-04-24  such
that          @include works in multibyte locales. Thanks to Her-
mann         Peifer for the bug report.

2017-04-26         Andrew  J.  Schorr      <aschorr@telemetry-in-
vestments.com>

        *  awkgram.y (make_regnode): Fix bug -- we should not set
valref to 1         when creating  a  node  of  type  Node_regex,
since valref is appropriate         only for Node_val nodes. This
fixes a bug introduced in commit         687e6594. Also,  add  an
assert  to make it clear that this function         supports only
Node_regex and Node_dynregex.          *  awk.h  (NODE):  Restore
sref  to  the  `val'  subportion,  since it is not         really
needed for Node_regex, now  that  the  bug  in  make_regnode  has
        been fixed.          (valref): Restore macro definition.

2017-04-24         Arnold D. Robbins     <arnold@skeeve.com>

        *  awk.h  (NODE):  Additional  cleanups. Removed `aq' and
`param_list'         elements from  various  unions  and  removed
'nextp'  and          `a_opaque'  defines.  None of these were in
use.          Rework the comment for valref, per suggestion  from
        Andrew Schorr.

2017-04-23         Arnold D. Robbins     <arnold@skeeve.com>

        * awkgram.y (nextc): Adjust so that 3.1.x behavior is re-
stored          whereby  --source  arguments  are   concatenated.
Thanks  to          "Neil  R. Ormos" <ormos-gnulists17@ormos.org>
for the report.

2017-04-21         Arnold D. Robbins     <arnold@skeeve.com>

        * awk.h (NODE): Put the `val' subportion back the way  it
        was  and  move  valref  (formerly sref) out of the unions
        entirely. This was the real problem.  Rework  the  corre-
sponding         commentary.          [valref]: Removed the macro
definition.

2017-04-20         Arnold D. Robbins     <arnold@skeeve.com>

        * configure.ac: Make letter case  usage  in  the  various
        AC_ARG_ENABLE  messages  consistent with the rest of con-
figure         output.          (--disable-mpfr): Add this option
to  make  it easier         to check compiles without MPFR. Moti-
vated by:         * awk.h (NODE): Rearrange  the  layout  of  the
'val'  subportion          of the union to fix alignment problems
when compiling without         MPFR.  The problem  only  happened
on 64-bit compiles, not         32-bit compiles.

2017-04-16         Arnold D. Robbins     <arnold@skeeve.com>

        Rename  intdiv it intdiv0 and require enabling at config-
ure time.

        * awkgram.y (tokentab): Bracket intdiv0  in  #ifdef  SUP-
PLY_INTDIV.            (snode):   Similar.           *  builtin.c
(do_intdiv): Bracket in #ifdef SUPPLY_INTDIV.           *  mpfr.c
(do_mpfr_intdiv):  Bracket  in  #ifdef  SUPPLY_INTDIV.          *
configure.ac: Add --enable-builtin-intdiv0  option.  If  enabled,
        also revise doc/gawktexi.in.

2017-04-16         Arnold D. Robbins     <arnold@skeeve.com>

        *  builtin.c  (do_intdiv):  Use  DEREF  on the arguments.
        Thanks  to  Andrew  Schorr  for  finding   the   problem.
        *  mpfr.c (do_mpfr_intdiv): Return -1 if numerator or de-
nominator         are not  valid  numbers.   Unref  various  bits
first.

2017-04-13         Arnold D. Robbins     <arnold@skeeve.com>

        *  awk.h  (make_number_node): Simplify.          * mpfr.c
(mpg_node): Change parameter name to `flags'.

2017-04-12         Arnold D. Robbins     <arnold@skeeve.com>

        * mpfr.c (mpg_format_val): Set  STRCUR  flag  when  we're
done.           Fixes  a  memory leak. Thanks to valgrind for the
report.

        * builtin.c (do_dcgettext): Move declaration of reslen to
        outside  the ifdefs. Thanks to Hermann Peifer for the re-
port.

        * gawkapi.c (awk_value_to_node):  Initialize  ext_ret_val
to NULL         to avoid compiler warnings.

2017-04-12         Manuel Collado        <m-collado@users.source-
forge.net>

        Fix the FPAT bug reported by Ed Morton  in  the  gawk-bug
mailing list.

        *  awk.h  (Regexp): Remove the non_empty flag.          *
field.c (fpat_parse_field): Restructure the code to  reduce  com-
plexity         and document the new structure.

        *  field.c  (fpat_parse_field):  Further restructuring to
avoid         invalid reads as reported by valgrind.

2017-04-10         Andrew  J.  Schorr      <aschorr@telemetry-in-
vestments.com>

        *  awk.h  (enum  opcodeval):  For the avoidance of doubt,
specify that         Op_illegal must equal zero.          *  sym-
bol.c  (bcfree):  Improve clarity by setting opcode to Op_illegal
        instead of 0.          (free_bc_mempool): Improve clarity
by comparing opcode to Op_illegal         instead of to 0.

        *  field.c  (set_FIELDWIDTHS): Set use_chars to awk_true,
since its         type is awk_bool_t.

2017-04-10         Arnold D. Robbins     <arnold@skeeve.com>

        * symbol.c (free_bc_mempool): Change `first' from int  to
bool.

2017-04-09          Andrew  J.  Schorr     <aschorr@telemetry-in-
vestments.com>

        * field.c (fw_parse_field): Edit comment about  resetting
shift  state.           * gawkapi.h (awk_fieldwidth_info_t): Make
white space more uniform.

2017-04-08  Eli Zaretskii  <eliz@gnu.org>

        * main.c (usage, copyleft) [__MINGW32__]:         *  io.c
(non_fatal_flush_std_file,    close_io)    [__MINGW32__]:    Call
        w32_maybe_set_errno to correctly set errno to EPIPE  when
appropriate.

        *  awk.h  (die_via_sigpipe) [__MINGW32__]: MinGW-specific
definition.

2017-04-07         Andrew  J.  Schorr      <aschorr@telemetry-in-
vestments.com>

        *  awk.h  (INSTRUCTION_POOL):  Redefine  as  an  array of
structures so we         can track allocated  blocks.           *
symbol.c   (pools):   Make   it   a  pointer  to  avoid  copying.
        (struct instruction_block): Define structure  to  hold  a
block  of          allocated instructions.          (bcfree): Up-
date to use new INSTRUCTION_POOL definition.           (bcalloc):
Allocate   an   instruction   by  searching  first  on  the  free
        list, second for free space  in  the  current  block,  or
third  by         allocating a new block.          (set_context):
Update   to   reflect   that   pools   is    now    a    pointer.
        (free_bc_mempool):  New helper function to free a pool of
a certain size.          (fre_bcpool): Call  free_bc_mempool  for
each pool.

2017-04-04         Arnold D. Robbins     <arnold@skeeve.com>

        *    awk.h    (INSTRUCTION):    Add   pool_size   member.
        [MAX_INSTRUCTION_ALLOC]:  New  macro.           (INSTRUC-
TION_POOL):  New  type.           (struct  context): Use INSTRUC-
TION_POOL.          * array.c (assoc_list): Reorg the code a  bit
to  make  sure          to always free the INSTRUCTIONs allocated
for calling a         user-supplied sorting  function.  Based  on
code by         Andrew Schorr.          * symbol.c (free_bcpool):
Rework to use an  INSTRUCTION_POOL.           (bcfree,  bcalloc):
Rework  to  use  separate chains in         the instruction pool.
        (set_context): Update appropriately.

2017-03-27         Arnold D. Robbins     <arnold@skeeve.com>

        * field.c  (parse_field_func_t):  New  typedef.  Used  as
needed.           (fw_parse_field):  Edit comment about resetting
shift state.          (set_parser): Fix leading  comment's  style
and type of argument.          (set_FIELDWIDTHS): Improve the fa-
tal error message.          * gawkapi.h: Minor edits in some com-
ments.

2017-03-27         Arnold D. Robbins     <arnold@skeeve.com>

        Cause EPIPE errors to stdout to generate a real SIGPIPE.

        *   awk.h   (die_via_sigpipe):   New   macro.           *
builtin.c   (efwrite):   Use   it.            *   io.c   (non_fa-
tal_flush_std_file): Ditto.          * main.c (usage): Ditto.

2017-03-25         Arnold D. Robbins     <arnold@skeeve.com>

        * io.c (flush_io): Use r_fatal and r_warning for message-
func         in the loop.

2017-03-24         Arnold D. Robbins     <arnold@skeeve.com>

        * builtin.c (efwrite): Exit successfully upon  EPIPE,  as
SIGPIPE          done.  Improve  error  messages  upon failure to
write.          (do_fflush): Update  ERRNO  for  non-fatal  flush
failures.           * io.c (non_fatal_flush_std_file): Update ER-
RNO when flush is         non-fatal.           (flush_io):  If  a
redirect  is  marked  non-fatal,  only warning,         not fatal
message.

2017-03-23         Arnold D. Robbins     <arnold@skeeve.com>

        * config.sub: Updated again.

2017-03-22         Andrew  J.  Schorr      <aschorr@telemetry-in-
vestments.com>

        * NEWS: Document new PROCINFO["FS"] value of "API".

2017-03-22          Andrew  J.  Schorr     <aschorr@telemetry-in-
vestments.com>

        * NEWS: Document new FIELDWIDTHS skip capability and  API
input parser         field parsing enhancement.

2017-03-22          Andrew  J.  Schorr     <aschorr@telemetry-in-
vestments.com>

        * gawkapi.h (awk_input_buf_t): Update get_record  comment
regarding the         new field_width argument.

2017-03-21          Andrew  J.  Schorr     <aschorr@telemetry-in-
vestments.com>

        * gawkapi.h (awk_fieldwidth_info_t): Define new structure
to contain         API field parsing info, replacing the previous
awk_input_field_info_t            array.              (awk_field-
width_info_size):   Define   macro   to  calculate  size  of  the
        variable-length     awk_fieldwidth_info_t      structure.
        (awk_input_buf_t):  Update get_record prototype to update
the type         of the final field_width  argument  from  'const
awk_input_field_info_t  **'          to 'const awk_fieldwidth_in-
fo_t **'.          * awk.h (set_record): Change 3rd argument from
        'const  awk_input_field_info_t  *'  to  'const awk_field-
width_info_t  *'.           *  io.c   (inrec,   do_getline_redir,
do_getline):  Change field_width type         from 'const awk_in-
put_field_info_t *' to         'const  awk_fieldwidth_info_t  *'.
        (get_a_record):  Change  field_width  argument  type from
        'const awk_input_field_info_t **'  to  'const  awk_field-
width_info_t  **'.           * field.c (api_parser_override): De-
fine new boolean to track whether         API parsing is current-
ly overriding default parsing behavior.          (api_fw): Change
type from  'const  awk_input_field_info_t  *'          to  'const
awk_fieldwidth_info_t  *'.           (FIELDWIDTHS):  Change  type
from 'int *' to 'awk_fieldwidth_info_t *'.          (set_record):
Use  new boolean api_parser_override to track whether         API
parsing override is in effect, since we  can  no  longer  discern
        this from the value of parse_field -- FIELDWIDTHS parsing
uses the         same function.          (calc_mbslen): New func-
tion  to  calculate  the  length  of a multi-byte         string.
        (fw_parse_field):  Enhance  to  support  the   awk_field-
width_info_t          structure  instead of simply using an array
of integer field widths.          (api_parse_field): Remove func-
tion  no  longer needed since fw_parse_field         now supports
both FIELDWIDTHS  and  API  parsing.           (set_parser):  Use
api_parser_override  instead  of comparing parse_field         to
api_parse_field.          (set_FIELDWIDTHS): Enhance to  use  new
awk_fieldwidth_info_t structure         and parse new skip prefix
for  each  field.           (current_field_sep):  Use   api_pars-
er_override flag instead of comparing         to api_parse_field.
        (current_field_sep_str): Ditto.

2017-03-20         Arnold D. Robbins     <arnold@skeeve.com>

        Improve  handling  of   EPIPE.   Problems   reported   by
        Alexandre     Ferrieux    <alexandre.ferrieux@orange.com>
        and David Kerns <david.t.kerns@gmail.com>.

        *    awk.h    (ignore_sigpipe,    set_sigpipe_to_default,
        non_fatal_flush_std):      Declare     new     functions.
        (ignore_sigpipe, set_sigpipe_to_default,          non_fa-
tal_flush_std):  New  macros.           *  builtin.c (do_fflush):
When nonfatal not in force, flush          of  stdout/stderr  and
EPIPE  exits,  simulating SIGPIPE, as         in nawk/mawk. Flush
of  other  redirections  with  EPIPE  now          also   fatals.
        (do_system): Use ignore_sipipe and set_sigpipe_to_default
        instead of uglier inline ifdefed code.          *  main.c
(main):  Ditto.           *  io.c (redirect_string, two_way_open,
gawk_popen): Ditto.          (flush_io): Use  non_fatal_flush_std
for stdout and stderr.

        Unrelated:

        *  config.guess,  config.rpath,  config.sub,  install-sh:
        Sync with GNULIB.

2017-03-16         Arnold D. Robbins     <arnold@skeeve.com>

        * configure.ac: Some cleanups.

2017-03-09         Andrew  J.  Schorr      <aschorr@telemetry-in-
vestments.com>

        *  gawkapi.h  (awk_input_field_info_t): Define new struc-
ture to contain         API field parsing info.          (awk_in-
put_buf_t):  Update  get_record  prototype  to  use  an  array of
        awk_input_field_info_t instead  of  integers.           *
awk.h  (set_record):  Change  3rd  argument from 'const int *' to
        'const  awk_input_field_info_t  *'.           *   field.c
(api_fw):  Now  points  to  an  array  of  awk_input_field_info_t
        instead of integers.           (set_record):  Change  3rd
argument  to point to an array of         awk_input_field_info_t.
        (api_parse_field): Update parsing logic  to  use  awk_in-
put_field_info_t          structures instead of an array of inte-
gers.           *  io.c  (inrec,  do_getline_redir,  do_getline):
Change  field_width  type          from  'const  int *' to 'const
awk_input_field_info_t   *'.            (get_a_record):    Change
field_width  argument  type from 'const int **'         to 'const
awk_input_field_info_t **'.

2017-03-09         Arnold D. Robbins     <arnold@skeeve.com>

        * field.c: Minor style edits.

2017-03-06         Andrew  J.  Schorr      <aschorr@telemetry-in-
vestments.com>

        *     field.c    (normal_parse_field):    Renamed    from
save_parse_field to reflect         better its purpose.  Added  a
comment   to   explain  more  clearly  what's          going  on.
        (set_record, set_parser): Rename save_parse_field to nor-
mal_parse_field.

2017-03-06          Andrew  J.  Schorr     <aschorr@telemetry-in-
vestments.com>

        * gawkapi.h (awk_input_buf_t): Remove  field_width  array
and  instead          add  it as a 6th argument to the get_record
function. This should         not break existing code, since it's
fine  to ignore the additional         argument. Document the be-
havior of the field_width argument.          * io.c (inrec): Pass
pointer  to  field_width  array to get_a_record,         and then
hand it off to set_record.           (do_getline_redir):  If  not
reading  into a variable, pass pointer to         field_width ar-
ray  to  get_a_record  and  then  hand  it  off  to   set_record.
        (do_getline):  Ditto.           (get_a_record): Add a 4th
field_width  argument  to  pass  through   to           the   API
get_record method.

2017-03-05          Andrew  J.  Schorr     <aschorr@telemetry-in-
vestments.com>

        * awk.h (set_record): Add a  new  argument  containing  a
field-width            array   returned   by   an   API   parser.
        (field_sep_type):   Add   new   enum   value   Using_API.
        (current_field_sep_str): Declare new function.          *
field.c (save_parse_field):  New  static  variable  to  save  the
        parse_field  value  in cases where it's overridden by API
parsing.          (api_fw): New static variable to  hold  pointer
to  API  parser  fieldwidth         array.          (set_record):
Add new field-width array argument. If present, API         pars-
ing    will    override    the    default    parsing   mechanism.
        (api_parse_field): New field parser  using  field  widths
supplied by the         API. This is very similar to the existing
fw_parse_field function.          (get_field): Fix typo  in  com-
ment.           (set_parser):  New function to set default parser
and check whether         there's an API parser override  in  ef-
fect.  Update  PROCINFO["FS"]  if          something has changed.
        (set_FIELDWIDTHS):  Use  set_parser  and  stop   updating
PROCINFO["FS"].           (set_FS):  Ditto.           (set_FPAT):
Ditto.          (current_field_sep): Return Using_API when  using
the    API    field    parsing           widths.            (cur-
rent_field_sep_str): New function to  return  the  proper  string
        value  for  PROCINFO["FS"].          * gawkapi.h (awk_in-
put_buf_t): Add field_width array to  enable  the          parser
get_record  function  to  supply  field  widths  to  override the
        default gawk field  parsing  mechanism.           *  io.c
(inrec):   Pass  iop->public.field_width  to  set_record  as  the
        3rd argument  to  enable  API  field  parsing  overrides.
        (do_getline_redir,  do_getline): Ditto.          * main.c
(load_procinfo):   Use   new    current_field_sep_str    function
        instead  of  switching  on  the  return  value  from cur-
rent_field_sep.

2017-02-23         Arnold D. Robbins     <arnold@skeeve.com>

        * awk.h (boolval): Return bool instead of int.          *
eval.c  (eval_condition):  Same.           *  io.c (pty_vs_pipe):
Same         Thanks to Andrew Schorr for pointing these out.

2017-02-21         Andrew  J.  Schorr      <aschorr@telemetry-in-
vestments.com>

        *  NEWS:  Document that mktime now takes an optional utc-
flag argument.          * awkgram.y (tokentab): Modify mktime en-
try  to  indicate  that  it  may          accept  two  arguments.
        * builtin.c (mktime_tz): New function to run mktime in an
arbitrary          time  zone.  Code  was  copied  from the Linux
timegm man page.          (do_mktime): Add support  for  new  op-
tional  2nd  argument utc-flag by         using the new mktime_tz
function.          (do_strftime): Change do_gmt type from int  to
bool.

2017-02-17         Arnold D. Robbins     <arnold@skeeve.com>

        *  builtin.c  (do_typeof):  Handle  arguments  that  have
        the NULL_FIELD flag set.

2017-02-03         Andrew  J.  Schorr      <aschorr@telemetry-in-
vestments.com>

        *  awkgram.y  (set_profile_text): Improve code clarity by
using emalloc         to allocate the string instead  of  abusing
estrdup.

2017-02-02         Arnold D. Robbins     <arnold@skeeve.com>

        * awkgram.y (set_profile_next): Allocate an extra byte at
the         end for the NUL in case we add a sign. Thanks to  An-
drew Schorr         for making me look at this code.

        And later in the same day:

        *  awkgram.y  (set_profile_next):  Undo  previous change,
since estrdup         handles it, but updated the comments.

2017-02-01         Arnold D. Robbins     <arnold@skeeve.com>

        * builtin.c (mbc_char_count): Remove spurious  multiplies
by         gawk_mb_cur_max. Thanks to Andrew Schorr for making me
look         at this code.

        Unrelated:

        *  awkgram.y  (make_profile_number):   Renamed   to   ...
        (set_profile_next): New function. All calls adjusted. Al-
so improved         use at MPFR number case.

2017-01-28         Andrew  J.  Schorr      <aschorr@telemetry-in-
vestments.com>

        *  io.c  (inetfile): Replace strncmp with memcmp in a few
places, now         that we are checking  string  length  before-
hand.

2017-01-27          Andrew  J.  Schorr     <aschorr@telemetry-in-
vestments.com>

        * io.c (redirect_string): Check  explen  positive  before
accessing  *str.           In lintwarn message, use explen string
length. Pass length to inetfile.           (devopen):  Pass  name
length  to  inetfile.           Stop  assuming that remoteport is
NUL-terminated.          (two_way_open): Pass name length to  in-
etfile.           (inetfile):  Stop  assuming NUL string termina-
tion; add checks to avoid         string overrun.

2017-01-27         Andrew  J.  Schorr      <aschorr@telemetry-in-
vestments.com>

        * awk.h (str_terminate_f): New helper function for termi-
nating a  string          NODE.           (str_terminate):  Macro
wrapper  to  call  str_terminate_f.           (str_restore):  New
macro to restore the string.          * builtin.c  (do_strftime):
Use  str_terminate and str_restore.          (do_dcgettext): Dit-
to, and remove saved_end flag since equivalent         to testing
(t2   !=   NULL).   Fix   overrun   bug   in  calculating  result
        length   when    !ENABLE_NLS.             (do_dcngettext,
do_bindtextdomain): Use str_terminate and str_restore.          *
interpret.h  (Op_arrayfor_init,  Op_indirect_func_call):   Ditto.
        * str_array.c (env_remove): Ditto.

2017-01-27          Andrew  J.  Schorr     <aschorr@telemetry-in-
vestments.com>

        * interpret.h [UNFIELD]:  Fix  condition  for  assignment
from         value with valref == 1. Fixes problems introduced at
gawk 4.1.2.

2017-01-27         Arnold D. Robbins     <arnold@skeeve.com>

        * interpret.h: Update copyright year.          *  debug.c
(do_run):    Rework    error   message   to   ease   translation.
        Thanks to Rafael Fontenelle <rafaelff@gnome.org>  and  to
        Eli Zaretskii <eliz@gnu.org>.

2017-01-26          Andrew  J.  Schorr     <aschorr@telemetry-in-
vestments.com>

        * builtin.c (do_dcgettext):  First  argument  also  needs
protection         from string overrun.          (do_dcngettext):
Need to terminate string1 and string2 also,          and  replace
strlen(the_result), which could overrun.          (do_bindtextdo-
main):   Terminate    both    string    args,    and    eliminate
        saved_end boolean which is redundant with (t2 != NULL).

2017-01-26          Andrew  J.  Schorr     <aschorr@telemetry-in-
vestments.com>

        * interpret.h (Op_arrayfor_init): Protect against  string
overrun            on    sorting    method.             (Op_indi-
rect_func_call): Terminate function name.

2017-01-26         Andrew  J.  Schorr      <aschorr@telemetry-in-
vestments.com>

        * str_array.c (env_remove): Terminate string before call-
ing unsetenv.

2017-01-26         Andrew  J.  Schorr      <aschorr@telemetry-in-
vestments.com>

        * node.c (is_hex): Add a new argument pointing to the end
of the  string          so  we  can  check  for  string  overrun.
        (r_force_number): Pass string end to is_hex.

2017-01-26          Andrew  J.  Schorr     <aschorr@telemetry-in-
vestments.com>

        * awk.h (get_numbase): Add string length argument  so  we
can  operate          on  unterminated  strings.           * awk-
gram.y: Call get_numbase with string length, and  fix  off-by-one
        error  in  length  passed  to  nondec2awknum:  should  be
strlen(tokstart)-1         based on surrounding code.           *
builtin.c  (do_strtonum):  Pass  string  length  to  get_numbase.
        (nondec2awknum): Check  string  length  before  accessing
characters.           *  mpfr.c (force_mpnum): Pass string length
to get_numbase.          * node.c (r_force_number):  Pass  string
length  to get_numbase.          (get_numbase): Add string length
argument and honor it.

2017-01-26         Andrew  J.  Schorr      <aschorr@telemetry-in-
vestments.com>

        *  builtin.c (do_strftime): If format argument is passed,
we need         to terminate it in case it's a field variable.

2017-01-26         Andrew  J.  Schorr      <aschorr@telemetry-in-
vestments.com>

        *  node.c  (r_format_val):  Before we free s->stptr, make
sure that it         was malloced.          (wstr2str): Add  com-
ment  explaining  why  it's safe to free n->stptr         without
doing any checks.          * mpfr.c (mpg_format_val): Ditto.  And
no need to reset the STRCUR flag         that we just checked.

2017-01-26          Andrew  J.  Schorr     <aschorr@telemetry-in-
vestments.com>

        * awk.h (enum block_id): Remove BLOCK_INVALID,  since  it
serves  no         useful purpose and seems to slow things down a
bit.          * node.c (nextfree): Remove first invalid entry.

2017-01-25         Andrew  J.  Schorr      <aschorr@telemetry-in-
vestments.com>

        *  awk.h  (BLOCK):  Remove  typedef. BLOCK was used for 2
different         purposes: to contain a  block  allocation  list
header,  and to hold         each individual allocated item. This
was confusing, because the "size"         field was set  only  in
the header, but not in each element.          (struct block_head-
er): The block header contains a pointer to the first         el-
ement  and the element size.          (struct block_item): Repre-
sent a single allocated item. This contains         only a point-
er  to  the  next  element.  This  reduces  the minimum allocated
        item size from 2 pointers to 1 (16 bytes to  8  bytes  on
x86_64).           (nextfree):  Change array item type from BLOCK
to struct block_header.           (getblock,  freeblock):  Change
cast  from  'BLOCK'  to  'struct  block_item'.           * node.c
(nextfree): Now an array  of  'struct  block_header'  instead  of
        BLOCK. Switch the ordering to put the next pointer before
the size.          (more_blocks): Replace  'BLOCK'  with  'struct
block_item', and add         an assert to ensure that the alloca-
tion size is at least as large          as  'struct  block_item',
i.e. 1 pointer.

2017-01-22          Andrew  J.  Schorr     <aschorr@telemetry-in-
vestments.com>

        * awk.h (numtype_choose): New backend macro used  to  im-
plement         various macros whose calculations depend on how a
number is         actually represented. This improves readability
and  should give         a small performance improvement when not
using extended precision.          (get_number_ui, get_number_si,
get_number_d,  get_number_uj,  iszero):         Rewrite using new
numtype_choose macro.

2017-01-04         Arnold Robbins        <arnold@skeeve.com>

        Trade space for time for programs that toggle  IGNORECASE
a lot.          Brings 25% to 39% speedup.  NODE does not actual-
ly grow in size.

        *  awk.h  (NODE::preg):  Now  an  array  of   size   two.
        [CASE]:  Flag no longer needed, so removed.          (IG-
NORECASE): Change type from int  to  bool.           *  awkgram.y
(make_regnode):   Build   two  copies  of  the  compiled  regexp,
        one without ignorecase, and  one  with.           *  io.c
(RS_re):   Array   replacing  RS_re_yes_case  and  RS_re_no_case.
        (set_RS): Use RS_re[IGNORECASE] as appropriate. Free  and
recompute          as  needed.           *  main.c  (IGNORECASE):
Change type from int to bool.          * re.c  (re_update):  Sim-
plify  the  code.  No need to check CASE flag         any longer.
Recompute only if text of  regexp  changed.           *  symbol.c
(free_bc_internal):    Adjust    to   free   both   elements   of
        m_re_reg.

2017-01-18         Andrew  J.  Schorr      <aschorr@telemetry-in-
vestments.com>

        *  interpret.h  (r_interpret): Increase robustness of the
optimization         logic in Op_assign_concat -- check that  the
node has MALLOC set,         and make sure to wipe all flags oth-
er than MALLOC, STRING, STRCUR,         and possibly WSTRCUR. Use
STFMT_UNUSED define.

2017-01-15          Andrew  J.  Schorr     <aschorr@telemetry-in-
vestments.com>

        * interpret.h (r_interpret): Fix bug in  Op_assign_concat
reported         on Cygwin mailing list. The string concatenation
optimization was         not updating the node correctly by  set-
ting STRING and STRCUR flags         and setting stfmt.

2017-01-06          Andrew  J.  Schorr     <aschorr@telemetry-in-
vestments.com>

        Enhance API  to  support  extended-precision  arithmetic.
        *  awk.h  (enum  block_id): Add new values BLOCK_MPFR and
BLOCK_MPZ.          (make_number_node): New  inline  function  to
reduce  code  duplication          for  creating  numeric  nodes.
        *  gawkapi.h   (gawk_api_major_version):   Bump   to   3.
        (awk_number_t):  New  typedef  to  represent numbers with
varying internal         representations.          (awk_value_t):
For numbers, replace double with awk_number_t.          (num_val-
ue): Redefine.           (num_type,  num_ptr):  New  defines  for
awk_number_t  union members.          (gawk_api_t): Add constants
for version checking:  gmp_major_version,          gmp_minor_ver-
sion,  mpfr_major_version,  and  mpfr_minor_version.          Add
functions api_get_mpfr and api_get_mpz  to  allocate  memory  for
        extended-precision    numbers    to    hand    to   gawk.
        (get_mpfr_ptr,  get_mpz_ptr):  Helper  macros   to   wrap
api_get_mpfr   and          api_get_mpz.           (make_number):
Modify to populate  awk_number_t  correctly.           (make_num-
ber_mpz,   make_number_mpfr):  New  helper  functions  to  create
        extended-precision             numeric             nodes.
        (check_mpfr_version): New macro to check GMP/MPFR version
compatibility         in extensions that want to support  extend-
ed-precision math.          * gawkapi.c (getmpfr, freempfr, getm-
pz, freempz): New macros  to          allocate  and  free  memory
blocks for extended-precision math.          (awk_value_to_node):
For AWK_NUMBER values, support three different          kinds  of
internal   numbers:  double,  mpz_t,  and  mpfr_t.           (as-
sign_number): New helper function to convert a  numeric  node  to
        an  awk_value_t.           (node_to_awk_value):  Use  as-
sign_number to pass  numbers  properly.           (api_get_mpfr):
Implement  new api_get_mpfr hook.          (api_get_mpfz): Imple-
ment new api_get_mpz hook.          (api_impl): Add  GMP  &  MPFR
versions,   api_get_mpfr,   and  api_get_mpz.           *  node.c
(r_make_number):  Use  new   make_number_node   inline   function
        to  reduce  code  duplication.           (nextfree):  Add
block allocators for mpfr_t  and  mpz_t.           (more_blocks):
Add   an   assert  to  protect  against  cases  where  the  block
        size is too  small  to  hold  our  structure.           *
mpfr.c  (mpg_node):  Use  new  make_number_node  inline  function
        to reduce code duplication.

2017-01-04         Arnold Robbins        <arnold@skeeve.com>

        * config.guess, config.sub, compile, depcomp:  Sync  from
latest         in GNULIB.

2016-12-27          Juergen  Kahrs         <Juergen.Kahrs@google-
mail.com>

        * CMakeLists.txt: Updated after adding support library.

2016-12-23         Arnold D. Robbins     <arnold@skeeve.com>

        * configure.ac (GNUPG_CHECK_MPFR): Don't call on  PowerPC
        Macintosh.   C99  and the last version of MPFR that works
on         that platform don't get along. Sigh.

2016-12-22         Arnold D. Robbins     <arnold@skeeve.com>

        * dfa.c: Sync with  GNULIB.           *  intprops.h:  New
file.          * Makefile.am (base_sources): Add intprops.h.

        Unrelated.   Import  GNULIB  fix  for regex: fix integer-
overflow         bug in never-used code.          Problem report-
ed  by  Cl'ement  Pit-Claudel in:         http://lists.gnu.org/ar-
chive/html/emacs-devel/2016-12/msg00654.html         Fix by  Paul
Eggert  <eggert@cs.ucla.edu>:

        * regex_internal.h: Include intprops.h.          * regex-
ec.c (re_search_2_stub): Use it to avoid undefined         behav-
ior on integer overflow.

        Unrelated.  Set up a support directory for externally ob-
tained         support files.

        * Makefile.am  (base_sources,  EXTRA_DIST):  Edit  lists.
        (SUBDIRS): Get ordering right.          (LDADD): Add sup-
port/libsupport.a.          (DEFS): Add -I for support directory.
        *    dfa.c,   dfa.h,   getopt.c,   getopt.h,   getopt1.c,
getopt_int.h,          intprops.h,  localeinfo.c,   localeinfo.h,
random.c,    random.h,           regcomp.c,   regex.c,   regex.h,
regex_internal.c, regex_internal.h,         regexec.c,  verify.h,
xalloc.h: Moved to support.

        Unrelated:  Totally break binary compatibility in the API
        after merging in API min/max changes and REGEX and STRNUM
        support in the API:

        *      gawkapi.c     (valtype2str):     New     function.
        (node_to_awk_value): Minor simplification  in  a  switch.
        (api_flatten_array):  Removed.           (api_flatten_ar-
ray_typed): Use valtype2str in error  message.           (api_im-
pl):  Reorder  functions  to  group  related ones together again.
        *  gawkapi.h  (awk_valtype_t):   Reorder   enum   values.
        (struct  gawk_api):  Remove api_flatten_array field.  Re-
order         functions to group related ones together again.

2016-12-17         Arnold D. Robbins     <arnold@skeeve.com>

        * gawkapi.h (api_add_ext_func): Add comment  about  point
to          awk_ext_func_t  not  being const but gawk doesn't use
it.          * *  interpret.h  (Op_ext_builtin):  Simplify  code,
check only         if do_lint and ! f->suppress_lint and num_args
> max_expected.

2016-12-16         Arnold D. Robbins     <arnold@skeeve.com>

        * gawkapi.h (awk_ext_func_t): Put max  back  before  min.
Restores          source  compatibility,  although  there will be
compile warnings         because of the 3rd argument  for  the  C
function  being missing.          * interpret.h (Op_ext_builtin):
Used size_t instead of int for         the various variables. Add
a check that max expected > 0.

2016-12-14         Arnold D. Robbins     <arnold@skeeve.com>

        MAJOR BREAKING API CHANGE.

        *  awk.h (INSTRUCTION): Update extension function pointer
to         take 3rd argument of pointer to  struct  awk_ext_func.
        *  gawkapi.c  (api_add_ext_func): Update third arg to not
be const.          * gawkapi.h (awk_ext_func_t): Put  min  before
max.     Add     suppress_lint            and    data    pointer.
        [gawk_api_major_version]:       Update       to        2.
        [gawk_api_minor_version]:        Reset        to       0.
        (api_add_ext_func): Update third arg  to  not  be  const.
        * interpret.h (Op_ext_symbol): Revise lint check.

2016-12-12         Arnold D. Robbins     <arnold@skeeve.com>

        *  awk.h  (INSTRUCTION): Replace min_required and max_ex-
pected          with  a  pointer  to  the   extension   functions
awk_ext_func_t  struct.           * ext.c (make_builtin): Store a
pointer to the extension function          struct  into  the  IN-
STRUCTION  instead  of  the  min  and  max.           * gawkapi.h
(awk_ext_func):   Use   size_t   instead   of   unsigned   short.
        Put  min second, which preserves source code compatibili-
ty.          * interpret.h (Op_ext_builtin): Use the pointer  for
the  info         directly. If lint and max_expected > 0 and args
> max_expected         print a message and  set  max_expected  to
zero  so  we only print once         per function. Remove special
case of both min and max being zero.          (Op_ext_func):  Ad-
just creation of the data structures.

2016-12-11         Arnold D. Robbins     <arnold@skeeve.com>

        * dfa.c: Sync with GNULIB.

2016-12-05          Andrew  J.  Schorr     <aschorr@telemetry-in-
vestments.com>

        Add API support for strnum values.           *  gawkapi.c
(awk_value_to_node):  Add  AWK_STRNUM.           (assign_string):
Add a type argument so we can use this for AWK_STRING          or
AWK_STRNUM.           (node_to_awk_value): When AWK_NUMBER is re-
quested, a regex value         should return false,  as  per  the
header  file  documentation.           Add support for AWK_STRNUM
requests. When AWK_REGEX is requested,         implement the cas-
es  properly  instead  of  always  returning  true.           Fix
AWK_SCALAR logic.  For  AWK_UNDEFINED,  rewrite  using  a  switch
        and  support  AWK_STRNUM.           (api_sym_update): Add
AWK_STRNUM.          (api_sym_update_scalar): Add optimized  sup-
port  for  updating  AWK_STRNUM.          (valid_subscript_type):
Add  AWK_STRNUM.           (api_create_value):  Add   AWK_STRNUM.
        *     gawkapi.h    (awk_valtype_t):    Add    AWK_STRNUM.
        (strnum_value): New macro.          (Value  fetching  ta-
ble): Updated.

2016-12-04          Andrew  J.  Schorr     <aschorr@telemetry-in-
vestments.com>

        * gawkapi.c (assign_regex): Do  not  call  assign_string,
since  we          know that a REGEX value is not an unterminated
field string.          * gawkapi.h  (make_regex):  Delete  macro.
        (make_const_regex,  make_malloced_regex):  Add new macros
to replace         make_regex with  necessary  memory  management
support.

2016-12-04          Andrew  J.  Schorr     <aschorr@telemetry-in-
vestments.com>

        * awk.h (fixtype): Remove  conditional  checking  if  the
node type         is Node_val. This is already covered by the as-
sert, and  if  it's  not          true,  we  have  serious  bugs.
        *  builtin.c  (do_typeof): Do not treat Node_var the same
way as         Node_val, since they are different beasts. In  re-
ality, the argument         to this function will never have type
Node_var.

2016-12-04         Andrew  J.  Schorr      <aschorr@telemetry-in-
vestments.com>

        *  gawkapi.h  (awk_element_t):  Remove  obsolete  comment
claiming  that          the  index  will  always  be  a   string.
        (gawk_api_t):  Add  new  api_flatten_array_typed function
and indicate         that api_flatten_array has been  superseded.
        (flatten_array_typed):  New macro to call api_flatten_ar-
ray_typed.          (flatten_array): Redefine using the new flat-
ten_array_typed   macro.           *  gawkapi.c  (api_flatten_ar-
ray_typed): New function renamed  from          api_flatten_array
to flatten an array with the types requested by the         call-
er.   Also   update   the   comments    and    error    messages.
        (api_flatten_array): Now a wrapper around api_flatten_ar-
ray_typed.          (api_impl): Add  new  api_flatten_array_typed
hook.

2016-12-06         Arnold D. Robbins     <arnold@skeeve.com>

        Add minimum required and maximum expected number of argu-
ments         to the API.

        * awk.h (INSTRUCTION): Add new members  min_required  and
max_expected.           * ext.c (make_builtin): Store values from
extension   function   struct           into   the   INSTRUCTION.
        *  gawkapi.h  (awk_ext_func): Add min_required args. Make
both it and          max_expected_args  into  unsigned  short  to
match     type    in    INSTRUCTION.             *    interpret.h
(Op_ext_builtin): Store min_required and max_expected          in
instructions.    Add    checking    code    and    lint   checks.
        (Op_ext_func): Copy min_required  and  max_expected  from
function info.

2016-12-04          Andrew  J.  Schorr     <aschorr@telemetry-in-
vestments.com>

        * gawkapi.h (r_make_string_type): New inline function  to
create  strings          of  any  type,  currently  AWK_STRING or
AWK_REGEX.           (r_make_string):  Now   a   wrapper   around
r_make_string_type.          (make_regex): Convert from an inline
function to a macro that         calls r_make_string_type.

2016-11-30         Arnold D. Robbins     <arnold@skeeve.com>

        * dfa.c: Sync with fixes in GNULIB.

        Unrelated:

        * gawkapi.h (make_regex): New function.

2016-11-29         Arnold D. Robbins     <arnold@skeeve.com>

        Add support for typed regex variables to the API.

        * awk.h (make_typed_regex): Declare function.           *
awkgram.y   (typed_regexp):   Call  make_typed_regex  instead  of
        using inline code.          * gawkapi.h (AWK_REGEX):  New
value  type.           (regex_value):  New macro.          (Value
fetching  table):   Updated.            *   gawkapi.c   (awk_val-
ue_to_node,           node_to_awk_value,          api_sym_update,
        api_sym_update_scalar,   valid_subscript_type,   api_cre-
ate_value):          Add  support  for  AWK_REGEX.           (as-
sign_regex): New function.           (api_flatten_array):  Adjust
comment.           *  node.c  (make_typed_regex):  New  function;
moved code from grammar.

2016-11-29         Arnold D. Robbins     <arnold@skeeve.com>

        Remove redundant flag from dfa:

        *   dfa.c   (dfasyntax):   Use   RE_ICASE   instead    of
DFA_CASE_FOLD.            *   dfa.h   (DFA_CASE_FOLD):   Removed.
        * re.c (make_regexp): Use RE_ICASE  for  regex  and  dfa.
Yay!

        Unrelated:  Don't  have  to  recompute syntax stuff every
time         we compile a regexp.

        * dfa.c (dfacopysyntax): New  function.           (dfaal-
loc): Zero out the newly allocated memory.          * dfa.h (dfa-
copysyntax): Declare it.          * re.c  (make_regexp):  Declare
two  static dfaregs, one for         with and without ignorecase.
Compute the syntax once for each,         then use  dfacopysyntax
to copy the settings when compiling         a regexp.

2016-11-28         Arnold D. Robbins     <arnold@skeeve.com>

        Make gawk compile on HP-UX 11.33.

        *  debug.c  (serialize_list):  Renamed  from `serialize'.
        (unserialize_list): Renamed from `unserialize', for  con-
sistency.

        Unrelated:

        * dfa.c: Sync with GNULIB. Twice in one day.

        Unrelated:   Start   improving   profiling  comments  for
switch/case.

        * awkgram.y (switch_head): New production.

2016-11-21         Arnold D. Robbins     <arnold@skeeve.com>

        * dfa.c: Sync with GNULIB.

2016-11-17         Arnold D. Robbins     <arnold@skeeve.com>

        General cleanup for zero termination of strings.

        * array.c (do_delete): Use  %.*s.           (value_info):
Get  length  and  use %.*s.          (asort_actual): Save and re-
store character after end.          * awkgram.y  (split_comment):
Use   make_string,   not   make_str_node.            *  builtin.c
(do_fflush): Use  %.*s.           (locale_category_from_argument,
do_dcgettext, do_dcngettext,         do_bindtextdomain): Save and
restore  character  after  end.           *   debug.c   (do_info,
print_array,  print_subscript,  do_print_var,         do_set_var,
display,   do_watch,    print_watch_item,    serialize_subscript,
        do_print_f):  Use  %.*s.           *  eval.c  (cmp_nodes,
fmt_index): Save and restore character after end.          *  in-
terpret.h  (r_interpret):  Fix  computation  for concatenation of
        wide strings.           *  io.c  (is_non_fatal_redirect):
Add  length  parameter;  save and         restore character after
last.    Adjust    all    other    declarations    and     calls.
        (do_close):   Save   and  restore  character  after  end.
        *   mpfr.c   (ieee_fmts):   Adjust   table   indentation.
        (do_mpfr_strtonum):  Clear  wide  string  members  of the
union.          * msg.c (err): Use %.*s.

2016-11-07         Arnold D. Robbins     <arnold@skeeve.com>

        * awk.h [USER_INPUT]: Renamed from MAYBE_NUM.           *
builtin.c,    eval.c,   field.c,   int_array.c,   io.c,   main.c,
        mpfr.c, node.c: Change all uses.

2016-11-15         Arnold D. Robbins     <arnold@skeeve.com>

        Finish reworking typed regexes.

        * awk.h (typed_re):  Replaces  tre_reg.           *  awk-
gram.y  (typed_regexp  production):  Node_val points to a regular
        Node_regex  and  also  has  string  value   and   length.
        (make_regnode):  Simplified  back  to  its original form.
        * builtin.c (call_sub, call_match, call_split_func):  For
REGEX,          get  n->typed_re.           *  field.c (do_split,
do_patsplit): Ditto, for separator regexp.           *  profile.c
(pprint):  Op_match_rec,  handle REGEX correctly.          * re.c
(re_update): If REGEX, get t->typed_re->re_reg.

2016-11-15         Arnold D. Robbins     <arnold@skeeve.com>

        Start reworking typed regexes.

        * awk.h (Node_typedregex): Nuked.           [REGEX]:  New
flag.           (tre_reg):  New member in val part of NODE union.
        (force_string,  force_number,  fixtype):  Remove  use  of
Node_typedregex.           *  awkgram.y (grammar): Use REGEX flag
instead    of    node    type.              (valinfo);     Ditto.
        (make_regnode):  Adjust  creation  based  on  node  type.
        * builtin.c (do_length, do_print,  call_sub,  call_match,
        call_split_func,  do_typeof): Adjust code.          * de-
bug.c        (watchpoint_triggered,        initialize_watch_item,
        print_memory):  Adjust  code.           *  eval.c  (node-
types): Remove Node_typedregex.          (flags2str): Add  REGEX.
        (setup_frame):  Adjust  code  after removal of Node_type-
dregex.          * interpret.h (r_interpret): Adjust  code  after
removal            of   Node_typedregex.            *   profile.c
(pp_typed_regex):       Renamed       from       pp_strong_regex.
        (pp_string_or_strong_regex):         Renamed         from
pp_string_or_strong_regex.          (pprint): Adjust  code  after
removal  of  Node_typedregex.          * re.c (re_update): Adjust
code after removal of Node_typedregex.

2016-11-04  Eli Zaretskii  <eliz@gnu.org>

        *     builtin.c     (efwrite)     [__MINGW32__]:     Call
w32_maybe_set_errno if         errno is not set or set to EINVAL.

        *  nonposix.h  (w32_maybe_set_errno)  [__MINGW32__]:  Add
prototype.

2016-11-01         Arnold D. Robbins     <arnold@skeeve.com>

        * eval.c (flags2str): Add NO_EXT_SET and NUMCONSTSTR.

2016-10-31         Arnold D. Robbins     <arnold@skeeve.com>

        Fix valgrind issues.

        * io.c (init_awkpath): Need to allocate max_path+3 point-
ers.          * awkgram.y (make_profile_number): Need to add STR-
CUR flag and         set n->stfmt to STFMT_UNUSED. See  the  com-
ment in the code.

2016-10-26         Arnold D. Robbins     <arnold@skeeve.com>

        * io.c (init_awkpath): Set max path len for leading sepa-
rator.

2016-10-25         Arnold D. Robbins     <arnold@skeeve.com>

        * io.c (init_awkpath): Restore documented behavior where-
by         null elements represent the current directory. Sheesh.
        Bug reported by "Jun T." <takimoto-j@kba.biglobe.ne.jp>.

        Disallow negative arguments to the bitwise functions.

        * NEWS: Document this.          *  builtin.c  (do_lshift,
do_rshift,  do_and,  do_or, do_xor, do_compl):         Make nega-
tive arguments a fatal error.          *  mpfr.c  (do_mpfr_compl,
get_intval): Ditto.

2016-10-23         Arnold D. Robbins     <arnold@skeeve.com>

        *  General:  Remove trailing whitespace from all relevant
files.          * mpfr.c: Replace Unicode sequences  with  ASCII.
        * cint_array.c: Ditto.

2016-10-16         Arnold D. Robbins     <arnold@skeeve.com>

        * awkgram.y: Typo fix in call to add_sign_to_num.

2016-10-16         Arnold D. Robbins     <arnold@skeeve.com>

        *  awk.h  (enum opcodeval): Add Op_unary_plus.          *
awkgram.y (add_sign_to_num): New routine to  put  in  a  sign  on
        profiling  constants.   Call it as necessary.          In
unary plus production, use new opcode, or set up  a          con-
stant   as   for   unary   minus.            (negate_num):   Call
add_sign_to_num instead of doing it directly.           *  eval.c
(optypetab):  Add entry for Op_unary_plus.          * interpret.h
(r_interpret): Add case for Op_unary_plus.           *  profile.c
(pprint, prec_level, is_scalar): Ditto.

2016-10-13         Arnold D. Robbins     <arnold@skeeve.com>

        * dfa.c: Sync with GNULIB.

2016-10-12         Arnold D. Robbins     <arnold@skeeve.com>

        * awkgram.y (make_profile_number): Allocate an extra byte
for the         string, so there's room for a minus if necessary.
Store  ' '         in the right place.          (negate_num): Use
memmove to shift the string up and then         insert  a  minus,
instead of doing a fresh alloc + copy + free.

2016-10-11         Arnold D. Robbins     <arnold@skeeve.com>

        *  awk.h  (NUMCONSTSTR):  New flag value.          * awk-
gram.y (make_profile_number): New function. Use it          wher-
ever  we  make  a  number.   This  calls make_number and then, if
        pretty printing, save the original string value and  sets
NUMCONSTSTR.           (negate_num):  If  NUNCONSTSTR set, update
the saved string value.          * profile.c (pp_number):  Assert
NUMCONSSTR set, use that value.          Remove previous code.

2016-09-24  Eli Zaretskii  <eliz@gnu.org>

        *  debug.c  (restart) [__MINGW32__]: Cast 2nd argument of
execvp to         avoid compiler warnings  about  prototype  mis-
match.    Reported   by           Marc  de  Bourget  <marcdebour-
get@gmail.com>.

2016-09-09         Norihiro Tanaka      <noritnk@kcn.ne.jp>

        * awk.h (struct Regexp): Remove member  has_anchor.   All
uses  removed.           *  re.c (make_regexp, research): Use dfa
matcher for regex with anchor.

2016-09-09         Arnold D. Robbins     <arnold@skeeve.com>

        * dfa.c: Sync with grep.

2016-09-08  Paul Eggert  <eggert@cs.ucla.edu>

        *  dfa.c,  dfa.h:  Sync  with   grep.            *   re.c
(make_regexp): Adjust to DFA API changes.

2016-09-08         Arnold D. Robbins     <arnold@skeeve.com>

        * command.y: Update license text to version 3. Oops.

2016-09-07         Arnold D. Robbins     <arnold@skeeve.com>

        *  cmd.h,  debug.c: Update license text to version citing
        GPLv3+  and  with  correct   FSF   address.   Thanks   to
        David  Kaspar  <dkaspar@redhat.com>  for pointing out the
need.

2016-09-02         Arnold D. Robbins     <arnold@skeeve.com>

        * dfa.c: Sync with grep.

2016-09-01         Arnold D. Robbins     <arnold@skeeve.com>

        Merge grep's now thread-safe dfa. Wheee.

        * dfa.h, dfa.c: Sync with grep.          *  localeinfo.h,
localeinfo.c,   verify.h:   New   files.           *  Makefile.am
(base_sources): Adjust.          *  awk.h  (using_utf8):  Declare
new  function.           *  node.c (str2wstr): Use using_utf8 in-
stead of now-gone dfa function.          * re.c: Include "locale-
info.h".              (localeinfo):    New    static    variable.
        (make_regexp): Adjust call to  dfa_syntax.           (re-
setup):  Call  init_localeinfo  on  localeinfo.  Remove  call  to
        now-gone function  dfa_init.           (using_utf8):  New
function.

2016-08-29         Arnold D. Robbins     <arnold@skeeve.com>

        *   configure.ac   (fwrite_unlocked):   Check   for   it.
        * awk.h (fwrite): Define to fwrite_unlocked  if  we  have
it.          * NEWS: Make note of speed improvement.

2016-08-25         Arnold D. Robbins     <arnold@skeeve.com>

        POSIX  now  says use strcmp for == and !=. Thanks to Chet
Ramey         for pointing me at the change.  Make it so:

        * awk.h (cmp_nodes): New 3rd param indicating strcmp, not
strcoll.           * debug.c (cmp_val): Update call to cmp_nodes.
        * eval.c (cmp_nodes): New 3rd  param  indicating  strcmp,
not    strcoll.             Adjust    code   and   all   callers.
        (scalar_cmp_t):   New   enum   type.    Used    in    ...
        (cmp_scalars):  ... in order to call cmp_nodes correctly.
        * interpret.h: Use the enum type in calls to cmp_scalars.
        * re.c (re_update): Adjust call to cmp_nodes.

2016-08-25         Norihiro Tanaka      <noritnk@kcn.ne.jp>

        *  awk.h (struct Regexp): Remove dfa.  Now dfareg instead
of it.  All         referers changed.          * re.c (research):
Arrange  caller  of dfaexec and research.          * (avoid_dfa):
Removed.  All callers changed.          * awk.h (avoid_dfa):  Re-
moved.

        Other changes by Arnold Robbins:

        *  awk.h  (struct Regexp): Change various boolean members
to bool.          (RE_NO_FLAGS): New #define.           *  inter-
pret.h:  Use  RE_NO_FLAGS  instead  of zero.          * re.c (re-
search): Prettify the logic a little bit.

2016-08-25         Arnold D. Robbins     <arnold@skeeve.com>

        * dfa.c: Sync with grep.

2016-08-25         Arnold D. Robbins     <arnold@skeeve.com>

        * 4.1.4: Release tar ball made.

2016-08-23         Arnold D. Robbins     <arnold@skeeve.com>

        * dfa.h: Sync with grep. API changes.           *  dfa.c:
Sync  with  grep.           *  re.c (make_regexp): Adjust for API
changes, move call to dfasyntax         into stanza that compiles
the  regex.           (resetup): Call dfa_init.          * node.c
(str2wstr): using_utf8 is now called dfa_using_utf8.

        Unrelated:

        * Makefile.am: Quote all uses of  $(srcdir)  and  $(dist-
dir).          (spell): New target.

2016-08-18         Arnold D. Robbins     <arnold@skeeve.com>

        * dfa.c: Sync with grep.

2016-08-15          Andrew  J.  Schorr     <aschorr@telemetry-in-
vestments.com>

        * int_array.c (is_integer): Fix merge of  stable  changes
to  remove         obsolete string formatting check that has been
superseded by         the new standard_integer_string check.

2016-08-14         Arnold D. Robbins     <arnold@skeeve.com>

        * re.c (make_regexp): Only call dfasyntax if actually us-
ing           dfa.   Gives   a   14%   speedup   on   this  test:
https://raw.githubusercontent.com/chadbrewbaker/awka/mas-
ter/benchmark/regexp.awk.              From     blathering     in
comp.lang.awk.

2016-08-12         Arnold D. Robbins     <arnold@skeeve.com>

        * dfa.c: Sync with GNU grep.

        Unrelated:

        * int_array.c: Minor text and formatting edits.

2016-08-09         Andrew  J.  Schorr      <aschorr@telemetry-in-
vestments.com>

        * awk.h: Add a comment explaining the NUMINT flag in more
detail.           *  int_array.c  (standard_integer_string):  New
function  to  test whether         a string matches what would be
produced by sprintf("%ld", <value>).           (is_integer):  Fix
bug -- if NUMBER was set, then the function was         accepting
strnum  values  with  nonstandard  string   representations.   We
        now call standard_integer_string to check that the string
looks OK.          Also added ifdef'ed code to simplify the func-
tion  by  relying  upon         force_number to parse the string,
but this is disabled due to possible         negative performance
impact.

2016-08-03         Arnold D. Robbins     <arnold@skeeve.com>

        Remove typed regexes until they can be done properly.

        * NEWS: Updated.          * awk.h (enum nodevals): Remove
Node_typedregex.           (force_string,  force_number):  Remove
check  for  Node_typedregex.          * awkgram.y (TYPED_REGEXP):
Remove token.          (grammar): Remove productions  related  to
typed  regexps.          (yylex): Don't find a typed regex or re-
turn it.          (valinfo):  Remove  code  for  Node_typedregex.
        *  builtin.c  (do_length, do_print, call_sub, call_match,
        call_split_func, do_typeof): Remove code  for  Node_type-
dregex.           * debug.c (watchpoint_triggered, print_memory):
Remove code         for Node_typedregex.          * eval.c (node-
types,  setup_frame): Remove code for Node_typedregex.          *
interpret.h  (r_interpret):  Remove  code  for   Node_typedregex.
        *  profile.c  (pprint):  Remove code for Node_typedregex.
        (pp_strong_regex):                               Removed.
        (pp_string_or_strong_regex):  Remove  code for Node_type-
dregex.          * re.c (re_update): Remove code  for  Node_type-
dregex.

2016-08-01         Arnold D. Robbins     <arnold@skeeve.com>

        * README, NEWS: Mark DJGPP port as unsupported.

2016-08-01          Andrew  J.  Schorr     <aschorr@telemetry-in-
vestments.com>

        * mpfr.c (mpg_tofloat): Always  set  precision  to  avoid
hysteresis  effects          from previous calculations using the
same temporary mpfr variables.

2016-08-01         Andrew  J.  Schorr      <aschorr@telemetry-in-
vestments.com>

        *  mpfr.c (default_prec): Add new static variable to show
current  PREC          setting  in  effect.           (init_mpfr,
set_PREC):  Save  mpfr_set_default_prec  argument  in         de-
fault_prec.          (do_mpfr_func): If the argument's  precision
exceeds  the default         precision, boost the result's preci-
sion to match it. This fixes a         bug where we used to  copy
the  argument's  precision,  regardless of         whether it was
higher or lower than the PREC setting.

2016-07-24         Norihiro Tanaka      <noritnk@kcn.ne.jp>

        * re.c (research): Now that  the  dfa  matcher  correctly
runs  even          in  multibyte  locales,  try  it  if  even if
need_start is true.          However, if start  >  0,  avoid  dfa
matcher,  since it can't handle         the case where the search
starts in the middle of a string.

        Unrelated:

        * eval.c (load_casetable): Reset casetable[i] to `i' if i
        should not be mapped to upper case. Fixes inconsistencies
between         dfa and regex in some single bytes  locales;  no-
tably el_GR.iso88597.

2016-07-23         Arnold D. Robbins     <arnold@skeeve.com>

        Make  result  of  close on a pipe match result of system.
        Thanks to Mike Brennan for the encouragement.

        *   awk.h   (sanitize_exit_status):   Declare    routine.
        *    builtin.c   (sanitize_exit_status):   New   routine.
        (do_system): Use it.          * io.c (close_rp):  Use  it
on pclose result.          (gawk_pclose): Use it.

2016-07-23          Andrew  J.  Schorr     <aschorr@telemetry-in-
vestments.com>

        * builtin.c  (do_print):  Improve  logic  for  formatting
        numeric values.

2016-07-19          Andrew  J.  Schorr     <aschorr@telemetry-in-
vestments.com>

        * eval.c (set_LINT): Simplify the code considerably.

2016-07-19         Arnold D. Robbins     <arnold@skeeve.com>

        * awkgram.y (shadow_funcs): Change  test  at  end  to  be
        `lintfunc  ==  r_fatal' instead of `lintfunc != warning'.
        Thank to Andrew Schorr for the suggestion.

2016-07-18         Arnold D. Robbins     <arnold@skeeve.com>

        * main.c (locale_dir): New variable,  init  to  LOCALEDIR
(set  by          configure).           (set_locale_stuff):  Move
calls to bindtextdomain and         textdomain to here; they must
be  done after calling setlocale.          Use locale_dir instead
of LOCALEDIR.          (main): Move call to set_locale_stuff() to
before  parsing arguments.          Check for GAWK_LOCALE_DIR env
var and use it if there. If doing         locale debugging,  call
set_locale_stuff again if arg parsing changed         the locale.

        Unrelated:

        * dfa.c: Sync with GNU grep.

        Unrelated:

        * config.sub: Updated from GNULIB.

2016-07-17         Arnold D. Robbins     <arnold@skeeve.com>

        *  eval.c  (set_LINT):  Reset  lintfunc  to `warning' for
LINT="invalid".          Thanks to Andy Schorr for the report.

2016-07-08         Andrew  J.  Schorr      <aschorr@telemetry-in-
vestments.com>

        *  awk.h:  Restore  previous  comment  about unterminated
strings, since          I  am  removing  the  string  termination
patches  from  field.c          (free_api_string_copies): Declare
new gawkapi function.          *  builtin.c  (do_mktime,  do_sys-
tem):  Restore  temporary  string          termination to protect
against unterminated field values.          (nondec2awknum):  Re-
move  comment  about  unnecessary  termination.          * eval.c
(posix_compare): Restore temporary string termination.          *
field.c    (databuf):    Remove   struct,   no   longer   needed.
        (set_field): Remove memcpy for string termination,  since
we   will   support          unterminated  field  string  values.
        (rebuild_record): Ditto. Also no need to  allocate  space
for    terminated            string    copies.             (allo-
cate_databuf): Remove function, since memory management can again
        be done inside set_record.          (set_record): Restore
inline buffer management logic.           (reset_record):  Remove
calls  to allocate_databuf, since we no longer         need space
for  making  terminated  copies  of  field  strings.            *
gawkapi.c  (free_api_string_copies): New function to free strings
        that we made to provide terminated copies  to  API  func-
tions.          (assign_string): New function to convert a string
to an awk_value,         making sure to copy it  if  we  need  to
terminate  it.          (node_to_awk_value): Use assign_string to
return string values  with          NUL  termination  protection.
        * int_array.c (is_integer): Restore temporary string ter-
mination.             *    interpret.h    (Op_push_i):     Ditto.
        (Op_ext_builtin):  After  external function returns, call
        free_api_string_copies to free temporary  string  copies.
        * mpfr.c (force_mpnum): Restore temporary string termina-
tion.           *  node.c  (r_force_number,  get_ieee_magic_val):
Ditto.

2016-07-08         Arnold D. Robbins     <arnold@skeeve.com>

        * dfa.c: Sync with GNU grep.

        Unrelated:

        *  builtin.c  (do_print):  Coding  style  change.   (This
change  obsoleted          by  earlier  changes  in  the  fixtype
branch.)

2016-07-06          Andrew  J.  Schorr     <aschorr@telemetry-in-
vestments.com>

        * awk.h: Modify comments to indicate that MAYBE_NUM  will
now be         left enabled to indicate strnum values by the NUM-
BER|MAYBE_NUM         combination, whereas STRING|MAYBE_NUM indi-
cates  a  potential  strnum.          (fixtype): Modify MAYBE_NUM
test to avoid calling force_number if         NUMCUR  is  already
set.           *  builtin.c  (do_typeof): Call fixtype to resolve
argument type.          This forces parsing of  numeric  strings,
so  there's a performance         penalty, but we must do this to
give a correct result. The meaning          of  "strnum"  changes
from  "potential  strnum"  to  "actual strnum".          * eval.c
(set_TEXTDOMAIN): Remove some  dead  code  left  over  from  last
        patch.            *   int_array.c  (is_integer):  When  a
MAYBE_NUM is converted successfully         to  a  NUMBER,  leave
the MAYBE_NUM flag enabled.          * mpfr.c (mpg_force_number):
Ditto.          * node.c (r_force_number): Ditto.

2016-07-06         Andrew  J.  Schorr      <aschorr@telemetry-in-
vestments.com>

        *  awk.h:  Modify  stptr  comment  to  indicate  that all
strings  are  now          NUL-terminated.           *  builtin.c
(do_mktime):  Remove  unnecessary  logic to terminate         the
string  with   ' '   temporarily.            (do_system)   Ditto.
        (nondec2awknum):   Add   a   comment  about  termination.
        *  eval.c  (posix_compare):  Remove  logic  to  terminate
strings  temporarily.           (set_ORS):  No  need to terminate
ORS, since the string node is  already          terminated.  What
gave  us  the right to modify that node anyway?          (fmt_in-
dex): Remove code to terminate string. This seems  to  have  been
        invalid   anyway,   since   we  don't  own  that  memory.
        (set_TEXTDOMAIN): Do  not  terminate  TEXTDOMAIN  string,
since  the node         is already terminated. We didn't have the
right to modify that node          anyway.           *  gawkapi.c
(node_to_awk_value):  Add  assert  checks  to  confirm  that  the
        string is NUL-terminated.           *  gawkapi.h:  Modify
awk_string  comment  to  indicate that strings are         always
terminated with ' '.          * int_array.c  (isinteger):  Remove
unnecessary  logic to terminate string         with ' ' temporar-
ily.          * interpret.h (Op_push_i): Ditto.           *  io.c
(nextfile):  Remove string termination. We didn't own that memory
        anyway.          * mpfr.c (force_mpnum): Remove  unneces-
sary  logic to terminate the         string with ' ' temporarily.
        * node.c (r_force_number): Remove NUL termination  around
strtod call,         since we already know that there is either a
white space or ' '         character there. Either one will  stop
strtod.           (get_ieee_magic_val):  Ditto.           *  pro-
file.c (pp_number): No  need  to  terminate  string  returned  by
        r_format_val.

2016-07-06          Andrew  J.  Schorr     <aschorr@telemetry-in-
vestments.com>

        * interpret.h (Op_field_spec): Now that all $n field val-
ues  are         NUL-terminated, there is no reason to call dupn-
ode for $n where n > 0.          This saves  malloc  and  copying
overhead,  thereby  more  than offsetting the         performance
hit  of  the  additional  copying  and  NUL-termination  in   the
        last  patch to field.c. It also eliminates repeated pars-
ing in cases         where $n, for n > 1, was accessed more  than
once  in a numeric context,         so the new approach should be
a performance win.

2016-07-06         Andrew  J.  Schorr      <aschorr@telemetry-in-
vestments.com>

        Make  sure  that  all  field  values,  and  therefore all
strings inside gawk,         are terminated with a ' ' character!

        * field.c (databuf): New static struct to hold info about
our   buffer   to           contain   the  field  string  values.
        (allocate_databuf): New function to make sure the databuf
is  large         enough to hold $0 and copies of $1 through $NF.
        (set_field): Copy $n into free space previously allocated
in  databuf          and  add  a  ' '  at  the end.          (re-
build_record): Call allocate_databuf to ensure  sufficient  space
        for copying non-malloced field values. When copying field
values,         use databuf  to  create  a  NUL-terminated  copy.
        (purge_record):  New function extracted from reset_record
to  initialize           $1   through   $NF   to   null   values.
        (set_record):   Buffer  management  moved  to  new  allo-
cate_databuf function.          Call purge_record instead of  re-
set_record,  since reset_record contains         some extra logic
not  needed   in   this   case.            (reset_record):   Call
purge_record  to  do  most  of  the  work, and call         allo-
cate_databuf to make sure we have a big enough buffer to  contain
        copies of the $1 through $NF.

2016-07-06          Andrew  J.  Schorr     <aschorr@telemetry-in-
vestments.com>

        * awk.h: Renumber flags to remove gap created when  FIELD
was removed.

2016-07-05          Andrew  J.  Schorr     <aschorr@telemetry-in-
vestments.com>

        * field.c (rebuild_record): Need to set MALLOC flag if we
allocate          memory  for a residual field node with valref >
1.

2016-07-05         Andrew  J.  Schorr      <aschorr@telemetry-in-
vestments.com>

        *  field.c  (rebuild_record): Do not bother to create new
field nodes         to replace malloc'ed  nodes  when  rebuilding
$0.

2016-07-05          Andrew  J.  Schorr     <aschorr@telemetry-in-
vestments.com>

        * awk.h (FIELD): Remove unnecessary flag.           (MAL-
LOC):  Move  definition  to join the others, and improve the com-
ment.          * array.c (value_info): Replace  FIELD  test  with
MALLOC  test.           *  eval.c (flags2str): Remove FIELD flag.
        *  field.c   (init_fields):   Remove   FIELD   bit   from
Null_field->flags.           (set_field):  Remove  FIELD bit from
flags.          (rebuild_record): Test against MALLOC instead  of
FIELD.  If  a field         node has valref > 1, we should make a
copy, although I don't think         it is valid for this to hap-
pen.            (set_record):   Remove   FIELD  bit  from  flags.
        * interpret.h (UNFIELD): Add  comment,  and  test  MALLOC
flag instead of         FIELD. Remove probably buggy code to dis-
able the FIELD flag when         valref is  1;  that  would  have
created  a  node  where neither the FIELD         nor MALLOC flag
was set, which seems invalid.          * node.c (r_dupnode):  Re-
move code disabling FIELD flag.

2016-07-04          Andrew  J.  Schorr     <aschorr@telemetry-in-
vestments.com>

        * awk.h (force_string_fmt): New inline  function  to  get
the   string           representation   in  a  requested  format.
        (force_string):   Reimplement   as    a    macro    using
force_string_fmt   function.            (force_string_ofmt):  New
macro to get a value's OFMT representation.          *  builtin.c
(do_print):   Use   new   force_string_ofmt   macro   instead  of
        duplicating the logic inline.

2016-07-04         Andrew  J.  Schorr      <aschorr@telemetry-in-
vestments.com>

        *  str_array.c  (str_lookup):  There  is no need to worry
about the         MAYBE_NUM flag, since the code has been patched
to  make sure to         preserve the string value of strnum val-
ues, and the integer array         code should no longer  mistak-
enly  claim  a  strnum  integer with a         nonstandard string
representation.

2016-07-03         Andrew  J.  Schorr      <aschorr@telemetry-in-
vestments.com>

        *  field.c  (rebuild_record):  Revert warning message re-
garding flags,         since I'm not yet totally  confident  that
it  is  invalid  to have FIELD         and MALLOC set at the same
time.

2016-07-03         Andrew  J.  Schorr      <aschorr@telemetry-in-
vestments.com>

        *  field.c  (rebuild_record):  Do not turn off the STRING
flag when         copying a FIELD node, and issue  a  warning  if
MALLOC is enabled.

2016-07-01         Arnold D. Robbins     <arnold@skeeve.com>

        *  array.c  (value_info): Print something reasonable when
stfmt         is -1.          *  mpfr.c  (mpg_format_val):  Don't
cast  index  to  char.           *  node.c (r_format_val): Ditto.
        Thanks to Andrew Schorr for pointing these out.

        Unrelated:

        *  gawkapi.c  (api_warning):  Fix  the  comment   header.
        (api_lintwarn):  Factor  out  the call to va_end to after
the if.

        Unrelated:

        * symbol.c (get_symbols): Add FUNCTAB and SYMTAB  to  the
list         for the -d option.          * awkgram.y (dump_vars):
Allow "-" to mean print to  stdout.           Thanks  to  Hermann
Peifer for the reports.

2016-06-30         Arnold D. Robbins     <arnold@skeeve.com>

        * node.c (r_force_number): Coding style change.

2016-06-30          Andrew  J.  Schorr     <aschorr@telemetry-in-
vestments.com>

        * awk.h (STFMT_UNUSED): New define  indicating  that  the
string         representation does not depend on CONVFMT or OFMT.
        (force_string): Use STFMT_UNUSED to improve code clarity.
        *  array.c  (value_info):  Fix  stfmt  logic.           *
builtin.c (do_print): Use STFMT_UNUSED to improve  code  clarity.
        *   field.c  (set_record):  Ditto.           *  gawkapi.c
(api_sym_update_scalar): Ditto.          * int_array.c  (is_inte-
ger): Check stfmt equals STFMT_UNUSED before         bothering to
inspect  the  string.           *  mpfr.c  (mpg_format_val):  Use
STFMT_UNUSED  to improve code clarity.          Remove buggy cast
to char in stfmt assignment.           *  node.c  (r_format_val):
Ditto.           *  str_array.c (str_lookup): Use STFMT_UNUSED to
improve code clarity.           *  symbol.c  (check_param_names):
Ditto.

2016-06-29          Andrew  J.  Schorr     <aschorr@telemetry-in-
vestments.com>

        * node.c (r_force_number): Optimize by  trimming  leading
and  trailing          white  space  before we inspect the string
contents.           (get_ieee_magic_val):  Must   terminate   the
string with ' ' before         calling strtod.

2016-06-27          Andrew  J.  Schorr     <aschorr@telemetry-in-
vestments.com>

        * gawkapi.h (awk_string): Add comment about the potential
lack of         NUL-termination.

2016-06-27          Andrew  J.  Schorr     <aschorr@telemetry-in-
vestments.com>

        * awk.h: Add a comment regarding the  potential  lack  of
NUL-termination         for Node_val strings.

2016-06-27          Andrew  J.  Schorr     <aschorr@telemetry-in-
vestments.com>

        * node.c (r_format_val): Do not free stptr unless  STRCUR
is  set.           This is safer than testing for non-NULL stptr,
since, for example,         pp_number copies  a  node  and  calls
r_format_val,  but  does  not bother         to set stptr to NULL
beforehand.

2016-06-26         Andrew  J.  Schorr      <aschorr@telemetry-in-
vestments.com>

        *  node.c  (r_force_number):  When  checking for trailing
spaces, protect          against  running  off  the  end  of  the
string.          * mpfr.c (force_mpnum): Ditto.

2016-06-26          Andrew  J.  Schorr     <aschorr@telemetry-in-
vestments.com>

        * builtin.c (do_print): There's  actually  no  reason  to
test  whether  a         value is a number, since the STRCUR flag
and stfmt value contain all         the  necessary  info,  as  in
awk.h:force_string.

2016-06-26          Andrew  J.  Schorr     <aschorr@telemetry-in-
vestments.com>

        * builtin.c (do_print): Do not use OFMT to  print  strnum
values.  We          accomplish  this by calling format_val for a
NUMBER only         if there is no string currently available, or
if stfmt equals         neither -1 nor OFMTidx.

2016-06-26         Arnold D. Robbins     <arnold@skeeve.com>

        *  awk.h:  Edit  some  comments. Add others. Minor coding
style changes.          * builtin.c (format_tree): Restore a com-
ment.           (do_mktime): Restore saving/restoring of byte af-
ter format string.          (do_sub): Coding style. Use  %.*s  in
warning message.          (nondec2awknum): Restore saving/restor-
ing  of  byte  after  string   value           being   converted.
        *  eval.c:  Minor  coding style edits.          * int_ar-
ray.c (is_integer): Fix order of checks for not          updating
string   value:   check   length  ==  0  before  testing  values.
        Coding style edits.          * mpfr.c (do_mpfr_strtonum):
Coding  style  edits.          * node.c (r_force_number): Restore
saving/restoring of byte after         string  value  being  con-
verted. Edit comments some.

2016-06-26         Arnold D. Robbins     <arnold@skeeve.com>

        Repair  change  of  2015-08-25  to handling of MAYBE_NUM.
        *  mpfr.c  (mpg_force_number):  Just   clear   MAYBE_NUM.
        *  node.c (r_force_number): Clear STRING separately after
        setting NUMBER.

        Thanks  to  Andrew  Schorr  for  reporting  the  problem.
        A test case will eventually be merged into master.

        Only in stable and master.

2016-06-20          Andrew  J.  Schorr     <aschorr@telemetry-in-
vestments.com>

        * builtin.c (do_strftime): Call fixtype  before  checking
flags  for         STRING type.          (do_print): Call fixtype
before checking whether argument is a NUMBER.           *  eval.c
(set_BINMODE):   Call   fixtype   before   checking  value  type.
        No need to call force_number if the flags say it's a num-
ber.          (r_get_field): Fix lint check for non-numeric argu-
ment.          * io.c (redirect): Call  fixtype  before  checking
whether it's a string.

2016-06-18          Andrew  J.  Schorr     <aschorr@telemetry-in-
vestments.com>

        * node.c (r_force_number): Fix typo in comment.

2016-06-16         Arnold D. Robbins     <arnold@skeeve.com>

        * awk.h:  Add  comment  headers  for  several  functions.
        *  builtin.c  (nondec2awknum):  Actually set a ' ' before
        calling to strtod() so that the save and restore do some-
thing.

2016-06-15         Arnold D. Robbins     <arnold@skeeve.com>

        * config.sub: Update from GNULIB.

2016-06-14          Andrew  J.  Schorr     <aschorr@telemetry-in-
vestments.com>

        * awk.h (boolval): New  inline  function  to  standardize
testing  whether          a  node's  value  is  true.           *
builtin.c (do_strftime): Use  boolval  to  handle  3rd  argument.
        *   eval.c   (set_IGNORECASE,  eval_condition):  Use  new
boolval function.          * io.c (pty_vs_pipe): Use new  boolval
function.

2016-06-14          Andrew  J.  Schorr     <aschorr@telemetry-in-
vestments.com>

        * builtin.c (do_strftime): Fix handling of  3rd  argument
to work         as a standard boolean: non-null or non-zero.

2016-06-14          Andrew  J.  Schorr     <aschorr@telemetry-in-
vestments.com>

        * gawkapi.c  (node_to_awk_value):  When  caller  requests
AWK_SCALAR          or AWK_UNDEFINED, we need to call fixtype be-
fore we check the type.

2016-06-13         Andrew  J.  Schorr      <aschorr@telemetry-in-
vestments.com>

        *  awkgram.y:  Eliminate STRCUR tests. Must use STRING to
test whether         a scalar is a string.

2016-06-12         Andrew  J.  Schorr      <aschorr@telemetry-in-
vestments.com>                    *  awk.h: Improve comment about
STRING and NUMBER type assignment.          (nondec2awknum):  Add
endptr argument.          (fixtype): New inline function to clar-
ify a scalar's  type.           *  array.c  (sort_up_value_type):
Call  fixtype before checking the value         types.          *
awkgram.y (yylex): Pass NULL endptr  argument  to  nondec2awknum.
        (valinfo):  Remove dead tests: either STRING or NUMBER or
both         must be set, so there's no reason to  continue  with
checks   for   NUMCUR  or          STRCUR.           *  builtin.c
(do_exp, do_int,  do_log,  do_sqrt,  do_sin,  do_cos,  do_srand):
        Fix     lint     check    for    non-numeric    argument.
        (do_string): Fix lint check for 1st and  2nd  args  being
strings.          (do_length): Fix assert to allow for Node_type-
dregex.           Fix  lint  check   for   non-string   argument.
        (format_tree):  Fix  type  detection  for '%c' arguments.
        (do_strftime): Fix lint check for non-numeric  2nd  argu-
ment   and           lint  check  for  non-string  1st  argument.
        (do_mktime): Fix  lint  check  for  non-string  argument.
Eliminate  useless          logic to save and restore terminating
NUL.          (do_system, do_tolower, do_toupper): Fix lint check
for  non-string          argument.          (do_atan2, do_lshift,
do_rshift, do_and, do_or, do_xor,  do_compl,          do_intdiv):
Fix  lint checks for non-numeric args.          (do_sub): Attempt
to clean up treatment of 3rd argument to  gensub          despite
vague  documentation  of expected behavior.          (do_strnum):
Fix  bug  in  number  detection  logic,  and  pass   new   endptr
        arg to nondec2awknum.          (nondec2awknum): Add endp-
tr argument so caller can detect how much         of  the  string
was consumed. Eliminate unnecessary logic to save         and re-
store terminating NUL char.          (do_typeof): Use a switch to
specify  which  cases  are supported, and         issue a warning
message when a  corrupt  type  is  detected.           *  debug.c
(print_memory):   At  least  one  of  NUMBER  and  STRING  should
        be set, so no need to check for NUMCUR or STRCUR in addi-
tion.           * eval.c (cmp_nodes): Use fixtype function to fix
arg types.          (set_IGNORECASE): Fix  logic  for  acting  on
value type. Note that         setting IGNORECASE to a string val-
ue of "0" with NUMCUR  set  now  enables          ignorecase,  so
that's   a   subtle  change  in  behavior  that  seems  to  match
        the docs.          (set_LINT): Try to clean up configura-
tion logic based on type.          * ext.c (get_argument): Remove
unused variable pcount.          * gawkapi.c (node_to_awk_value):
Remove pointless test for NUMCUR         after calling force_num-
ber. Similarly, no need to test for STRCUR         after  calling
force_string.           *  int_array.c (is_integer): Reject cases
where a string value is         present that will not be correct-
ly  regenerated  from  the  integer;          in particular, this
could happen where blank space padding is present,          lead-
ing zeroes are present, or for hex or octal values.          Also
fix some bugs where a strnum was converted to  a  NUMBER  without
        turning  off  the  STRING  bit.           *  io.c  (redi-
rect_string):  Make   lint   warning   message   more   accurate.
        (redirect): Change not_string test to use STRING bit, not
STRCUR.          (pty_vs_pipe): Use fixtype to correct logic  for
detecting  whether  a         value is anumber.          * mpfr.c
(mpg_force_number):  If  NUMCUR  is  set,  there's  no  need   to
        test  is_mpg_number. If it's not, the NODE is corrupt and
we've got         bigger problems. Fix flag  manipulation  logic.
Always     set     NUMCUR     and             clear    MAYBE_NUM,
        (set_PREC):   Fix   logic   using    fixtype    function.
        (do_mpfr_atan2,  do_mpfr_intdiv): Fix lint check for non-
numeric         arguments.           (do_mpfr_func,  do_mpfr_int,
do_mpfr_compl, get_intval, do_mpfr_srand):         Fix lint check
for non-numeric argument.          (do_mpfr_strtonum):  Use  fix-
type   and   stop  testing  for  NUMCUR  bit.           *  node.c
(r_force_number):  Eliminate  pointless  save  and   restore   of
        terminating   NUL  char.  Always  set  NUMCUR  and  clear
MAYBE_NUM, and         convert STRING to NUMBER  if  appropriate,
fixing  bugs in flag         manipulations. For non-decimal data,
need to consider whether there          is  trailing  non-numeric
data  in deciding whether a MAYBE_NUM should         be converted
to a NUMBER, so take advantage of new endptr arg         to  non-
dec2awknum.

2016-06-14         Arnold D. Robbins     <arnold@skeeve.com>

        * builtin.c (do_sub): Fix sub for long runs of backslash-
es.          Thanks to Mike Brennan  for  the  report.
        Unrelated:          * ext.c (get_argument): Remove unused
variable pcount.

2016-06-10         Arnold D. Robbins     <arnold@skeeve.com>

        * config.guess, config.sub: Get latest from  Gnulib  mas-
ter.          * main.c (UPDATE_YEAR): Bump to 2016.

2016-06-09         Arnold D. Robbins     <arnold@skeeve.com>

        * dfa.c: Sync with GNU grep.

        Unrelated:

        *  configure.ac:  Move  AM_CONDITIONAL[ENABLE_EXTENSIONS]
outside         the enclosing if. Thanks to Assaf Gordon  <assaf-
gordon@gmail.com>         for the report.

2016-06-08         Arnold D. Robbins     <arnold@skeeve.com>

        * symbol.c (lookup): If got Node_val, it's a non-variable
        in SYMTAB, return NULL. Can affect watchpoints in the de-
bugger,          maybe other places. Thanks to Hermann Peifer for
the         test case and report.

2016-06-05         Arnold D. Robbins     <arnold@skeeve.com>

        * dfa.c: Sync with GNU grep.

2016-06-01         Arnold D. Robbins     <arnold@skeeve.com>

        * nonposix.h (getpgrp): Wrap declaration in ifdef  so  it
doesn't          mess  things up on POSIX systems (like Solaris).
Thanks to         Nelson Beebe for the report.          *  node.c
(is_hex):  New  function  to check for 0x preceded by         op-
tional sign.          (r_force_number): Use it.  Thanks  to  Mike
Brennan for the report.

2016-05-30          Andrew  J.  Schorr     <aschorr@telemetry-in-
vestments.com>

        * gawkapi.h (awk_ext_func_t): Rename num_expected_args to
        max_expected_args,  and  explain  in  the comment that it
doesn't really         matter.          *  ext.c  (make_builtin):
Replace    num_expected_args    with           max_expected_args.
        (get_argument): Do not check whether the argument  number
exceeds         the maximum expected by the function.

2016-05-30         Arnold D. Robbins     <arnold@skeeve.com>

        *  main.c  (arg_assign): Fully bracket ifdefs around call
        to force_number. Thanks to Andrew Schorr for pointing out
        that  force_number  was called only if LC_NUMERIC was de-
fined.                   Lots of files: Update copyright date.

        * field.c (set_FS): Handle FS = " " if RS = "". Thanks to
        Janis Papanagnou for the report.

        *  getopt.c, getopt.h, getopt1.c, getopt_int.h: Sync with
GLIBC.

2016-05-26         Andrew  J.  Schorr      <aschorr@telemetry-in-
vestments.com>

        *  awk.h  (get_actual_argument): Remove unused "optional"
argument.            (get_scalar_argument,   get_array_argument):
Change  macro  definition  to         remove 3rd "optional" argu-
ment.          * ext.c (get_actual_argument): Remove unused  "op-
tional"   argument.            *   gawkapi.c   (api_get_argument,
api_set_argument):  Remove  unused  final           argument   to
get_array_argument and get_scalar_argument.

2016-05-26         Arnold D. Robbins     <arnold@skeeve.com>

        *  awk.h [fatal]: Make parentheses and use of indirection
        consistent with warning and lintwarn.  Thanks  to  Andrew
Schorr          for  pointing  this  out.           * str_array.c
(str_lookup): Move test for MAYBE_NUM to where         we  dupli-
cate the subscript. Removing it across the board is         wrong
if there are multiple references to the value. Thanks          to
Andrew Schorr for discussion and test case.

2016-05-26          Andrew  J.  Schorr     <aschorr@telemetry-in-
vestments.com>

        * awk.h (get_actual_argument): Add  an  initial  argument
containing          the (NODE *) previously returned by get_argu-
ment. This allows us to         eliminate a call to  get_argument
from  inside  get_actual_argument.          (get_scalar_argument,
get_array_argument): Change macro definition  to          add  an
initial  node  argument  to  pass through to get_actual_argument.
        * ext.c (get_actual_argument): Add initial (NODE *) argu-
ment  to contain         the value previously returned by get_ar-
gument. This allows us to         avoid  repeating  the  call  to
get_argument.  We can also eliminate the         check for a NULL
value, since the caller did that  already.           *  gawkapi.c
(api_get_argument):   Pass  (NODE  *)  returned  by  get_argument
        to    get_array_argument     and     get_scalar_argument.
        (api_set_argument):  Pass  (NODE *) returned by get_argu-
ment to         get_array_argument.

2016-05-25              Manuel      Collado              <mcolla-
do2011@gmail.com>.

        *     gawkapi.c     (api_nonfatal):     New     function.
        (api_impl):  Include  it.           *  gawkapi.h  (struct
gawk_api):  Add  api_nonfatal  member.           (nonfatal):  New
macro.

2016-05-12         Arnold Robbins       <arnold@skeeve.com>

        * str_array.c (str_lookup): Remove  MAYBE_NUM  from  sub-
script  flags.           Bug  reported  by  Andres  Legarra  <An-
dres.Legarra@toulouse.inra.fr>.

        Unrelated:  Fix  issues   with   SIGPIPE.   Reported   by
        Ian Jackson <ijackson@chiark.greenend.org.uk>.

        *  builtin.c  (do_system):  Reset/restore SIGPIPE to/from
default around         call to system.          * io.c (redirect,
gawk_popen [PIPES_SIMULATED]): Same.

2016-05-12  Eli Zaretskii  <eliz@gnu.org>

        * nonposix.h: Add prototypes for POSIX functions emulated
in pc/*         files.

2016-05-09         Andrew  J.  Schorr      <aschorr@telemetry-in-
vestments.com>

        *  interpret.h  (r_interpret): Op_ext_builtin. No need to
test whether         op == Op_ext_builtin, since we  wouldn't  be
here otherwise.

2016-05-03          Andrew  J.  Schorr     <aschorr@telemetry-in-
vestments.com>

        * builtin.c (format_tree): Do not waste a byte at the end
of a string.

2016-05-03          Andrew  J.  Schorr     <aschorr@telemetry-in-
vestments.com>

        * builtin.c (format_tree): After the string has been ren-
dered,  use          realloc  to  shrink the buffer to the needed
size. Otherwise, the minimum         buffer size of 512 bytes can
result  in  lots of wasted memory if many         sprintf results
are stored in an array.

2016-05-02         Andrew  J.  Schorr      <aschorr@telemetry-in-
vestments.com>

        *  gawkapi.h (gawk_api_major_version, gawk_api_minor_ver-
sion): Add         CPP #define values to support conditional com-
pilation.

2016-05-02         Arnold D. Robbins     <arnold@skeeve.com>

        *  dfa.h,  dfa.c:  Sync  with  grep.          * re.c (re-
search): Adjust type of try_backref.

2016-05-02         Arnold D. Robbins     <arnold@skeeve.com>

        * awk.h (success_node): Declare.          * array.c (suc-
cess_node): Define.          * cint_array.c, int_array.c, str_ar-
ray.c: Use `& success_node'         instead of `(NODE **) ! NULL'
to indicate success throughout.          Thanks to Pat Rankin for
the cleanup suggestion.

2016-04-27         Arnold D. Robbins     <arnold@skeeve.com>

        * io.c (set_RS): Use rs1scan if do_traditional,  even  if
length          of  RS  is  > 1.  Bug reported by Glauco Ciullini
        <glauco.ciullini6245@gmail.com>.

2016-04-24         Arnold D. Robbins     <arnold@skeeve.com>

        * dfa.c: Sync with GNU grep.

2016-04-11         Arnold D. Robbins     <arnold@skeeve.com>

        *  regex_internal.c:  Replace   _GL_ATTRIBUTE_PURE   with
        __attribute__.

2016-04-11         Arnold D. Robbins     <arnold@skeeve.com>

        * regexec.c: Stamp out last remaining use of __attribute.
        * regcomp.c: Undo change of 2016-01-24 when parsing  sin-
gle-byte          ranges.  Go  back to treating them as bytes and
not as characters.          The change broke things on Windows in
non-UTF-8 character sets.          * mbsupport.h (mbstate_t): De-
fine to int.          Update copyright.

2016-04-10         John E. Malmberg      <wb8tyw@qsl.net>

        * regex_internal.c: Use _GL_ATTRIBUTE_PURE macro

2016-04-07         Arnold D. Robbins     <arnold@skeeve.com>

        *  awk.h  (two_way_close_type):  Move  here  from   io.c.
        (close_rp):   Add   declaration.            *   builtin.c
(do_printf): Call close_rp before fatal message when          at-
tempting  to  write  the  closed  write  end  of  a two way pipe.
        (do_print):   Ditto.            (do_print_rec):    Ditto.
        *  io.c (do_getline_redir): Same, for reading closed read
end.          (close_rp): Make not static.

2016-04-07  Eli Zaretskii  <eliz@gnu.org>

        * nonposix.h (WEXITSTATUS, WIFEXITED, WIFSIGNALED, WTERM-
SIG)          (WIFSTOPPED, WSTOPSIG) [__MINGW32__]: New macros to
replace the         missing header sys/wait.h.          (w32_sta-
tus_to_termsig): Add prototype.

        *  builtin.c  (do_system) [__MINGW32__]: Compute the exit
status of         'system' differently  under  --traditional,  as
the low 8 bits are         the most interesting.

2016-04-06         Arnold D. Robbins     <arnold@skeeve.com>

        *  builtin.c  (do_printf):  Allow  a  write to the closed
write-end of         a two-way pipe to be nonfatal if NONFATAL is
set  for it.          (do_print): Ditto.          (do_print_rec):
Ditto.          * io.c (do_getline_redir): Same thing for reading
from a closed         read end of a two-way pipe. Fatal error.

2016-04-04         Arnold D. Robbins     <arnold@skeeve.com>

        * builtin.c (do_fflush): Add warning for flush to two-way
        pipe  where  write  end  was  closed.            *   io.c
(flush_io): Add some braces for the for loop.

2016-04-02         Arnold D. Robbins     <arnold@skeeve.com>

        *  builtin.c  (do_printf):  If the redirection is two way
but the         fp is NULL, it means we're writing to the  closed
write-end of         a two-way pipe. Issue a fatal error message.
        (do_print):   Ditto.            (do_print_rec):    Ditto.
        *  io.c (do_getline_redir): Same thing for reading from a
closed          read  end  of  a  two-way  pipe.   Fatal   error.
        * NEWS: Updated.

2016-03-27         Stephen Davies        <sdavies@sdc.com.au>

        *  awkgram.y (get_comment): Strip CRs from comment. Strip
        off trailing newlines.

2016-03-21         Arnold D. Robbins     <arnold@skeeve.com>

        * profile.c (pprint): Improve handling of  comment  after
        and if statement without an else.

2016-03-19         Arnold D. Robbins     <arnold@skeeve.com>

        Considerable  improvements  to  handling of comments when
pretty         printing, particularly for end-of-line comments.

        * awkgram.y (prior_comment, comment_to_save):  New  vari-
ables.               (add_pending_comment):     New     function.
        (grammar): Jump through lots more hoops to  capture  com-
ments.           Due  to shift-reduce parsing, there can be up to
two comments         captured and waiting to be saved; be sure to
get  them both and         at the right times.  This is difficult
since comments have no          real  syntactic  existence.  Call
add_pending_comment  on  most  of          the simple statements.
        (get_comment): Save a pre-existing comment in  prior_com-
ment.           (split_comment):  Use  comment_to_save instead of
`comment'.          * profile.c (end_line): Change to return  the
instruction  after          the comment that gets printed; adjust
return type.          (pprint): Add skip_comment static variable.
Adjust logic for         skipping an end-of-line comment; only do
it if skip_comment is         true. This is set to true in places
where  we  can't  use  the          return value from end_line().
Call end_line() in many more places.           (pp_func):  Handle
end-of-line comments after a function header.

2016-03-17         Arnold D. Robbins     <arnold@skeeve.com>

        *  debug.c  (print_instruction):  For Op_comment, improve
notation as         to whether it's a full comment or an  end  of
line comment.

2016-03-14         Arnold D. Robbins     <arnold@skeeve.com>

        *  io.c  (socketopen):  For  SOCK_DGRAM,  set read_len to
sizeof         remote_addr. Makes UDP more or  less  work  again.
        Thanks to Juergen Kahrs for the fix.

2016-03-11         Arnold D. Robbins     <arnold@skeeve.com>

        * debug.c (print_instruction): Normalize printing of com-
ment dump.

2016-03-10         Arnold D. Robbins     <arnold@skeeve.com>

        * builtin.c (do_system): Further improvements. Catch core
dump         flag.

2016-03-11         Arnold D. Robbins     <arnold@skeeve.com>

        *  builtin.c  (do_system):  Improve return values of sys-
tem().

2016-03-08         Arnold D. Robbins     <arnold@skeeve.com>

        * profile.c (print_instruction): Fix duplicate  case  not
caught         by TinyCC. Grrr.

2016-03-07         Arnold D. Robbins     <arnold@skeeve.com>

        *  profile.c (print_instruction): Further improvements in
        instruction dump, especially  for  when  pretty-printing.
        * builtin.c (do_system): Augment the logic for the return
        value so that death-by-signal info is available too.

2016-03-03         Arnold D. Robbins     <arnold@skeeve.com>

        * profile.c (pp_list): Unconditionally compute  delimlen.
Avoids         compiler warning.

2016-03-02         Arnold D. Robbins     <arnold@skeeve.com>

        *  debug.c  (print_instruction): Improvements in instruc-
tion dump         for if and else.

2016-03-01         Arnold D. Robbins     <arnold@skeeve.com>

        * debug.c (print_instruction): For Op_comment, add  nota-
tion  as         to whether it's a full comment or an end of line
comment.

2016-02-29         Arnold D. Robbins     <arnold@skeeve.com>

        * profile.c (pp_list): Handle the case of nargs equal  to
zero.          Thanks to Hermann Peifer for the report.

2016-02-28         Arnold D. Robbins     <arnold@skeeve.com>

        *  profile.c  (pprint): Fix copy-paste error in else han-
dling.          Thanks to Michal Jaegermann for the report.

2016-02-23         Arnold D. Robbins     <arnold@skeeve.com>

        * config.guess, config.rpath, config.sub: Update to  lat-
est         from GNULIB.

2016-02-23         Arnold D. Robbins     <arnold@skeeve.com>

        * NEWS: Update full list of infrastructure tools.

2016-02-22              gettextize                  <bug-gnu-get-
text@gnu.org>

        * configure.ac (AM_GNU_GETTEXT_VERSION): Bump to 0.19.7.

2016-02-21         Nelson H.F. Beebe     <beebe@math.utah.edu>

        * random.c [SHUFFLE_BITS, SHUFFLE_MAX, SHUFFLE_MASK]: New
macros.          (shuffle_init, shuffle_buffer): New static vari-
ables.          (random_old): Renamed from random.          (ran-
dom):   New   function   wrapping   random_old  and  providing  a
        shuffle buffer to increase the period. See the literature
citations         and other notes in the code.

2016-02-21         Arnold D. Robbins     <arnold@skeeve.com>

        *  regexec.c  (prune_impossible_nodes):  Remove attribute
that         keeps it from compiling with 32  bit  GCC.  Who  the
heck knows         why or how. Sigh. Double sigh.

2016-02-20         Arnold D. Robbins     <arnold@skeeve.com>

        *    regcomp.c,   regex.c,   regex.h,   regex_internal.c,
regex_internal.h,         regexec.c: Sync with GLIBC, mostly pro-
totype changes.

2016-02-18         Arnold D. Robbins     <arnold@skeeve.com>

        Fix profile / pretty-printing to chain else-ifs.

        * profile.c (pprint): Change third argument into a set of
flags         for in the for header or in an else if. Adjust case
Op_K_else  to          make  the right checks and format the code
properly. In Op_K_if         clear the flag so that any following
else gets indented properly.          Adjust all calls.

2016-02-14         Arnold D. Robbins     <arnold@skeeve.com>

        * README, NEWS: Updated to reflect use of Texinfo 6.1.

        Unrelated:

        *  configure.ac:  Switch  to AC_PROG_CC_C99 to enable C99
        compilation and features.          * dfa.c: Sync with GNU
grep, go back to C99 style declarations         at point of use.

2016-02-05         Arnold D. Robbins     <arnold@skeeve.com>

        Make  optimization (constant folding and tail call recur-
sion)         be on by default.

        * awkgram.y (common_exp): Only do  concatenation  of  two
strings(!)            *   main.c  (do_optimize):  Init  to  true.
        (optab): Add new -s/--no-optimize  option.           (us-
age):  Update message to include it.          (parse_args): Parse
it. Set do_optimize to false if pretty         printing  or  pro-
filing.          * NEWS: Updated.

2016-01-28         Arnold D. Robbins     <arnold@skeeve.com>

        *  Makefile.am  (SUBDIRS): Include extras. Otherwise dist
does         doesn't work.

2016-01-27         Arnold D. Robbins     <arnold@skeeve.com>

        *   configure.ac   (GAWK_AC_AIX_TWEAK):   Remove    call.
        *  configure:  Regenerated.           *  io.c (GAWK_AIX):
Check _AIX instead.          * custom.h  (_AIX):  Add  define  of
_XOPEN_SOURCE_EXTENDED.

        Unrelated:

        *  configure.ac: Remove old stuff for ISC Unix, no longer
needed.          * configure: Regenerated.

2016-01-25         John E. Malmberg      <wb8tyw@qsl.net>

        * io.c (redirect): Need to call close_one more than  once
after           running out of file handles.

2016-01-25         Arnold D. Robbins     <arnold@skeeve.com>

        * NEWS: Document VMS support updated.

2016-01-24         Arnold D. Robbins     <arnold@skeeve.com>

        Regex:  treat  [x] as x if x is a unibyte encoding error.
        This change removes an ifdef GAWK.

        * regcomp.c (parse_byte) [ !_LIBC && RE_ENABLE_I18N]: New
function.          (build_range_exp) [ !_LIBC && RE_ENABLE_I18N]:
Use it.          From Paul Eggert  <eggert@cs.ucla.edu>.

2016-01-22         Arnold D. Robbins     <arnold@skeeve.com>

        *  regexec.c  (prune_impossible_nodes):  Remove  all  at-
tributes,  on          both  declaration and definition.  Fixes a
Linux Mint 17  compilation          braino  reported  by  Antonio
Colombo.           *  regex_internal.h (test_malloc): Add cast to
silence a warning         on the same system.           (test_re-
alloc): Ditto.

2016-01-20         Arnold D. Robbins     <arnold@skeeve.com>

        * regex_internal.h [attribute_hidden]: Remove definition.
        * regcomp.c [attribute_hidden]: Remove uses.  Not  needed
since         the variables are static. Thanks to Paul Eggert for
pointing         this out.

2016-01-18         Paul Eggert  <eggert@cs.ucla.edu>

        Diagnose ERE '()|1'          Problem  reported  by  Hanno
Boeck in: http://bugs.gnu.org/21513

        *  lib/regcomp.c  (parse_reg_exp): While parsing alterna-
tives, keep         track of the set of previously-completed sub-
expressions  available          before the first alternative, and
restore this set just before         parsing each subsequent  al-
ternative.  This lets us diagnose the         invalid back-refer-
ence in the ERE '()|1'.

        Unrelated:  General minor cleanups (spelling, code)  from
Gnulib:

        * regex.h, regex_internal.c, regex_internal.h, regexec.c:
Minor         cleanups.

2016-01-14         Arnold D. Robbins     <arnold@skeeve.com>

        * eval.c (r_get_lhs): If original array was Node_var_new,
        assign  value  that  is  dupnode  of Nnull_string and not
        Nnull_string  directly.  Fixes  core  dump  reported   by
        ruyk <Lonely.ruyk@mail.ru>.

        Unrelated:

        * ChangeLog: Cleanup spurious extra whitespace.

2016-01-03         Arnold D. Robbins     <arnold@skeeve.com>

        *   configure.ac   (GAWK_AC_LINUX_ALPHA):   Remove  call.
        * configure: Regenerated.          * NEWS:  Document  re-
moval of support for GNU/Linux on Alpha.

2016-01-02         Arnold D. Robbins     <arnold@skeeve.com>

        *  dfa.c  (add_utf8_anychar): Minor change in declaration
of         utf8_classes to keep Tiny CC happy.  Also  syncs  with
grep.          * dfa.h: Sync with grep (update copyright year).

2015-12-27         Arnold D. Robbins     <arnold@skeeve.com>

        *  awkgram.y  (mk_condition):  Revise to correctly handle
        empty else  part  for  pretty  printing.  Bug  report  by
        ziyunfei <446240525@qq.com>.

2015-12-20         Arnold D. Robbins     <arnold@skeeve.com>

        * io.c (nonfatal): New static constant string.          *
is_non_fatal, is_non_fatal_redirect: Use it.

2015-12-16         Arnold D. Robbins     <arnold@skeeve.com>

        * io.c (two_way_open): Remove unneeded close of slave  in
the         parent.

2015-12-16         Arnold D. Robbins     <arnold@skeeve.com>

        *  profile.c (pp_number): Move count into ifdef for MPFR.
Avoids         an unused variable warning if  not  compiling  for
MPFR.

        Unrelated:

        *  io.c  (two_way_open): If using a pty instead of pipes,
open the         slave in the child. Fixes AIX and  doesn't  seem
to break GNU/Linux.

2015-11-26         Arnold D. Robbins     <arnold@skeeve.com>

        *  command.y  (cmdtab): Add "exit" as synonym for "quit".
        Suggested by  Joep  van  Delft  <joepvandelft@xs4all.nl>.
        * NEWS: Document this.

2015-11-24         Arnold D. Robbins     <arnold@skeeve.com>

        *  debug.c  (debug_pre_execute): Fix to check watchpoints
before         checking breakpoints. Gives more natural  behavior
for  the user.          * NEWS: Document this.          Issue re-
ported by Joep van Delft <joepvandelft@xs4all.nl>.

2015-10-28         Arnold D. Robbins     <arnold@skeeve.com>

        *  awkgram.y   (nextc):   Don't   allow   ' '   even   if
check_for_bad         is false. Fixes a problem reported by Hanno
Boeck <hanno@hboeck.de>.

        Unrelated:

        * dfa.c: Sync with GNU grep.

2015-10-25         Arnold D. Robbins     <arnold@skeeve.com>

        *  awkgram.y  (yylex):  Fix   invalid   write   problems.
        Reported  by Hanno Boeck <hanno@hboeck.de>.          Only
appeared in master. Harumph.

2015-10-16         Arnold D. Robbins     <arnold@skeeve.com>

        *   Makefile.am   (SUBDIRS):   Fix   ordering   so   that
        make  check  directly  after  configure  works  properly.
        Thanks  to   Michal   Jaegermann   <michal.jnn@gmail.com>
        for the report.

        Unrelated:

        * dfa.c: Sync with GNU grep.

2015-10-11         Arnold D. Robbins     <arnold@skeeve.com>

        *   awkgram.y   (yylex):   Fix   invalid  read  problems.
        Reported by Hanno Boeck <hanno@hboeck.de>.

2015-10-04         Arnold D. Robbins     <arnold@skeeve.com>

        * configure.ac: Bump version to 4.1.3a.

2015-09-26         Arnold D. Robbins     <arnold@skeeve.com>

        * awkgram.y (yylex): Diagnose multidimensional arrays for
        traditional/posix  (fatal)  or  lint. Thanks to Ed Morton
        for the bug report.

2015-09-25         Arnold D. Robbins     <arnold@skeeve.com>

        * config.guess, config.sub, config.rpath: Updated.

2015-09-18         Arnold D. Robbins     <arnold@skeeve.com>

        * field.c (fpat_parse_field):  Always  use  rp->non_empty
instead         of only if in_middle. The latter can be true even
if we've         already parsed part of the record. Thanks to  Ed
Morton         for the bug report.

2015-09-11      Daniel Richard G.       <skunk@iSKUNK.ORG>

        *  regcomp.c: Include strings.h, wrapped in ifdef. Revise
        defines for BTOWC.           *  regex_internal.h:  Remove
ZOS_USS bracketing ifdefs.

2015-09-04         Arnold D. Robbins     <arnold@skeeve.com>

        *  profile.c  (pp_num):  Use format_val to print integral
values         as integers. Thanks to Hermann Peifer for the  re-
port.

2015-08-28      Daniel Richard G.       <skunk@iSKUNK.ORG>

        *  Makefile.am, configure.ac: Use an Automake conditional
to         enable/disable the "extensions"  subdirectory  instead
of          producing  a stub Makefile therein from the configure
script.          *  awk.h,  custom.h,  regex_internal.h:  Removed
z/OS-specific  code          that  is no longer needed due to im-
provements   in   Gawk's   general           Autotools   support.
        *  awk.h: Allow <strings.h> to be #included together with
        <string.h> as this is required on  some  systems  (z/OS).
        *  io.c,  configure.ac:  <sys/select.h> is needed for se-
lect()         and related bits on z/OS.          * awk.h: Handle
the  redefinition  of EXIT_FAILURE on z/OS in a         more ele-
gant/general way.          * awkgram.y, command.y,  configure.ac,
eval.c,          helpers/testdfa.c: Define and use the USE_EBCDIC
cpp symbol         instead of checking the value of 'a'  whenever
we want to know         if we're on an EBCDIC system. Also, don't
assume that z/OS         necessarily means EBCDIC, as the compil-
er  does  have  an  ASCII         mode (-qascii).          * awk-
gram.y, command.y, configure.ac: On EBCDIC systems,          con-
vert   singleton   EBCDIC  characters  in  the  input  stream  to
        ASCII on the fly so  that  the  generated  awkgram.c/com-
mand.c  in          the  distributed sources can be used, i.e. we
don't have to         require the user to build Bison and re-gen-
erate  those files         themselves. This implementation uses a
z/OS-specific function         (__etoa_l()) to do the conversion,
but  support for other         systems can be added in the future
as necessary.          * io.c: No need to protect this  block  of
"#if          defined(HAVE_TERMIOS_H)"  code  from z/OS; it works
just fine         there.          * configure.ac: Check  for  the
"struct  passwd.pw_passwd"  and          "struct group.gr_passwd"
fields and conditionalize their use,         as they don't  exist
on z/OS.  Needed for doc/gawktexi.in.

2015-08-25         Arnold D. Robbins     <arnold@skeeve.com>

        *  node.c  (str2wstr): Upon finding an invalid character,
if         using UTF-8, use the replacement character instead  of
skipping          it. Helps match() and other functions work bet-
ter in the face         of unexpected data.  Make the lint  warn-
ing an unconditional         warning.

        Unrelated:

        *  awk.h: Add explanatory comment on the flags related to
        types and values.          *  mpfr.c  (mpg_force_number):
If  setting  NUMBER,  clear  STRING  also          when  clearing
MAYBE_NUM.          (set_PREC): Check STRCUR instead  of  STRING.
        *  node.c  (r_force_number):  If  setting  NUMBER,  clear
STRING also         when clearing MAYBE_NUM.

2015-08-15         Arnold D. Robbins     <arnold@skeeve.com>

        * dfa.c (dfamust): Restore  c90  compat  by  moving  some
        variable declarations to the top of the routine.

2015-08-12         Arnold D. Robbins     <arnold@skeeve.com>

        * dfa.c: Sync with GNU grep. Yet again, again.

2015-08-02         Arnold D. Robbins     <arnold@skeeve.com>

        * dfa.c: Sync with GNU grep. Yet again.

2015-07-21         Arnold D. Robbins     <arnold@skeeve.com>

        * dfa.c: Sync with GNU grep.

2015-07-18         Arnold D. Robbins     <arnold@skeeve.com>

        * dfa.c: Sync with GNU grep.

2015-07-08         Arnold D. Robbins     <arnold@skeeve.com>

        * dfa.h, dfa.c: Sync with GNU grep.

2015-06-29         Arnold D. Robbins     <arnold@skeeve.com>

        *  awkgram.y (yylex): If gawk extension function is found
as         a function in a user-defined function body,  treat  it
normally.           Makes  eval "print and(a, 1)" work in the de-
bugger again.          Thanks,  yet  again,  to  Hermann  Peifer.
        *  interpret.h  (r_interpret): Op_subscript. UPREF if the
        element value is  a  typed  regexp.   Thanks  to  Hermann
Peifer.

2015-06-28         Arnold D. Robbins     <arnold@skeeve.com>

        Improve memory tracking of typed regexps.

        *  awkgram.y  (make_regnode): Set valref to 1.          *
interpret.h (r_interpret): Have Op_push_re  upref  typed  regexp.
        *   builtin.c  (do_typeof):  OK  to  deref  typed  regex.
        * awk.h (force_string): Do dupnode on the regexp text.

2015-06-26         Arnold D. Robbins     <arnold@skeeve.com>

        Remove support for old-style extensions.

        * awk.h  (Node_old_ext_func,  Op_old_ext_func):  Removed.
        Remove      all     uses     throughout     the     code.
        (load_old_ext,  make_old_builtin):  Remove  declarations.
        *   ext.c   (load_old_ext,   make_old_builtin):  Removed.
        *  awkgram.y  (tokentab):   Remove   "extension"   entry.
        *  eval.c  (Node_old_ext_funci,  Op_old_ext_func): Remove
from tables.          * interpret.h (interpret): Remove stuff for
old extensions.

        Unrelated:

        *  builtin.c (do_typeof): Add support for strnum, distin-
guish         untyped from unassigned, use "string" and "number".
Thanks to         Hermann Peifer for suggesting inclusion of str-
num.

2015-06-25         Arnold D. Robbins     <arnold@skeeve.com>

        Further work  straightening  out  memory  management  for
typeof.

        *  awk.h  (DEREF):  Add  an  assert.          * builtin.c
(do_typeof): Add comments, cases where not to  deref.           *
debug.c  (print_instruction): Add Op_push_arg_untyped.          *
interpret.h  (r_interpret):  Additional  comments  /  tweaks  for
        Op_push_arg_untyped.

        Unrelated. Make `x = @/foo/ ; print x' print something.

        *  builtin.c  (do_print):  Check  for Node_typedregex and
handle it.          Needed for adding test code.

        Unrelated. Typo fix.

        *  debug.c  (initialize_watch_item):  Dupnode  the  right
thing.

2015-06-22         Arnold D. Robbins     <arnold@skeeve.com>

        *  awkgram.y  (snode): Make isarray not scalarize untyped
parameters          also.           *  profile.c  (pprint):   Add
Op_push_arg_untyped.

        Improve    debugger    support    for    typed   regexps.
        Thanks to Hermann Peifer for the bug report.

        * awkgram.y (valinfo): Add support  for  Node_typedregex.
        * debug.c (watchpoint_triggered): Handle Node_typedregex.
        (initialize_watch_item): Ditto.           (print_memory):
Ditto.

        Fix  typeof  to work on subarrays.  Thanks, yet again, to
        Hermann Peifer for the bug report.

        * builtin.c (do_typeof): Don't deref Node_var_array.

2015-06-21         Arnold D. Robbins     <arnold@skeeve.com>

        Fixes for typeof - Don't let  typeof  change  an  untyped
variable         into a scalar.

        *  awk.h (opcodeval): Add Op_push_arg_untyped.          *
awkgram.y  (snode):  Separate  out  case   for   do_typeof,   use
        Op_push_arg_untyped.           *  builtin.c  (do_typeof):
Arg will  be  equal  to  Nnull_string          if  it's  untyped.
        *  eval.c  (optypes): Add Op_push_arg_untyped.          *
interpret.h (r_interpret): Add Op_push_arg_untyped handling.

2015-06-19         Arnold D. Robbins     <arnold@skeeve.com>

        * builtin.c (do_isarray): Minor  edit  to  lint  warning.
        * TODO: Updated.

2015-06-14         Arnold D. Robbins     <arnold@skeeve.com>

        *   regcomp.c,  regex_internal.h,  regexec.c:  Sync  with
GLIBC.

        Unrelated:

        * regex_internal.c, regexec.c: __attribute  -->  __attri-
bute__.

        Related:

        *  regex_internal.h: Clean up defines for non-GCC for at-
tribute;         essentially sync it with GLIBC.

2015-06-12         Arnold D. Robbins     <arnold@skeeve.com>

        * awkgram.y: Finish converting "hard"  regex  to  "typed"
regex.

2015-05-31         Arnold D. Robbins     <arnold@skeeve.com>

        *   field.c  (posix_def_parse_field):  Removed.  It's  no
longer         needed after updates to the POSIX standard. Thanks
to         Michael Klement <michael.klement@usa.net> for pointing
this out.

2015-05-26  Paul Eggert  <eggert@Penguin.CS.UCLA.EDU>

        *  floatcomp.c  (count_trailing_zeros):   New   function.
        This  compiles  to  a  single  TZCNT  instruction  on the
x86-64.          (adjust_uint): Use it to  keep  more  high-order
bits  when          some of the lowest-order bits are zero.  This
implements         the documented behavior: "If the result cannot
be  represented          exactly as a C 'double', leading nonzero
bits are removed one by         one until it can  be  represented
exactly."

2015-05-26         Arnold D. Robbins     <arnold@skeeve.com>

        *  regcomp.c: Fix offsets so error messages come out cor-
rect         once again.

2015-05-19         Arnold D. Robbins     <arnold@skeeve.com>

        * 4.1.3: Release tar ball made.

2015-05-15         Andrew  J.  Schorr      <aschorr@telemetry-in-
vestments.com>

        *  symbol.c  (load_symbols):  Plug  minor  memory leak by
calling unref(tmp)          on  "identifiers"  string  after  as-
soc_lookup is done with it.

2015-05-15          Andrew  J.  Schorr     <aschorr@telemetry-in-
vestments.com>

        * main.c (load_procinfo_argv): New function to save  argv
array      values             in     PROCINFO["argv"][0..argc-1].
        (load_procinfo): Call load_procinfo_argv.

2015-05-11         Arnold D. Robbins     <arnold@skeeve.com>

        * awk.h, awkgram.y, builtin.c,  eval.c  profile.c,  re.c:
        Change Node_hardregex to Node_typedregex everywhere.

2015-05-05         Arnold D. Robbins     <arnold@skeeve.com>

        *  awkgram.y (yylex): Yet Another Fix for parsing bracket
        expressions. Thanks yet again  to  Andrew  Schorr.  Maybe
it's         even finally nailed down now.

        Unrelated:

        * config.guess, config.sub: Get latest versions.

        Make profiling for hard regexes work.

        *   profile.c   (pp_string_or_hard_regex):  Renamed  from
pp_string.          Add bool param for hard regex and  add  @  if
so.               (pp_string):      New      function,      calls
pp_string_or_hard_regex.          (pp_hard_regex): New  function,
calls pp_string_or_hard_regex.          (pprint): Adjust to print
a hard regex correctly.

2015-05-01         Arnold D. Robbins     <arnold@skeeve.com>

        * awkgram.y: Make sure values are not null in param list.
        Avoids  core dump for `function f(func, a) {}'. Thanks to
        Tibor Palinkas <libmawk@igor2.repo.hu>.

2015-04-30         Arnold D. Robbins     <arnold@skeeve.com>

        * Makefile.am: Take --program-prefix  into  account  when
        installing/uninstalling  the  symlinks, especially 'awk'.
        Thanks  to  Steffen  Nurpmeso  <sdaoden@yandex.com>   for
        the report.

        Unrelated:

        *  awkgram.y (yylex): Yet Another Fix for parsing bracket
        expressions. Thanks again to Andrew Schorr.

2015-04-29         Arnold D. Robbins     <arnold@skeeve.com>

        * 4.1.2: Release tar ball made.

2015-04-28         Arnold D. Robbins     <arnold@skeeve.com>

        * builtin.c (isarray): Add lint  warning  that  isarray()
        is deprecated.

2015-04-28         Arnold D. Robbins     <arnold@skeeve.com>

        * awkgram.y (yylex): Rework the bracket handling from ze-
ro.          Thanks to Michal Jaegermann  for  yet  another  test
case.

        Unrelated:

        *  eval.c  (setup_frame):  Restore  call-by-value for $0.
This was         necessitated by the changes  on  2014-11-11  for
conserving          memory  use.  Thanks to Andrew Schorr for the
report and isolating         the cause of the problem.

2015-04-27         Arnold D. Robbins     <arnold@skeeve.com>

        * awkgram.y (yylex): Make change of  Jan  7  for  parsing
regexps         work better. Thanks to Nelson Beebe.

2015-04-26         Arnold D. Robbins     <arnold@skeeve.com>

        * dfa.c: Sync with grep.

2015-04-16         Arnold D. Robbins     <arnold@skeeve.com>

        *  builtin.c (do_strftime): For bad time_t values, return
"".

2015-04-16         Andrew  J.  Schorr      <aschorr@telemetry-in-
vestments.com>

        *  node.c  (r_force_number):  If  strtod sets errno, then
force the         numeric value in node->numbr to zero. For  sub-
normal  values, strtod         sets errno but does not return ze-
ro, and we don't want to retain         those subnormal values.

2015-04-16         Arnold D. Robbins     <arnold@skeeve.com>

        Let parameter names shadow the names of  gawk  additional
built-ins.          Make it actually work.

        *  awkgram.y  (want_param_names):  Now an enum, there are
three   states.            (grammar):   Set   states    properly.
        (yylex): Improve checking logic.

2015-04-16         Arnold D. Robbins     <arnold@skeeve.com>

        * configure.ac: Updated by autoupdate.          * config-
ure, aclocal.m4: Regenerated.          * io.c, main.c, profile.c:
Removed use of RETSIGTYPE.

2015-04-16         Arnold D. Robbins     <arnold@skeeve.com>

        * builtin.c (do_strftime): Use a double for the timestamp
and         check that the value is within range for a time_t.

        Unrelated:

        * regex_internal.h (test_malloc, test_realloc):  Use  %lu
in  printf          format  for  error messages. Thanks to Michal
Jaegermann for         pointing this out.

        Unrelated:

        * NEWS: Updated.

2015-04-15         Arnold D. Robbins     <arnold@skeeve.com>

        Let parameter names shadow the names of  gawk  additional
built-ins.

        *    awkgram.y    (want_param_names):    New    variable.
        (yylex): Check it  before  returning  a  built-in  token.
        (grammar): Set and clear it in the right places.

2015-04-14         Arnold D. Robbins     <arnold@skeeve.com>

        *  builtin.c (do_strftime): Restore checking for negative
result and         add check that time_t is > 0 ---  means  we're
assigning  a negative value         to an unsigned time_t. Thanks
again   to   Glaudiston   Gomes   da   Silva            <glaudis-
tong@gmail.com>.

        If  localtime()  or  gmtime()  return NULL, return a null
string.          Thanks to Andrew Schorr.

        Unrelated:         * builtin.c (call_sub): Fix for  indi-
rect gensub, 3 args now works.

        Unrelated:

        *  builtin.c  (do_sub):  Improve  some variable names for
readability         and add / expand some comments.

        Unrelated:

        * builtin.c (call_sub, call_match, call_split_func):  Al-
low for         regex to be Node_hardregex.

2015-04-14          Andrew  J. Schorr      <aschorr@telemetry-in-
vestments.com>                          Arnold     D.     Robbins
<arnold@skeeve.com>

        *  builtin.c (do_sub): Make computations smarter; initial
len         to malloc, test for final amount  after  all  matches
done  and          need to copy in the final part of the original
string.

2015-04-13         Arnold D. Robbins     <arnold@skeeve.com>

        *  regcomp.c  (analyze):  Prevent  malloc(0).           *
regex_internal.h   (test_malloc,   test_realloc):  New  functions
        that check for zero count.          (re_malloc,  re_real-
loc):  Adjust  to  call  the  new  functions for gawk.          *
regexec.c (build_trtable, match_ctx_clean):  Replace  malloc/free
        with re_malloc/re_free.

        Unrelated:

        *  builtin.c  (do_strftime):  Disable  checking timestamp
value for less         than zero. Allows times before  the  epoch
to  work  with  strftime.           Thanks to Glaudiston Gomes da
Silva <glaudistong@gmail.com>         for raising the issue.

2015-04-12         Arnold D. Robbins     <arnold@skeeve.com>

        *   Makefile.am   (efence):   Make   this   link   again.
        Thanks to Michal Jaegermann for pointing out the problem.

2015-04-09          Andrew  J.  Schorr     <aschorr@telemetry-in-
vestments.com>

        * awkgram.y (yyerror): Rationalize buffer  size  computa-
tions.  Remove          old  valgrind workarounds.          * de-
bug.c   (gprintf):   Rationalize   buffer   size    computations.
        (serialize_subscript):  Ditto.           * io.c (iop_fin-
ish): Rationalize buffer size computations.          *  profile.c
(pp_string): Correct space allocation computation.

2015-04-08        John E. Malmberg       <wb8tyw@qsl.net>

        *  custom.h:  VMS  shares some code paths with ZOS_USS in
        building gawkfts extension.

2015-04-08         Arnold D. Robbins     <arnold@skeeve.com>

        Factor  out  opening  of  /dev/XXX  files   from   /inet.
        Enable  interpretation of special filenames for profiling
output.

        * awk.h  (devopen_simple):  Add  declaration.           *
io.c  (devopen_simple): New routine.          (devopen): Call de-
vopen_simple     as     appropriate.              *     profile.c
(set_prof_file): Call devopen_simple as appropriate,         some
additional logic to handle fd to fp conversion.

        Unrelated:

        * main.c (usage): Add a comment for translators.

2015-04-08  Eli Zaretskii  <eliz@gnu.org>

        * profile.c (set_prof_file): Interpret a file name of "-"
to mean         standard output.

2015-04-06         Arnold D. Robbins     <arnold@skeeve.com>

        * awk.h (force_number): Add `!= 0' check to bitwise oper-
ation.             *    awkgram.y:     Same,     many     places.
        (check_special):  Simplify  code  for  checking extension
flags.

2015-04-05         Arnold D. Robbins     <arnold@skeeve.com>

        *  awkgram.y  (install_builtins):  If  do_traditional  is
true,  do not         install gawk extensions flagged with GAWKX.
Similarly, if do_posix         is true, do not install  functions
flagged with NOT_POSIX.          This fixes a problem with spuri-
ous lint complaints about  shadowing          a  global  variable
that  is  not valid in traditional or posix mode.          Thanks
to  Andrew  Schorr  for  finding  the   problem   and   supplying
        initial code; I did it slightly differently.

2015-04-03         Arnold D. Robbins     <arnold@skeeve.com>

        * awk.h (force_string): If hard_regex, return string text
of   the   regex.            (force_string,   force_number):   If
hard_regex,  return Nnull_string.          * awkgram.y: Fix ~ and
!~ with @/.../.          * eval.c (setup_frame):  Handle  a  hard
regex.          * re.c (avoid_dfa): Ditto.

2015-04-02          Andrew  J.  Schorr     <aschorr@telemetry-in-
vestments.com>

        * NEWS: Rename div to intdiv.

2015-04-02         Arnold D. Robbins     <arnold@skeeve.com>

        Rename div() to intdiv().

        * builtin.c (do_intdiv): Renamed from do_div.           *
mfpr.c  (do_mpfr_intdiv):  Renamed  from  do_mpfr_div.          *
awk.h:  Update  declarations.           *  awkgram.y   (tokentab,
snode): Revise accordingly.

2015-03-31         Arnold D. Robbins     <arnold@skeeve.com>

        *   awk.h   (call_sub):   Renamed   from   call_sub_func.
        (call_match,   call_split_func):   Declare.             *
builtin.c     (call_sub):     Renamed     from     call_sub_func.
        (call_match, call_split_func): New functions.           *
interpret.h  (r_interpret):  Call  new  functions as appropriate.
        * node.c (r_unref): Revert change to  handle  Node_regex,
not needed.

2015-03-31         Arnold D. Robbins     <arnold@skeeve.com>

        *  awk.h  (r_get_field):  Declare.           *  builtin.c
(call_sub_func): Rearrange  the  stack  to  be  what          the
buitin  function  expects.           * eval.c (r_get_field): Make
extern.

2015-03-27         Arnold D. Robbins     <arnold@skeeve.com>

        * io.c (redirect): Change not_string from  int  to  bool.
        * gawkapi.c (api_get_file): Minor stylistic improvements.
        * NEWS: Updated for retryable I/O and new API function.

2015-03-24         Arnold D. Robbins     <arnold@skeeve.com>

        * awkgram.y (make_regnode): Make extern.          * awk.h
(make_regnode):  Declare.           *  builtin.c (call_sub_func):
Start on reworking the stack to         be what do_sub() expects.
Still  needs  work.           *  interpret.h (r_interpret): Add a
cast in comparison with do_sub().           *  node.c  (r_unref):
Handle Node_regex nodes.

2015-03-24          Andrew  J.  Schorr     <aschorr@telemetry-in-
vestments.com>

        * interpret.h (r_interpret): When Op_K_exit has an  argu-
ment  of          Nnull_string,  do not update exit_val, since no
value was supplied.

2015-03-24         Arnold D. Robbins     <arnold@skeeve.com>

        * awk.h, gawkapi.c, io.c: Minor code reformatting.

2015-03-20         Arnold D. Robbins     <arnold@skeeve.com>

        Start on fixing indirect calls of builtins.

        * awk.h (call_sub_func): Add declaration.          * awk-
gram.y    (lookup_builtin):   Handle   length,   sub   functions.
        (install_builtin):  Handle  length  function.           *
builtin.c  (call_sub_func):  New function.          * interpret.h
(r_interpret):    If    calling    do_sub,    do    it    through
        call_sub_func().

2015-03-19         Arnold D. Robbins     <arnold@skeeve.com>

        * re.c (re_update): Handle hard regex - for sub/gsub/gen-
sub.          * awkgram.y (grammar): Add support  for  hard_regex
with  ~  and  !~;          allowed  only  on the right hand side.
        (mk_rexp): Handle a hard regex.

2015-03-18         Arnold D. Robbins     <arnold@skeeve.com>

        * builtin.c (do_typeof): Be smarter  about  checking  for
uninitialized         values; can now detect and return "untyped"
for such values.          * awkgram.y (yylex): Collect @/.../ en-
tirely   in   the   lexer   and  return          a  new  terminal
(HARD_REGEX).          (regexp): Reverted to just a  regular  awk
regexp  constant.          (hard_regexp): New nonterminal, can be
used only in direct         assignment  and  as  an  argument  in
function  call. New set of nonterminals         for function call
expression lists.  More work still to do.

2015-03-18         Arnold D. Robbins     <arnold@skeeve.com>

        * config.guess, config.sub: Updated, from libtool 2.4.6.

2015-03-17         Arnold D. Robbins     <arnold@skeeve.com>

        * profile.c (pp_number): Allocate enough  room  to  print
the  number          in  all  cases. Was a problem mixing -M with
profiling with a really         big  number.  Thanks  to  Hermann
Peifer for the bug report.

2015-03-08         Arnold D. Robbins     <arnold@skeeve.com>

        * re.c (regexflags2str): Removed. It was redundant.

        *  io.c (devopen): Change the logic such that if nonfatal
is true         for the socket, don't do retries.  Also clean  up
the  formatting          some.   At strictopen, check if errno is
ENOENT and if so, propagate         the error from  getaddrinfo()
up to the caller. Add explanatory         comments.

2015-02-28          Andrew  J.  Schorr     <aschorr@telemetry-in-
vestments.com>

        * io.c  (pty_vs_pipe):  Remove  check  for  NULL  PROCIN-
FO_node, since         this is now checked inside in_PROCINFO.

2015-02-27          Andrew  J.  Schorr     <aschorr@telemetry-in-
vestments.com>

        * io.c (socketopen): New parameter hard_error; set it  if
        getaddrinfo()   fails.   Change   fatals   to   warnings.
        (devopen): Pass in address of boolean hard_error variable
        and  stop  trying to open the file if hard_error is true.
        Save and restore errno around call  to  socketopen()  and
        use restored errno if open() fails at strictopen.

2015-02-27         Arnold D. Robbins     <arnold@skeeve.com>

        *  symbol.c  (check_param_names):  Fix  argument order in
memset() call.          * configure.ac:  Use  AC_SEARCH_LIBS  in-
stead of AC_CHECK_LIB. This fixes         a long-standing problem
where `-lm' was used twice in the final         compilation line.

2015-02-27         Arnold D. Robbins     <arnold@skeeve.com>

        Start on making regexp a real type.

        *    awk.h    (Node_hardregex):    New     node     type.
        (do_typeof):  Add declaration.          * awkgram.y: Make
@/.../ a hard regex.          (tokentab): New entry for  typeof()
function.             (snode):    Try    to    handle   typeof().
        (make_regnode):   Handle    Node_hardregex.             *
builtin.c  (do_typeof):  New  function.           * eval.c (node-
types): Add Node_hardregex.          *  re.c  (re_update):  Check
for hardregex too in assert.

2015-02-24         Arnold D. Robbins     <arnold@skeeve.com>

        *  POSIX.STD:afUtpedrate\copylriingeht yceoanrt.inuation   *evaewrkygwrhaemr.ey.
(yylex):  Allow
        Thanks  to  Scott Rush <scott.rush@honeywell.com> for the
report.

2015-02-13         Arnold D. Robbins     <arnold@skeeve.com>

        * awkgram.y (yylex): Be more careful about  passing  true
to         nextc() when collecting a regexp.  Some systems' iscn-
trl()         are not as forgiving  as  GLIBC's.  E.g.,  Solaris.
        Thanks  to  Dagobert Michelsen <dam@baltic-online.de> for
        the bug report and access to systems to check the fix.

2015-02-12         Arnold D. Robbins     <arnold@skeeve.com>

        * POSIX.STD: Update with info about function  parameters.
        * configure.ac: Remove test for / use of dbug library.

2015-02-11         Arnold D. Robbins     <arnold@skeeve.com>

        * gawkapi.h: Fix spelling error in comment.

2015-02-10         Arnold D. Robbins     <arnold@skeeve.com>

        *  profile.c  (pprint):  Restore  printing  of  count for
rules.          Bug report by Hermann Peifer.

2015-02-08         Arnold D. Robbins     <arnold@skeeve.com>

        * io.c: Make it "NONFATAL" everywhere.

2015-02-08         Andrew  J.  Schorr      <aschorr@telemetry-in-
vestments.com>

        *  awk.h  (RED_NON_FATAL):  Removed.          (redirect):
Add  new  failure_fatal  parameter.           (is_non_fatal_redi-
rect):  Add  declaration.           * builtin.c (efwrite): Rework
check for non-fatal.          (do_printf): Adjust calls to  redi-
rect.           (do_print_rec): Ditto. Move check for redirection
error up.          * io.c (redflags2str):  Remove  RED_NON_FATAL.
        (redirect): Add new failure_fatal parameter. Simplify the
code.              (is_non_fatal_redirect):     New     function.
        (do_getline_redir): Adjust calls to redirect.

2014-12-27         Arnold D. Robbins     <arnold@skeeve.com>

        *   awk.h   (is_non_fatal_std):   Declare  new  function.
        *  io.c  (is_non_fatal_std):  New  function.            *
builtin.c (efwrite): Call it.

2015-02-07         Arnold D. Robbins     <arnold@skeeve.com>

        *    regcomp.c,   regex.c,   regex.h,   regex_internal.c,
regex_internal.h,          regexec.c:  Sync  with  GLIBC.  Mostly
copyright date updates.

2015-02-05          Andrew  J.  Schorr     <aschorr@telemetry-in-
vestments.com>

        * eval.c (set_IGNORECASE): If IGNORECASE  has  a  numeric
value,  try          using  that  before treating it as a string.
This fixes a problem         where setting -v IGNORECASE=0 on the
command line was not working         properly.

2015-02-01         Arnold D. Robbins     <arnold@skeeve.com>

        Move  POSIX  requirement  for disallowing parameter names
with the         same name as a function into --posix.

        * NEWS: Document  it.           *  awkgram.y  (parse_pro-
gram): Check do_posix before calling         check_param_names().
        * symbol.c (check_param_names): Set up a  fake  node  and
call          in_array()  for function parameter names instead of
linear         searching the function list a second time.  Thanks
to Andrew         Schorr for the motivation.

2015-01-30         Arnold D. Robbins     <arnold@skeeve.com>

        Don't  allow  function  parameter names to be the same as
function         names - required by POSIX. Bug first reported in
comp.lang.awk.

        In addition, don't allow use of a parameter as a function
name         in a call (but it's ok in indirect calls).

        * NEWS: Updated.           *  awk.h  (check_param_names):
Add  declaration.           *  awkgram.y (at_seen): New variable.
Communicates   between           yylex()    and    the    parser.
        (FUNC_CALL  production): Check at_seen and check that the
identifier         is a function name.           (parse_program):
Call  check_param_names() and set errcount.          (yylex): Set
at_seen   after   seeing   an   at-sign.            *    symbol.c
(check_param_names): New function.

2015-01-24         Arnold D. Robbins     <arnold@skeeve.com>

        Infrastructure updates.

        Bison 3.0.4. Automake 1.15. Gettext 0.19.4.

2015-01-20         Arnold D. Robbins     <arnold@skeeve.com>

        *  gawkapi.c (api_set_array_element): Remove useless call
to         make_aname.          * symbol.c (load_symbols): Ditto.
        Thanks to Andrew Schorr for pointing out the problem.

2015-01-19         Arnold D. Robbins     <arnold@skeeve.com>

        * awkgram.c: Update to bison 3.0.3.          * command.c:
Ditto.          * NEWS: Note same.

2015-01-16         Stephen Davies        <sdavies@sdc.com.au>

        * awkgram.y (rule): Set first_rule to false. Catches more
cases          for  gathering  comments. Thanks to Hermann Peifer
for the test case.

2015-01-15         Arnold D. Robbins     <arnold@skeeve.com>

        * dfa.h, dfa.c: Sync with grep. Mainly copyright updates.
        *  getopt.c,  getopt.h, getopt1.c getopt_int.h: Sync with
GLIBC.          Mainly copyright updates, one minor code fix.

2015-01-14         Arnold D. Robbins     <arnold@skeeve.com>

        Remove deferred variables.

        * awk.h (register_deferred_variable): Remove declaration.
        *   awkgram.y   (is_deferred_variable,  process_deferred,
        symtab_used,     extensions_used,     deferred_variables,
        process_deferred): Remove declarations, bodies, and uses.
        *  builtin.c  (do_length):  Update  comment.            *
main.c  (init_vars):  Just  call  load_procinfo() and `load_envi-
ron()'.

2015-01-08         Andrew  J.  Schorr      <aschorr@telemetry-in-
vestments.com>

        Revert changes to API deferred variable creation -- these
variables         should be created when lookup  is  called,  not
when update is called.          * awk.h (variable_create): Remove
function declaration.          * awkgram.y (variable_create): Re-
move function.          (variable): Restore variable_create func-
tionality inline.          * gawkapi.c  (api_sym_update):  Revert
to  using  install_symbol,  since  the          deferred variable
check should be done when lookup is called, not here.

2015-01-07         Andrew  J.  Schorr      <aschorr@telemetry-in-
vestments.com>

        * gawkapi.c (api_set_array_element): Remove stray call to
        make_aname.  I  cannot  see  what  purpose  this  served.
Maybe I am         missing something.

2015-01-07         Arnold D. Robbins     <arnold@skeeve.com>

        *   configure.ac:   Update  debug  flags  if  developing.
        * awkgram.y (yylex): Regex parsing bug  fix  for  bracket
expressions.           Thanks  to  Mike  Brennan  for the report.
        * builtin.c (format_tree): Catch non-use  of  count$  for
dynamic         field width or precision.

        Unrelated:

        Load  deferred  variables  if  extensions  are used; they
might         want to access PROCINFO and/or ENVIRON.  Thanks  to
Andrew Schorr         for pointing out the issue.

        *  awkgram.y  (extensions_used):  New variable. Set it on
@load.             (do_add_scrfile):    Set     it     on     -l.
        (process_deferred): Check it also.

2015-01-06          Andrew  J.  Schorr     <aschorr@telemetry-in-
vestments.com>

        * gawkapi.c (api_sym_update): If copying a subarray, must
update          the  parent_array pointer.  Also, call the astore
hook if non-NULL.          (api_set_array_element): Call the  as-
tore hook if non-NULL.

2015-01-06          Andrew  J.  Schorr     <aschorr@telemetry-in-
vestments.com>

        * awk.h (variable_create): Now takes a  3rd  argument  to
tell   caller           whether  this  is  a  deferred  variable.
        *  awkgram.y  (variable_create):  Return   indicator   of
whether  this is         a deferred variable in a newly added 3rd
arg.           (variable):  Pass  3rd  arg  to   variable_create.
        *  gawkapi.c  (api_sym_update):  If we triggered the cre-
ation of a deferred         variable, we must  merge  the  exten-
sion's  array  elements  into the deferred         array, not the
other way around.  The ENVIRON array has special funcs         to
call setenv and unsetenv.

2015-01-06          Andrew  J.  Schorr     <aschorr@telemetry-in-
vestments.com>

        *  awk.h   (variable_create):   Declare   new   function.
        *  awkgram.y  (variable_create): New function to create a
variable         taking the deferred variable list into consider-
ation.           (variable): Call new function variable_create if
the  variable  is           not   found.            *   gawkapi.c
(api_sym_update): If an array is being created, then         call
new function variable_create instead of install_symbol.  If  this
        is  the  first reference to a deferred variable, than the
new array         may contain elements that must be  merged  into
the array provided by         the extension.

2015-01-05          Andrew  J.  Schorr     <aschorr@telemetry-in-
vestments.com>

        * io.c (wait_any): If the `interesting' argument is  non-
zero,  then  we          must not return until that child process
has exited, since the caller         gawk_pclose depends  on  our
returning  its exit status.  So in that case,         do not pass
WNOHANG to waitpid.

2015-01-04         Andrew  J.  Schorr      <aschorr@telemetry-in-
vestments.com>

        * gawkapi.h: Fix another comment typo.

2015-01-04          Andrew  J.  Schorr     <aschorr@telemetry-in-
vestments.com>

        * gawkapi.h: Fix typo in comment.

2015-01-02         Andrew  J.  Schorr      <aschorr@telemetry-in-
vestments.com>

        * gawkapi.h (gawk_api): Modify api_get_file to remove the
typelen         argument.          (get_file): Remove typelen ar-
gument  from  the macro.          * gawkapi.c (api_get_file): Re-
move typelen argument.

2014-12-24         Arnold D. Robbins     <arnold@skeeve.com>

        * profile.c (pprint): Be sure to set  ip2  in  all  paths
        through the code. Thanks to GCC 4.9 for the warning.

2014-12-18         Arnold D. Robbins     <arnold@skeeve.com>

        * builtin.c (do_sub): Do not waste a byte at the end of a
string.

2014-12-14         Arnold D. Robbins     <arnold@skeeve.com>

        * awkgram.y (yyerror): Do not waste a byte at the end  of
a string.          * builtin.c (do_match): Ditto.          * com-
mand.y (append_statement): Ditto.           *  debug.c  (gprintf,
serialize):  Ditto.           * field.c (set_FIELDWIDTHS): Ditto.
        * io.c.c (grow_iop_buffer): Ditto.           *  profile.c
(pp_string, pp_group3): Ditto.

2014-12-14          Andrew  J.  Schorr     <aschorr@telemetry-in-
vestments.com>

        * array.c (concat_exp): Do not waste a byte at the end of
a  string.           *  awkgram.y (common_exp): Ditto.          *
builtin.c (do_substr): Ditto.          * eval.c (set_OFS): Ditto.
        *  field.c  (rebuild_record): Ditto.          * gawkapi.h
(r_make_string):  Ditto.           *  interpret.h  (r_interpret):
Ditto  for  Op_assign_concat.           *  node.c  (r_format_val,
r_dupnode,  make_str_node,  str2wstr,  wstr2str):          Ditto.
        * re.c (make_regexp): Ditto.

2014-12-20         Arnold D. Robbins     <arnold@skeeve.com>

        Enable  non-fatal  output  on  per-file  or global basis,
        via PROCINFO.

        * awk.h (RED_NON_FATAL): New redirection flag.          *
builtin.c (efwrite): If RED_NON_FATAL set, just set ERRNO and re-
turn.          (do_printf): Check errflg and if  set,  set  ERRNO
and  return.          (do_print): Ditto.          (do_print_rec):
Ditto.            *   io.c    (redflags2str):    Update    table.
        (redirect):  Check for global PROCINFO["nonfatal"] or for
        PROCINFO[file, "nonfatal"] and don't fail on open if set.
        Add  RED_NON_FATAL to flags.          (in_PROCINFO): Make
smarter and more general.

2014-12-12        Stephen Davies         <sdavies@sdc.com.au>

        Improve comment handling in pretty printing.

        *  awk.h  (comment_type):  New   field   in   the   node.
        (EOL_COMMENT, FULL_COMMENT): New defines.          * awk-
gram.y (block_comment): New  variable.           (check_comment):
New  function.          (grammar): Add code to handle comments as
needed.          (get_comment): Now takes a flag indicating  kind
of  comment.           (yylex):  Collect  comments appropriately.
        (append_rule):  Ditto.           *  profile.c   (pprint):
Smarten up comment handling.          Have printing take comments
into     account.              (end_line):     New      function.
        (pp_func): Better handling of function comments.

2014-12-10         Arnold D. Robbins     <arnold@skeeve.com>

        * dfa.c: Sync with GNU grep.

2014-11-26         Arnold D. Robbins     <arnold@skeeve.com>

        * builtin.c (do_sub): Improve wording of gensub warnings.

2014-11-25         Arnold D. Robbins     <arnold@skeeve.com>

        *  builtin.c  (do_sub): For gensub, add more warnings for
invalid         third argument.

2014-11-23         Arnold D. Robbins     <arnold@skeeve.com>

        * awk.h: Move all inline functions to the bottom  of  the
file.          Keeps modern GCC happier.

2014-11-22         Arnold D. Robbins     <arnold@skeeve.com>

        *  awk.h  (emalloc,  realloc):  Redefine  in terms of ...
        (emalloc_real, erealloc_real): New  static  inline  func-
tions.           (fatal):  Move  definition  up.          * gawk-
misc.c (xmalloc): If  count  is  zero,  make  it  one  for  older
        mallocs that require size > 0 (such as z/OS).

2014-11-21         Arnold D. Robbins     <arnold@skeeve.com>

        *  main.c:  Remove  a  debugging  //  comment.          *
NOTES: Removed.

        Unrelated:

        Revert changes of 2014-11-20  from  Paul  Eggert.  Causes
failures         on z/OS.

        Unrelated: Avoid unnecessary copying of $0.

        *  interpret.h  (UNFIELD):  New macro.          (r_inter-
pret): Use it where *lhs is assigned to.

2014-11-20  Paul Eggert  <eggert@cs.ucla.edu>

        Port to systems where malloc (0) and/or realloc(P, 0) re-
turns  NULL.           * gawkmisc.c (xmalloc):         * xalloc.h
(realloc):         Do not fail if malloc(0) or realloc(P, 0)  re-
turns  NULL.           Fail  only when the allocator returns null
when attempting to         allocate a nonzero number of bytes.

2014-11-19         Arnold D. Robbins     <arnold@skeeve.com>

        Infrastructure upgrades:

        *  Automake  1.14.1,  Gettext  0.19.3,   Libtool   2.4.3.
        * compile, extension/build-aux/compile: New files.

2014-11-19  gettextize  <bug-gnu-gettext@gnu.org>

        * configure.ac (AM_GNU_GETTEXT_VERSION): Bump to 0.19.3.

2014-11-16         Arnold D. Robbins     <arnold@skeeve.com>

        *  interpret.h:  Revert  change  of  2014-11-11  since it
breaks         certain uses.

        Unrelated:

        * dfa.c: Sync with GNU grep.

2014-11-15         Arnold D. Robbins     <arnold@skeeve.com>

        * array.c, awk.h, awkgram.y,  builtin.c,  dfa.c,  eval.c,
field.c,         interpret.h, io.c, main.c, mpfr.c, node.c, re.c,
regex_internal.h,         replace.c: Remove all uses of  MBS_SUP-
PORT.           *  regex_internal.h:  Disable  wide characters on
DJGPP.          * mbsupport.h:  Rework  to  be  needed  only  for
DJGPP.

2014-11-11         Arnold D. Robbins     <arnold@skeeve.com>

        Don't  let  memory  used increase linearly in the size of
        the   input.    Problem   reported   by   dragan    legic
        <dragan.legic@yandex.ru>.

        *   field.c   (set_record):   NUL-terminate  the  buffer.
        * interpret.h (r_interpret): Op_field_spec: if  it's  $0,
increment         the valref.  Op_store_var: if we got $0, handle
it appropriately.

2014-11-10         Arnold D. Robbins     <arnold@skeeve.com>

        Reorder main.c activities so that we can set a locale  on
the          command  line with the new, for now undocumented, -Z
option.

        * main.c (parse_args, set_locale_stuff):  New  functions.
        (stopped_early):      Made     file     level     static.
        (optlist, optab): Add new argument.          (main):  Ad-
just ordering and move inline code into new functions.

2014-11-09          Andrew  J.  Schorr     <aschorr@telemetry-in-
vestments.com>

        * gawkapi.c (node_to_awk_value): When the type wanted  is
AWK_UNDEFINED          and a it's a Node_val set to Nnull_string,
return AWK_UNDEFINED instead         of AWK_NUMBER 0.

2014-11-06         Andrew  J.  Schorr      <aschorr@telemetry-in-
vestments.com>

        *  awk.h (redirect_string): First argument should be con-
st.  Add a new         extfd argument  to  enable  extensions  to
create    files   with   pre-opened           file   descriptors.
        (after_beginfile): Declare function used in  both  eval.c
and gawkapi.c.          * eval.c (after_beginfile): Remove extern
declaration now in awk.h.           *  gawkapi.c  (api_get_file):
Implement  API  changes  to return         awk_input_buf_t and/or
awk_output_buf_t info, as well as accept an          fd  for  in-
serting  an  opened  file  into  the  table.          * gawkapi.h
(gawk_api): Modify the api_get_file declaration to         return
awk_bool_t   and  add  3  new  arguments  --  a  file  descriptor
        for inserting an already opened file, and awk_input_buf_t
and          awk_output_buf_t to return info about both input and
output.          (get_file): Add  new  arguments  to  the  macro.
        *  io.c (redirect_string): First arg should be const, and
add a new         extfd arg so extensions can pass in a file that
has  already  been          opened  by  the  extension.   Use the
passed-in  fd  when  appropriate,          and   pass   it   into
two_way_open.           (redirect):  Pass  new fd -1 arg to redi-
rect_string.          (two_way_open): Accept new extension fd pa-
rameter and open it         as a socket.

2014-11-05          Andrew  J.  Schorr     <aschorr@telemetry-in-
vestments.com>

        * io.c (retryable): New function to indicate whether  I/O
can  be          retried for this file instead of throwing a hard
error.          (get_a_record) Check whether this file is config-
ured for retryable         I/O before returning nonstandard -2.

2014-11-03         Norihiro Tanaka       <noritnk@kcn.ne.jp>

        *  re.c  (research): Use dfa superset to improve matching
speed.

2014-11-02         Arnold D. Robbins     <arnold@skeeve.com>

        *  profile.c  (div_on_left_mul_on_right):  New  function.
        (parenthesize): Call it.

2014-10-30         Arnold D. Robbins     <arnold@skeeve.com>

        * configure: Regenerated after fix to m4/readline.m4.

        Unrelated;  fixes  to profiling. Thanks to Hermann Peifer
and         Manuel Collado for pointing out problems:

        * profile.c (pprint):  For  Op_unary_minus,  parenthesize
-(-x)          correctly.           (prec_level):  Get the levels
right (checked the grammar).          (is_unary_minus): New func-
tion.           (pp_concat): Add checks for unary minus; needs to
be parenthesized.

2014-10-30         Andrew  J.  Schorr      <aschorr@telemetry-in-
vestments.com>

        *     NEWS:    Mention    installation    of    /etc/pro-
file.d/gawk.{csh,sh}.

2014-10-29         Andrew  J.  Schorr      <aschorr@telemetry-in-
vestments.com>

        *  configure.ac  (AC_CONFIG_FILES):  Add extras/Makefile.
        * Makefile.am (SUBDIRS): Add extras.           *  extras:
Add new subdirectory.

2014-10-29         Arnold D. Robbins     <arnold@skeeve.com>

        * dfa.c: Sync with GNU grep. Again, again.

2014-10-28         Arnold D. Robbins     <arnold@skeeve.com>

        * dfa.c: Sync with GNU grep. Again.

2014-10-25         Arnold D. Robbins     <arnold@skeeve.com>

        * dfa.c: Sync with GNU grep.

2014-10-17         John E. Malmberg      <wb8tyw@qsl.net>

        *  ext.c  (close_extensions): Test for null pointer since
        since this can be called by  signal  handler  before  the
        pointers are initialized.

2014-10-15         Arnold D. Robbins     <arnold@skeeve.com>

        Make sane the handling of AWKPATH and AWKLIBPATH:

        1.  Don't  explicitly  search "."; it must be in the path
either         physically or as null element  a  la  the  shell's
$PATH          2.  If environment's value was empty, use built-in
default value.          3. Set ENVIRON["AWK*PATH"]  to  the  path
used.

        *    io.c    (path_info):    Remove    try_cwd    member.
        (get_cwd):     Removed,     not      needed      anymore.
        (do_find_source):  Don't do explicit check in current di-
rectory.          It must come from  the  AWKPATH  or  AWKLIBPATH
variable.           *  main.c (path_environ): If value from envi-
ronment was empty,         set it to the default.   This  is  how
gawk has behaved since 2.10.

2014-10-13         Arnold D. Robbins     <arnold@skeeve.com>

        *  regcomp.c  (__re_error_msgid):  Make error message for
REG_EBRACK         more helpful - also used for unmatched [:, [.,
[=.          Thanks to Davide Brini for raising the issue.

2014-10-12         KO Myung-Hun          <komh78@gmail.com>

        Fixes for OS/2:

        *  Makefile.am  (install-exec-hook, uninstall-links): Use
$(EXEEXT).          * getopt.h:  Redefinitions  if  using  KLIBC.
        *  io.c (_S_IFDIR, _S_IRWXU): Define if the more standard
versions         are available.

2014-10-12         Arnold D. Robbins     <arnold@skeeve.com>

        * README: Remove Pat Rankin from VMS duties, per his  re-
quest.

2014-10-08         Arnold D. Robbins     <arnold@skeeve.com>

        * dfa.c: Sync with GNU grep.

2014-10-05         Arnold D. Robbins     <arnold@skeeve.com>

        * profile.c (pprint): Fix typo in header. Sheesh.

        Unrelated:

        *  awkgram.y  (mk_program):  Add  a comment that we don't
need to         clear the comment* variables.

2014-10-04         Arnold D. Robbins     <arnold@skeeve.com>

        * profile.c (pp_string_fp): Fix breaklines case to  actu-
ally         output the current letter. This broke at gawk 4.0.0.
Sigh.          Thanks to Bert Bos (bert@w3.org) for the report.

2014-10-03      Stephen Davies          <sdavies@sdc.com.au>

        * awkgram.y  (program_comment):  Renamed  from  comment0.
        (function_comment): Renamed from commentf.

2014-10-02         Arnold D. Robbins     <arnold@skeeve.com>

        * awkgram.y, profile.c: Minor white space cleanups.

2014-10-01         Arnold D. Robbins     <arnold@skeeve.com>

        Fix a few compile warnings:

        * awkgram.y (split_comment): Make static.          Gener-
al: Remove some unused variables, clean up some whitepace nits.

        * profile.c (indent): Add some braces to turn off compil-
er warnings.

2014-09-29          Andrew  J.  Schorr     <aschorr@telemetry-in-
vestments.com>

        * main.c (main): In optlist, it should say "h", not "h:",
since  there          is no argument for the help option.  Thanks
to Joep van Delft for         the bug report.

2014-09-29         Arnold D. Robbins     <arnold@skeeve.com>

        * gawkapi.h: Minor edits to sync with documentation. Does
not         influence the behavior of the API.

2014-09-28         Arnold D. Robbins     <arnold@skeeve.com>

        *  command.y (cmdtab): Add "where" as an alias for "back-
trace".          Finally!

        Unrelated:

        * dfa.c: Sync with GNU grep.

2014-09-27         Arnold D. Robbins     <arnold@skeeve.com>

        * awkgram.y (check_for_bad): Bitwise-and the bad  charac-
ter  with 0xFF         to avoid sign extension into a large inte-
ger.

        Unrelated:

        * configure.ac: Add an option to enable locale letters in
identifiers.          Undocumented and subject to being rescinded
at any time in the future.          * awkgram.y (is_alpha): Actu-
al  code  is  here.          * NEWS: Mention to look at configure
--help.

        Unrelated:

        * profile.c (pprint): Use "rule(s)" instead of "block(s)"
in the         header.

2014-09-23         Arnold D. Robbins     <arnold@skeeve.com>

        *  awkgram.y (yylex): Don't check for junk characters in-
side         quoted strings.  Caused issues on DJGPP and Solaris.

        Unrelated:

        * io.c (devopen): Straighten things out with  respect  to
        compatibility with BWK awk.

2014-09-19         Arnold D. Robbins     <arnold@skeeve.com>

        * awkgram.y: Further commentary as to the treacherousness
        of isalnum and isalpha.

2014-09-15         Arnold D. Robbins     <arnold@skeeve.com>

        Finish removing use of isalpha and isalnum.

        * awk.h (is_alpha, is_alnum, is_identchar): Add  declara-
tions.             *    awkgram.y    (yylex):    Use    is_alpha.
        (is_alpha,        is_alnum):        New        functions.
        (is_identchar):   Use   is_alnum.            *  builtin.c
(r_format_tree): Use  is_alpha,  is_alnum.           *  command.y
(yylex):  Use  is_alpha,  is_identchar.          * ext.c (is_let-
ter): Use is_alpha.          (is_identifier_char):  Removed;  re-
placed  uses  with  is_identchar.          * main.c (arg_assign):
Use is_alpha, is_alnum.          * node.c  (r_force_number):  Use
is_alpha.

2014-09-14         Arnold D. Robbins     <arnold@skeeve.com>

        *  awkgram.y  (is_identchar): Change from simple macro to
function         since use of  isalnum()  let  non-ASCII  letters
slip through into         identifiers.

2014-09-13      Stephen Davies          <sdavies@sdc.com.au>

        When  doing  pretty-printing (but not profiling), include
the original         comments in the output.

        General rules:

        Pretty printing:                 - Do NOT indent by a tab
                -  Do  NOT  print  the  header comments ("# BEGIN
rules", etc.)                  - DO print the comments  that  are
in the program

        Profiling:                   -   DO   indent   by  a  tab
                - DO print the header comments                  -
Do NOT print the program's original comments

        *  awkgram.y (comment0, commentf): New variables that are
pointers    to            program    and    function    comments.
        (get_comment):  New  function  that retrieves consecutive
comment   lines           and   empty   lines   as    a    unit).
        (split_comment):  New  function:  iff  first block in the
program is a         function and it  is  preceded  by  comments,
take  the last non-blank         line as function comment and any
preceding lines as program comment.)

        Following token rules were changed to handle comments:

        * awkgram.y (pattern, LEX_BEGIN, LEX_END,  LEX_BEGINFILE,
LEX_ENDFILE,          action, function_prologue, statements): Up-
date  to   handle   comments.
        Following functions were changed to handle comments:

        *  awkgram.y  (mk_program, mk_function, allow_newline and
yylex): Update         to handle comments. (Also  fixed  typo  in
case '\'.)

        *  profile.c (print_comment): New function to format com-
ment printing.           (indent,  pprint,  dump_prog,  pp_func):
Changed  to  handle  comments and         the revised indentation
rules.

2014-09-07         Arnold D. Robbins     <arnold@skeeve.com>

        * awk.h: Move libsigsegv stuff to ...          *  main.c:
here.  Thanks  to  Yehezkel  Bernat  for  motivating          the
cleanup.          * symbol.c (make_symbol, install,  install_sym-
bol):  Add const to         first parameter. Adjust decls and fix
up uses.

2014-09-05         Arnold D. Robbins     <arnold@skeeve.com>

        Add builtin functions to FUNCTAB for consistency.

        * awk.h (Node_builtin_func): New node type.          (in-
stall_builtins):  Declare new function.          * awkgram.y [DE-
BUG_USE]: New flag value for debug functions; they          don't
go   into  FUNCTAB.           (install_builtins):  New  function.
        * eval.c (nodetypes): Add  Node_builtin_func.           *
interpret.h  (r_interpret):  Rework  indirect  calls of built-ins
        since they're now in the symbol table.          *  main.c
(main):  Call  `install_builtins'.          * symbol.c (install):
Adjust for Node_builtin_func.          (load_symbols): Ditto.

2014-09-04         Arnold D. Robbins     <arnold@skeeve.com>

        * profile.c (pprint): Case Op_K_for: Improve printing  of
        empty for loop header.

        Unrelated: Make indirect function calls work for built-in
and         extension functions.

        * awkgram.y (lookup_builtin):  New  function.           *
awk.h  (builtin_func_t):  New typedef.          (lookup_builtin):
Declare it.          * interpret.h  (r_interpret):  For  indirect
calls,  add  code to         find and call builtin functions, and
call extension functions.

2014-09-01         Arnold D. Robbins     <arnold@skeeve.com>

        * builtin.c (do_substr): Return "" instead of null string
in  case          result is passed to length() with --lint. Based
on discussions in         comp.lang.awk.

        Unrelated:

        * interpret.h (r_interpret): For indirect function  call,
separate         error message if lookup returned NULL. Otherwise
got a core dump.          Thanks to "Kenny McKormack" for the re-
port in comp.lang.awk.

2014-08-27         Arnold D. Robbins     <arnold@skeeve.com>

        *  configure.ac: Add test for strcasecmp.          * reg-
comp.c: Remove special case  code  around  use  of  strcasecmp().
        * replace.c: Include missing/strncasecmp.c if either str-
casecmp()         or strncasecmp() aren't available.

2014-08-26         Arnold D. Robbins     <arnold@skeeve.com>

        * regcomp.c, regex_internal.c: Sync with GBLIC. Why not.

        Unrelated:

        Remove support for MirBSD. It uglified the code too  much
        for no discernible gain.

        *  configure.ac:  Remove  check  for MirBSD and define of
        LIBC_IS_BORKED.          * dfa.c: Remove  code  depending
on  LIBC_IS_BORKED.           *  main.c:  Ditto.           * reg-
comp.c: Ditto.          * NEWS: Updated.

2014-08-24         Arnold D. Robbins     <arnold@skeeve.com>

        * regex.h: Remove underscores in names of  parameters  in
function         declarations. Tweak names as needed.

2014-08-20         Arnold D. Robbins     <arnold@skeeve.com>

        * node.c (parse_escape): Max of 2 digits after

2014-08-18         Arnold D. Robbins     <arnold@skeeve.com>

        * symbol.c: General formatting cleanup.

2014-08-15         Arnold D. Robbins     <arnold@skeeve.com>

        *  main.c  (usage): Adjust whitespace for -L and add "in-
valid"         as a possible value for it.  Report from Robert P.
J. Day         <rpjday@crashcourse.ca>.

2014-08-14         Arnold D. Robbins     <arnold@skeeve.com>

        * Makefile.am (SUBDIRS): Put awklib after doc so that ex-
amples         get extracted when the doc changes.

2014-08-13         Arnold D. Robbins     <arnold@skeeve.com>

        * builtin.c (do_sub): Move initial allocation of the  re-
placement         string down towards code to do the replacement,
with a (we hope)         better guesstimate of how much  to  ini-
tially  allocate.  The idea         is to avoid unnecessary real-
loc() calls by making a better guess         at how much to allo-
cate.  This came up in an email discussion         with Tom Dick-
ey about mawk's gsub().

2014-08-12         Juergen Kahrs <jkahrs@users.sourceforge.net>

        * cmake/configure.cmake:          *  cmake/package.cmake:
Copyright     update.             *    README.cmake:            *
README_d/README.cmake: Moved file.

2014-08-12         Arnold D. Robbins     <arnold@skeeve.com>

        OFS being set should rebuild $0 using previous OFS if  $0
        needs  to be rebuilt. Thanks to Mike Brennan for pointing
this out.

        *  awk.h  (rebuild_record):  Declare.           *  eval.c
(set_OFS):  If not being called from var_init(), check         if
$0 needs rebuilding. If so, parse the record  fully  and  rebuild
it.          Make OFS point to a separate copy of the new OFS for
next time, since         OFS_node->var_value->stptr  was  already
updated  at  this  point.          * field.c (rebuild_record): Is
now extern instead of static.          Use OFS and OFSlen instead
of the value of OFS_node.

        Unrelated:

        *  Makefile.am (RM): Define for makes that don't have it,
        such as on OpenBSD.  Thanks to  Jeremie  Courreges-Anglas
        <jca@wxcvbn.org> for the report.

2014-08-05         Arnold D. Robbins     <arnold@skeeve.com>

        Bug fix: For MPFR sqrt(), need to set precision of result
to be         the same as that of the argument. Doesn't hurt oth-
er  functions.           See  test/mpfrsqrt.awk.  Thank  to Katie
Wasserman <katie@wass.net>         for the bug report.

        * mpfr.c (do_mpfr_func): New function. Runs code for MPFR
functions          while  still enabling debugging. Add call here
to mpfr_set_prec().          Original code from SPEC_MATH  macro.
        (SPEC_MATH): Change macro to call do_mpfr_func().

        Next  MPFR  bug  fix: The % operator gave strange results
for negative         numerator. Thanks again to  Katie  Wasserman
for the bug report.

        *   mpfr.c   (mpg_mod):   Use  mpz_tdiv_qr()  instead  of
mpz_mod().  From          the  GMP  doc,  mpz_mod()  should  have
worked; it's not clear why         it doesn't.

2014-08-03         Arnold D. Robbins     <arnold@skeeve.com>

        *  builtin.c  (format_tree):  Don't  need to check return
value of         wctombr for -2.  Thanks  to  Eli  Zaretskii  for
pointing this out.

        Unrelated:

        *  gawkapi.h:  Fix doc for API get_record - errcode needs
to         be greater than zero.          * interpret.h (r_inter-
pret):  Move  setting  of ERRNO to here, from ...          * io.c
(inrec): ... here. Makes the code cleaner.

2014-08-03         Andrew  J.  Schorr      <aschorr@telemetry-in-
vestments.com>

        *  awkgram.y  (getfname):  Match on either ptr or ptr2 so
--profile         will work in -M (MPFR bignum) mode.

2014-07-31         Arnold D. Robbins     <arnold@skeeve.com>

        * builtin.c (format_tree): Make %c handling more sane  on
Windows.          Rework the lint messages.

        Unrelated:

        *  dfa.c:  Sync with GNU grep. Mainly white space differ-
ences.

        Unrelated:

        *  mpfr.c  (cleanup_mpfr):  New  function  to  deallocate
_mpf_t1          and  _mpf_t2;  removes  some  valgrind warnings.
        *  awk.h  (cleanup_mpfr):  Add  declaration.            *
main.c (main): Add call to `cleanup_mpfr'.

        Fix memory leak:

        *  mpfr.c (do_mpfr_div): Add unref to denominator and nu-
merator         to not leak memory.  Thanks  to  Katie  Wasserman
<katie@wass.net>          for  isolating the problem to that rou-
tine.

2014-07-25         Arnold D. Robbins     <arnold@skeeve.com>

        * main.c (main): Add a warning message if -M is used  and
gawk was         compiled without MPFR/GMP.

2014-07-24         Arnold D. Robbins     <arnold@skeeve.com>

        *  main.c  (usage):  Put  text  for `-n' *after* text for
`-m'.           Report  from  Robert  P.  J.  Day  <rpjday@crash-
course.ca>.

        Fix  problems  with  I/O  errors reported by Assaf Gordon
        <assafgordon@gmail.com>:

        * io.c (inrec): Change type to bool to make calling easi-
er.  Add          check in non-EOF case for error, and if so, re-
turn false.          Update ERRNO in case  there  is  an  ENDFILE
block.           *  awk.h  (inrec):  Change  type in declaration.
        * interpret.h (r_interpret): Change call  of  inrec()  to
boolean         notation.

2014-07-10         Arnold D. Robbins     <arnold@skeeve.com>

        New  `div()'  function to do integer division and remain-
der;         mainly useful for use with GMP integers.  Thanks  to
        Katie Wasserman <katie@wass.net> for the suggestion.

        *  awk.h  (do_div,  do_mpfr_div):  Declare new functions.
        * builtin.c (do_div):  New  function.           *  mpfr.c
(do_mpfr_div): New function.          * awkgram.y (tokentab): New
entry.          (snode): Add check for do_div/do_mpfr_div to make
3rd arg         be an array.          * NEWS: Updated.          *
TODO: Updated.

2014-07-10         Arnold D. Robbins     <arnold@skeeve.com>

        * awkgram.y (check_for_bad): New routine to do the  fatal
message,         with smarter checking.          (nextc): Call it
as appropriate.

        * builtin.c (format_tree): Add check for bad returns from
mbrlen          to  avoid  trying  to  malloc  (size_t) -1 bytes.
Thanks to         mail.green.fox@gmail.com for the bug report.

2014-07-03         Arnold D. Robbins     <arnold@skeeve.com>

        * awkgram.y (nextc): Add bool check_for_bad parameter  to
check           for   bad   characters  in  the  source  program.
        (yylex): Adjust calls.

2014-06-24         Arnold D. Robbins     <arnold@skeeve.com>

        * main.c (main): The --pretty-print option no longer runs
the           program.    This   removes   the   need   for   the
GAWK_NO_PP_RUN  environment  var.            *   NEWS:   Updated.
        * TODO: Updated.

2014-06-22              Paul     Eggert              <eggert@pen-
guin.cs.ucla.edu>

        Bring in from GNULIB:

        regex: fix memory leak in compiler         Fix by Andreas
Schwab       in:               https://sourceware.org/ml/libc-al-
pha/2014-06/msg00462.html         * lib/regcomp.c  (parse_expres-
sion):  Deallocate  partially         constructed tree before re-
turning error.

2014-06-19         Arnold D. Robbins     <arnold@skeeve.com>

        * builtin.c (do_sub): Add more info to  leading  comment.
        Add some whitespace in the code.

2014-06-08         Arnold D. Robbins     <arnold@skeeve.com>

        * dfa.c: Sync with GNU grep.

2014-06-03         Arnold D. Robbins     <arnold@skeeve.com>

        * dfa.c (mbs_to_wchar): Define a macro if not MBS.

2014-05-29         Arnold D. Robbins     <arnold@skeeve.com>

        * dfa.c: Sync with GNU grep.

2014-05-26         Arnold D. Robbins     <arnold@skeeve.com>

        * io.c (inetfile): Change return type to bool.  Wrap code
        with ifdef HAVE_SOCKETS so that it'll compile on DJGPP.

2014-05-22         Andrew  J.  Schorr      <aschorr@telemetry-in-
vestments.com>

        Allow any redirected getline inside BEGINFILE/ENDFILE.

        * awkgram.y (LEX_GETLINE): Only require a redirection and
not also         a variable if getline is in a BEGINFILE or  END-
FILE  rule.           *  interpret.h (Op_K_getline_redir): Remove
check and fatal error.

2014-05-20         Arnold D. Robbins     <arnold@skeeve.com>

        * dfa.c (dfaexec): Minor sync with GNU grep.

2014-05-14         Arnold D. Robbins     <arnold@skeeve.com>

        * custom.h (_GL_PURE): Move  definition  to  here.  Sigh.
        * dfa.h, dfa.c: Sync with GNU grep. Sigh.

        Unrelated:

        *  custom.h: Remove stuff for Ultrix 4.3. No one has such
        systems anymore; this just got missed earlier.

2014-05-11         Arnold D. Robbins     <arnold@skeeve.com>

        * debug.c (do_eval): Repair fix  of  2014-05-09  and  use
        assoc_remove  to  take  @eval  out of the function table.
        * symbol.c: Fix a comment.  This file needs some work.

2014-05-10         Arnold D. Robbins     <arnold@skeeve.com>

        * io.c (get_a_record):  Finish  TERMNEAREND  handling  in
case         we don't have a regular file but aren't going to get
more data.          Added some additional comments.

2014-05-09         Arnold D. Robbins     <arnold@skeeve.com>

        * debug.c (do_eval): Don't free `f' which points into the
context          that  was  previously freed. Bug reported by Jan
Chaloupka         <jchaloup@redhat.com>.   Apparently  introduced
with  move  to          SYMTAB and FUNCTAB, but only showed up on
Fedora 20 and Ubuntu 14.04,         which  have  a  newer  glibc.
        (do_eval):  Fix  a memory leak seen by valgrind on Fedora
20 and         Ubuntu 14.04: the new SRCFILE that is added wasn't
released.

        Unrelated:

        *  io.c (get_a_record): Handle return of TERMNEAREND when
the         entire file has been read into the buffer  and  we're
using   a           regex  for  RS.  Bug  report  by  Grail  Dane
<grail69@hotmail.com>.

2014-05-04         Arnold D. Robbins     <arnold@skeeve.com>

        * debug.c (debug_prog): Change check for GAWK_RESTART  so
that  it         actually works. Bug fix: run command in debugger
would start         over again but not actually start running the
program.

2014-04-25          Andrew  J.  Schorr     <aschorr@telemetry-in-
vestments.com>

        * io.c (two_way_open): In forked child, reset SIGPIPE  to
SIG_DFL.           Fixes  problems with "broken pipe" errors from
child processes,         restoring 4.1.0  and  earlier  behavior.
Thanks  to  Daryl  F         <wyatt@prairieturtle.ca> for the re-
port.          (gawk_popen): Ditto.

2014-04-25         Arnold D. Robbins     <arnold@skeeve.com>

        * dfa.h, dfa.c: Merge with GNU grep; lots of forward  mo-
tion.

2014-04-24         Arnold D. Robbins     <arnold@skeeve.com>

        Update xalloc.h for pending merge with dfa.

        *  xalloc.h (xstrdup): Implement this.          (x2nreal-
loc): Incorporate changed logic from GNULIB.

2014-04-20         Andrew  J.  Schorr      <aschorr@telemetry-in-
vestments.com>

        *  io.c  (struct  inet_socket_info): Define new structure
        for   use   in   parsing   special   socket    filenames.
        (inetfile):  Parse  all  components of the special socket
filename         into the struct inet_socket_info.  Returns  true
only  if it is a         valid socket fliename, unlike the previ-
ous version which checked         for  the  '/inet[46]?/'  prefix
only.           (redirect): Patch to use updated inetfile() func-
tion.          (devopen): Remove logic to parse socket filenames,
since  this  has         been moved into the inetfile() function.
        (two_way_open): Update args to inetfile().

2014-04-20         Arnold D. Robbins     <arnold@skeeve.com>

        * builtin.c (do_rand): Make calls to random() in predict-
able          order  to  avoid  order  of  evaluation differences
amongst   compilers.            Thanks   to   Anders    Magnusson
<ragge@ludd.ltu.se> (of the PCC team)         for the suggestion.

2014-04-18         Arnold D. Robbins     <arnold@skeeve.com>

        *  configure.ac: Change adding of -export-dynamic for GCC
to be         -Wl,-export-dynamic, which then works for PCC also.

2014-04-11         Arnold D. Robbins     <arnold@skeeve.com>

        * io.c (closemaybesocket): Define if  not  defined,  e.g.
building          without socket code. Thanks to dave.gma@google-
mail.com (Dave Sines)         for the report.

2014-04-08         Arnold D. Robbins     <arnold@skeeve.com>

        * 4.1.1: Release tar ball made.

2014-04-08         Arnold D. Robbins     <arnold@skeeve.com>

        * README: Update.          * configure.ac: Bump version.

2014-04-03         Arnold D. Robbins     <arnold@skeeve.com>

        * regcomp.c (parse_bracket_exp): Move a call to `re_free'
inside         an ifdef. Makes the code marginally cleaner.

2014-03-30         Arnold D. Robbins     <arnold@skeeve.com>

        * dfa.c: Sync with GNU grep.

2014-03-28         Arnold D. Robbins     <arnold@skeeve.com>

        *  configure.ac:  Remove duplicate AC_HEADER_TIME and re-
arrange         order of macros some. May help on older systems.

2014-03-23         Arnold D. Robbins     <arnold@skeeve.com>

        * dfa.c: Move include of dfa.h around for correct  build-
ing         on Irix. Thanks to Nelson H.F. Beebe for the report.

        Unrelated:

        * .gitignore: Simplify .dSYM pattern for Mac OS X.

2014-03-21         Arnold D. Robbins     <arnold@skeeve.com>

        *  dfa.c  (using_simple_locale): Add ifdefs in case there
is no         locale support at all. Thanks to Scott  Deifik  for
the report.

        Unrelated:

        * main.c (UPDATE_YEAR): Set to 2014.

2014-03-17         Arnold D. Robbins     <arnold@skeeve.com>

        *  .gitignore:  Add  .dSYM  directories  for  Mac  OS  X.
        Thanks to Hermann Peifer for the suggestion.

2014-03-10         Arnold D. Robbins     <arnold@skeeve.com>

        * dfa.h, dfa.c: Sync with  grep.  Yet  again.           *
regex_internal.c   (built_wcs_upper_buffer,  build_upper_buffer):
        Fixes from GNULIB for mixed case matching on Mac OS X.

        Unrelated:

        * builtin.c (format_tree): Smarten handling of  %'  flag.
Always          pass  it in for floating point formats. Then only
add the         thousands_sep if there is one.  Also,  allow  for
thousands_sep          to  be  a  string, not just one character.
Thanks to Michal Jaegermann         for the report.

2014-03-08         Andrew  J.  Schorr      <aschorr@telemetry-in-
vestments.com>

        *  gawkapi.c  (api_impl):  Add memory allocation function
pointers.          *  gawkapi.h  (GAWK_API_MINOR_VERSION):  Bump.
        (gawk_api_t):  Add  memory  allocation  function pointers
api_malloc,          api_calloc,   api_realloc,   and   api_free.
        (gawk_malloc,  gawk_calloc, gawk_realloc, gawk_free): New
macros.           (emalloc):  Replace  malloc  with  gawk_malloc.
        (erealloc): Replace erealloc with gawk_erealloc.

2014-03-05         Arnold D. Robbins     <arnold@skeeve.com>

        Straighten out enumerated types some more.

        *  awk.h  (add_srcfile):  Fix  type  of  first parameter.
        *   awkgram.y   (add_srcfile,   do_add_srcfile):   Ditto.
        *  cmd.h  (A_NONE): New enum nametypeval.          * com-
mand.y  (argtab):  Use  it  in  final  value.           *   ext.c
(make_builtin):   Use   awk_false,   awk_true.            *  io.c
(init_output_wrapper): Use awk_false.

        Unrelated:

        * debug.c (do_commands): Initialize num to silence  warn-
ings.          Thanks to Michal Jaegermann.

        Unrelated:

        *  builtin.c (do_mktime): Change lint warning for minutes
to         check against 59, not 60.  Thanks  to  Hermann  Peifer
for the report.

2014-03-03         Arnold D. Robbins     <arnold@skeeve.com>

        * dfa.c: Sync with grep. Yet again.

2014-02-28         Arnold D. Robbins     <arnold@skeeve.com>

        * dfa.c: Sync with grep. Looks like good improvement with
        respect to bracket expressions.

2014-02-27         Arnold D. Robbins     <arnold@skeeve.com>

        Fixes for enum/int mismatches as warned by  some  compil-
ers.

        *  awk.h  (ANONE): New enum for array sorting.          *
array.c (assoc_list): Use it.          * builtin.c (format_tree):
New  MP_NONE  value.           *  gawkapi.c:  Use  awk_false  and
awk_true everywhere instead of         false and true.

2014-02-26         Arnold D. Robbins     <arnold@skeeve.com>

        * configure.ac: Set up do-nothing  extension/Makefile  on
        MirBSD also.

2014-02-21         Arnold D. Robbins     <arnold@skeeve.com>

        * dfa.h, dfa.c (parse_bracket_exp): Sync with grep.

2014-02-20         Arnold D. Robbins     <arnold@skeeve.com>

        *  regex.h,  regex.c, regex_internal.c, regex_internal.h:
Sync         with GLIBC.  Mainly  copyright  updates.           *
getopt.c,  getopt.h,  getopt1.c,  getopt_int.h: Ditto.          *
dfa.c (parse_bracket_exp): Sync with grep,  where  they  restored
        the buggy code.  Sigh.

        Unrelated:

        *  NEWS:  Typo fix.          * interpret.h (r_interpret):
Init a variable for BEGINFILE to avoid         compiler warnings.
Thanks to Michal Jaegermann.

2014-02-15         Arnold D. Robbins     <arnold@skeeve.com>

        * awkgram.c, command.c: Regenerated - Bison 3.0.2.

2014-02-04         Arnold D. Robbins     <arnold@skeeve.com>

        *  dfa.c  (to_uchar):  Make  use  of this. Syncs with GNU
grep.

2014-02-03         Arnold D. Robbins     <arnold@skeeve.com>

        * awkgram.y (negate_num): Bracket `tval' in  #ifdef  MPFR
since it's         only used in that code.

2014-01-31         Arnold D. Robbins     <arnold@skeeve.com>

        *  Makefile.am  (dist-hook):  Improve creation of pc/con-
fig.h. We         have to jump through a lot of hoops  for  'make
distcheck' to         actually work.

2014-01-30         Arnold D. Robbins     <arnold@skeeve.com>

        *  Makefile.am  (dist-hook):  Improve creation of pc/con-
fig.h to copy         the new file into the distribution directo-
ry  being  created.           Also,  put the temporary files into
/tmp.

2014-01-28         Arnold D. Robbins     <arnold@skeeve.com>

        * awkgram.y (negate_num): If just a double, return. Fixes
a  bug         that showed up on 32-bit systems with MPFR. Thanks
to Eli Zaretskii         and Corinna  Vinschen  for  the  report.
Also,  free  the MPZ integer.          Thanks to valgrind for the
report.

        Unrelated:

        * dfa.c: Sync with GNU grep - removed some special  cased
code         for grep.

2014-01-24         Arnold D. Robbins     <arnold@skeeve.com>

        * configure.ac, field.c: Update copyright year.

2014-01-19         Arnold D. Robbins     <arnold@skeeve.com>

        * awkgram.y (negate_num): Handle the case of -0 for MPFR;
the sign         was getting lost. Thanks to Hermann  Peifer  for
the report.

2014-01-18         Arnold D. Robbins     <arnold@skeeve.com>

        *  dfa.c  (parse_bracket_exp):  Sync with GNU grep, which
now uses         gawk's code  for  RRI  in  single-byte  locales!
Hurray.

2014-01-16         Arnold D. Robbins     <arnold@skeeve.com>

        *  configure.ac: For z/OS, restore creation of do-nothing
        Makefile in extension directory.

2014-01-14         Arnold D. Robbins     <arnold@skeeve.com>

        * field.c (do_split): Make sure split() gets FS value  if
no         third arg even after FPAT was set. Thanks to Janis Pa-
panagnou         for the report.

2014-01-13         Arnold D. Robbins     <arnold@skeeve.com>

        * README: Fix John Malmberg's email address.

2014-01-12         Arnold D. Robbins     <arnold@skeeve.com>

        * awkgram.y:  Update copyright year.          (func_use):
Simplify  code.           *  command.y:   Update  copyright year.
        * ext.c:  Update copyright year.          (make_builtin):
Small simplification.          (make_old_builtin): Make code con-
sistent    with    make_builtin(),    add             call     to
track_ext_func().          * bootstrap.sh: Update copyright year.
Remove touch of version.c         since that file  is  no  longer
autogenerated.

2014-01-07         Arnold D. Robbins     <arnold@skeeve.com>

        *  command.y  (next_word):  Move  into ifdef for HAVE_LI-
BREADLINE,         since it's only used by that code.           *
ext.c (load_old_ext): Minor improvements.

2014-01-03         Arnold D. Robbins     <arnold@skeeve.com>

        *   config.guess,   config.rpath,   config.sub,  depcomp,
        install-sh: Updated.          * dfa.h, dfa.c:  Sync  with
GNU grep; comment fix and copyright year.          * NEWS: Updat-
ed some, including copyright year.

2013-12-26         Arnold D. Robbins     <arnold@skeeve.com>

        * README: Add John Malmberg for VMS.

2013-12-24         Arnold D. Robbins     <arnold@skeeve.com>

        * getopt.h: Add `defined(__sun)' to list of  system  that
do  get  to         include stdlib.h.  Needed for Illumos. Thanks
to         Richard Palo <richard.palo@free.fr> for the report.

2013-12-21         Mike Frysinger        <vapier@gentoo.org>

        * configure.ac: Add --disable-extensions flag to  control
        compiling   extensions.    Better   for  cross-compiling.
        (AC_CANONICAL_HOST): Added. Changed case  statements  ap-
propriately.           *  Makefile.am  (check-for-shared-lib-sup-
port): Removed.           (check-recursive,  all-recursive):  Re-
moved.

2013-12-21         Arnold D. Robbins     <arnold@skeeve.com>

        *  config.guess:  Updated.           *  configure,  aclo-
cal.m4: Updated based on automake 1.13.4.

2013-12-19         Arnold D. Robbins     <arnold@skeeve.com>

        * regexec.c (re_search_internal): Make sure `dfa' pointer
is         not NULL before trying to dereference it.

2013-12-16         Arnold D. Robbins     <arnold@skeeve.com>

        *  configure.ac  (AC_FUNC_VPRINTF): Remove. Not needed on
current         systems.          * awk.h (HAVE_VPRINTF):  Remove
check.

2013-12-12         John E. Malmberg      <wb8tyw@qsl.net>

        *  io.c  (redirect):  Add  additional  VMS  error  codes.
        (nextfile): Retry open after closing some files.

2013-12-10          Scott  Deifik           <scottd.mail@sbcglob-
al.net>

        * io.c (closemaybesocket): Add definition for DJGPP.

2013-12-10         Arnold D. Robbins     <arnold@skeeve.com>

        * awk.h (Floor, Ceil): Remove declarations and VMS redef-
initions.          *  floatcomp.c  (Floor,  Ceil):  Removed,  not
needed.  Move  bracketing          ifdef  to the top of the file.
        * builtin.c (double_to_int): Use floor() and ceil().

2013-12-07         Arnold D. Robbins     <arnold@skeeve.com>

        * regex_internal.h (__attribute__): Define  to  empty  if
not  GCC.          * custom.h (__attribute__): Remove the defini-
tion from here; the         right place was regex_internal.h.

2013-12-06         Arnold D. Robbins     <arnold@skeeve.com>

        No  need   to   generate   version.c   from   version.in.
        Thanks  to John E. Malmberg <wb8tyw@qsl.net> for the sug-
gestion.

        * version.in: Removed.          *  version.c:  Use  PACK-
AGE_STRING  directly.          * Makefile.am (EXTRA_DIST): Remove
version.in.           (distcleancheck_listfiles):   Remove   this
rule.           (MAINTAINERCLEANFILES):  Remove  this definition.
        (version.c): Remove the rule to create it.

2013-12-05         Arnold D. Robbins     <arnold@skeeve.com>

        Fixes for Z/OS.

        * custom.h (__attribute__): Define to  empty.           *
dfa.c  (parse_bracket_exp):  Add  a  cast  to  quiet  a  warning.
        * regex.c: Correctly bracket include of <sys/param.h>.

        Unrelated:

        * debug.c (find_rule): Add a FIXME comment.

2013-12-03         John E. Malmberg     <wb8tyw@qsl.net>

        * io.c (redirect):  Add  additional  VMS  error  code  to
check.           (do_find_source):  Append "/" if not a VMS file-
name.

2013-12-01         Andrew  J.  Schorr      <aschorr@telemetry-in-
vestments.com>

        * main.c (optab): Sort by long option name.

2013-11-27          Andrew  J.  Schorr     <aschorr@telemetry-in-
vestments.com>

        * main.c (optab): Add entry for --include.

2013-11-23         Arnold D. Robbins     <arnold@skeeve.com>

        * dfa.c: Merge from grep; minor fixes in  how  bit  twid-
dling         is done.

2013-11-01         Arnold D. Robbins     <arnold@skeeve.com>

        * dfa.c (lex): Reset laststart so that stuff like  works.
        Fix from grep.

2013-10-31         Arnold D. Robbins     <arnold@skeeve.com>

        * builtin.c (efwrite): If write error to stdout is EPIPE,
        die  silently.  Thanks to Hermann Peifer for helping find
this.

2013-10-22         Arnold D. Robbins     <arnold@skeeve.com>

        Revise error messages when writing to standard output  or
standard         error to ignore EPIPE.  Add the ability based on
an environment         variable to get the source file  and  line
number.

        *    awk.h    (r_warning):    Renamed    from    warning.
        (warning): New macro to set location  and  call  warning.
        *  io.c  (flush_io):  Print  errors  only  if  not EPIPE.
        (close_io): Ditto.          * main.c (lintfunc): Init  to
r_warning.             (main):   Enhance   explanatory   comment.
        (usage): Print errors only if not EPIPE.           (copy-
left):  Ditto.           * msg.c (err): Make printing srcfile and
srcline depend upon          GAWK_MSG_SRC  environment  variable.
        (r_warning): Renamed from warning.

2013-10-17         Arnold D. Robbins     <arnold@skeeve.com>

        *  main.c  (main): Ignore SIGPIPE. See the comment in the
code.          Thanks to Alan Broder for reporting the issue.

        Unrelated:

        * rand.c (do_rand): Fix  computation  and  loop  checking
against         1.0 to use do..while.

2013-10-16         Arnold D. Robbins     <arnold@skeeve.com>

        Make  -O  work  again.  Turns out that C99 bool variables
        are clamped to zero or one.

        * main.c (do_optimize): Init to  false.           (main):
Set  do_optimize  to true on -O.          * eval.c (setup_frame):
Change all uses of do_optimize to be         a boolean check  in-
stead of a test > 1.          * awkgram.y: Ditto.          (opti-
mize_assignment):  Remove   check   against   do_optimize   since
        it was inited to true anyway.

        Unrelated:

        *  re.c  (resetup): Add a comment about the joy of syntax
bits.

        Unrelated:

        * builtin.c (do_rand): If result  is  exactly  1.0,  keep
trying.          Thanks to Nelson Beebe.

2013-10-10         Arnold D. Robbins     <arnold@skeeve.com>

        * dfa.c (lex): Sync with GNU grep. Handle multibyte and

        Unrelated:

        *  awk.h  [ARRAY_MAXED]: Fix value of this and subsequent
flags         after addition  of  NULL_FIELD.           *  eval.c
(flags2str): Add NULL_FIELD. Duh.

2013-10-09         Arnold D. Robbins     <arnold@skeeve.com>

        *  awkgram.y  (mk_assignment):  Rework  switch  to handle
Op_assign,         and to provide a better error message upon un-
known opcode.

2013-09-28         Arnold D. Robbins     <arnold@skeeve.com>

        * dfa.c: Sync with GNU grep.

2013-09-25         Arnold D. Robbins     <arnold@skeeve.com>

        *  builtin.c  (do_rand):  Make  the result more random by
calling         random() twice. See  the  comment  in  the  code.
Thanks  to          Bob  Jewett <jewett@bill.scs.agilent.com> for
the report and         the fix.

2013-09-24         Arnold D. Robbins     <arnold@skeeve.com>

        * debug.c (find_rule): Handle case where lineno is  zero.
Can  happen          if break is given without a line number on a
current line. Thanks         to Ray Song <i@maskray.me>  for  the
report.

2013-09-19         Arnold D. Robbins     <arnold@skeeve.com>

        *  dfa.c  (parse_bracket_exp): Use code from grep to keep
things within         range (updates change of  2013-09-08).  Fix
whitespace in one of the         gawk-only additions.

2013-09-13         Arnold D. Robbins     <arnold@skeeve.com>

        Fix   use   of   NF   after   it's   extended,  e.g.  see
test/nfloop.awk.

        *  awk.h  (NULL_FIELD):  New  flag          *   builtin.c
(do_print_rec):  Check  f0->flags  instead of if         equal to
Nnull_string.             *    eval.c    (r_get_field):     Check
(*lhs)->flags  instead  of  if          equal  to Nnull_string or
Null_field.          * field.c (init_fields): Init field zero and
Null_field  with          NULL_FIELD flag.          (set_NF): Set
parse_high_water = NF in case NF extended past  the          end.
This is the actual bug fix.

2013-09-08         Arnold D. Robbins     <arnold@skeeve.com>

        Fixes based on reports from a static code checker. Thanks
to         Anders Wallin for sending in the list.

        * array.c (asort_actual): Free list  if  it's  not  NULL.
        *  builtin.c  (do_sub):  Set buf to NULL and assert on it
before  using          it.           *   cint_array.c   (cint_ar-
ray_init):  Clamp  any value of NHAT from the         environment
such  that  it  won't  overflow  power_two_table  when  used   as
        an  index.           *  dfa.c  (parse_bracket_exp): Check
that len is in  range  before  using  it          to  index  buf.
        * getopt.c (_getopt_internal_r): Change call to alloca to
use malloc.          * io.c (socket_open): Init read_len to zero.
        (two_way_open):  Upon failure to fork, close the slave fd
also.          * re.c  (research):  Init  try_backref  to  false.
        *  regcomp.c  (build_range_exp): Free any items that were
allocated  in          the  case  where  not  all   items   were.
        (build_charclass_op):  Same.  Init  br_token to zero with
memset.          (create_tree): Init token t to zero with memset.
        * regex_internal.c (re_dfa_add_node): Free any items that
were         allocated in the case  where  not  all  items  were.
        *  symbol.c  (destroy_symbol): On default, break, to fall
into releasing         of resources.

2013-08-29         Arnold D. Robbins     <arnold@skeeve.com>

        * debug.c (HAVE_HISTORY_LIST): Move checks and defines to
the  top.          (do_save, serialize): Adjust #if checks to de-
pend on having both         readline and the  history  functions.
Needed  for  Mac OS X whose         native readline is a very old
version. Sigh.          * configh.in, configure: Regenerated  due
to  change  in m4/readline.m4.          Issue reported by Hermann
Peifer and Larry Baker.

        Unrelated:

        * getopt.c: Sync with GLIBC, changes are minor.

        Unrelated:

        * dfa.c: Sync with version in grep. Primarily  whitespace
/ comment         wording changes.

2013-08-26         Arnold D. Robbins     <arnold@skeeve.com>

        * regcomp.c (parse_dup_op): Remove RE_TOKEN_INIT_BUG code
(change of         Feb 19 2005) since it's no longer needed.

        * regcomp.c (re_fastmap_iter): Undo addition of  volatile
from         Jan 18 2007; no longer needed and is one less change
to have to         maintain against the upstream.

        * regcomp.c, regex.h, regex_internal.h: Sync with GLIBC.

2013-08-22         Arnold D. Robbins     <arnold@skeeve.com>

        * str_array.c (env_store): If the new value being  stored
is  NULL,          pass in "" instead. Avoids core dump on Mac OS
X.          Thanks to Hermann Peifer for the bug report.

2013-08-20         Arnold D. Robbins     <arnold@skeeve.com>

        *   nonposix.h:   New   file.   Contains   FAKE_FD_VALUE.
        *  awk.h:  Include  it  if MinGW or EMX.          * Make-
file.am (base_sources): Add nonposix.h.

2013-08-18         Arnold D. Robbins     <arnold@skeeve.com>

        Reflect updates to ENVIRON into the real environment.

        * awk.h  (init_env_array):  Add  declaration.           *
main.c  (load_environ):  Call  init_env_array.          * str_ar-
ray.c   (env_remove,   env_store,   env_clear,   init_env_array):
        New   functions.            (env_array_func):  New  array
vtable.

2013-08-18         Arnold D. Robbins     <arnold@skeeve.com>

        * array.c (force_array): Set symbol->xarray to  NULL  be-
fore           initing   the   array   if  it  was  Node_var_new.
        (null_array):   Restore   assert,   undoing   change   of
2013-05-27.

2013-08-15         Arnold D. Robbins     <arnold@skeeve.com>

        * debug.c (print_memory): Fix whitespace / indentation.

2013-08-02         Arnold D. Robbins     <arnold@skeeve.com>

        * awkgram.y (append_rule): Add attempt to insert any com-
ment         before a rule. Commented out at the moment.

2013-07-30         Arnold D. Robbins     <arnold@skeeve.com>

        * awk.h (enum opcodeval): Add Op_comment.          * awk-
gram.y   (comment):   New   variable   to   hold   comment  text.
        (statement): Add saved comments  to  lists  being  built.
        (allow_newline):  Save  comment text if necessary. Append
if   have           existing   text.            (yylex):   Ditto.
        *   debug.c   (print_instruction):   Handle   Op_comment.
        * eval.c (optypes): Add entry for Op_comment.           *
interpret.h  (r_interpret): Ditto.          * profile.c (pprint):
For Op_comment, print the comment text.

2013-07-24         Arnold D. Robbins     <arnold@skeeve.com>

        * io.c (FAKE_FD_VALUE): Move  definition  from  here  ...
        *  awk.h  (FAKE_FD_VALUE): ... to here. Fixes compilation
on MinGW.

2013-07-08         Arnold D. Robbins     <arnold@skeeve.com>

        * io.c (get_a_record): Change `min' to `MIN' for  consis-
tency with         other files and general practice.

2013-07-07          Andrew  J.  Schorr     <aschorr@telemetry-in-
vestments.com>

        * configure.ac (AC_CHECK_FUNCS): Check  for  sigprocmask.
        *  io.c  (wait_any):  If  sigprocmask is available, block
signals instead         of ignoring them temporarily.

2013-07-05         Andrew  J.  Schorr      <aschorr@telemetry-in-
vestments.com>

        *  gawkapi.h  (gawk_api):  Document that the api_get_file
function will not         access the file type and  length  argu-
ments if the file name is empty.

2013-07-04          Andrew  J.  Schorr     <aschorr@telemetry-in-
vestments.com>

        * configure.ac (AC_CHECK_FUNCS): Add a check for waitpid.
        * io.c (wait_any): Enhance comment to explain why we loop
reaping all         exited children when the  argument  is  zero.
When  available, use waitpid         with WNOHANG to avoid block-
ing.  Remove my previous incorrect patch  to          exit  after
reaping   the   first   child.    The  function  is  intended  to
        wait for all children, since we  are  not  careful  about
reaping children         as soon as they die.

2013-07-02          Andrew  J.  Schorr     <aschorr@telemetry-in-
vestments.com>

        * gawkapi.h  (gawk_api):  Remove  unused  api_lookup_file
hook.          (lookup_file): Remove associated macro.          *
gawkapi.c    (api_lookup_file):    Remove    unused     function.
        (api_impl):  Remove unused api_lookup_file hook.

2013-07-02          Andrew  J.  Schorr     <aschorr@telemetry-in-
vestments.com>

        * awkgram.y (main_beginfile): Declare new global INSTRUC-
TION  *.          (parse_program): Set main_beginfile to point to
the BEGINFILE          instruction  block.           *  gawkapi.c
(api_get_file): After nextfile starts a new file,         we need
to run the BEGINFILE actions.  We retrieve  the          instruc-
tion  pointer from main_beginfile and execute it until         we
reach the Op_after_beginfile opcode.  We then run after_beginfile
        manually and restore the value of currule and source.

2013-07-04          Andrew  J.  Schorr     <aschorr@telemetry-in-
vestments.com>

        * gawkapi.h (awk_element_t): Add comment indicating  that
the   array          element  index  will  always  be  a  string!
        * gawkapi.c (api_flatten_array): When converting the  in-
dex  to  an awk         value, request a string conversion, since
we want the indices to         appear as strings  to  the  exten-
sions.   This  makes  the call to         force_string redundant,
since node_to_awk_value does that internally         when we  re-
quest a string.

2013-07-02          Andrew  J.  Schorr     <aschorr@telemetry-in-
vestments.com>

        * eval.c (update_ERRNO_string): Set PROCINFO["errno"]  to
0.          * io.c (inrec): Since get_a_record may now return -2,
be  sure          to  throw  an  error  in  that  case  as  well.
        (wait_any):  Fix what appears to be a bug.  The old logic
repeatedly         called wait until it failed.  When  a  process
has  multiple children,         this causes it to stall until all
of them have exited.  Instead,         we now exit  the  function
after the first successful wait call.          (do_getline_redir,
do_getline): Handle case where get_a_record          returns  -2.
        (errno_io_retry):  New  function to decide whether an I/O
operation  should          be  retried.           (get_a_record):
When read returns an error, call errno_io_retry to         decide
whether the operation  should  be  retried.   If  so,  return  -2
        instead of setting the IOP_AT_EOF flag.

2013-07-01          Andrew  J.  Schorr     <aschorr@telemetry-in-
vestments.com>

        * eval.c (update_ERRNO_int, unset_ERRNO): Update  PROCIN-
FO["errno"].

2013-06-30          Andrew  J.  Schorr     <aschorr@telemetry-in-
vestments.com>

        * awk.h (redirect_string): Declare new function that pro-
vides API access         to the redirection mechanism.          *
gawkapi.h (GAWK_API_MINOR_VERSION): Bump from 0 to 1 since 2  new
        hooks were added to the api.          (gawk_api_t): Add 2
new     functions     api_lookup_file      and      api_get_file.
        (lookup_file,  get_file):  New macros to wrap the new API
functions.          * gawkapi.c (curfile): Declare  this  extern,
since   it   is   needed          by  lookup_file  and  get_flie.
        (api_lookup_file): Find an open file using curfile or ge-
tredirect().           (api_get_file):  Find or open a file using
curfile   or    redirect_string().             (api_impl):    Add
api_lookup_file   and   api_get_file.            *   io.c  (redi-
rect_string):  Renamed  from  redirect  and   changed   arguments
        to  take  a string instead of a 'NODE *'.  This allows it
to  be  called          through  the  API's  new  get_file  hook.
        (redirect):  Now  implemented  by calling redirect_string
backend function.

2013-07-04         Arnold D. Robbins     <arnold@skeeve.com>

        * builtin.c (format_tree): Fixes for  %c  with  multibyte
characters          and  field width > 1. Bugs reported by Nethox
<nethox@gmail.com>.

2013-07-02         Arnold D. Robbins     <arnold@skeeve.com>

        * profile.c (pp_string): Add a call to  chksize  and  fix
another.          Avoids valgrind errors on profile5 test. Thanks
to Andrew         Schorr for the report.

2013-06-27         Arnold D. Robbins     <arnold@skeeve.com>

        * awkgram.y: Minor whitespace cleanup,  remove  redundant
ifdef.

2013-06-24         Arnold D. Robbins     <arnold@skeeve.com>

        * dfa.c (copytoks): Rewrite to call addtok_mb() directly.
Avoids         problems with multibyte characters inside  charac-
ter    sets.            Thanks   to   Steven   Daniels   <steven-
daniels88@gmail.com> for  reporting          the  problem.   Much
thanks  to Mike Haertel <mike@ducky.net> for the         analysis
and fix.

2013-06-24  Eli Zaretskii  <eliz@gnu.org>

        * io.c: Move #include "popen.h" out of  the  HAVE_SOCKETS
condition,          as  this  is needed for non-sockets builds as
well.      See             http://lists.gnu.org/archive/html/bug-
gawk/2013-06/msg00014.html         for the details of the problem
this caused.

2013-06-15         Arnold D. Robbins     <arnold@skeeve.com>

        * io.c: Add ifdefs for VMS so that it will compile again.
        Thanks to Anders Wallin.

2013-06-11         Arnold D. Robbins     <arnold@skeeve.com>

        *  debug.c  (print_lines): Move setting of binary mode to
after all         the messing with the fd. Simplifies code  some.
        *  io.c (srcopen): Rearrange so that can add call to set-
binmode         here too. This fixes the debugger and makes read-
ing source         files a little faster. Thanks again to Corinna
Vinschen.

2013-06-10         Arnold D. Robbins     <arnold@skeeve.com>

        * debug.c (print_lines): Set binary mode so that calcula-
tion of the         byte offsets will be right. Thanks to Corinna
Vinschen for the         direction.

2013-06-10         Arnold D. Robbins     <arnold@skeeve.com>

        * re.c (check_bracket_exp): Remove warning  about  ranges
being         locale dependent, since they aren't anymore.

2013-06-09         Arnold D. Robbins     <arnold@skeeve.com>

        *  io.c  (iop_finish): Change fstat call to fcntl/F_GETFL
per         Eli Z., for Windows.

2013-06-03         Arnold D. Robbins     <arnold@skeeve.com>

        * eval.c (unwind_stack): If exiting,  don't  worry  about
strange stuff         on the stack.

        Unrelated:

        *   awk.h   (init_sockets):   Declare.            *  io.c
(init_io): Remove ifdef around call.

2013-06-01  Eli Zaretskii  <eliz@gnu.org>

        * io.c  (SHUT_RD)  [SD_RECEIVE]:  Define  to  SD_RECEIVE.
        (SHUT_WR)      [SD_SEND]:      Define     to     SD_SEND.
        (SHUT_RDWR)     [SD_BOTH]:     Define     to     SD_BOTH.
        (FD_TO_SOCKET,   closemaybesocket)  [!FD_TO_SOCKET]:  New
macros.           (SOCKET_TO_FD,  SOCKET)  [!SOCKET_TO_FD]:   New
macros.            (PIPES_SIMULATED):   Define  only  for  DJGPP.
        (pipe)  [__MINGW32__]:  Define  to  call  _pipe,   unless
PIPES_SIMULATED             is     defined.             (init_io)
[HAVE_SOCKETS]: Call  init_sockets.           (iop_close,  socke-
topen):  Call  closemaybesocket instead of close.          (redi-
rect) [__MINGW32__]: Call  wait_any  with  a  non-zero  argument.
        (devopen)  [__EMX__  ||  __MINGW32__]: Don't call stat on
network             pseudo-filenames.              (two_way_open)
[HAVE_SOCKETS]: Switch input and output to binary         mode if
appropriate.          (two_way_open) [!PIPES_SIMULATED]: Use  the
__EMX__  code  for  MinGW         as well.          [__MINGW32__]
Call spawnl to invoke $ComSpec and  pass  it  a          suitably
quoted  command line.          (two_way_open) [__MINGW32__]: Wait
only for a specified process         ID.  If  successful,  update
the exit status of the exited process.          Don't use signals
that are undefined on MinGW.          (two_way_open) [!PIPES_SIM-
ULATED]:   Use  the  __EMX__  code  for  MinGW          as  well.
        (min):   Define   only   if    not    already    defined.
        (read_with_timeout)  [__MINGW32__]:  Allow  reading  from
sockets     with             timeout.               (gawk_fclose)
[__MINGW32__]: Close the underlying socket as well.

        * getopt.c: Include stdlib.h for MinGW as well.

2013-05-30         Arnold D. Robbins     <arnold@skeeve.com>

        More profiling fixes:

        *  profile.c (pprint): For Op_in_array, parenthesize sub-
script if         the precedence is lower.  E.g.:   (c  =  tolow-
er(foo))  in ARRAY.          (prec_level): Merge cases for prece-
dence of  5.           (parenthesize):  Simplify,  as  in  3.1.8.
Avoids  stuff  like         `(x == 1 && (z ==2 && (q == 4 && w ==
7)))'.

        Unrelated:

        * io.c (iop_finish): fstat the fd before  closing  it  to
avoid          errors  on  some  operating systems. Thanks to Eli
Zaretskii         for the report.

2013-05-29         Arnold D. Robbins     <arnold@skeeve.com>

        * profile.c (pp_group3): Renamed from  pp_concat.  Change
all  calls.           (is_binary):  Change  return  type to bool.
        (is_scalar):  New  function.           (pp_concat):   New
function     to    handle    concatenation    operator    better.
        (pprint): Call it at case Op_concat. Fix  Op_K_delete  if
multiple         indexes to separate with "][".          General:
Add leading comments as needed.

2013-05-28         Arnold D. Robbins     <arnold@skeeve.com>

        * main.c (main): Add minor hack to not run code if pretty
printing          and undocumented env var GAWK_NO_PP_RUN exists.
        * profile.c (pp_string): Explicitly print  NUL  chars  as
 00.

2013-05-27         Arnold D. Robbins     <arnold@skeeve.com>

        * configure.ac (AM_INIT_AUTOMAKE): Add dist-lzip to quiet
        outside maintainer warnings.

        Unrelated:

        * configure.ac (AC_STRUCT_ST_BLKSIZE): Replaced with call
to         AC_CHECK_MEMBERS.

        Unrelated:

        *  array.c (null_array): Remove the assert and just clear
        symbol->xarray.

2013-05-26         Arnold D. Robbins     <arnold@skeeve.com>

        * getopt.c: For Mac OS  X,  also  include  <stdlib.h>  to
avoid         some compiler warnings.

2013-05-20         Arnold D. Robbins     <arnold@skeeve.com>

        *  gawkapi.h  [FAKE_FD_VALUE]:  Moved  from  here  to ...
        * io.c [FAKE_FD_VALUE]: here.

2013-05-14  Eli Zaretskii  <eliz@gnu.org>

        * io.c (devopen) [__EMX__ || __MINGW32__]: Produce EISDIR
on  MinGW          when  an  attempt to open() a directory fails.
        (two_way_open) [__EMX__ || __MINGW32__]: When  trying  to
open() a         directory fails with EISDIR, assign FAKE_FD_VAL-
UE to the file         descriptor and attributes of  a  directory
to  its mode bits.  This         is needed to support the readdir
extension.

        * gawkapi.h (FAKE_FD_VALUE): New macro, used in io.h  and
in         extension/gawkdirfd.h.

2013-05-09         Arnold D. Robbins     <arnold@skeeve.com>

        * 4.1.0: Release tar ball made.

2013-05-09         Arnold D. Robbins     <arnold@skeeve.com>

        *  awkgram.y (snode): Make it a fatal error to use a reg-
exp constant         as the second argument of index(). Thanks to
Christopher  Durant         <christopher.durant@marquesa.net> and
Brian Kernighan for the report         and the advice.

2013-04-28  Eli Zaretskii  <eliz@gnu.org>

        * io.c (redirect): Remove the HACK that called  close_one
when          errno  was  zero in the MinGW build.  This prevents
failure in         several tests in the test suite, e.g.,  close-
bad.

2013-04-28         Arnold D. Robbins     <arnold@skeeve.com>

        * bootstrap.sh: Fix a comment.

2013-04-24         Arnold D. Robbins     <arnold@skeeve.com>

        * io.c (do_getline_redir): Fix the leading comment.

2013-04-23         Arnold D. Robbins     <arnold@skeeve.com>

        *  main.c  (load_procinfo):  Add PROCINFO entries for API
major         and minor versions.

2013-04-21         Arnold D. Robbins     <arnold@skeeve.com>

        * missing: Update from Automake 1.13.1.

2013-04-18         Arnold D. Robbins     <arnold@skeeve.com>

        * configure.ac: Fix a typo.

2013-04-17         Corinna Vinschen      <vinschen@redhat.com>

        * configure.ac: Remove special casing for cygwin for  li-
biconv         and libintl.

2013-04-16         Arnold D. Robbins     <arnold@skeeve.com>

        * bootstrap.sh: Touch gawk.texi too. Update copyright.

2013-04-16         Arnold D. Robbins     <arnold@skeeve.com>

        *  awkgram.c:  Regenerated  from  bison 2.7.1.          *
command.c: Ditto.          * dfa.h, dfa.c: Minor  edits  to  sync
with  GNU grep.          * gettext.h: Sync with gettext 0.18.2.1.
        * random.h: Remove obsolete __P  macro  and  use.  Update
copyright   year.           *  Makefile.am,  array.c,  builtin.c,
cint_array.c, cmd.h,  debug.c,          eval.c,  ext.c,  field.c,
gawkapi.c,   gawkapi.h,  gettext.h,  int_array.c,          inter-
pret.h, msg.c, node.c, profile.c, re.c,  replace.c,  str_array.c,
        symbol.c: Update copyright year.

        Update to automake 1.13.1:

        *   configure.ac   (AM_INIT_AUTOMAKE):   Update  version.
        * configure, Makefile.in, aclocal.m4, awklib/Makefile.in,
        doc/Makefile.in, test/Makefile.in: Regenerated.

        *  getopt.c, getopt.h, getopt1.c, getopt_int.h: Sync with
GLIBC.

2013-04-14         Arnold D. Robbins     <arnold@skeeve.com>

        * awkgram.y (check_funcs): Fix logic of test  for  called
but          not  defined warning. Thanks to Scott Deifik for the
bug report.

2013-04-02         Arnold D. Robbins     <arnold@skeeve.com>

        *  profile.c  (print_lib_list):  Send  final  newline  to
prof_fp          instead of stdout.  Thanks to Hermann Peifer for
the bug report.

2013-03-27         Arnold D. Robbins     <arnold@skeeve.com>

        * Makefile.am (SUBDIRS): Move  extension  back  into  the
middle  of          the list so that `make check' without a prior
`make' works.

        Unrelated:

        *   main.c   (main):   Move   env_lc   into   ifdef   for
LIBC_IS_BORKED.

2013-03-20         Arnold D. Robbins     <arnold@skeeve.com>

        For systems where libc is borked (MirBSD, maybe others).

        *   dfa.c:   Force  use  of  gawk_mb_cur_max  instead  of
MB_CUR_MAX and make         mbrtowc a macro  that  always  fails.
        (using_utf8):  Force  utf8  to  be  0  if libc borked and
gawk_mb_cur_max         is one.          * main.c (main): If libc
is borked and LC_ALL or LANG exist in the         environment and
are set to "C" or "c", force gawk_mb_cur_max to one.

2013-03-11         Arnold D. Robbins     <arnold@skeeve.com>

        * re.c (check_bracket_exp): Make handling of  embedded  ]
in          regexp  smarter. Thanks to Ed Morton <mortoneccc@com-
cast.net>         for reporting the bug.

2013-03-01         Arnold D. Robbins     <arnold@skeeve.com>

        Don't build extensions if API isn't supported:

        * Makefile.am (SUBDIRS): Move extension directory to last
in   case          building  the  extensions  is  not  supported.
        * configure.ac: Add check for MirBSD and don't  even  try
to run the         checks for DYNAMIC if so.

        Check  for systems (MirBSD) where libc doesn't understand
not         to use UTF-8 for LC_ALL=C.

        * configure.ac  (LIBC_IS_BORKED):  AC_DEFINE  if  needed.
        *   regcomp.c  (init_dfa):  Change  logic  as  needed  if
LIBC_IS_BORKED.

2013-02-28         Arnold D. Robbins     <arnold@skeeve.com>

        Cause profiling / pretty printing to include  a  list  of
        loaded  extensions.  Thanks to Hermann Peifer for the bug
report.

        * awk.h (srcfiles): Add declaration.          * profile.c
(print_lib_list): New function.          (dump_prog): Call it.

2013-02-26         Arnold D. Robbins     <arnold@skeeve.com>

        *  awkgram.y  (expression_list):  In case of error return
the list         instead of NULL so that snode gets something  it
can count.

2013-02-12         Arnold D. Robbins     <arnold@skeeve.com>

        * bisonfix.awk: Comment out code for fixing continued #if
        statements. It is likely not  needed  anymore.  Leave  it
there in         case I'm wrong.

2013-02-06         Arnold D. Robbins     <arnold@skeeve.com>

        *  builtin.c  (printf_common):  Move nargs > 0 check into
assert.          (do_sprintf): Add nargs check and fatal  message
to here.

2013-02-04         Arnold D. Robbins     <arnold@skeeve.com>

        *  main.c (main): Remove undocumented -m option which was
for         compatibility with BWK awk. His awk dropped  it  back
in 2007.

2013-02-03         Arnold D. Robbins     <arnold@skeeve.com>

        * configure.ac: Add Automake test for cross compiling.

2013-01-31         Arnold D. Robbins     <arnold@skeeve.com>

        * regcomp.c, regex.c, regex_internal.c, regexec.c: Update
        copyright years to sync with GLIBC.

        From:               http://www.sourceware.org/ml/libc-al-
pha/2013-01/msg00967.html,              by     Andreas     Schwab
<schwab@suse.de>:

        *  regexec.c  (extend_buffers):  Add  parameter  min_len.
        (check_matching):    Pass    minimum    needed    length.
        (clean_state_log_if_needed):                    Likewise.
        (get_subexp): Likewise.`

2013-01-31         Arnold D. Robbins     <arnold@skeeve.com>

        *  dfa.c:  Include  "dfa.h"  which includes regex.h after
limits.h         so that RE_DUP_MAX gets the correct value. Espe-
cially needed on         OpenVMS. Thanks to Anders Wallin.

        *  main.c (version): Print out API version numbers if DY-
NAMIC.          Helpful also for knowing  if  to  run  the  shlib
tests.

        * configure: Regenerated after change in m4/readline.m4.

2013-01-31         Arnold D. Robbins     <arnold@skeeve.com>

        *  PROBLEMS:  Removed. It is no longer needed.          *
Makefile.am (EXTRA_DIST): Remove PROBLEMS from list.

2013-01-31         Andrew  J.  Schorr      <aschorr@telemetry-in-
vestments.com>

        *  configure.ac:  Remove  TEST_MPFR  conditional added in
last patch.          We will instead test for MPFR capability  by
looking at the output         from gawk --version.

2013-01-27          Andrew  J.  Schorr     <aschorr@telemetry-in-
vestments.com>

        * configure.ac: Add  MPFR  test  for  use  in  test/Make-
file.am.

2013-01-25         Arnold D. Robbins     <arnold@skeeve.com>

        *  awkgram.y  (parms_shadow):  Change  int param to bool.
        * cmd.h (output_is_tty): Sync type with rest of code  (is
bool).            *   dfa.c  (MALLOC):  Undef  first,  for  Irix.
        * Makefile.am (LDADD): Use LIBREADLINE  and  LIBMPFR  in-
stead  of         automake substitutions.          * configure.ac
(AC_INIT): Version bump.          (GAWK_CHECK_READLINE):  Renamed
from GNUPG_CHECK_READLINE.

2013-01-23         Arnold D. Robbins     <arnold@skeeve.com>

        *  awk.h  (list_functions):  Change  parameter  to  bool.
        * symbol.c  (list_functions):  Ditto.           (get_sym-
bols):  Change  sort  parameter  to bool. Additional         code
cleanup.

2013-01-22         Arnold D. Robbins     <arnold@skeeve.com>

        * symbol.c (get_symbols): Reset count after each loop  to
only          sort  the actual items retrieved. Thanks to Hermann
Peifer (by         way of Andrew Schorr) for reporting  the  bug.
Also add some         commentary and fix function name in emalloc
calls.

2013-01-20         Arnold D. Robbins     <arnold@skeeve.com>

        * re.c (regexflags2str): New routine.          (resetup):
If do_intervals, also turn on RE_NO_BK_BRACES.          Thanks to
Yan Lei <yanl.fnst@cn.fujitsu.com> for the         bug report.

2013-01-18         Arnold D. Robbins     <arnold@skeeve.com>

        Fix a problem with include ordering to get ptrdiff_t def-
inition,          showed  up  on Debian Lenny. Reported by Manuel
Collado.          Fix brought over from grep.

        *  dfa.h:  Include   regex.h   and   stddef.h   directly.
        * dfa.c: Adjust includes.

2013-01-11         John Haque            <j.eh@mchsi.com>

        *  awk.h  (do_mpfr_rshift):  Renamed  from do_mpfr_rhift.
        * awkgram.y (do_mpfr_rshift): Renamed from do_mpfr_rhift.
        *   mpfr.c   (_tz1,   _tz2,  _mpz1,  _mpz2,  mpz1,  mpz2,
get_bit_ops,                   free_bit_ops):            Removed.
        (init_mpfr): Remove calls to mpz_init.          (get_int-
val,  free_intval):  New   functions.            (do_mpfr_rshift,
do_mpfr_lshift):  Rework code.          (do_mpfr_and, do_mpfr_or,
do_mpfr_xor): Accept two or more arguments         to match regu-
lar functions.

2013-01-11         Arnold D. Robbins     <arnold@skeeve.com>

        *  bisonfix.awk:  Adjust  ARGV / ARGC to force reading of
standard         input; apparently needed for Mac OS X. Thanks to
Akim Demaille         for the report.

2013-01-06         Arnold D. Robbins     <arnold@skeeve.com>

        *  io.c  (redirect,  two_way_open): Set the name field in
the         awk_input_buf_t and awk_output_buf_t  structures,  as
needed.          Thanks to Manuel Collado for the report.

2013-01-05         Arnold D. Robbins     <arnold@skeeve.com>

        *  regex_internal.h  (struct  re_dfa_t):  Restore  ifdefs
around          __libc_lock_define,  they  really  were   needed.
Bleah.

2013-01-01         Arnold D. Robbins     <arnold@skeeve.com>

        Sync with GLIBC regex files.

        *   regex_internal.h  (struct  re_dfa_t):  Remove  ifdefs
around         __libc_lock_define since it's already  defined  to
empty    in    non-LIBC            case.            *   regexec.c
(check_node_accept_bytes):   Restore   decl   with    use    from
        GLIBC code since this is LIBC case.

2012-12-27         Arnold D. Robbins     <arnold@skeeve.com>

        *  builtin.c  (do_print, do_printf): Use output_fp as de-
fault         output for print/printf only if running  under  the
debugger.           Otherwise  use stdout as Brian, Peter, and Al
intended.

2012-12-25         Arnold D. Robbins     <arnold@skeeve.com>

        Remove sym-constant from API after discussions with  John
        Haque and Andrew Schorr.

        *  gawkapi.h  (api_sym_constant):  Removed  field  in API
struct.            (sym_constant):   Remove   macro.            *
gawkapi.c  (set_constant,  api_sym_update, api_sym_constant): Re-
moved.          (sym_update_real): Renamed  to  api_sym_update().
is_const parameter         removed and code adjusted.

2012-12-24         Arnold D. Robbins     <arnold@skeeve.com>

        * 4.0.2: Release tar ball made.

2012-12-23         John Haque      <j.eh@mchsi.com>

        *  eval.c  (r_get_lhs):  Node_array_ref.  If  original is
Node_var,         don't assign null-string as  value.           *
ext.c (get_argument): Node_array_ref. Check if already a scalar.

2011-12-23         John Haque      <j.eh@mchsi.com>

        *   awkgram.y   (is_deferred_variable):   New   function.
        (func_install): Call it.          * eval.c (r_interpret):
Op_push_arg. Check for uninitialized scalar.

2012-12-23         Arnold D. Robbins     <arnold@skeeve.com>

        *  awkgram.y  (tokentab):  Whitespace  fix for "include".
        * builtin.c (printf_common): Do a fatal error if no  args
to printf()         or sprintf().

2012-12-19         Arnold D. Robbins     <arnold@skeeve.com>

        * bootstrap.sh: Touch extension/aclocal.m4 also.

        Unrelated: Extend input parser API:

        *  awk.h  (IOBUF):  Remove  read_func pointer.          *
gawkapi.h (awk_input_buf_t): Move it  to  here.           *  io.c
(iop_alloc, get_a_record, get_read_timeout): Adjust code.

        Unrelated:  Make sure that variables like NF, NR, FNR are
        accessable correctly both through SYMTAB and through API.

        *  gawkapi.c  (api_sym_lookup):  Call  update_global_val-
ues().          (api_sym_lookup_scalar): Ditto.          * inter-
pret.h (Op_subscript, Op_subscript_lhs): Ditto.          * main.c
(update_global_values): Adjust comment.

        Unrelated:  Fix  --disable-lint  so  that everything com-
piles.

        * main.c (main): Move case label inside ifdef.          *
awkgram.y  (isnoeffect):  Add  ifdefs  around  declaration,  use,
        and function body.

        Unrelated: Restore building with tcc.

        * awk.h (AFUNC): Move to array.c which is the only  place
its used.          (ainit_ind, atypeof_ind, etc.): New macros for
use in array.c         * array.c (AFUNC): Change to use  F##_ind.
Works  with  tcc  and other         compilers.          * config-
ure.ac: Only add -export-dynamic flag if compiling with gcc.

2012-12-18         Andrew  J.  Schorr      <aschorr@telemetry-in-
vestments.com>

        *  gawkapi.c (sym_update_real): If setting a scalar vari-
able that exists         already in an undefined state with  type
set  to Node_var_new, we must         update the type to Node_var
if the new value is not undefined.

2012-12-18         Arnold D. Robbins     <arnold@skeeve.com>

        * awkgram.y (tokentab): "extension" needs  to  be  inside
ifdef DYNAMIC.          Thanks to Anders Wallin for finding this.

2012-12-16         Arnold D. Robbins     <arnold@skeeve.com>

        *   debug.c   (do_set_var):   Fix  last  remaining  `*as-
soc_lookup() = x'.

2012-12-15         Arnold D. Robbins     <arnold@skeeve.com>

        Infrastructure Updates:

        *  awkgram.c,  command.c:  Regenerated  with  bison  2.7.
        *  config.guess,  config.sub,  depcomp:  Updated from au-
tomake 1.12.6.

2012-12-09         Arnold D. Robbins     <arnold@skeeve.com>

        Clean up BINMODE to use symbolic values.

        *  awk.h  (enum  binmode_values):  New  enum.           *
eval.c   (set_BINMODE):   Use  them.           *  io.c  (binmode,
close_rp, gawk_popen): Ditto.          *  main.c  (main):  Ditto.
        * builtin.c (do_system): Ditto.

        Unrelated:

        *  configure.ac:  Look  for  posix_openpt          * io.c
(two_way_open):   Use    posix_openpt    if    it's    available.
        Thanks  to  Christian Weisgerber <naddy@mips.inka.de> for
        the changes.

        Also unrelated:

        * regex.c: Don't include <sys/param.h> on VMS. Thanks  to
        Anders Wallin.

        Also unrelated:

        *  ext.c  (is_letter, is_identifier_char): New functions.
Don't use         <ctype.h> functions since those could  rely  on
the  locale.           (make_builtin): Adjust test for valid name
to call the new         functions and  return  false  instead  of
throwing  a fatal error.          (make_old_builtin): Adjust test
for valid name to call the new         function.          * awk.h
(is_identchar):   Move   from   here,  ...           *  awkgram.y
(is_identchar): ... to here. This is safe, since         the  lo-
cale is C during parsing the program.

        Also  unrelated:  Make  all checks for bitflags being set
consistent         in case we should wish to switch them to macro
calls:

        *  awkgram.y,  builtin.c,  cint_array.c, debug.c, eval.c,
gawkapi.c,         int_array.c, io.c, mpfr.c, node.c,  profile.c,
str_array.c: Fix         as needed.

2012-12-07         Arnold D. Robbins     <arnold@skeeve.com>

        *  awkgram.y  (tokentab): `fflush()' is now in POSIX, re-
move the         RESX flag. This was the last use, so delete  the
flag.          (yylex): Don't check RESX.

        Thanks  to  Nathan  Weeks <weeks@iastate.edu> for helping
make this         happen.

2012-12-01         Arnold D. Robbins     <arnold@skeeve.com>

        * interpret.h:  For  op_assign_concat,  if  both  strings
        have  WSTRCUR,  then  do the realloc() and append for the
        wide string too.  Thanks to Janis Papanagnou         <ja-
nis_papanagnou@hotmail.com>     for     the     discussion     in
        comp.lang.awk.

2012-11-30         Arnold D. Robbins     <arnold@skeeve.com>

        * regcomp.c, regex.c, regex_internal.h,  regexec.c:  Sync
        with GLIBC.  Why not.

        *  gawkapi.c  (awk_bool_t):  Change  into  an  enum  with
awk_false and         awk_true values.

2012-01-30         Andrew  J.  Schorr      <aschorr@telemetry-in-
vestments.com>

        Further cleanups of macros in awk.h

        *  awk.h  (_r, _t): Remove declarations.          (unref,
m_force_string): Remove macros.          (r_unref): Move declara-
tion.               (r_force_string):     Remove     declaration.
        (DEREF, force_string, force_number,  unref):  Now  inline
functions.           (POP_STRING,  TOP_STRING):  Back  to macros.
        * eval.c (_t): Remove definition.          * main.c (_r):
Remove definition.          * node.c (r_force_string): Remove.

2012-11-27         Arnold D. Robbins     <arnold@skeeve.com>

        *  builtin.c  (do_fflush):  Make  fflush() and fflush("")
both         flush everything. See the comment in the code.

2012-11-26         Arnold D. Robbins     <arnold@skeeve.com>

        * awk.h (Node_old_ext_func,  Op_old_ext_func):  New  enum
values.          * configure.ac: Use -export-dynamic if supported
for old extension         mechanism.          *  eval.c  (nodeyt-
pes):    Add    Node_old_ext_func.             (optypetab):   Add
Op_old_ext_func.          * ext.c  (make_old_ext_builtin):  "New"
function.               *      interpret.h:      Special     case
Op_old_ext_builtin.  Add  checks  for          Node_old_ext_func.
        * msg.c: Adjust placement of a comment.

2012-05-02         John Haque      <j.eh@mchsi.com>

        *  str_array.c (str_copy): Initialize next pointer in the
linked  list          to  avoid  memory  corruption.            *
int_array.c (int_copy): Ditto.

2012-04-21         John Haque      <j.eh@mchsi.com>

        Shutdown routine for a dynamic extension.

        *  awk.h (SRCFILE): New field fini_func.          * ext.c
(load_ext):  Takes  an  additional  argument  to  look   up   and
        save   the   clean   up   routine   in   SRCFILE  struct.
        (INIT_FUNC, FINI_FUNC): Defines for default init and fini
routine          names.           (do_ext):  Use  default for the
name of the init or fini routine if         one is not  supplied.
Adjust  call  to load_ext().          (close_extensions): Execute
fini  routines.            *   interpret.h   (Op_at_exit):   Call
close_extensions().             *   msg.c   (gawk_exit):   Ditto.
        * debug.c (close_all): Ditto.          *  main.c  (main):
Adjust call to load_ext().          * awkgram.y (tokentab): Spec-
ify 2nd and 3rd optional arguments          for  the  extension()
built-in.

        Unrelated:

        *  interpret.h  (Op_arrayfor_init):  Use assoc_length for
array size.

2012-04-19         John Haque      <j.eh@mchsi.com>

        Enhanced array interface to support transparent implemen-
tation         using external storage and ...

        *  awk.h (astore): Optional post-assignment store routine
for         array subscripts.          (Op_subscript_assign): New
opcode  to support the store routine.          (alength): New ar-
ray interface routine for array length.           (assoc_length):
New  macro.           (assoc_empty):  Renamed  from  array_empty.
        * awkgram.y (snode): Append Op_subscript_assign opcode if
        (g)sub  variable  is  an array element.          (mk_get-
line): Same for getline variable.          (mk_assignment):  Same
if  assigning  to  an array element.          * field.c (set_ele-
ment):  Call  store  routine  if  needed.           *   builtin.c
(do_match):  Ditto.           (do_length): Use length routine for
array size.          * symbol.c (print_vars):  Ditto.           *
array.c  (null_length):  Default function for array length inter-
face.          (asort_actual): Call  store  routine  if  defined.
        (asort_actual,  assoc_list): Use length routine for array
size.          (null_array_func): Add length  and  store  routine
entries.             *    str_array.c   (str_array_func):   Same.
        *  cint_array.c   (cint_array_func):   Same.            *
int_array.c  (int_array_func):  Same.           * eval.c (optype-
tab): Add Op_subscript_assign.          * profile.c (pprint): Add
case   Op_subscript_assign.           *  interpret.h  (set_array,
set_idx): New variables to keep track         of an array element
with  store  routine.           (Op_sub_array,  Op_subscript_lhs,
Op_store_sub, Op_subscript_assign):         Add  code  to  handle
array  store routine.          * debug.c (print_symbol, print_ar-
ray,     cmp_val,     watchpoint_triggered,              initial-
ize_watch_item): Use length routine for array size.

        *   awk.h   (assoc_kind_t):  New  typedef  for  enum  as-
soc_list_flags.          (sort_context_t): Renamed from SORT_CON-
TEXT.           *  array.c  (asort_actual,  assoc_sort):  Adjust.
        * cint_array.c (cint_list, tree_list, leaf_list): Adjust.
        *  int_array.c (int_list): Adjust.          * str_array.c
(str_list): Adjust.

2012-04-18         John Haque      <j.eh@mchsi.com>

        * awk.h (atypeof, AFUNC): New macros.          (afunc_t):
Renamed  typedef from array_ptr.          * array.c (register_ar-
ray_func, null_lookup): Use AFUNC macro         instead of  hard-
coded  index  for array functions.          (asort_actual): Unref
null array elements before  overwriting.           (force_array):
Renamed   from  get_array.           (null_array):  Renamed  from
init_array. Also initialize flags to  0.           (array_types):
Renamed  from  atypes.           (num_array_types):  Renamed from
num_atypes.           *  interpret.h   (r_interpret):   In   case
Op_sub_array,  unref  null  array element.          * str_array.c
(str_array_init):  Reworked  for  (re)initialization  of   array.
        *   int_array.c   (int_array_init):   Ditto.            *
cint_array.c (cint_array_init): Ditto.

2012-11-24         Arnold D. Robbins     <arnold@skeeve.com>

        Directory cleanup.

        * TODO.xgawk, FUTURES: Merged into TODO.          * TODO:
More stuff added.          * Makefile.am (EXTRA_DIST): Updated.

2012-11-22         Arnold D. Robbins     <arnold@skeeve.com>

        Cleanup of awk.h.

        *  array.c  (r_in_array): Removed.          * awk.h (MAL-
LOC_ARG_T): Replaced with size_t  everywhere.           (S_ISREG,
setsid):   Moved   to  io.c.           (__extension__):  Removed.
        (INT32_BIT): Moved to cint_array.c.          (_t): Always
declare.           (DO_LINT_INVALID,  et al): Moved into an enum.
        (POP_ARRAY, POP_PARAM, POP_SCALAR,  TOP_SCALAR,  dupnode,
in_array):              Moved      into     inline     functions.
        (force_number,         force_string):         Simplified.
        (ZOS_USS):  Remove undef of DYNAMIC, it's handled in con-
figure.ac.          * io.c  (S_ISREG,  setsid):  Moved  to  here.
        *  cint_array.c  (INT32_BIT):  Moved  to here.          *
eval.c (_t): Always define.          * protos.h: Use  size_t  di-
rectly instead of MALLOC_ARG_T.

        Unrelated:

        *  gawkapi.h:  Add  `awk_' prefix to structure tags where
they         were missing.  Document the  full  list  of  include
files needed.

2012-11-14         Arnold D. Robbins     <arnold@skeeve.com>

        *  io.c (do_find_source): On VMS, don't add the `/' sepa-
rator.          Thanks to Anders Wallin.

        MPFR minor cleanup:

        * awk.h (mpfr_unset): Declare  new  function.           *
mpfr.c  (mpfr_unset):  New function.          * node.c (r_unref):
Call  it  instead   of   inline   code.            *   gawk_api.c
(api_sym_update_scalar): Call it instead of inline code.

2012-11-13         Arnold D. Robbins     <arnold@skeeve.com>

        *  symbol.c  (get_symbols):  Check type, not vname. Keeps
        valgrind happy. Thanks to Andrew Schorr for noticing  the
problem.

2012-11-10         Arnold D. Robbins     <arnold@skeeve.com>

        *  Update  to  bison  2.6.5.  Various  files regenerated.
        * io.c (find_source): Add a default value  for  SHLIBEXT.
        (read_with_timeout): For VMS also, just use read().

2012-11-10         John Haque      <j.eh@mchsi.com>

        *  int_array.c  (int_copy):  Initialize  next  pointer of
newchain  to  null.           *  eval.c  (eval_condition):  Force
string context for an integer used         as array index.

2012-11-10         Arnold D. Robbins     <arnold@skeeve.com>

        *     gawkapi.c     (api_add_ext_func,    api_awk_atexit,
api_clear_array,           api_create_array,    api_create_value,
api_register_ext_version,            api_release_value,   api_up-
date_ERRNO_string,   node_to_awk_value,           remove_element,
run_ext_exit_handlers):  Add null pointer checks.          Every-
where: Add / fixup leading comments.

        * interpret.h (Op_store_sub): If assigning to  an  unini-
tialized  variable         through SYMTAB, change it to Node_var.
Add explanatory comments.          * symbol.c  (get_symbol):  Ra-
tionalized. Skip non-variables in SYMTAB.

2012-11-04         Arnold D. Robbins     <arnold@skeeve.com>

        * gawkapi.h: Minor documentation edit.

2012-10-31         Arnold D. Robbins     <arnold@skeeve.com>

        *  awkgram.y (want_regexp): Use as a bool, not as an int.
        * field.c: Fix a comment.          * gawkapi.h: Add  com-
ment  to  include  <errno.h>.          * symbol.c (load_symbols):
``No automatic  aggregate  initialization.''           Here  too.
Sigh again.

        * gawkapi.h: Minor documentation edits.

2012-11-27         Arnold D. Robbins     <arnold@skeeve.com>

        *  builtin.c  (do_fflush):  Make  fflush() and fflush("")
both         flush everything. See the comment in the code.

2012-10-28         Arnold D. Robbins     <arnold@skeeve.com>

        * Update to bison 2.6.4. Various files regenerated.

2012-10-27         Arnold D. Robbins     <arnold@skeeve.com>

        *  gawkapi.h:  Continuing  the  minor  formatting  /  doc
cleanups.

2012-10-26         Arnold D. Robbins     <arnold@skeeve.com>

        *  gawkapi.h:  Continuing  the  minor  formatting  /  doc
cleanups.

2012-10-24         Arnold D. Robbins     <arnold@skeeve.com>

        * gawkapi.h: Still more minor formatting / doc cleanups.

2012-10-23         Arnold D. Robbins     <arnold@skeeve.com>

        * gawkapi.h: More minor formatting / doc cleanups.

2012-10-21         Arnold D. Robbins     <arnold@skeeve.com>

        Fixes for z/OS from Dave Pitts.

        * awk.h (assoc_list_flags): No  trailing  comma  on  last
enum   value.            *   gawkapi.h   (awk_valtype_t):  Ditto.
        * symbol.c (lookup): ``No automatic aggregate initializa-
tion.'' Sigh.

        Unrelated:

        * gawkapi.h: Minor formatting / doc cleanups.

2012-10-19         Arnold D. Robbins     <arnold@skeeve.com>

        If  SYMTAB  is  used,  make sure ENVIRON and PROCINFO get
loaded too.

        * awkgram.y (process_deferred):  New  function.  Call  it
when       program               is       completely      parsed.
        (symtab_used): New variable.          (variable): Set  it
to  true if SYMTAB is looked up.          * main.c (load_environ,
load_procinfo): Make sure the routines  are          only  called
once.

        Unrelated fixes:

        * awkgram.y (yylex): Check continue_allowed and break_al-
lowed as         soon as they are seen in the scanner; the  rules
that  check  them          can not be reduced until after a token
that allows them is seen,         leading to errors at  execution
time.          * interpret.h (Op_K_break, Op_K_continue, Op_jmp):
Add assertion         that pc->target_jmp is not NULL.

        * symbol.c (lookup): Correct a comment.

2012-10-14         Arnold D. Robbins     <arnold@skeeve.com>

        *  gawkapi.h  (IOBUF_PUBLIC):  Renamed   awk_input_buf_t.
        (struct    iobuf_public):   Renamed   struct   awk_input.
        * awk.h: Adjust.

2012-10-13         Arnold D. Robbins     <arnold@skeeve.com>

        * Update to Automake 1.12.4. Various files regenerated.

2012-10-11         Arnold D. Robbins     <arnold@skeeve.com>

        *  awk.h  (dup_ent):  New  member  for   Node_param_list.
        * symbol.c (install): For parameters, if this is a dupli-
cate, chain         it off the original using the dup_ent  point-
er.           (remove_params):  If there's a duplicate, remove it
from the list.

        * awk.h: Fix flags to have unique numeric values. Oops.

2012-10-10         Arnold D. Robbins     <arnold@skeeve.com>

        * gawkapi.h: Add  considerably  more  documentation.  Re-
arrange  order          of  functions  in the struct to make more
sense, grouping related         functions together in a more log-
ical  order.           *  gawkapi.c: Adjust as needed.          *
ext.c (make_builtin): Adjust for name change in struct member.

2012-10-05         Arnold D. Robbins     <arnold@skeeve.com>

        * mbsupport.h: Add a bunch of undefs for z/OS.

2012-10-04         Arnold D. Robbins     <arnold@skeeve.com>

        * TODO.xgawk: Update.          *  awk.h  (make_str_node):
Removed   macro.            (make_string):   Modified   to   call
make_str_node.              (r_make_str_node):     Renamed     to
make_str_node.           *  gawkapi.c: Changed r_make_str_node to
make_str_node everywhere.          * node.c (make_str_node):  Re-
named from make_str_node.

        Update to automake 1.12.4.

        *  Makefile.in, aclocal.m4, awklib/Makefile.in, doc/Make-
file.in,           extension/Makefile.in,   extension/aclocal.m4,
test/Makefile.in:         Regenerated.

        *  interpret.h  (Op_Subscript):  Added  lint warnings for
FUNCTAB         and SYMTAB.

2012-10-02         Arnold D. Robbins     <arnold@skeeve.com>

        * awk.h (func_table): Declare.          *  awkgram.y:  If
do_posix  or  do_traditional,  then  check  for         delete on
SYMTAB. Add check for delete on FUNCTAB, also.          *  inter-
pret.h  (Op_Subscript):  For  FUNCTAB,  return  the  element name
        as its value too.  Avoids lots of  weirdness  and  allows
indirect  calls          after  assignment from FUNCTAB["foo"] to
work.          (Op_store_sub): Disallow assignment to elements of
FUNCTAB.           (Op_indirect_func_all): Turn assert into check
and fatal error.           *  symbol.c  (func_table):  No  longer
static.           (lookup):  If  do_posix or do_traditional, skip
the global table.          (release_all_vars):  Clear  func_table
too.

2012-09-25         Arnold D. Robbins     <arnold@skeeve.com>

        First cut at SYMTAB and FUNCTAB. This does the following:
        - Change  symbol  table  handling  to  use  gawk  arrays.
        - Store symbols in SYMTAB array and allow indirect access
          through SYMTAB to variables, both getting and  setting.
        -  List  function names in FUNCTAB indexes; Values cannot
be           used at the moment.          - No documentation yet.

        * awk.h (Node_hashnode,  hnext,  hname,  hlength,  hcode,
hvalue):             Removed,     not     needed     any    more.
        (init_symbol_table,  symbol_table):   Add   declarations.
        *  awkgram.y:  Disallow delete on SYMTAB, fix warning for
tawk         extension if traditional.          *  eval.c  (node-
types):  Remove  Node_hashnode  element.           *  interpret.h
(Op_subscript,    Op_store_sub):    Handle    SYMTAB    and    go
        through  to  the  actual value.          * main.c (main):
Init Nnull_string earlier. Add  call  to          init_symbol_ta-
ble().          * profile.c (pp_str, pp_len): Change definitions.
        (pp_next): New macro.          (pp_push, pp_pop):  Adjust
uses.           *  symbol.c (variables): Removed.          (glob-
al_table,  param_table,  func_table,  symbol_table,           in-
stalling_specials): New variables.          (lookup, make_params,
install_params, remove_params,  remove_symbol,          make_sym-
bol,   install,   get_symbols,  release_all_vars,  append_symbol,
        release_symbols, load_symbols):  Rework  logic  consider-
ably.          (init_symbol_table): New function.

2012-09-23         Arnold D. Robbins     <arnold@skeeve.com>

        `delete   array'   and   `nextfile'  are  now  in  POSIX.
        Thanks  to  Nathan  Weeks  <weeks@iastate.edu>  for   the
        initiative and letting us know about it.

        *  awkgram.y: Make the right code changes for `delete ar-
ray'         and `nextfile'.          (tokentab):  Set  flags  to
zero for nextfile.

2012-09-19         Arnold D. Robbins     <arnold@skeeve.com>

        *  symbol.c  (load_symbols):  Zero out the new node. Pre-
vents assertion         failure on PPC Mac OS X.

2012-09-14         Arnold D. Robbins     <arnold@skeeve.com>

        Allow read-only access to built-in variables from  exten-
sions.

        *  awk.h  (NO_EXT_SET):  New  flag.           * gawkapi.c
(api_sym_lookup,   api_sym_update_real):   Set   flag   if    off
        limits   variable   instead  of  failing.  Adjust  logic.
        (api_sym_update_scalar,            api_set_array_element,
api_del_array_element,          api_release_flattened_array): Ad-
just logic.          * gawkapi.h: Adjust documentation.

        Provide PROCINFO["identifiers"]. Undocumented for now.

        * awk.h (load_symbols): Add declaration.          *  awk-
gram.y  (variable):  Adjust comment formatting.          * main.c
(main): Call load_symbols().          * symbol.c  (load_symbols):
New function.

2012-09-13         Arnold D. Robbins     <arnold@skeeve.com>

        *  configure.ac: Determination of DYNAMIC adjusted. Hope-
fully is         smarter for z/OS.

2012-09-13         Dave Pitts            <dpitts@cozx.com>

        * awk.h: Add defines for z/OS for newer types.

2012-08-31         Arnold D. Robbins     <arnold@skeeve.com>

        * gawkapi.c: Wrap various bits in #ifdef DYNAMIC so  that
        gawk will compile on systems without dynamic loading.

2012-08-24         Arnold D. Robbins     <arnold@skeeve.com>

        Add  version  facility  to  API. Thanks to Manuel Collado
        for the idea.

        * awk.h (print_ext_versions): Declare.          Rearrange
includes and decls to make more sense.          * gawkapi.h (reg-
ister_ext_version): New API.           (dl_load_func):  Add  code
for  ext_version.          * gawkapi.c (api_register_ext_version,
print_ext_versions):          New  functions.           *  main.c
(do_version):  New  variable.           (optab):  Set it for -v /
--version.          (main): Set it in arg  parsing  switch.  Call
version() after the         extensions have been loaded.

2012-08-22         Arnold D. Robbins     <arnold@skeeve.com>

        Add  output  wrapper  and  two-way processor to extension
API.

        * awk.h (struct redirect): Replace  output  FILE  *  with
awk_output_buf_t.             (register_output_wrapper,    regis-
ter_two_way_processor): Declare.          * builtin.c  (efwrite):
Adjust  logic  to use rp->output data and         functions if rp
is  not  NULL.  Remove   redundant   declaration   of   function.
        (do_fflush,  do_printf, do_print, do_print_rec): Same ad-
justment.          * ext.c (make_builtin): Adjust error messages.
        *         gawkapi.c         (api_register_output_wrapper,
        api_register_two_way_processor):      New      functions.
        (sym_update_real):  Adjust  code  formatting.           *
gawkapi.h  (awk_input_parser_t):  Make  next  pointer  awk_const.
        (awk_output_buf_t, awk_two_way_processor_t): New structs.
        (api_register_output_wrapper,   api_register_two_way_pro-
cessor): New APIs.          (dl_load_func): Allow for empty func-
tion table (NULL elements).          * io.c (find_output_wrapper,
init_output_wrapper,   find_two_processor,           gawk_fwrite,
gawk_ferror,   gawk_fflush,    gawk_fclose):    New    functions.
        (redirect): Call init_output_wrapper, find_output_wrapper
as needed.          Adjust use of rp->fp to rp->output.fp and al-
so  function  calls.           (close_rp, close_redir, flush_io):
Same adjustment.          (two_way_open): Same  adjustment.  Call
find_two_way_processor, and         find_output_wrapper, as need-
ed.

2012-08-17         Arnold D. Robbins     <arnold@skeeve.com>

        * Update infrastructure: Automake 1.12.3 and bison 2.6.2.

2012-08-15         Arnold D. Robbins     <arnold@skeeve.com>

        * dfa.c: Sync w/GNU grep.

2012-08-12         Arnold D. Robbins     <arnold@skeeve.com>

        * gawkapi.h: Make the versions enum constants instead  of
defines.

2012-08-11          Andrew  J.  Schorr     <aschorr@telemetry-in-
vestments.com>

        * awkgram.y (add_srcfile): It is now  a  fatal  error  to
load  the          same  file  with  -f  and  -i  (or  @include).
        * TODO.xgawk: Update to reflect this change.

2012-08-10         Arnold D. Robbins     <arnold@skeeve.com>

        * FUTURES, TODO.xgawk: Updates.

2012-08-08         Arnold D. Robbins     <arnold@skeeve.com>

        * configure.ac: Add -DNDEBUG to remove asserts if not de-
veloping.

        *  gawkapi.h: Document how to build up arrays.          *
gawkapi.c (api_sym_update): For an array,  pass  the  new  cookie
        back out to the extension.

        *  awk.h  (IOBUF):  Move  struct  stat into IOBUF_PUBLIC.
        (os_isreadable):  Change   to   take   an   IOBUF_PUBLIC.
        *   gawkapi.h   (IOBUF_PUBLIC):   Received  struct  stat.
        (INVALID_HANDLE): Moves to here.          * io.c (iop_al-
loc):  Stat  the  fd and fill in stat buf.          (iop_finish):
Use passed in stat info.

2012-08-05         Arnold D. Robbins     <arnold@skeeve.com>

        * README.git: More stuff added.

2012-08-01         Arnold D. Robbins     <arnold@skeeve.com>

        * io.c (iop_finish): New function.           (iop_alloc):
Add  errno_val parameter. Move code into iop_finish.          Add
large explanatory  leading  comment.           (after_beginfile):
Rework  logic.  Check  for input parser first, then         check
for invalid iop.          (nextfile): Organize code better.  Call
iop_alloc  then  iop_finish.          (redirect): Call iop_alloc,
find_input_parser,  iop_finish.            (two_way_open):   Call
iop_alloc,  find_input_parser, iop_finish.          (gawk_popen):
Call iop_alloc, find_input_parser, iop_finish.          (find_in-
put_parser):  Set  iop->valid  if  input  parser  takes  control.
        (get_a_record): Rework setting RT to use macros.

2012-07-29         Andrew  J.  Schorr      <aschorr@telemetry-in-
vestments.com>

        *  awk.h  (set_RT_to_null,  set_RT):  Removed.          *
gawkapi.h (api_set_RT): Removed.          (get_record): Signature
changed    in   input   parser   struct.            *   gawkapi.c
(api_set_RT): Removed.          * io.c (set_RT_to_null,  set_RT):
Removed.          (get_a_record): Adjustments for new API for in-
put parser.

2012-07-29         Arnold D. Robbins     <arnold@skeeve.com>

        *    awk.h    (os_isreadable):    Adjust     declaration.
        (struct  iobuf):  Add new member `valid'.          * io.c
(iop_alloc): Remove do_input_parsers parameter, it's          al-
ways  true.  Adjust  logic  to set things to invalid if could not
        find an  input  parser.           (after_beginfile):  Use
valid  member  to  check  if iobuf is valid.          Don't clear
iop->errcode.          (nextfile): Adjust logic to clear  errcode
if  valid is true and         also to update ERRNO.          (re-
direct): Check iop->valid and  cleanup  as  necessary,  including
        setting     ERRNO.              (two_way_open):    Ditto.
        (gawk_popen): Ditto.          (devopen): Remove check for
directory.

2012-07-27          Andrew  J.  Schorr     <aschorr@telemetry-in-
vestments.com>

        * io.c (find_input_parser): Issue a warning if  take_con-
trol_of fails.

2012-07-27         Arnold D. Robbins     <arnold@skeeve.com>

        *  awk.h  (set_RT):  Change  to  take a NODE * parameter.
        * io.c (set_RT): Change  to  take  a  NODE  *  parameter.
        * gawkapi.h: Change open hook to input parser in comment.
        * gawkapi.c (api_set_RT): Adjust call to set_RT.

2012-07-26         Arnold D. Robbins     <arnold@skeeve.com>

        *  awk.h  (set_RT_to_null,  set_RT):  Declare  functions.
        (os_isreadable):   Declare   function.            *  io.c
(set_RT_to_null, set_RT):  New  functions.           (iop_close):
Init  ret to zero.          * gawkapi.c (api_register_input_pars-
er): Check for null pointer.          (api_set_RT): New function.
        * gawkapi.h (api_set_RT): New function.

2012-07-26          Andrew  J.  Schorr     <aschorr@telemetry-in-
vestments.com>

        * gawkapi.h (IOBUF_PUBLIC): Document the  get_record  and
close_func           API.            (awk_input_parser_t)  Change
can_take_file argument to const, and          document  the  API.
        *  io.c (get_a_record): Document that the caller initial-
izes *errcode         to 0, and remote the test for non-NULL  er-
rcode.

2012-07-26          Andrew  J.  Schorr     <aschorr@telemetry-in-
vestments.com>

        * gawkapi.c (api_sym_update_scalar): Fix some minor bugs.
Was          not  updating  AWK_NUMBER  when  valref  !=  1.  And
strings were not         freeing MPFR values.

2012-07-25         Arnold D. Robbins     <arnold@skeeve.com>

        Start refactoring of IOBUF handling and turn "open hooks"
        into "input parsers".

        *  awk.h (IOP_NOFREE_OBJ): Flag removed.          (regis-
ter_input_parser): Renamed  from  register_open_hook.           *
ext.c  (load_ext):  Make  sure  lib_name  is not NULL.          *
gawk_api.c     (api_register_input_parser):     Renamed      from
        api_register_open_hook.          * gawk_api.h (api_regis-
ter_input_parser): Renamed  from          api_register_open_hook.
Rework  structure to have "do you want it"         and "take con-
trol of it" functions.          * io.c (iop_alloc): Remove  third
argument  which  is IOBUF pointer.          Always malloc it. Re-
move use of IOP_NOFREE_OBJ everywhere.          (find_input_pars-
er):  Renamed from find_open_hook.          (nextfile): Don't use
static IOBUF.          (iop_close): Call close_func  first.  Then
close  fd  or  remap it         if it's still not INVALID_HANDLE.
        (register_input_parser): Renamed from register_open_hook.
        Use  a  FIFO  list and check if more than one parser will
accept the         file. If so, fatal error.

2012-07-25         Andrew  J.  Schorr      <aschorr@telemetry-in-
vestments.com>

        *  configure.ac:  Instead  of  using acl_shlibext for the
shared library         extension, define our own  variable  GAWK-
LIBEXT  with  a  hack  to  work          correctly  on  Mac OS X.
        * Makefile.am (SHLIBEXT): Use the value of GAWKLIBEXT in-
stead of         acl_shlibext.

2012-07-24         Arnold D. Robbins     <arnold@skeeve.com>

        * configure.ac: Add crude but small hack to make plug-ins
work         on Mac OS X.

2012-07-20         Arnold D. Robbins     <arnold@skeeve.com>

        * gawkapi.h: Rework table to not take up so  much  space.
        *  gawkapi.c (api_sym_update_scalar): Rework optimization
code         to clean up the function.

2012-07-17         Andrew  J.  Schorr      <aschorr@telemetry-in-
vestments.com>

        * gawkapi.h: Add comments explaining new api_create_value
and          api_release_value  functions.           *  gawkapi.c
(sym_update_real):    Allow    updates    with   AWK_SCALAR   and
        AWK_VALUE_COOKIE types.  After creating a  regular  vari-
able,          remove  the  call to unref(node->var_value), since
this is not         done elsewhere in the code (see, for example,
main.c:init_vars).           If  the  update  is  for an existing
variable, allow any val_type         except AWK_ARRAY (was previ-
ously  disallowing AWK_SCALAR and         AWK_VALUE_COOKIE for no
apparent reason).           (api_sym_update_scalar):  The  switch
should  return  false  for  an         invalid val_type value, so
change  the  AWK_ARRAY  case  to  default.            (valid_sub-
script_type):  Any  scalar  value  is  good,  so accept any valid
        type except AWK_ARRAY.           (api_create_value):  Ac-
cept  only  AWK_NUMBER  and  AWK_STRING values.          Anything
else should fail.

2012-07-17         Arnold D. Robbins     <arnold@skeeve.com>

        Speedup:

        *   awk.h   (r_free_wstr):   Renamed   from    free_wstr.
        (free_wstr):  Macro  to  test  the  WSTRCUR  flag  first.
        * node.c (r_free_wstr): Renamed from free_wstr.

        Support value cookies:

        *  gawkapi.h  (awk_val_type_t):   Add   AWK_VALUE_COOKIE.
        (awk_value_cookie_t):  New  type.          (awk_value_t):
Support  AWK_VALUE_COOKIE.           (api_create_value,   api_re-
lease_value):   New   function   pointers.           *  gawkapi.c
(awk_value_to_node,   api_sym_update_scalar,           valid_sub-
script_type):  Handle AWK_VALUE_COOKIE.          (api_create_val-
ue, api_release_value): New functions.

2012-07-16         Arnold D. Robbins     <arnold@skeeve.com>

        *  gawkapi.c  (awk_value_to_node):  Support   AWK_SCALAR.
        (api_sym_update_scalar): Performance improvements.

2012-07-12         Arnold D. Robbins     <arnold@skeeve.com>

        Allow creation of constants. Thanks to John Haque for the
        implementation concept.

        *  gawk_api.h  (api_sym_constant):  Create  a   constant.
        *    gawk_api.h   (api_sym_update_real):   Renamed   from
api_sym_update.          Add is_const parameter and do the  right
thing  if true.          (api_sym_update, api_sym_constant): Call
api_sym_update_real             in     the      correct      way.
        (set_constant): New function.

2012-07-11          Andrew  J.  Schorr     <aschorr@telemetry-in-
vestments.com>

        * gawkapi.h: Fix typo in comment.          (awk_value_t):
Type   for  scalar_cookie  should  be  awk_scalar_t,          not
awk_array_t.          (gawk_api): Add  new  api_sym_lookup_scalar
function.           (sym_lookup_scalar):  New  wrapper  macro for
api_sym_lookup_scalar      hook.                *       gawkapi.c
(api_sym_lookup_scalar):   New   function   for   faster   scalar
        lookup.             (api_impl):     Add     entry     for
api_sym_lookup_scalar.

2012-07-11          Andrew  J.  Schorr     <aschorr@telemetry-in-
vestments.com>

        *  gawkapi.c  (awk_value_to_node):  Change  to  a  switch
statement          so AWK_SCALAR or other invalid type is handled
properly.          (valid_subscript_type): Test whether  a  value
type  is  acceptable          for  use as an array subscript (any
scalar   value   will    do).             (api_get_array_element,
api_set_array_element,  api_del_array_element):          Use  new
valid_subscript_type instead of restricting to string values.

2012-07-11         Arnold D. Robbins     <arnold@skeeve.com>

        Lots of API work.

        * gawkapi.h: Function pointer members renamed api_XXX and
        macros  adjusted.  More documentation.          (awk_val-
type_t):   New    AWK_SCALAR    enum    for    scalar    cookies.
        (awk_scalar_t):  New  type.           (awk_value_t):  New
member scalar_cookie.          (api_sym_update_scalar):  New  API
function.           (erealloc):  New  macro.           (make_con-
st_string):    New    macro,     renamed     from     dup_string.
        (make_malloced_string):    New    macro,   renamed   from
make_string.          (make_null_string):  New  inline  function.
        (dl_load_func):  Add call to init routine through pointer
if         not NULL.

        * gawkapi.c (awk_value_to_node): Assume that string  val-
ues  came         from malloc.          (node_to_awk_value): Han-
dle      AWK_SCALAR.               (api_sym_update):       Ditto.
        (api_sym_update_scalar):           New           routine.
        (api_get_array_element):  Return  false  if  the  element
doesn't exist.          Always unref the subscript.          (re-
move_element): New helper  routine.           (api_del_array_ele-
ment):  Use  it.           (api_release_flattened_array):  Ditto.
        (api_impl): Add the new routine.

2012-07-11         Andrew  J.  Schorr      <aschorr@telemetry-in-
vestments.com>

        *   gawkapi.c  (api_sym_update):  Allow  val_type  to  be
AWK_UNDEFINED         for setting a variable to  "",  i.e.  dupn-
ode(Nnull_string).

2012-07-10          Andrew  J.  Schorr     <aschorr@telemetry-in-
vestments.com>

        * awkgram.y (add_srcfile): Lint  warning  message  for  a
previously  loaded          shared  library  should  say "already
loaded  shared  library"  instead          of  "already  included
source file".

2012-07-08         Arnold D. Robbins     <arnold@skeeve.com>

        *  gawkapi.h  (set_array_element):  Use index + value in-
stead         of element  structure.  Matches  get_array_element.
        (set_array_element_by_elem): New macro to use an element.
        * gawkapi.c (api_set_array_element): Make  the  necessary
adjustments.

2012-07-04         Arnold D. Robbins     <arnold@skeeve.com>

        *  awkgram.y  (tokentab): Remove limit on number of argu-
ments         for "and", "or", and  "xor".           *  builtin.c
(do_and,  do_or,  do_xor): Modify code to perform the         re-
spective operation on any number  of  arguments.  There  must  be
        at least two.

2012-06-29         Arnold D. Robbins     <arnold@skeeve.com>

        * gawkapi.h: Improve the documentation of the return val-
ues         per Andrew Schorr.

2012-06-25         Arnold D. Robbins     <arnold@skeeve.com>

        * TODO.xgawk: Updated.          * awk.h (track_ext_func):
Declared.           * awkgram.y (enum defref): Add option for ex-
tension function.          (struct fdesc): Add member for  exten-
sion  function.           (func_use):  Handle extension function,
mark as extension  and  defined.           (track_ext_func):  New
function.           (check_funcs):  Update  logic  for  extension
functions.          * ext.c (make_builtin): Call track_ext_func.

2012-06-24         Andrew  J.  Schorr      <aschorr@telemetry-in-
vestments.com>

        *  TODO.xgawk:  Most of IOBUF has been hidden.          *
gawkapi.h  (IOBUF):  Remove  declaration  (now  back  in  awk.h).
        (IOBUF_PUBLIC):  Declare new structure defining subset of
IOBUF  fields          that  should  be  exposed  to  extensions.
        (gawk_api): Update register_open_hook argument from IOBUF
to         IOBUF_PUBLIC.          * awk.h (IOBUF): Restore decla-
ration with 5 fields moved to new         IOBUF_PUBLIC structure.
        (register_open_hook):  Update  open_func  argument   from
IOBUF  to          IOBUF_PUBLIC.          * gawkapi.c (api_regis-
ter_open_hook):   Ditto.            *   io.c    (after_beginfile,
nextfile, iop_close, gawk_pclose): Some fields         such as fd
and  name  are   now   inside   the   IOBUF   public   structure.
        (struct  open_hook): Update open_func argument from IOBUF
to                      (register_open_hook):              Ditto.
        (find_open_hook):   opaque   now   inside   IOBUF_PUBLIC.
        (iop_alloc):   fd   and   name   now   in   IOBUF_PUBLIC.
        (get_a_record):  If  the get_record hook returns EOF, set
the IOP_AT_EOF          flag.   Access  fd  inside  IOBUF_PUBLIC.
        (get_read_timeout):  File  name  now inside IOBUF_PUBLIC.
        *  interpret.h  (r_interpret):  File  name   now   inside
IOBUF_PUBLIC.          * ext.c (load_ext): No need to call return
at the end of a void         function.

2012-06-24         Arnold D. Robbins     <arnold@skeeve.com>

        * ext.c (load_ext): Don't return  a  value  from  a  void
function.           *  gawkapi.c  (api_set_array_element): Set up
vname and parent_array.

2012-06-21         Arnold D. Robbins     <arnold@skeeve.com>

        More API and cleanup:

        * awk.h (stopme): Make signature match  other  built-ins.
        *  awkgram.y  (stopme): Make signature match other built-
ins.           (regexp):   Minor   edit.            *   gawkapi.c
(api_set_argument):  Remove  unused  variable.           Set par-
ent_array field of array  value.           *  TODO.xgawk:  Update
some.

        Remove extension() builtin.

        * awk.h (do_ext): Removed.          (load_ext): Signature
changed.           *   awkgram.y   (tokentab):   Remove   do_ext.
        Change calls to do_ext.          * ext.c (load_ext): Make
init function a constant.          * main.c (main): Change  calls
to do_ext.

2012-06-20         Arnold D. Robbins     <arnold@skeeve.com>

        Restore lost debugging function:

        *  awkgram.y  (stopme): Restore long lost debugging func-
tion.          * awk.h (stopme): Add declaration.

        API work:

        * ext.c (get_argument):  Make  extern.           *  awk.h
(get_argument):  Declare  it.          * gawkapi.c (api_set_argu-
ment): Call it. Finish  off  the  logic.           (api_get_argu-
ment):  Refine  logic  to  use get_argument.          * gawkapi.h
(set_argument): New API.

2012-06-19         Arnold D. Robbins     <arnold@skeeve.com>

        Remove code duplication in gawkapi.c from msg.c:

        * awk.h (err): Add `isfatal' first parameter.           *
awkgram.y (err): Adjust all calls.          * msg.c (err): Adjust
all calls. Move fatal code to here ...           (r_fatal):  From
here.           *  gawkapi.c:  Remove code duplication and adjust
calls to `err'.

        Handle deleting elements of flattened array:

        * awk.h (get_argument):  Remove  declaration.           *
ext.c   (get_argument):   Make   static.            *   gawkapi.h
(awk_flat_array_t): Make opaque fields  const.  Add          more
descriptive comments.          * gawkapi.c (release_flattened_ar-
ray): Delete elements  flagged          for  deletion.  Free  the
flattened array also.

        Add additional debugging when developing:

        *   configure.ac:   Add   additional   debugging   flags.
        * configure: Regenerated.

2012-06-18         Arnold D. Robbins     <arnold@skeeve.com>

        * gawkapi.h (get_array_element): Restore `wanted' parame-
ter.           (awk_element_t):  Use  awk_value_t  for index. Add
awk_flat_array_t.          (flatten_array): Change  signature  to
use  awk_flat_array_t;          (release_flattened_array): Change
signature   to   use   awk_flat_array_t;           *    gawkapi.c
(api_sym_update):  Handle  case  where  variable  exists already.
        (api_get_array_element): Restore `wanted'  parameter  and
pass  it          on  to node_to_awk_value.          (api_set_ar-
ray_element):   Revisse   to   match   changed   element    type.
        (api_flatten_array):    Revise    signature,   implement.
        (api_release_flattened_array): Revise  signature,  imple-
ment.

2012-06-17         Arnold D. Robbins     <arnold@skeeve.com>

        API Work:

        *  gawkapi.h (get_array_element): Remove `wanted' parame-
ter.          (r_make_string): Comment the  need  for  `api'  and
`ext_id'  parameters.          * gawkapi.c (api_sym_update): Move
checks to front.          Initial code for handling arrays. Still
needs    work.            (api_get_array_element):   Implemented.
        (api_set_array_element):   Additional   checking    code.
        (api_del_array_element):  Implemented.          (api_cre-
ate_array): Implemented.           (init_ext_api):  Force  do_xxx
values to be 1 or 0.          (update_ext_api): Ditto.

2012-06-12         Arnold D. Robbins     <arnold@skeeve.com>

        API Work:

        *     gawkapi.h     (awk_value_t):     Restore     union.
        (get_curfunc_param): Renamed to get_argument. Return type
changed          to  awk_bool_t. Semantics better thought out and
documented.          (awk_atexit, get_array_element): Return type
now  void.           (sym_lookup): Return type now void. Argument
order rationalized.          * gawkapi.c (node_to_awk_value): Re-
turn  type  is now awk_bool_t.          Semantics now match table
in gawkawpi.h.          (api_awk_atexit): Return type  now  void.
        (api_sym_lookup):  Return  type is now awk_bool_t. Change
parameter         order.          (api_get_array_element): Return
type is now awk_bool_t.

        Further  API implementations and fixes for extension/tes-
text.c:

        * awk.h (final_exit): Add declaration.           *  ext.c
(load_ext):  Change `func' to install_func.          * gawkapi.c:
Add  casts   to   void   for   id   param   in   all   functions.
        (api_sym_update):          Finish         implementation.
        (api_get_array_element):      Start       implementation.
        (api_set_array_element):      Add     error     checking.
        (api_get_element_count): Add error checking,  return  the
right value.          * main.c (main): Call final_exit instead of
exit.          (arg_assign): Ditto.          *  msg.c  (final_ex-
it):   New   routine   to   run   the  exit  handlers  and  exit.
        (gawk_exit): Call it.          * profile.c  (dump_and_ex-
it): Ditto.

2012-06-10          Andrew  J.  Schorr     <aschorr@telemetry-in-
vestments.com>

        * TODO.xgawk: Addition of time extension moved to  "done"
section.

2012-06-10          Andrew  J.  Schorr     <aschorr@telemetry-in-
vestments.com>

        * gawkapi.c (api_update_ERRNO_string): Treat boolean true
as a request         for TRANSLATE, and false as DONT_TRANSLATE.

2012-06-06         Arnold D. Robbins     <arnold@skeeve.com>

        *  cint_array.c  (tree_print, leaf_print): Add additional
casts         for printf warnings.

        * awk.h  (update_ext_api):  Add  declaration.           *
gawkapi.c   (update_ext_api):  New  function.           *  eval.c
(set_LINT):  Call  update_ext_api()  at   the   end.            *
gawkapi.h: Document that do_XXX could change on the fly.

        *   awk.h   (run_ext_exit_handlers):   Add   declaration.
        * msg.c (gawk_exit): Call it.

2012-06-05         Arnold D. Robbins     <arnold@skeeve.com>

        * ext.c (load_ext): Remove use of RTLD_GLOBAL. Not needed
in new         scheme. Clean up error messages.

2012-06-04         Arnold D. Robbins     <arnold@skeeve.com>

        *  configure.ac:  Remove  use of -export-dynamic for GCC.
        * configure: Regenerated.

2012-05-30         Arnold D. Robbins     <arnold@skeeve.com>

        * main.c (is_off_limits_var): Minor  coding  style  edit.
        *    gawkapi.c    (awk_value_to_node):    More   cleanup.
        (node_to_awk_value): Use `wanted'  for  decision  making.
        (api_sym_update):  Start implementation. Needs more work.
        General: More  cleanup,  comments.           *  gawkapi.h
(api_sym_update): Add additional comments.

2012-05-29         Arnold D. Robbins     <arnold@skeeve.com>

        *  gawkapi.c (node_to_awk_value): Add third parameter in-
dicating  type          of  value  desired.  Based  on  that,  do
force_string  or  force_number          to  get the "other" type.
        (awk_value_to_node):   Clean   up   the   code   a   bit.
        (get_curfunc_param):   Move   forcing   of   values  into
node_to_awk_value.          (api_sym_lookup): Add third parameter
indicating  type  of  value  wanted.          (api_get_array_ele-
ment): Ditto.           *  gawk_api.h:  Additional  comments  and
clarifications.  Revise APIs         to take third 'wanted' argu-
ment as above.          (awk_value_t): No longer a union so  that
both  values  may be accessed.          All macros: Parenthesized
the bodies.          * bootstrap.sh: Rationalize a bit.

2012-05-26         Andrew  J.  Schorr      <aschorr@telemetry-in-
vestments.com>

        * Makefile.am (include_HEADERS): Add so gawkapi.h will be
installed.          (base_sources): Add gawkapi.h so that  it  is
in dist tarball.          * TODO.xgawk: Update.          * main.c
(is_off_limits_var):   Stop   returning   true   for   everything
        except PROCINFO.

2012-05-25         Arnold D. Robbins     <arnold@skeeve.com>

        *  main.c (is_off_limits_var): New function to check if a
variable         is  one  that  an  extension  function  may  not
change.            *   awk.h   (is_off_limits_var):  Declare  it.
        * gawkapi.c (api_sym_lookup): Use it.

        * bootstrap.sh: Touch various files in the extension  di-
rectory also.

2012-05-24          Andrew  J.  Schorr     <aschorr@telemetry-in-
vestments.com>

        * gawkapi.h (awk_param_type_t): Remove (use awk_valtype_t
instead).           (awk_ext_func_t): Pass a result argument, and
return an awk_value_t  *.           (gawk_api.get_curfunc_param):
Add  a result argument.          (gawk_api.set_return_value): Re-
move    obsolete     function.              (gawk_api.sym_lookup,
gawk_api.get_array_element):   Add   a  result          argument.
        (gawk_api.api_make_string, gawk_api.api_make_number): Re-
move  hooks,          since  access to gawk internal state is not
required to do this.          (set_return_value): Remove obsolete
macro.           (get_curfunc_param,  sym_lookup,  get_array_ele-
ment): Add result  argument.           (r_make_string,  make_num-
ber):   New   static   inline  functions.           (make_string,
dup_string): Revise macro  definitions.           (dl_load_func):
Remove  global_api_p and global_ext_id args,         and fix SEGV
by  setting  api  prior  to   checking   its   version   members.
        (GAWK):  Expand  ifdef  to include more stuff.          *
gawkapi.c    (node_to_awk_value):    Add     result     argument.
        (api_get_curfunc_param):  Add  result  argument,  and use
awk_valtype_t.          (api_set_return_value):  Remove  obsolete
function.           (awk_value_to_node):  New  global function to
convert      back       into       internal               format.
        (api_add_ext_func):     Simply     call     make_builtin.
        (node_to_awk_value):  Add  result  argument,  and  handle
Node_val  case.          (api_sym_lookup, api_get_array_element):
Add result argument.          (api_set_array_element): Implement.
        (api_make_string, api_make_number): Remove functions that
belong on         client side.          (api_impl): Remove 3  ob-
solete   entries.            *   TODO.xgawk:  Update  to  reflect
progress.          * Makefile.am (base_sources):  Add  gawkapi.c.
        *  awk.h:  Include gawkapi.h earlier.          (api_impl,
init_ext_api, awk_value_to_node): Add declarations         so  we
can  hook  in new API.          (INSTRUCTION): Add new union type
efptr for external functions.          (extfunc): New define  for
d.efptr.           (load_ext):  Remove  3rd obj argument that was
never used for anything.          (make_builtin):  Change  signa-
ture for new API.          * awkgram.y (load_library): Change 2nd
argument to load_ext         from dlload to dl_load,  and  remove
pointless   3rd   argument.            *   main.c   (main):  Call
init_ext_api() before loading shared  libraries.           Change
2nd  argument  to  load_ext  from  dlload  to dl_load, and remove
        pointless 3rd argument.          * ext.c (do_ext): Remove
pointless  3rd  argument to load_ext.          (load_ext): Remove
3rd  argument.   Port   to   new   API   (change   initialization
        function  signature).   If initialization function fails,
issue  a  warning          and  return   -1,   else   return   0.
        (make_builtin):  Port  to new API.          * interpret.h
(r_interpret):  For  Op_ext_builtin,  call   external   functions
        with  an  awk_value_t  result buffer, and convert the re-
turned value         to a NODE *.  For Node_ext_func, code now in
extfunc instead of builtin.

2012-05-21          Andrew  J.  Schorr     <aschorr@telemetry-in-
vestments.com>

        * configure.ac: Remove libtool, and call configure in the
        extension subdirectory.  Change pkgextensiondir to remove
the         version number, since the new API has builtin version
checks.           * TODO.xgawk: Update.          * ltmain.sh: Re-
moved, since libtool no longer used here.

2012-05-19         Andrew  J.  Schorr      <aschorr@telemetry-in-
vestments.com>

        *  TODO.xgawk: Update to reflect progress and new issues.
        * main.c (main): Add -i (--include) option.          (us-
age): Ditto.          * awkgram.y (add_srcfile): Eliminate dupli-
cates only for SRC_INC         and SRC_EXTLIB  sources  (i.e.  -f
duplicates should not be removed).          * io.c (find_source):
Set DEFAULT_FILETYPE to ".awk" if not defined         elsewhere.

2012-05-15         Arnold D. Robbins     <arnold@skeeve.com>

        * awk.h: Include "gawkapi.h"  to  get  IOBUF.           *
gawkapi.h:  Considerable updates.          * gawkapi.c: New file.
Start at implementing the APIs.

2012-05-13         Andrew  J.  Schorr      <aschorr@telemetry-in-
vestments.com>

        *  TODO.xgawk:  Update  to reflect recent discussions and
deletion of         extension/xreadlink.[ch].

2012-05-11         Arnold D. Robbins     <arnold@skeeve.com>

        Sweeping change: Use `bool', `true', and  `false'  every-
where.

2012-04-09          Andrew  J.  Schorr     <aschorr@telemetry-in-
vestments.com>

        * eval.c (unset_ERRNO): Fix memory management bug -- need
to use         dupnode with Nnull_string.

2012-04-08          Andrew  J.  Schorr     <aschorr@telemetry-in-
vestments.com>

        * Makefile.am (valgrind): Define VALGRIND instead of  re-
defining AWK.          This allows test/Makefile.am to set up the
command  environment  as           desired.            (valgrind-
noleak):   Ditto,   plus   set  --leak-check=no  instead  of  the
        default summary setting.

2012-04-07         Andrew  J.  Schorr      <aschorr@telemetry-in-
vestments.com>

        * TODO.xgawk: Update to reflect progress.

2012-04-01          Andrew  J.  Schorr     <aschorr@telemetry-in-
vestments.com>

        * TODO.xgawk: Move valgrind-noleak item into "done"  sec-
tion.           * Makefile.am (valgrind-noleak): Add new valgrind
rule that omits         the "--leak-check=full"  option  to  help
spot more serious problems.

2012-04-01          Andrew  J.  Schorr     <aschorr@telemetry-in-
vestments.com>

        *  TODO.xgawk:  Move  ERRNO  item  into  "done"  section.
        * awk.h (update_ERRNO, update_ERRNO_saved): Remove decla-
rations.          (update_ERRNO_int,  enum  errno_translate,  up-
date_ERRNO_string,          unset_ERRNO):  Add  new declarations.
        *  eval.c  (update_ERRNO_saved):  Renamed  to  update_ER-
RNO_int.           (update_ERRNO_string,  unset_ERRNO): New func-
tions.          * ext.c  (do_ext):  Use  new  update_ERRNO_string
function.           *  io.c (ERRNO_node): Remove redundant extern
declaration (in awk.h).          (after_beginfile, nextfile): Re-
place    update_ERRNO()   with           update_ERRNO_int(errno).
        (inrec):  Replace  update_ERRNO_saved   with   update_ER-
RNO_int.            (do_close):   Use   new  function  update_ER-
RNO_string.          (close_redir, do_getline_redir, do_getline):
Replace update_ERRNO_saved         with update_ERRNO_int.

2012-03-27          Andrew  J.  Schorr     <aschorr@telemetry-in-
vestments.com>

        * TODO.xgawk: Update to reflect debate about how to  sup-
port  Cygwin          and other platforms that cannot link shared
libraries with  unresolved          references.           *  awk-
gram.y  (add_srcfile):  Minor  bug  fix:  reverse  sense  of test
        added by Arnold in last patch.           *  configure.ac:
AC_DISABLE_STATIC must come before AC_PROG_LIBTOOL.

2012-03-26         Arnold D. Robbins     <arnold@skeeve.com>

        Some cleanups.

        * awkgram.y (add_srcfile): Use whole messages, better for
        translations.          * io.c (init_awkpath): Small style
tweak.           *  main.c (path_environ): Straighten out initial
comment, fix         compiler warning by making `val' const  char
*.

2012-03-25          Andrew  J.  Schorr     <aschorr@telemetry-in-
vestments.com>

        * configure.ac (AC_DISABLE_STATIC):  Add  this  to  avoid
building useless         static extension libraries.

2012-03-25          Andrew  J.  Schorr     <aschorr@telemetry-in-
vestments.com>

        * TODO.xgawk: New  file  listing  completed  and  pending
xgawk enhancements.

2012-03-24          Andrew  J.  Schorr     <aschorr@telemetry-in-
vestments.com>

        * io.c (path_info): Fix  white  space.           (pi_awk-
path,     pi_awklibpath):     Avoid    structure    initializers.
        (do_find_source):   Eliminate   pointless    parentheses.
        (find_source): Leave a space after "&".          * main.c
(load_environ): Fix typo in comment.

2012-03-21         Andrew  J.  Schorr      <aschorr@telemetry-in-
vestments.com>

        *  awkgram.y  (LEX_LOAD):  New  token  to  support @load.
        (grammar): Add  rules  to  support  @load.           (to-
kentab):  Add  "load".          (add_srcfile): Improve error mes-
sage to distinguish between source files         and  shared  li-
braries.           (load_library): New function to load libraries
specified with @load.          (yylex): Add support for  LEX_LOAD
(treated the same way as LEX_INCLUDE).

2012-03-20          Andrew  J.  Schorr     <aschorr@telemetry-in-
vestments.com>

        *    Makefile.am    (EXTRA_DIST):    Remove    extension.
        (SUBDIRS):  Add  extension  so  libraries  will be built.
        (DEFS): Define DEFLIBPATH and SHLIBEXT  so  we  can  find
shared  libraries.          * awk.h (deflibpath): New extern dec-
laration.           *  configure.ac:  Add  support  for  building
shared  libraries  by adding         AC_PROG_LIBTOOL and AC_SUBST
for acl_shlibext and pkgextensiondir.          (AC_CONFIG_FILES):
Add  extension/Makefile.           * io.c (pi_awkpath, pi_awklib-
path): New static structures to contain         path information.
        (awkpath,  max_pathlen):  Remove static variables now in-
side pi_awkpath.          (init_awkpath):  Operate  on  path_info
structure  to  support  both          AWKPATH and AWKLIBPATH.  No
need for max_path to be  static,  since          this  should  be
called    only    once    for    each    environment    variable.
        (do_find_source): Add a path_info arg  to  specify  which
path  to  search.           Check the try_cwd parameter to decide
whether to search the current          directory  (not  desirable
for   AWKLIBPATH).            (find_source):  Choose  appropriate
path_info structure based on value         of the is_extlib argu-
ment.  Set EXTLIB_SUFFIX using SHLIBEXT define         instead of
hardcoding ".so".          * main.c (path_environ): New  function
to  add  AWKPATH  or  AWKLIBPATH          to  the  ENVIRON array.
        (load_environ): Call path_environ for AWKPATH and AWKLIB-
PATH.

2012-06-19         Arnold D. Robbins     <arnold@skeeve.com>

        *  main.c (main): Do setlocale to "C" if --characters-as-
bytes.          Thanks to "SP" for the bug report.

2012-05-09         Arnold D. Robbins     <arnold@skeeve.com>

        * configure.ac: Added AC_HEADER_STDBOOL         *  awk.h,
dfa.c,  regex.c:  Reworked to use results         of test and in-
clude missing_d/gawkbool.h.

2012-05-07         Arnold D. Robbins     <arnold@skeeve.com>

        * array.c (prnode): Add casts to  void*  for  %p  format.
        *    debug.c   (print_instruction):   Ditto.            *
builtin.c: Fix %lf format to be %f everywhere.

        Unrelated:

        * replace.c: Don't include "config.h", awk.h gets it  for
us.

2012-05-04         Arnold D. Robbins     <arnold@skeeve.com>

        *  getopt.c  [DJGPP]: Change to __DJGPP__.          * mb-
support.h [DJGPP]: Change to __DJGPP__.

        Unrelated:

        * awk.h: Workarounds for _TANDEM_SOURCE.

2012-05-01         Arnold D. Robbins     <arnold@skeeve.com>

        * dfa.c: Sync with GNU grep. RRI code now  there,  needed
additional          change for gawk.          * configure.ac: Add
check for stdbool.h.          * regex.c: Add  check  for  if  not
have stdbool.h, then define the         bool stuff.

2012-04-27         Arnold D. Robbins     <arnold@skeeve.com>

        *   dfa.c:   Sync  with  GNU  grep.           *  xalloc.h
(xmemdup): Added, from grep, for dfa.c. Sigh.

2012-04-27         Arnold D. Robbins     <arnold@skeeve.com>

        Update to autoconf 2.69, automake 1.12.

        * INSTALL, aclocal.m4, configh.in,  depcomp,  install-sh,
missing,          mkinstalldirs, ylwrap: Updated.          * con-
figure.ac (AC_TYPE_LONG_LONG_INT, AC_TYPE_UNSIGNED_LONG_LONG_INT,
        AC_TYPE_INTMAX_T,  AC_TYPE_UINTMAX_T):  Renamed from gl_*
versions.          * configure: Regenerated.

2012-04-24         Arnold D. Robbins     <arnold@skeeve.com>

        *   cmd.h   (dPrompt,    commands_Prompt,    eval_Prompt,
dgawk_Prompt):  Changed          to  dbg_prompt, commands_prompt,
eval_prompt, dgawk_prompt.          * debug.c: Ditto.           *
command.y: Ditto.  Some minor whitespace and comments cleanup.

2012-04-24         Arnold D. Robbins     <arnold@skeeve.com>

        io.c cleanup and some speedup for RS as regexp parsing.

        *  awk.h  (Regexp):  New members has_meta and maybe_long.
        (enum  redirval):   Add   redirect_none   as   value   0.
        (remaybelong):  Remove  function  declaration.          *
awkgram.y: Use redirect_none instead of 0 for no redirect  cases.
        *  io.c  (go_getline_redir):  Second arg now of type enum
redirval.            Changed    intovar    into    into_variable.
        (comments  and  whitespace):  Lots  of  general  cleanup.
        (socket_open):    readle     changed     to     read_len.
        (two_way_open): Add additional calls to os_close_on_exec.
        (rsrescan): Simplify code a bit and  use  RS->maybe_long.
        *  re.c  (make_regexp):  Set  up  new  members  in Regexp
struct.          (remaybelong): Remove function.           (reis-
string): Simplified code.

2012-04-16  Eli Zaretskii  <eliz@gnu.org>

        *  io.c  (read_with_timeout) [__MINGW32__]: Just call the
blocking         'read', as 'select' is only available for  sock-
ets.          * mpfr.c (set_ROUNDMODE) [!HAVE_MPFR]: Renamed from
set_RNDMODE.          * main.c  (load_procinfo):  Declare  name[]
also when HAVE_MPFR is         defined even though HAVE_GETGROUPS
etc. are not.

2012-04-12         John Haque      <j.eh@mchsi.com>

        * array.c, awk.h, awkgram.y,  builtin.c,  command.y,  de-
bug.c,          field.c,  mpfr.c,  profile.c:  Change RND_MODE to
ROUND_MODE.

2012-04-11         John Haque      <j.eh@mchsi.com>

        * main.c (varinit): Change RNDMODE to ROUNDMODE.

2012-04-11         Arnold D. Robbins     <arnold@skeeve.com>

        * main.c: Change --arbitrary-precision to --bignum.

2012-04-02         John Haque      <j.eh@mchsi.com>

        Add support for arbitrary-precision arithmetic.

        * mpfr.c: New file.          * awk.h  (struct  exp_node):
Add  union  to  handle  different  number  types.          (MPFN,
MPZN): New flag values.          (DO_MPFR, do_mpfr): New defines.
        (PREC_node,      RNDMODE_node):     Add     declarations.
        (PRECISION, RND_MODE, MNR,  MFNR,  mpzval,  do_ieee_fmt):
Add  declarations.          (make_number, str2number, format_val,
cmp_numbers): Ditto.          (force_number): Change  definition.
        (Func_pre_exec,     Func_post_exec):     New    typedefs.
        (POP_NUMBER,     TOP_NUMBER):     Change     definitions.
        (get_number_ui,   get_number_si,  get_number_d,  get_num-
ber_uj,           iszero,   IEEE_FMT,   mpg_float,   mpg_integer,
mpg_float,          mpg_integer):  New  defines.           * awk-
gram.y  (tokentab):    Add   alternate   function   entries   for
MPFR/GMP.           (snode):  Choose  the  appropriate  function.
        (negate_num):  New   function   to   negate   a   number.
        (grammar):  Use  it.          (yylex): Adjust number han-
dling  code.           *   array.c   (value_info,   asort_actual,
sort_user_func):    Adjust    for            MPFR/GMP    numbers.
        (do_adump, indent): Minor changes.           (sort_up_in-
dex_number,    sort_up_value_number,   sort_up_value_type):   Use
        cmp_numbers()   for   numeric   comparisons.            *
builtin.c  (mpz2mpfr):  New function.          (format_tree): Ad-
just to handle MPFR and GMP numbers.           *  eval.c  (regis-
ter_exec_hook):   New   function  to  manage  interpreter  hooks.
        (num_exec_hook, pre_execute, post_execute): New  and  ad-
justed  definitions.           (h_interpret):  Renamed  from  de-
bug_interpret.          (init_interpret): Changed to use the  new
name.           (flags2str):  New  entries  for  MPFN  and  MPZN.
        (cmp_nodes): Reworked to use separate routine for numeric
comparisons.          (set_IGNORECASE, set_BINMODE, set_LINT, up-
date_NR, update_FNR,         update_NF):  Adjust  code  and  some
cleanup.           * field.c (rebuild_record): Field copying code
reworked to handle         MPFR/GMP  numbers.           (set_NF):
Minor  adjustment.           *  io.c  (INCREMENT_REC): New macro.
        (inrec,    do_getline):    Use     the     new     macro.
        (nextfile,     set_NR,     set_FNR,     get_read_timeout,
pty_vs_pipe): Adjust code          to  handle  MPFR/GMP  numbers.
        * interpret.h (r_interpret): Adjust TOP_NUMBER/POP_NUMBER
usage.            (EXEC_HOOK):   New   macro   and    definition.
        (DEBUGGING):  Removed.           *  main.c (DEFAULT_PREC,
DEFAULT_RNDMODE): New defines.          (opttab): New  entry  for
option  arbitrary-precision.           (main): Handle the new op-
tion.          (usage): Add to usage message.          (varinit):
Add  PREC and RNDMODE.          (load_procinfo): Install MPFR and
GMP related items.          (version): Append MPFR and  GMP  ver-
sions  to  message.           * msg.c (err) : Adjust FNR handling
with MPFR/GMP.          *  node.c  (r_format_val):  Renamed  from
format_val.           (r_force_number):  Return NODE * instead of
AWKNUM.             (make_number,     str2number,     format_val,
cmp_numpers:  Defined  and  initialized.          (r_unref): Free
MPFR/MPZ numbers.          (get_numbase): Renamed from isnondeci-
mal  and return the base.          (cmp_awknums): New function to
compare two AWKNUMs.          * command.y (yylex): Adjust  number
handling  code.           (grammar):  Minor adjustments to handle
negative numbers.          * debug.c (init_debug): New  function.
        (do_info,  do_set_var,  watchpoint_triggered,  serialize,
        initialize_watch_item, do_watch, print_watch_item): Minor
adjustments.           (debug_pre_execute):  Adjusted  to  handle
MPFR and GMP numbers.

2012-04-09         Arnold D. Robbins     <arnold@skeeve.com>

        * INSTALL, config.guess, config.sub, depcomp, install-sh,
        missing, mkinstalldirs, ylwrap: Update to latest from au-
tomake 1.11.4.

2012-04-08         Arnold D. Robbins     <arnold@skeeve.com>

        * Update various files to automake 1.11.4.

2012-03-30         Arnold D. Robbins     <arnold@skeeve.com>

        * configure.ac (GAWK_AC_NORETURN): Do as macro instead of
inline.

2012-03-29         Arnold D. Robbins     <arnold@skeeve.com>

        *  dfa.h,  dfa.c: Sync with grep. Major cleanups and some
changes         there.          * re.c (research):  Pass  size_t*
to dfaexec to match type change.          * configure.ac (AH_VER-
BATIM[_Noreturn]): Added from Paul Eggert to         ease compil-
ing.          (AC_INIT): Bump version.          * configure, con-
figh.in, version.c: Regenerated.

2012-03-28         Arnold D. Robbins     <arnold@skeeve.com>

        * 4.0.1: Release tar ball made.

2012-03-28         Arnold D. Robbins     <arnold@skeeve.com>

        * getopt.c: Add DJGPP to list of platforms where it's  ok
        to  include  <stdlib.h>.          * awkgram.y, builtin.c,
ext.c, mbsupport.h, re.c: Update         copyright year.

2012-03-21         Corinna Vinschen      <vinschen@redhat.com>

        * getopt.c: Add Cygwin to list of platforms where it's ok
        to include <stdlib.h>.

2012-03-20         Arnold D. Robbins     <arnold@skeeve.com>

        Get new getopt to work on Linux and C90 compilers:

        *     getopt.c:     Undef     ELIDE_CODE     for    gawk.
        (_getopt_internal_r): Init first.needs_free to 0. In test
for -W         move executable code to after declarations for C90
compilers.          * getopt1.c: Undef ELIDE_CODE for gawk.

        Minor bug fix with printf, thanks to John Haque:

        * builtin.c (format_tree): Initialize base to zero at the
top         of the while loop.

        Getting next tar ball ready:

        *  configure.ac:  Remove  duplicate  check  for  wcscoll.
Thanks         to Stepan Kasal.

2012-03-16         Arnold D. Robbins     <arnold@skeeve.com>

        * getopt.c, getopt.h, getopt1.c, getopt_int.h, regcomp.c,
        regex.c,   regex.h,  regex_internal.c,  regex_internal.h,
        regexec.c: Sync with GLIBC, what the heck.

2012-03-14         Eli Zaretskii  <eliz@gnu.org>

        * mbsupport.h (btowc): Change for  non-DJGPP.           *
re.c (dfaerror): Add call to exit for DJGPP.

2012-03-14         Arnold D. Robbins     <arnold@skeeve.com>

        *  regex_internal.c  (re_string_skip_chars): Fix calcula-
tion of         remain_len with m.b. chars. Thanks  to  Stanislav
Brabec         <sbrabec@suse.cz>.

2012-02-28         Arnold D. Robbins     <arnold@skeeve.com>

        * main.c (init_groupset): Make `getgroups' failing a non-
fatal         error.  After all, what's  the  big  deal?   Should
help on Plan 9.

2012-02-27         Arnold D. Robbins     <arnold@skeeve.com>

        * dfa.c (parse_bracket_exp): Revert changes 2012-02-15 to
stay         in sync with grep.          * dfa.h (dfarerror): Add
__attribute__ from grep.

2012-02-15         Arnold D. Robbins     <arnold@skeeve.com>

        Fix warnings from GCC 4.6.2 -Wall option.

        *  awkgram.y  (newline_eof): New function to replace body
of         NEWLINE_EOF macro.          (yylex): Replace  body  of
NEWLINE_EOF  macro.           *  dfa.c  (parse_bracket_exp): Init
variables  to  zero.           *  ext.c  (dummy,  junk):  Remove.
        *  regex_internal.c  (re_string_reconstruct):  Remove buf
array. It was         set but not used.

2012-02-10         Arnold D. Robbins     <arnold@skeeve.com>

        * dfa.c: Sync with GNU grep.

2012-02-07         Arnold D. Robbins     <arnold@skeeve.com>

        * main.c (main): Move init of `output_fp' to before pars-
ing  of          program  so that error messages from msg.c don't
dump core.          Thanks to Michael Haardt <michael@moria.de>.

2012-01-13         Arnold D. Robbins     <arnold@skeeve.com>

        * dfa.c [is_valid_unibtye_character]: Fix from  GNU  grep
to         bug reported by me from Scott Deifik for DJGPP.

2012-01-03         Arnold D. Robbins     <arnold@skeeve.com>

        * dfa.c: Sync with GNU grep.

2012-01-02         Arnold D. Robbins     <arnold@skeeve.com>

        *    io.c   (Read_can_timeout,   Read_timeout,   Read_de-
fault_timeout):         Renamed to use lower case.          Other
minor stylistic edits.

2012-01-01         John Haque      <j.eh@mchsi.com>

        *  awk.h  (struct iobuf): New entry read_func.          *
io.c  (Read_can_timeout,   Read_timeout,   Read_default_timeout):
        New  variables.           (init_io):  New routine to ini-
tialize the variables.          (in_PROCINFO): New "clever"  rou-
tine  to  parse  elements  with  indices          separated  by a
SUPSEP.          (get_read_timeout): New routine to read  timeout
value  for an IOBUF.          (read_with_timeout): New routine to
read from  a  fd  with  a  timeout.           (pty_vs_pipe):  Use
in_PROCINFO().          (get_a_record): Set the timeout value and
the read routine as necessary.           *  main.c  (main):  Call
init_io().

2011-12-31         Arnold D. Robbins     <arnold@skeeve.com>

        *  profile_p.c:  Remove the file.          * msg.c (err):
Remove check for name being dgawk.

2011-12-31         Arnold D. Robbins     <arnold@skeeve.com>

        * awk.h [STREQ, STREQN]: Remove macros.           *  awk-
gram.y,  builtin.c,  command.y,  debug.c,  eval.c,          io.c,
msg.c: Change all uses to call strcmp, strncmp.

2011-12-28         Arnold D. Robbins     <arnold@skeeve.com>

        * int_array.c, str_array.c: Fix  some  compiler  warnings
32/64         bit system differences.

2011-12-26         John Haque      <j.eh@mchsi.com>

        Merge  gawk,  pgawk  and  dgawk  into a single executable
gawk.

        *   awk.h   (DO_PRETTY_PRINT,    DO_PROFILE,    DO_DEBUG,
        do_pretty_print, do_debug): New defines.          (inter-
pret):  New  variable,  a  pointer  to  an  interpreter  routine.
        (enum  exe_mode):  Nuked.          * main.c (opttab): New
options --pretty-print and --debug;         Remove option  --com-
mand.           (usage): Update usage messages.          * inter-
pret.h: New file.          * eval.c (r_interpret):  Move  to  the
new  file.           (debug_interpret):  New  interpreter routine
when debugging.          (init_interpret): New  routine  to  ini-
tialize   interpreter   related           variables.            *
eval_d.c, eval_p.c: Delete files.          * debug.c (interpret):
Renamed  to  debug_prog.           (DEFAULT_PROMPT, DEFAULT_HIST-
FILE, DEFAULT_OPTFILE): Remove prefix 'd'.           *  profile.c
(init_profiling): Nuked.          * Makefile.am: Adjusted.

        Add command line option --load for loading extensions.

        *  awk.h  (srctype):  Add  new  source  type  SRC_EXTLIB.
        *  ext.c(load_ext):  New  routine  to   load   extension.
        (do_ext):  Adjust  to  use  load_ext().          * main.c
(opttab): Add new option --load.          (main): Call load_ext()
to  load  extensions.          (usage): Add usage message for the
new   option.            *   io.c   (get_cwd):    New    routine.
        (do_find_source):      Use      the      new     routine.
        (find_source): Handle  new  type  SRC_EXTLIB.           *
awkgram.y (parse_program, next_sourcefile): Skip type SRC_EXTLIB.
        (add_srcfile): Adjust call to find_source.          * de-
bug.c (source_find): Same.

        Unrelated:

        *   ext.c   (get_argument):   Fixed   argument   parsing.
        * array.c (null_array_func): Reworked array routines  for
an  empty  array.           *  str_array.c, int_array.c: Make GCC
happy, use %u instead of %lu         printf  formats.           *
eval.c  (node_Boolean):  New  array  for  TRUE  and  FALSE nodes.
        (init_interpret):     Create     the      new      nodes.
        (eval_condition):   Add   test   for   the   new   nodes.
        (setup_frame): Disable tail-recursion  optimization  when
profiling.           * interpret.h (r_interpret): Use the boolean
nodes instead of making         new ones when needed.

2011-12-26         Arnold D. Robbins     <arnold@skeeve.com>

        Finish Rational Range Interpretation (!)

        * dfa.c (match_mb_charset): Compare wide  characters  di-
rectly          instead  of using wcscoll().          * regexec.c
(check_node_accept_byte): Ditto.

        Thanks to Paolo Bonzini for pointing these out.

2011-12-06         John Haque      <j.eh@mchsi.com>

        * debug.c (source_find): Fix  misplaced  call  to  efree.
        *  profile.c  (redir2str):  Add  a  missing  comma in the
redirtab array.          * eval.c (r_interpret): Disallow call to
exit if currule is undefined.          This avoids the possibili-
ty of running END blocks more than once when          used  in  a
user-defined  sorted-in  comparison  function.          * array.c
(sort_user_func): Adjust appropriately.

2011-12-06         Arnold D. Robbins     <arnold@skeeve.com>

        * awk.h, mbsupport.h: Changes for MBS  support  on  DJGPP
        and z/OS.          * io.c: Disable pty support on z/OS.

2011-11-27         Arnold D. Robbins     <arnold@skeeve.com>

        *  dfa.c:  Sync  with  GNU  grep.           *  dfa.h: Add
_GL_ATTRIBUTE_PURE macro. Bleah.

2011-11-14         John Haque      <j.eh@mchsi.com>

        * debug.c (set_breakpoint_at): Fix problem  with  setting
        breakpoints  in a switch statement. Thanks to Giorgio Pa-
landri         <giorgio.palandri@gmail.com> for the bug report.

2011-11-14         Arnold D. Robbins     <arnold@skeeve.com>

        * mbsupport.h: Add check for HAVE_BTOWC, per Pat Rankin.

2011-11-12         Eli Zaretskii  <eliz@gnu.org>

        * mbsupport.h: Additional glop for dfa.c in Windows envi-
ronment.

2011-11-01         Arnold D. Robbins     <arnold@skeeve.com>

        *  dfa.c:  Move  glop for ! MBS_SUPPORT to ...          *
mbsupport.h:  ...  here.           *  replace.c:  Include   miss-
ing_d/wcmisc.c  if  !  MBS_SUPPORT.           * regex_internal.h:
Move include of mbsupport.h up and add         additional  checks
to avoid inclusion of wctype.h and wchar.h.

2011-10-27         Arnold D. Robbins     <arnold@skeeve.com>

        *  builtin.c  (do_strftime):  Per  Pat Rankin, instead of
casting         fclock, use a long variable and check  for  nega-
tive or overflow.

2011-10-25         Arnold D. Robbins     <arnold@skeeve.com>

        Merge with gawk_performance branch done. Additionally:

        *  cint_array.c,  int_array.c,  str_array.c: Fix compiler
complaints         about printf formats (signed / unsigned vs. %d
/ %u).          * eval.c (setup_frame): Add a missing return val-
ue.

2011-10-25         Arnold D. Robbins     <arnold@skeeve.com>

        * Makefile.am (dist-hook): Use `cd $(srcdir)/pc' so  that
        `make  distcheck'  works completely.          * builtin.c
(do_strftime): Add cast to long int in check         for fclock <
0 for systems where time_t is unsigned (e.g., VMS).

2011-10-25  Stefano Lattarini  <stefano.lattarini@gmail.com>

        dist:  generated file `version.c' is not removed by "make
distclean"

        * Makefile.am (distcleancheck_listfiles): Define  to  ig-
nore the         generated `version.c' file.

2011-10-24         Arnold D. Robbins     <arnold@skeeve.com>

        * dfa.c (wcscoll): Create for VMS.          * Makefile.am
(dist-hook): Run sed scripts to make pc/config.h.

2011-10-24  Eli Zaretskii  <eliz@gnu.org>

        * builtin.c [HAVE_POPEN_H]: Include "popen.h".          *
README.git: Update for pc/ systems.

2011-10-21         Arnold D. Robbins     <arnold@skeeve.com>

        *  Makefile.am (distcleancheck_listfiles): Added, per ad-
vice    from            Stefano    Lattarini    <stefano.lattari-
ni@gmail.com>.           *  dfa.c: Additional faking of mbsupport
for systems without it;         mainly VMS.

2011-10-21  Stefano Lattarini  <stefano.lattarini@gmail.com>

        * configure.ac (AM_C_PROTOTYPES):  Remove  call  to  this
macro.           The  comments in configure.ac said that the call
to AM_C_PROTOTYPES         was needed for dfa.h, synced from  GNU
grep;  but  this  statement  is          not true anymore in grep
since commit v2.5.4-24-g9b5e7d4 "replace         AC_CHECK_*  with
gnulib  modules",  dating  back to 2009-11-26.  Also,         the
support for automatic de-ANSI-fication  has  been  deprecated  in
        automake  1.11.2,  and  will be removed altogether in au-
tomake  1.12.           *  vms/vms-conf.h  (PROTOTYPES,  __PROTO-
TYPES):  Remove these #define,         they are not used anymore.
        * pc/config.h (PROTOTYPES): Likewise.

2011-10-18         Dave Pitts            <dpitts@cozx.com>

        * dfa.c: Move some decls to the top  of  their  functions
for         C90 compilers.

2011-10-18         Arnold D. Robbins     <arnold@skeeve.com>

        * builtin.c (do_strftime): Add check for negative / over-
flowed         time_t value with fatal error. Thanks  to  Hermann
Peifer          <peifer@gmx.eu>  for  the  bug report.          *
dfa.c  (setbit_wc):  Non-MBS  version.   Add   a   return   false
        since  VMS compiler doesn't understand that abort doesn't
return.

2011-10-10         Arnold D. Robbins     <arnold@skeeve.com>

        * builtin.c (do_sub): Init textlen to zero to avoid  "may
be          used  uninitialized"  warning. Thanks to Corinna Vin-
schen for          pointing  this  out.           *  eval.c  (un-
wind_stack): Add parentheses around condition in while         to
avoid overzealous warning from GCC.

2011-09-30  Eli Zaretskii  <eliz@gnu.org>

        *  io.c  (remap_std_file):  Fix  non-portable  code  that
caused         redirected "print" to fail if a previous read from
standard input         returned EOF.  Reported  by  David  Millis
<tvtronix@yahoo.com>.           (remap_std_file):  Per Eli's sug-
gestion, removed the leading close         of oldfd and will  let
dup2 do the close for us.

2011-10-11         John Haque     <j.eh@mchsi.com>

        *   symbol.c:  Add  licence  notice.           *  array.c
(PREC_NUM, PREC_STR): Define as macros.

2011-10-09         Arnold D. Robbins     <arnold@skeeve.com>

        * dfa.c: Sync with GNU grep.

2011-10-07         John Haque     <j.eh@mchsi.com>

        Tail recursion optimization.          * awkgram.y  (gram-
mar,   mk_function):   Recognize   tail-recursive          calls.
        *  awk.h  (tail_call,   num_tail_calls):   New   defines.
        *  eval.c  (setup_frame):  Reuse  function call stack for
        tail-recursive  calls.           (dump_fcall_stack):  Re-
worked.

2011-10-04         Arnold D. Robbins     <arnold@skeeve.com>

        *  awk.h,  main.c (gawk_mb_cur_max): Make it a constant 1
when         MBS_SUPPORT isn't available to allow GCC  dead  code
constant         expression computation and dead code elimination
to help out.

2011-10-02         Arnold D. Robbins     <arnold@skeeve.com>

        * io.c (rsnullscan, get_a_record): Fix  the  cases  where
terminators          are  incomplete  when RS == "". Also fix the
case where the new value         is shorter  than  the  old  one.
Based  on patch from Rogier         <rogier777@gmail.com> as sub-
mitted by Jeroen Schot         <schot@A-Eskwadraat.nl>.

2011-09-24         Arnold D. Robbins     <arnold@skeeve.com>

        * eval.c, io.c, re.c: Fix some spelling errors. Thanks to
        Jeroen Schot <schot@A-Eskwadraat.nl>.

2011-09-21         Arnold D. Robbins     <arnold@skeeve.com>

        * dfa.c, mbsupport.h: Sync with GNU grep. Large amount of
changes         that remove many ifdefs, moving  many  conditions
for  multibyte          support  into  regular C code and relying
GCC's dead code optimization         to eliminate code that won't
be needed.          * dfa.c: For gawk, add a number of additional
defines so that things         will compile if MBS_SUPPORT is  0.
        *  array.c, awk.h, awkgram.y, builtin.c, eval.c, field.c,
main.c,         node.c, re.c: Change `#ifdef MBS_SUPPORT' to `#if
MBS_SUPPORT'.           * awk.h, regex_internal.h: Move NO_MBSUP-
PORT handling to ...          * mbsupport.h: ...here.

2011-09-16         Arnold D. Robbins     <arnold@skeeve.com>

        * dfa.c: Sync with GNU grep.

2011-09-08         John Haque     <j.eh@mchsi.com>

        Optimization  for  compound  assignment,  increment   and
        decrement  operators;  Avoid  unref and make_number calls
        when there is no extra references to the value NODE.

2011-09-03         Arnold D. Robbins     <arnold@skeeve.com>

        * dfa.c: Sync with GNU grep.

2011-08-31         John Haque     <j.eh@mchsi.com>

        Grammar related changes: Simplify  grammar  for  user-de-
fined         functions and general cleanups.

        *  symbol.c:  New file.          * awkgram.y: Move symbol
table related routines to the         new  file.           (rule,
func_name,      function_prologue,     param_list):     Reworked.
        (install_function, check_params):  Do  all  error  checks
        for the function name and parameters before installing in
        the symbol table.          (mk_function): Finalize  func-
tion     definition.              (func_install,    append_param,
dup_params): Nuked.          * symbol.c  (make_params):  allocate
function  parameter  nodes          for the symbol table. Use the
hash node as Node_param_list;         Saves a NODE for  each  pa-
rameter.           (install_params):  Install function parameters
into the symbol         table.           (remove_params):  Remove
parameters  out  of the symbol table.          * awk.h (parmlist,
FUNC): Nuked.          (fparms): New define.

        Dynamically loaded function parameters  are  now  handled
like         those for a builtin.

        *   awk.h  (Node_ext_func,  Op_ext_builtin):  New  types.
        (Op_ext_func): Nuked.           *  ext.c  (make_builtin):
Simplified.           (get_curfunc_arg_count): Nuked; Use the ar-
gument  'nargs'  of          the  extension   function   instead.
        (get_argument,  get_actual_argument):  Adjust.          *
eval.c (r_interpret): Update  case  Op_func_call  for  a  dynamic
        extension function. Handle the new opcode Op_ext_builtin.
        * pprint (profile.c): Adjust.

        Use a single variable to process gawk options.

        * awk.h (do_flags): New  variable.           (DO_LINT_IN-
VALID,       DO_LINT_ALL,       DO_LINT_OLD,      DO_TRADITIONAL,
        DO_POSIX,   DO_INTL,    DO_NON_DEC_DATA,    DO_INTERVALS,
        DO_PROFILING, DO_DUMP_VARS, DO_TIDY_MEM,         DO_SAND-
BOX): New defines.          (do_traditional, do_posix,  do_inter-
vals,    do_intl,            do_non_decimal_data,   do_profiling,
do_dump_vars,            do_tidy_mem,    do_sandbox,     do_lint,
        do_lint_old):  Defined  as macros.          * main.c: Re-
move definitions of the  do_XX  variables.  Add          do_flags
definition.          * debug.c (execute_code, do_eval, parse_con-
dition): Save         do_flags before executing/parsing  and  re-
store afterwards.

        Nuke  PERM flag. Always increment/decrement the reference
        count  for  a  Node_val.  Simplifies  macros  and  avoids
        occasional memory leaks, specially in the debugger.

        *  awk.h  (UPREF,  DEREF,  dupnode,  unref):  Simplified.
        (mk_number): Nuked.          * (*.c): Increment the  ref-
erence count of Nnull_string before         assigning as a value.

        Revamped  array  handling  mechanism  for  more speed and
        less memory consumption.

        * awk.h (union  bucket_item,  BUCKET):  New  definitions.
Used  as          bucket  elements for the hash table implementa-
tions  of  arrays;          40%  space  saving  in  32  bit  x86.
        (buckets, nodes, array_funcs, array_base, array_capacity,
        xarray,  alookup,  aexists,   aclear,   aremove,   alist,
        acopy,  adump,  NUM_AFUNCS):  New  defines.          (ar-
ray_empty): New macro to test for an empty  array.           (as-
soc_lookup,  in_array):  Defined  as  macros.           (enum as-
soc_list_flags): New declaration.          (Node_ahash,  NUMIND):
Nuked.           *  eval.c  (r_interpret):  Adjust  cases Op_sub-
script,          Op_subscript_lhs,  Op_store_var  and   Op_array-
for_incr.          * node.c (dupnode, unref): Removed code relat-
ed to Node_ahash.          * str_array.c: New file to handle  ar-
ray with string indices.          * int_array.c: New file to han-
dle array with  integer  indices.           *  cint_array.c:  New
file.  Special  handling of arrays with         (mostly) consecu-
tive integer indices.

        Memory pool management reworked to handle NODE and  BUCK-
ET.

        * awk.h (struct block_item, BLOCK, block_id): New defini-
tions.          (getblock, freeblock): New macros.          (get-
bucket,  freebucket):  New  macros  to  allocate  and  deallocate
        a   BUCKET.            (getnode,   freenode):   Adjusted.
        * node.c (more_nodes): Nuked.          (more_blocks): New
routine to allocate blocks of memory.

2011-08-24         Arnold D. Robbins     <arnold@skeeve.com>

        Fix pty co-process communication on Ubuntu GNU/Linux.

        * io.c: Add include of <sys/ioctl.h> to get definition of
TIOCSCTTY.           (two_way_open):  Move call for this ioctl to
after setsid() call.

2011-08-23         Arnold D. Robbins     <arnold@skeeve.com>

        *  regex_internal.c  (re_string_fetch_byte_case):  Remove
        __attribute((pure)) since it causes failures with gcc -O2
        -fno-inline.  Thanks  to  Neil  Cahill   <ncahill_alt@ya-
hoo.com>         for reporting the bug.

2011-08-10         John Haque      <j.eh@mchsi.com>

        BEGINFILE/ENDFILE related code redone.

        * awk.h (prev_frame_size, has_endfile, target_get_record,
        target_newfile):  New   defines.            *   awkgram.y
(mk_program):    Initialize    has_endfile    appropriately   for
        Op_get_record.          (parse_program):  Initialize  new
jump targets for         Op_get_record and Op_newfile.          *
eval.c (unwind_stack): Change argument to number of         items
to  be  left  in  the  stack.  Adjust  code.          (pop_fcall,
pop_stack):  New  defines.            (setup_frame):   Initialize
prev_frame_size.          (exec_state, EXEC_STATE): New structure
and   typedef.            (exec_state_stack):    New    variable.
        (push_exec_state,  pop_exec_state): New functions to save
and         later retrieve an execution state.          (r_inter-
pret):  Use  the  new  functions and the defines in         cases
Op_K_getline,        Op_after_beginfile,        Op_after_endfile,
        Op_newfile  and  Op_K_exit.          * io.c (after_begin-
file): When skipping a file using nextfile,          return  zero
in  case  there was an error opening the file.          (has_end-
file): Nuke global variable.          (inrec): Add a second argu-
ment to pass errno to the calling         routine.          * de-
bug.c (print_instruction): Update cases.

2011-08-10         Arnold D. Robbins     <arnold@skeeve.com>

        Fix (apparently long-standing) problem with  FIELDWIDTHS.
        Thanks to Johannes Meixner <jsmeix@suse.de>.

        * field.c (set_FIELDWIDTHS): Adjust calculations.

        Fix  problem  with  FPAT, reported by "T. X. G." <leopar-
die333@yahoo.com>

        * awk.h (Regexp): Add new member 'non_empty'.           *
field.c (fpat_parse_field): Save/restore local variable non_empty
        from member in Regexp struct.

2011-08-09         Arnold D. Robbins     <arnold@skeeve.com>

        Fix pty issue reported by "T.  X.  G."  <leopardie333@ya-
hoo.com>

        *  configure.ac:  Check  for setsid.          * awk.h: If
not HAVE_SETSID define it as  an  empty  macro.           *  io.c
(two_way_open): Call setsid if using pty's.

2011-07-29  Eli Zaretskii  <eliz@gnu.org>

        *  builtin.c  (format_tree):  Rename small -> small_flag,
        big -> big_flag, bigbig -> bigbig_flag.  Solves  compila-
tion errors         when building Gawk with libsigsegv on MS-Win-
dows,     see             https://lists.gnu.org/archive/html/bug-
gawk/2011-07/msg00029.html.

2011-07-28         Arnold D. Robbins     <arnold@skeeve.com>

        *  builtin.c  (do_sub):  Revert  to gawk 3.1 behavior for
backslash         handling. It was stupid to think I could  break
compatibility.            Thanks   to   John  Ellson  <ellson@re-
search.att.com> for raising         the issue.

2011-07-26         John Haque      <j.eh@mchsi.com>

        *  eval.c  (r_interpret):  In  cases  Op_var_assign   and
Op_field_assign,          include  Op_K_getline_redir in the test
for skipping the routine.

2011-07-26         John Haque      <j.eh@mchsi.com>

        Fix  handling  of  assign  routines  for  'getline  var'.
        Rework the previous fix for (g)sub.

        *  awk.h: New define assign_ctxt for use in Op_var_assign
        and Op_field_assign opcodes. Remove define  AFTER_ASSIGN.
        *  awkgram.y (snode, mk_getline): Initialize assign_ctxt.
        * builtin.c (do_sub): Adjust to take only the  first  two
        arguments.           *  eval.c  (r_interpret):  In  cases
Op_var_assign and Op_field_assign,         skip  the  routine  as
appropriate.   Adjust   case  Op_sub_builtin.           *  main.c
(get_spec_varname): New function.          *  debug.c  (print_in-
struction):  Use the new function to get         special variable
name.

2011-07-17         Arnold D. Robbins     <arnold@skeeve.com>

        * main.c (varinit): Mark FPAT as NON_STANDARD. Thanks  to
        Wolfgang Seeberg <wolfgang.seeberg@yahoo.com> for the re-
port.          * Makefile.am (EXTRA_DIST): Add po/README, per ad-
vice  from          Bruno Haible.          * dfa.c: Sync with GNU
grep.          * xalloc.h (xzalloc): New function, from GNU grep,
for dfa.c.          * README: Note that bug list is really a real
mailing list.

2011-07-16         Arnold D. Robbins     <arnold@skeeve.com>

        *  Makefile.am  (AUTOMAKE_OPTIONS):  Removed.           *
configure.ac  (AM_INIT_AUTOMAKE):  Removed  dist-bzip2 option, on
        advice from Karl Berry.

2011-07-15         John Haque      <j.eh@mchsi.com>

        * awk.h  (Op_sub_builtin):  New  opcode.           (GSUB,
GENSUB,     AFTER_ASSIGN,     LITERAL):     New     flags     for
        Op_sub_builtin.          * awkgram.y  (struct  tokentab):
Change  opcode to        Op_sub_builtin         for sub, gsub and
gensub.          (snode): Update processing of sub, gsub and gen-
sub.           *  builtin.c  (do_sub,  do_gsub, do_gensub): Nuke.
        (sub_common): Renamed to do_sub. Relocate gensub argument
        handling code from do_gensub to here; Simplify the code a
        little  bit.           *  eval.c  (r_interpret):   Handle
Op_sub_builtin. Avoid field         re-splitting or $0 rebuilding
if (g)sub target string is         a field and  no  substitutions
were  done.           *  pprint (profile.c): Add case for the new
opcode.          * print_instruction (debug.c): Ditto.

        Take out translation for errno strings;  extensions  will
        need to use their own domain.

        *  awk.h  (enum  errno_translate): Removed.          (up-
date_ERRNO_string): Remove second translate parameter.          *
eval.c  (update_ERRNO_string):  Remove second translate parameter
        and code that  used  it.           *  gawkapi.h  (api_up-
date_ERRNO_string):  Remove  third  translate          parameter.
        *  gawkapi.c  (api_update_ERRNO_string):   Remove   third
translate           parameter   and  change  call  to  update_ER-
RNO_string.          * io.c (do_close): Fix  call  to  update_ER-
RNO_string.

2011-07-15         Arnold D. Robbins     <arnold@skeeve.com>

        *  awk.h:  Typo fix: "loner" --> longer. Thanks to Nelson
Beebe.          * builtin.c (efwrite): Fix flushing test back  to
what  it  was          in  3.1.8. Thanks to Strefil <strefil@yan-
dex.ru> for the problem         report.          *  configure.ac:
Bump version to 4.0.0a for stable branch.

2011-06-24         Arnold D. Robbins     <arnold@skeeve.com>

        *  Makefile.am  (EXTRA_DIST): Add ChangeLog.0.          *
4.0.0: Remake the tar ball.

2011-06-23         Arnold D. Robbins     <arnold@skeeve.com>

        * configure.ac: Update version to 4.0.0.          *  con-
figure:  Regenerated.           *  ChangeLog.0: Rotated ChangeLog
into this file.          * ChangeLog: Created anew for gawk 4.0.0
and  on.           *  README:  Bump  version to 4.0.0.          *
4.0.0: Release tar ball made.