Finish excising isalpha and isalnum. Document.

1 files changed, 458 insertions, 451 deletions

diff --git a/doc/gawk.info b/doc/gawk.info
index bd9ddbab..d94ea8bf 100644
--- a/doc/gawk.info
+++ b/doc/gawk.info
@@ -7437,8 +7437,11 @@ File: gawk.info,  Node: Using Variables,  Next: Assignment Options,  Up: Variabl
 Variables let you give names to values and refer to them later.
 Variables have already been used in many of the examples.  The name of
 a variable must be a sequence of letters, digits, or underscores, and
-it may not begin with a digit.  Case is significant in variable names;
-`a' and `A' are distinct variables.
+it may not begin with a digit.  Here, a "letter" is any one of the 52
+upper- and lowercase English letters.  Other characters that may be
+defined as letters in non-English locales are not valid in variable
+names.  Case is significant in variable names; `a' and `A' are distinct
+variables.
 
    A variable name is a valid expression by itself; it represents the
 variable's current value.  Variables are given new values with
@@ -10299,8 +10302,11 @@ Options::), they are not special.
 
     `PROCINFO["identifiers"]'
           A subarray, indexed by the names of all identifiers used in
-          the text of the AWK program.  For each identifier, the value
-          of the element is one of the following:
+          the text of the AWK program.  An "identifier" is simply the
+          name of a variable (be it scalar or array), built-in
+          function, user-defined function, or extension function.  For
+          each identifier, the value of the element is one of the
+          following:
 
          `"array"'
                The identifier is an array.
@@ -13300,9 +13306,10 @@ starting to execute any of it.
 
 Here, NAME is the name of the function to define.  A valid function
 name is like a valid variable name: a sequence of letters, digits, and
-underscores that doesn't start with a digit.  Within a single `awk'
-program, any particular name can only be used as a variable, array, or
-function.
+underscores that doesn't start with a digit.  Here too, only the 52
+upper- and lowercase English letters may be used in a function name.
+Within a single `awk' program, any particular name can only be used as
+a variable, array, or function.
 
    PARAMETER-LIST is an optional list of the function's arguments and
 local variable names, separated by commas.  When the function is called,
@@ -31733,7 +31740,7 @@ Index
 * common extensions, \x escape sequence: Escape Sequences.    (line  61)
 * common extensions, BINMODE variable:   PC Using.            (line  33)
 * common extensions, delete to delete entire arrays: Delete.  (line  39)
-* common extensions, func keyword:       Definition Syntax.   (line  92)
+* common extensions, func keyword:       Definition Syntax.   (line  93)
 * common extensions, length() applied to an array: String Functions.
                                                               (line 197)
 * common extensions, RS as a regexp:     gawk split records.  (line   6)
@@ -31845,7 +31852,7 @@ Index
                                                               (line  46)
 * dark corner, FILENAME variable <1>:    Auto-set.            (line  90)
 * dark corner, FILENAME variable:        Getline Notes.       (line  19)
-* dark corner, FNR/NR variables:         Auto-set.            (line 305)
+* dark corner, FNR/NR variables:         Auto-set.            (line 308)
 * dark corner, format-control characters: Control Letters.    (line  18)
 * dark corner, FS as null string:        Single Character Fields.
                                                               (line  20)
@@ -32069,7 +32076,7 @@ Index
                                                               (line  26)
 * differences in awk and gawk, RS/RT variables: gawk split records.
                                                               (line  58)
-* differences in awk and gawk, RT variable: Auto-set.         (line 261)
+* differences in awk and gawk, RT variable: Auto-set.         (line 264)
 * differences in awk and gawk, single-character fields: Single Character Fields.
                                                               (line   6)
 * differences in awk and gawk, split() function: String Functions.
@@ -32077,7 +32084,7 @@ Index
 * differences in awk and gawk, strings:  Scalar Constants.    (line  20)
 * differences in awk and gawk, strings, storing: gawk split records.
                                                               (line  77)
-* differences in awk and gawk, SYMTAB variable: Auto-set.     (line 265)
+* differences in awk and gawk, SYMTAB variable: Auto-set.     (line 268)
 * differences in awk and gawk, TEXTDOMAIN variable: User-modified.
                                                               (line 152)
 * differences in awk and gawk, trunc-mod operation: Arithmetic Ops.
@@ -32232,7 +32239,7 @@ Index
                                                               (line   6)
 * extension API version:                 Extension Versioning.
                                                               (line   6)
-* extension API, version number:         Auto-set.            (line 228)
+* extension API, version number:         Auto-set.            (line 231)
 * extension example:                     Extension Example.   (line   6)
 * extension registration:                Registration Functions.
                                                               (line   6)
@@ -32251,7 +32258,7 @@ Index
 * extensions, common, BINMODE variable:  PC Using.            (line  33)
 * extensions, common, delete to delete entire arrays: Delete. (line  39)
 * extensions, common, fflush() function: I/O Functions.       (line  43)
-* extensions, common, func keyword:      Definition Syntax.   (line  92)
+* extensions, common, func keyword:      Definition Syntax.   (line  93)
 * extensions, common, length() applied to an array: String Functions.
                                                               (line 197)
 * extensions, common, RS as a regexp:    gawk split records.  (line   6)
@@ -32384,7 +32391,7 @@ Index
                                                               (line  12)
 * FNR variable <1>:                      Auto-set.            (line  99)
 * FNR variable:                          Records.             (line   6)
-* FNR variable, changing:                Auto-set.            (line 305)
+* FNR variable, changing:                Auto-set.            (line 308)
 * for statement:                         For Statement.       (line   6)
 * for statement, looping over arrays:    Scanning an Array.   (line  20)
 * fork() extension function:             Extension Sample Fork.
@@ -32470,7 +32477,7 @@ Index
                                                               (line   6)
 * functions, names of <1>:               Definition Syntax.   (line  23)
 * functions, names of:                   Arrays.              (line  18)
-* functions, recursive:                  Definition Syntax.   (line  82)
+* functions, recursive:                  Definition Syntax.   (line  83)
 * functions, string-translation:         I18N Functions.      (line   6)
 * functions, undefined:                  Pass By Value/Reference.
                                                               (line  71)
@@ -32485,7 +32492,7 @@ Index
 * G-d:                                   Acknowledgments.     (line  92)
 * Garfinkle, Scott:                      Contributors.        (line  34)
 * gawk program, dynamic profiling:       Profiling.           (line 179)
-* gawk version:                          Auto-set.            (line 203)
+* gawk version:                          Auto-set.            (line 206)
 * gawk, ARGIND variable in:              Other Arguments.     (line  12)
 * gawk, awk and <1>:                     This Manual.         (line  14)
 * gawk, awk and:                         Preface.             (line  21)
@@ -32562,14 +32569,14 @@ Index
 * gawk, regular expressions, operators:  GNU Regexp Operators.
                                                               (line   6)
 * gawk, regular expressions, precedence: Regexp Operators.    (line 161)
-* gawk, RT variable in <1>:              Auto-set.            (line 261)
+* gawk, RT variable in <1>:              Auto-set.            (line 264)
 * gawk, RT variable in <2>:              Multiple Line.       (line 129)
 * gawk, RT variable in:                  awk split records.   (line 124)
 * gawk, See Also awk:                    Preface.             (line  34)
 * gawk, source code, obtaining:          Getting.             (line   6)
 * gawk, splitting fields and:            Constant Size.       (line  88)
 * gawk, string-translation functions:    I18N Functions.      (line   6)
-* gawk, SYMTAB array in:                 Auto-set.            (line 265)
+* gawk, SYMTAB array in:                 Auto-set.            (line 268)
 * gawk, TEXTDOMAIN variable in:          User-modified.       (line 152)
 * gawk, timestamps:                      Time Functions.      (line   6)
 * gawk, uses for:                        Preface.             (line  34)
@@ -32655,7 +32662,7 @@ Index
 * Grigera, Juan:                         Contributors.        (line  57)
 * group database, reading:               Group Functions.     (line   6)
 * group file:                            Group Functions.     (line   6)
-* group ID of gawk user:                 Auto-set.            (line 176)
+* group ID of gawk user:                 Auto-set.            (line 179)
 * groups, information about:             Group Functions.     (line   6)
 * gsub <1>:                              String Functions.    (line 139)
 * gsub:                                  Using Constant Regexps.
@@ -32949,7 +32956,7 @@ Index
 * mawk utility <3>:                      Concatenation.       (line  36)
 * mawk utility <4>:                      Getline/Pipe.        (line  62)
 * mawk utility:                          Escape Sequences.    (line 130)
-* maximum precision supported by MPFR library: Auto-set.      (line 217)
+* maximum precision supported by MPFR library: Auto-set.      (line 220)
 * McIlroy, Doug:                         Glossary.            (line 149)
 * McPhee, Patrick:                       Contributors.        (line 100)
 * message object files:                  Explaining gettext.  (line  42)
@@ -32962,7 +32969,7 @@ Index
 * messages from extensions:              Printing Messages.   (line   6)
 * metacharacters in regular expressions: Regexp Operators.    (line   6)
 * metacharacters, escape sequences for:  Escape Sequences.    (line 136)
-* minimum precision supported by MPFR library: Auto-set.      (line 220)
+* minimum precision supported by MPFR library: Auto-set.      (line 223)
 * mktime:                                Time Functions.      (line  25)
 * modifiers, in format specifiers:       Format Modifiers.    (line   6)
 * monetary information, localization:    Explaining gettext.  (line 104)
@@ -33024,7 +33031,7 @@ Index
 * not Boolean-logic operator:            Boolean Ops.         (line   6)
 * NR variable <1>:                       Auto-set.            (line 124)
 * NR variable:                           Records.             (line   6)
-* NR variable, changing:                 Auto-set.            (line 305)
+* NR variable, changing:                 Auto-set.            (line 308)
 * null strings <1>:                      Basic Data Typing.   (line  26)
 * null strings <2>:                      Truth Values.        (line   6)
 * null strings <3>:                      Regexp Field Splitting.
@@ -33138,7 +33145,7 @@ Index
 * p debugger command (alias for print):  Viewing And Changing Data.
                                                               (line  36)
 * Papadopoulos, Panos:                   Contributors.        (line 128)
-* parent process ID of gawk process:     Auto-set.            (line 185)
+* parent process ID of gawk process:     Auto-set.            (line 188)
 * parentheses (), in a profile:          Profiling.           (line 146)
 * parentheses (), regexp operator:       Regexp Operators.    (line  81)
 * password file:                         Passwd Functions.    (line  16)
@@ -33194,7 +33201,7 @@ Index
                                                               (line  65)
 * portability, deleting array elements:  Delete.              (line  56)
 * portability, example programs:         Library Functions.   (line  42)
-* portability, functions, defining:      Definition Syntax.   (line 108)
+* portability, functions, defining:      Definition Syntax.   (line 109)
 * portability, gawk:                     New Ports.           (line   6)
 * portability, gettext library and:      Explaining gettext.  (line  11)
 * portability, internationalization and: I18N Portability.    (line   6)
@@ -33240,7 +33247,7 @@ Index
                                                               (line  40)
 * POSIX awk, field separators and:       Fields.              (line   6)
 * POSIX awk, FS variable and:            User-modified.       (line  60)
-* POSIX awk, function keyword in:        Definition Syntax.   (line  92)
+* POSIX awk, function keyword in:        Definition Syntax.   (line  93)
 * POSIX awk, functions and, gsub()/sub(): Gory Details.       (line  90)
 * POSIX awk, functions and, length():    String Functions.    (line 176)
 * POSIX awk, GNU long options and:       Options.             (line  15)
@@ -33301,8 +33308,8 @@ Index
 * printing, unduplicated lines of text:  Uniq Program.        (line   6)
 * printing, user information:            Id Program.          (line   6)
 * private variables:                     Library Names.       (line  11)
-* process group idIDof gawk process:     Auto-set.            (line 179)
-* process ID of gawk process:            Auto-set.            (line 182)
+* process group idIDof gawk process:     Auto-set.            (line 182)
+* process ID of gawk process:            Auto-set.            (line 185)
 * processes, two-way communications with: Two-way I/O.        (line   6)
 * processing data:                       Basic High Level.    (line   6)
 * PROCINFO array <1>:                    Passwd Functions.    (line   6)
@@ -33313,7 +33320,7 @@ Index
 * PROCINFO array, and user and group ID numbers: Id Program.  (line  15)
 * PROCINFO array, testing the field splitting: Passwd Functions.
                                                               (line 161)
-* PROCINFO array, uses:                  Auto-set.            (line 238)
+* PROCINFO array, uses:                  Auto-set.            (line 241)
 * PROCINFO, values of sorted_in:         Controlling Scanning.
                                                               (line  26)
 * profiling awk programs:                Profiling.           (line   6)
@@ -33329,7 +33336,7 @@ Index
 * programming conventions, functions, calling: Calling Built-in.
                                                               (line  10)
 * programming conventions, functions, writing: Definition Syntax.
-                                                              (line  64)
+                                                              (line  65)
 * programming conventions, gawk extensions: Internal File Ops.
                                                               (line  45)
 * programming conventions, private variable names: Library Names.
@@ -33399,7 +33406,7 @@ Index
 * records, splitting input into:         Records.             (line   6)
 * records, terminating:                  awk split records.   (line 124)
 * records, treating files as:            gawk split records.  (line  92)
-* recursive functions:                   Definition Syntax.   (line  82)
+* recursive functions:                   Definition Syntax.   (line  83)
 * redirect gawk output, in debugger:     Debugger Info.       (line  72)
 * redirection of input:                  Getline/File.        (line   6)
 * redirection of output:                 Redirection.         (line   6)
@@ -33477,7 +33484,7 @@ Index
 * right shift:                           Bitwise Functions.   (line  52)
 * right shift, bitwise:                  Bitwise Functions.   (line  32)
 * Ritchie, Dennis:                       Basic Data Typing.   (line  54)
-* RLENGTH variable:                      Auto-set.            (line 248)
+* RLENGTH variable:                      Auto-set.            (line 251)
 * RLENGTH variable, match() function and: String Functions.   (line 224)
 * Robbins, Arnold <1>:                   Future Extensions.   (line   6)
 * Robbins, Arnold <2>:                   Bugs.                (line  32)
@@ -33503,9 +33510,9 @@ Index
 * RS variable:                           awk split records.   (line  12)
 * RS variable, multiline records and:    Multiple Line.       (line  17)
 * rshift:                                Bitwise Functions.   (line  52)
-* RSTART variable:                       Auto-set.            (line 254)
+* RSTART variable:                       Auto-set.            (line 257)
 * RSTART variable, match() function and: String Functions.    (line 224)
-* RT variable <1>:                       Auto-set.            (line 261)
+* RT variable <1>:                       Auto-set.            (line 264)
 * RT variable <2>:                       Multiple Line.       (line 129)
 * RT variable:                           awk split records.   (line 124)
 * Rubin, Paul <1>:                       Contributors.        (line  15)
@@ -33525,7 +33532,7 @@ Index
 * scanning arrays:                       Scanning an Array.   (line   6)
 * scanning multidimensional arrays:      Multiscanning.       (line  11)
 * Schorr, Andrew <1>:                    Contributors.        (line 133)
-* Schorr, Andrew <2>:                    Auto-set.            (line 288)
+* Schorr, Andrew <2>:                    Auto-set.            (line 291)
 * Schorr, Andrew:                        Acknowledgments.     (line  60)
 * Schreiber, Bert:                       Acknowledgments.     (line  38)
 * Schreiber, Rita:                       Acknowledgments.     (line  38)
@@ -33569,7 +33576,7 @@ Index
 * set directory of message catalogs:     I18N Functions.      (line  12)
 * set watchpoint:                        Viewing And Changing Data.
                                                               (line  67)
-* shadowing of variable values:          Definition Syntax.   (line  70)
+* shadowing of variable values:          Definition Syntax.   (line  71)
 * shell quoting, rules for:              Quoting.             (line   6)
 * shells, piping commands into:          Redirection.         (line 142)
 * shells, quoting:                       Using Shell Variables.
@@ -33609,7 +33616,7 @@ Index
                                                               (line 116)
 * sidebar, Changing FS Does Not Affect the Fields: Field Splitting Summary.
                                                               (line  38)
-* sidebar, Changing NR and FNR:          Auto-set.            (line 303)
+* sidebar, Changing NR and FNR:          Auto-set.            (line 306)
 * sidebar, Controlling Output Buffering with system(): I/O Functions.
                                                               (line 138)
 * sidebar, Escape Sequences for Metacharacters: Escape Sequences.
@@ -33772,9 +33779,9 @@ Index
 * substr:                                String Functions.    (line 479)
 * substring:                             String Functions.    (line 479)
 * Sumner, Andrew:                        Other Versions.      (line  64)
-* supplementary groups of gawk process:  Auto-set.            (line 233)
+* supplementary groups of gawk process:  Auto-set.            (line 236)
 * switch statement:                      Switch Statement.    (line   6)
-* SYMTAB array:                          Auto-set.            (line 265)
+* SYMTAB array:                          Auto-set.            (line 268)
 * syntactic ambiguity: /= operator vs. /=.../ regexp constant: Assignment Ops.
                                                               (line 148)
 * system:                                I/O Functions.       (line  75)
@@ -33927,7 +33934,7 @@ Index
 * variables:                             Other Features.      (line   6)
 * variables, assigning on command line:  Assignment Options.  (line   6)
 * variables, built-in <1>:               Built-in Variables.  (line   6)
-* variables, built-in:                   Using Variables.     (line  20)
+* variables, built-in:                   Using Variables.     (line  23)
 * variables, built-in, -v option, setting with: Options.      (line  40)
 * variables, built-in, conveying information: Auto-set.       (line   6)
 * variables, flag:                       Boolean Ops.         (line  67)
@@ -33940,22 +33947,22 @@ Index
 * variables, getline command into, using: Getline/Variable.   (line   6)
 * variables, global, for library functions: Library Names.    (line  11)
 * variables, global, printing list of:   Options.             (line  93)
-* variables, initializing:               Using Variables.     (line  20)
+* variables, initializing:               Using Variables.     (line  23)
 * variables, local to a function:        Variable Scope.      (line   6)
 * variables, names of:                   Arrays.              (line  18)
 * variables, private:                    Library Names.       (line  11)
 * variables, setting:                    Options.             (line  32)
-* variables, shadowing:                  Definition Syntax.   (line  70)
+* variables, shadowing:                  Definition Syntax.   (line  71)
 * variables, types of:                   Assignment Ops.      (line  40)
 * variables, types of, comparison expressions and: Typing and Comparison.
                                                               (line   9)
 * variables, uninitialized, as array subscripts: Uninitialized Subscripts.
                                                               (line   6)
 * variables, user-defined:               Variables.           (line   6)
-* version of gawk:                       Auto-set.            (line 203)
-* version of gawk extension API:         Auto-set.            (line 228)
-* version of GNU MP library:             Auto-set.            (line 214)
-* version of GNU MPFR library:           Auto-set.            (line 210)
+* version of gawk:                       Auto-set.            (line 206)
+* version of gawk extension API:         Auto-set.            (line 231)
+* version of GNU MP library:             Auto-set.            (line 217)
+* version of GNU MPFR library:           Auto-set.            (line 213)
 * vertical bar (|):                      Regexp Operators.    (line  70)
 * vertical bar (|), | operator (I/O) <1>: Precedence.         (line  65)
 * vertical bar (|), | operator (I/O):    Getline/Pipe.        (line   9)
@@ -34184,411 +34191,411 @@ Node: Regexp Constants318867
 Node: Using Constant Regexps319392
 Node: Variables322464
 Node: Using Variables323119
-Node: Assignment Options324843
-Node: Conversion326718
-Node: Strings And Numbers327242
-Ref: Strings And Numbers-Footnote-1330304
-Node: Locale influences conversions330413
-Ref: table-locale-affects333130
-Node: All Operators333718
-Node: Arithmetic Ops334348
-Node: Concatenation336853
-Ref: Concatenation-Footnote-1339672
-Node: Assignment Ops339778
-Ref: table-assign-ops344761
-Node: Increment Ops346064
-Node: Truth Values and Conditions349502
-Node: Truth Values350585
-Node: Typing and Comparison351634
-Node: Variable Typing352427
-Node: Comparison Operators356079
-Ref: table-relational-ops356489
-Node: POSIX String Comparison360039
-Ref: POSIX String Comparison-Footnote-1361123
-Node: Boolean Ops361261
-Ref: Boolean Ops-Footnote-1365600
-Node: Conditional Exp365691
-Node: Function Calls367418
-Node: Precedence371298
-Node: Locales374967
-Node: Expressions Summary376598
-Node: Patterns and Actions379139
-Node: Pattern Overview380255
-Node: Regexp Patterns381932
-Node: Expression Patterns382475
-Node: Ranges386255
-Node: BEGIN/END389361
-Node: Using BEGIN/END390123
-Ref: Using BEGIN/END-Footnote-1392859
-Node: I/O And BEGIN/END392965
-Node: BEGINFILE/ENDFILE395236
-Node: Empty398167
-Node: Using Shell Variables398484
-Node: Action Overview400767
-Node: Statements403094
-Node: If Statement404942
-Node: While Statement406440
-Node: Do Statement408484
-Node: For Statement409640
-Node: Switch Statement412792
-Node: Break Statement415180
-Node: Continue Statement417221
-Node: Next Statement419046
-Node: Nextfile Statement421416
-Node: Exit Statement424073
-Node: Built-in Variables426477
-Node: User-modified427604
-Ref: User-modified-Footnote-1435293
-Node: Auto-set435355
-Ref: Auto-set-Footnote-1448037
-Ref: Auto-set-Footnote-2448242
-Node: ARGC and ARGV448298
-Node: Pattern Action Summary452202
-Node: Arrays454425
-Node: Array Basics455974
-Node: Array Intro456800
-Ref: figure-array-elements458773
-Ref: Array Intro-Footnote-1461297
-Node: Reference to Elements461425
-Node: Assigning Elements463875
-Node: Array Example464366
-Node: Scanning an Array466098
-Node: Controlling Scanning469099
-Ref: Controlling Scanning-Footnote-1474272
-Node: Delete474588
-Ref: Delete-Footnote-1477339
-Node: Numeric Array Subscripts477396
-Node: Uninitialized Subscripts479579
-Node: Multidimensional481206
-Node: Multiscanning484319
-Node: Arrays of Arrays485908
-Node: Arrays Summary490571
-Node: Functions492676
-Node: Built-in493549
-Node: Calling Built-in494627
-Node: Numeric Functions496615
-Ref: Numeric Functions-Footnote-1500649
-Ref: Numeric Functions-Footnote-2501006
-Ref: Numeric Functions-Footnote-3501054
-Node: String Functions501323
-Ref: String Functions-Footnote-1524320
-Ref: String Functions-Footnote-2524449
-Ref: String Functions-Footnote-3524697
-Node: Gory Details524784
-Ref: table-sub-escapes526557
-Ref: table-sub-proposed528077
-Ref: table-posix-sub529441
-Ref: table-gensub-escapes530981
-Ref: Gory Details-Footnote-1532157
-Node: I/O Functions532308
-Ref: I/O Functions-Footnote-1539418
-Node: Time Functions539565
-Ref: Time Functions-Footnote-1550029
-Ref: Time Functions-Footnote-2550097
-Ref: Time Functions-Footnote-3550255
-Ref: Time Functions-Footnote-4550366
-Ref: Time Functions-Footnote-5550478
-Ref: Time Functions-Footnote-6550705
-Node: Bitwise Functions550971
-Ref: table-bitwise-ops551533
-Ref: Bitwise Functions-Footnote-1555778
-Node: Type Functions555962
-Node: I18N Functions557104
-Node: User-defined558749
-Node: Definition Syntax559553
-Ref: Definition Syntax-Footnote-1564866
-Node: Function Example564935
-Ref: Function Example-Footnote-1567575
-Node: Function Caveats567597
-Node: Calling A Function568115
-Node: Variable Scope569070
-Node: Pass By Value/Reference572058
-Node: Return Statement575568
-Node: Dynamic Typing578552
-Node: Indirect Calls579481
-Ref: Indirect Calls-Footnote-1589197
-Node: Functions Summary589325
-Node: Library Functions591975
-Ref: Library Functions-Footnote-1595593
-Ref: Library Functions-Footnote-2595736
-Node: Library Names595907
-Ref: Library Names-Footnote-1599380
-Ref: Library Names-Footnote-2599600
-Node: General Functions599686
-Node: Strtonum Function600714
-Node: Assert Function603616
-Node: Round Function606942
-Node: Cliff Random Function608483
-Node: Ordinal Functions609499
-Ref: Ordinal Functions-Footnote-1612564
-Ref: Ordinal Functions-Footnote-2612816
-Node: Join Function613027
-Ref: Join Function-Footnote-1614798
-Node: Getlocaltime Function614998
-Node: Readfile Function618734
-Node: Data File Management620573
-Node: Filetrans Function621205
-Node: Rewind Function625274
-Node: File Checking626832
-Ref: File Checking-Footnote-1627964
-Node: Empty Files628165
-Node: Ignoring Assigns630144
-Node: Getopt Function631698
-Ref: Getopt Function-Footnote-1642962
-Node: Passwd Functions643165
-Ref: Passwd Functions-Footnote-1652144
-Node: Group Functions652232
-Ref: Group Functions-Footnote-1660163
-Node: Walking Arrays660376
-Node: Library Functions Summary661979
-Node: Library Exercises663367
-Node: Sample Programs664647
-Node: Running Examples665417
-Node: Clones666145
-Node: Cut Program667369
-Node: Egrep Program677227
-Ref: Egrep Program-Footnote-1684814
-Node: Id Program684924
-Node: Split Program688578
-Ref: Split Program-Footnote-1692116
-Node: Tee Program692244
-Node: Uniq Program695031
-Node: Wc Program702454
-Ref: Wc Program-Footnote-1706719
-Node: Miscellaneous Programs706811
-Node: Dupword Program708024
-Node: Alarm Program710055
-Node: Translate Program714859
-Ref: Translate Program-Footnote-1719432
-Ref: Translate Program-Footnote-2719702
-Node: Labels Program719841
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 End Tag Table