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Diffstat (limited to 'doc/gawk.texi')
| -rw-r--r-- | doc/gawk.texi | 55 |
1 files changed, 43 insertions, 12 deletions
diff --git a/doc/gawk.texi b/doc/gawk.texi index 531b85b1..cec42d29 100644 --- a/doc/gawk.texi +++ b/doc/gawk.texi @@ -1272,6 +1272,9 @@ has been removed.) * Conventions:: Typographical Conventions. * Manual History:: Brief history of the GNU project and this @value{DOCUMENT}. +@ifset FOR_PRINT +* Staying current:: How to keep up. +@end ifset * How To Contribute:: Helping to save the world. * Acknowledgments:: Acknowledgments. @end menu @@ -1864,6 +1867,20 @@ version comes with the @command{gawk} distribution from the FSF. If you find an error in this @value{DOCUMENT}, please report it! @xref{Bugs}, for information on submitting problem reports electronically. +@ifset FOR_PRINT +@node Staying current +@unnumberedsec How to Stay Current + +It may be you have a version of @command{gawk} which is newer than the +one described in this @value{DOCUMENT}. To find out what has changed, +you should first look at the @file{NEWS} file in the @command{gawk} +distribution, which provides a high level summary of what changed in +each release. + +You can then look at the @uref{http://www.gnu.org/software/gawk/manual/, +online version} of this @value{DOCUMENT} to read about any new features. +@end ifset + @ifclear FOR_PRINT @node How To Contribute @unnumberedsec How to Contribute @@ -34057,12 +34074,20 @@ which follows the POSIX specification. Many long-time @command{awk} users learned @command{awk} programming with the original @command{awk} implementation in Version 7 Unix. (This implementation was the basis for @command{awk} in Berkeley Unix, through 4.3-Reno. Subsequent versions -of Berkeley Unix, and some systems derived from 4.4BSD-Lite, use various +of Berkeley Unix, and some systems derived from 4.4BSD-Lite, used various versions of @command{gawk} for their @command{awk}.) This @value{CHAPTER} briefly describes the evolution of the @command{awk} language, with cross-references to other parts of the @value{DOCUMENT} where you can find more information. +@ifset FOR_PRINT +To save space, we have omitted +information on the history of features in @command{gawk} from this +edition. You can find it in the +@uref{http://www.gnu.org/software/gawk/manual/html_node/Feature-History.html, +online documentation}. +@end ifset + @menu * V7/SVR3.1:: The major changes between V7 and System V Release 3.1. @@ -34652,6 +34677,8 @@ GCC for VAX and Alpha has not been tested for a while. @c ENDOFRANGE exgnot @c ENDOFRANGE posnot +@c This does not need to be in the formal book. +@ifclear FOR_PRINT @node Feature History @appendixsec History of @command{gawk} Features @@ -34816,9 +34843,10 @@ The @code{next file} statement became @code{nextfile} (@pxref{Nextfile Statement}). @item -The @code{fflush()} function from the -Bell Laboratories research version of @command{awk} -(@pxref{I/O Functions}). +The @code{fflush()} function from +Brian Kernighan's @command{awk} +(then at Bell Laboratories; +@pxref{I/O Functions}). @item New command line options: @@ -34831,9 +34859,9 @@ the original Version 7 Unix version of @command{awk} (@pxref{V7/SVR3.1}). @item -The @option{-m} option from the -Bell Laboratories research version of @command{awk} -This was later removed. +The @option{-m} option from Brian Kernighan's @command{awk}. (He was +still at Bell Laboratories at the time.) This was later removed from +both his @command{awk} and from @command{gawk}. @item The @option{--re-interval} option to provide interval expressions in regexps @@ -34850,6 +34878,7 @@ The use of GNU Autoconf to control the configuration process @item Amiga support. +This has since been removed. @end itemize @@ -34986,7 +35015,8 @@ BeOS support. This was later removed. Tandem support. This was later removed. @item -The Atari port became officially unsupported. +The Atari port became officially unsupported and was +later removed entirely. @item The source code changed to use ISO C standard-style function definitions. @@ -35079,7 +35109,7 @@ flush all open output redirections @item The @code{isarray()} function which distinguishes if an item is an array -or not, to make it possible to traverse multidimensional arrays +or not, to make it possible to traverse arrays of arrays (@pxref{Type Functions}). @item @@ -35257,6 +35287,7 @@ The dynamic extension interface was completely redone @end itemize @c XXX ADD MORE STUFF HERE +@end ifclear @node Common Extensions @appendixsec Common Extensions Summary @@ -35483,8 +35514,8 @@ provided the initial port to OS/2 and its documentation. Michal Jaegermann provided the port to Atari systems and its documentation. (This port is no longer supported.) -He continues to provide portability checking with DEC Alpha -systems, and has done a lot of work to make sure @command{gawk} +He continues to provide portability checking, +and has done a lot of work to make sure @command{gawk} works on non-32-bit systems. @item @@ -35603,7 +35634,7 @@ The modifications to convert @command{gawk} into a byte-code interpreter, including the debugger. @item -The addition of true multidimensional arrays. +The addition of true arrays of arrays. @ref{Arrays of Arrays}. @item |