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@@ -0,0 +1,712 @@ +GNU M4 NEWS - User visible changes. + +* Noteworthy changes in release 1.4.16 (2011-03-01) [stable] + +** Fix regressions in the `index' builtin. On glibc platforms, this + avoids false positives from a strstr bug in glibc 2.9 through 2.12; + on many other platforms, it fixes two separate regressions, a false + positive introduced in 1.4.11 and a false negative in 1.4.15. + +** A number of portability improvements inherited from gnulib. + + +* Noteworthy changes in release 1.4.15 (2010-08-31) [stable] + +** Fix regression introduced in 1.4.9b where the `format' builtin could + crash on an invalid format string. + +** Fix compilation against newer glibc, and on AIX 7.1BETA. + +** A number of portability improvements inherited from gnulib. + + +* Noteworthy changes in Version 1.4.14 (2010-02-24) [stable] + Released by Eric Blake, based on git version 1.4.13.* + +** Fix regression introduced in 1.4.12 where executing with stdout closed + could crash m4 on exit on some platforms. + +** Fix regressions introduced in 1.4.13 in the `esyscmd' builtin, where + closed file descriptors could interfere with child execution, and where + a child status of 127 made m4 print a spurious message to stderr. + +** Fix a security hole in 'make dist', present since at least M4 1.4, that + could affect anybody attempting to redistribute modified sources (see + Automake CVE-2009-4029). + +** A number of portability improvements inherited from gnulib. + +* Noteworthy changes in Version 1.4.13 (2009-04-01) [stable] + Released by Eric Blake, based on git version 1.4.12.* + +** The manual is now distributed under the terms of FDL 1.3. + +** The `divert' and `undivert' builtins have been made more efficient + when using temporary files for large diversions. + +** The `translit' builtin has been made more efficient when the second + argument is short. + +** The input engine has been optimized for faster processing. + +** The command line option `--debugfile', introduced in 1.4.7, now + treats its argument as optional, in order to allow setting the debug + output back to stderr when used without an argument; and order is now + significant with respect to command line files. You must therefore use + `m4 --debugfile=trace file', not `m4 file --debugfile trace'. This + change does not affect the deprecated `-o'/`--error-output' option. + +** The `syscmd' and `esyscmd' builtins can be configured to use an + alternate shell, via the new `configure' option `--with-syscmd-shell'. + +** A number of portability improvements inherited from gnulib. + +* Noteworthy changes in Version 1.4.12 (2008-10-10) [stable] + Released by Eric Blake, based on git version 1.4.11.* + +** Fix regression introduced in 1.4.4b where using `traceon' could delete + a macro. This was most noticeable with `traceon(`traceon')', but + would also happen in cases such as `foo(traceon(`foo'))'. + +** Fix regression introduced in 1.4.7 where `m4 -N9' died with an assertion + failure. + +** Fix regression introduced in 1.4.11 where `defn' died with an assertion + failure on a traced but undefined macro. + +** New `-g'/`--gnu' command-line option overrides `-G'/`--traditional'. + For now, the environment variable POSIXLY_CORRECT has no effect on M4 + behavior; but a future release of M4 will behave as though --traditional + is implied if POSIXLY_CORRECT is set (this future change is necessary, + because in the current release, there is no way to disable GNU + extensions that conflict with POSIX without the use of a non-POSIX + command-line argument). Clients of M4 that want to use GNU extensions, + even when POSIXLY_CORRECT is set, should start using the -g command-line + argument, even though it is currently a no-op if -G did not appear + earlier in the command line, so that the client will not break in the + face of an upgraded m4 and a POSIXLY_CORRECT execution environment. + +** The `-L'/`--nesting-limit' command-line option now defaults to 0 for + unlimited on platforms that can detect and deal with stack overflow. On + systems that lack alternate stack support, such as Cygwin, and on + systems that do not obey the POSIX semantics for distinguishing stack + overflow from other exceptions, such as Linux, you can optionally + install the libsigsegv library (version 2.6 or newer recommended) to + enhance m4's ability to accurately report stack overflow: + http://www.gnu.org/software/libsigsegv/ + +** A number of portability improvements inherited from gnulib. + +* Noteworthy changes in Version 1.4.11 (2008-04-02) [stable] + Released by Eric Blake, based on git version 1.4.10a + +** Security fixes for the -F option, for bugs present since -F was + introduced in 1.3: Avoid core dump with 'm4 -F file -t undefined', and + avoid arbitrary code execution with certain file names. + +** Fix regression introduced in 1.4.9b in the `divert' builtin when more + than 512 kibibytes are saved in diversions on platforms like NetBSD + or darwin where fopen(name,"a+") seeks to the end of the file. + +** The output of the `maketemp' and `mkstemp' builtins is now quoted if a + file was created. This is a minor security fix, because it was possible + (although rather unlikely) that an unquoted string could match an + existing macro name, such that use of the `mkstemp' output would trigger + inadvertent macro expansion and operate on the wrong file name. + +** Enhance the `defn' builtin to support concatenation of multiple text + arguments, as required by POSIX. However, at this time, it is not + possible to concatenate a builtin macro with anything else; a warning is + now issued if this is attempted, although a future version of M4 may + lift this restriction to match other implementations. + +** Enhance the `format' builtin to parse all C99 floating point numbers, + even on platforms where strtod(3) is buggy, although the replacement + function does have the known issue of rounding errors when parsing + some decimal floating point values. This fixes testsuite failures + introduced in 1.4.9b. + +** Enhance the `index' builtin to guarantee linear behavior, in spite of + the surprisingly large number of systems with a brain-dead quadratic + strstr(3). + +** A number of portability improvements inherited from gnulib. + +* Noteworthy changes in Version 1.4.10 (2007-07-09) [stable] + Released by Eric Blake, based on CVS version 1.4.9c + +** Upgrade from GPL version 2 to GPL version 3 or later. + +** A number of portability improvements inherited from gnulib. + +** Avoid undefined behavior introduced in 1.4.9b in the `format' builtin + when handling %c. However, this area of code has never been documented, + and currently does not match the POSIX behavior of printf(1), so it may + have further changes in the next version. + +* Noteworthy changes in Version 1.4.9b (2007-05-29) [beta] + Released by Eric Blake, based on CVS version 1.4.9a + +** Fix regression introduced in 1.4.9 in the `eval' builtin when performing + division. + +** Fix regression introduced in 1.4.8 in the `-F' option that made it + impossible to freeze more than 512 kibibytes of diverted text. + +** The synclines option `-s' no longer generates sync lines in the middle of + multiline comments or quoted strings. + +** Work around a number of corner-case POSIX compliance bugs in various + broken stdio libraries. In particular, the `syscmd' builtin behaves + more predictably when stdin is seekable. + +** The `format' builtin now understands formats such as %a, %A, and %'hhd, + and works around a number of platform printf bugs. Furthermore, the + sequence format(%*.*d,-1,-1,1) no longer outputs random data. However, + some non-compliant platforms such as mingw still have known bugs in + strtod that may cause testsuite failures. + +** The testsuite is improved to also run gnulib portability tests for the + features that M4 imports from gnulib. + +* Noteworthy changes in Version 1.4.9 (2007-03-23) [stable] + Released by Eric Blake, based on CVS version 1.4.8c + +** Minor documentation and portability cleanups. + +* Noteworthy changes in Version 1.4.8b (2007-02-24) [beta] + Released by Eric Blake, based on CVS version 1.4.8a + +** Fix a regression introduced in 1.4.8 that made m4 unable to process + files larger than 2GiB on some platforms. + +** Fix a regression introduced in 1.4.8 that made m4 dump core when + invoked as 'm4 -- file'. + +** The `eval' builtin now follows C precedence rules. Additionally, the + short-circuit operators correctly short-circuit division by zero. The + previously undocumented alias of '=' meaning '==' in eval now triggers a + deprecation warning, so that a future version of M4 can implement a form + of variable assignment as an extension. + +** The `include' builtin now affects exit status on failure, as required by + POSIX. Use `sinclude' if you need a successful exit status. + +** The `-E'/`--fatal-warnings' command-line option now has two levels. When + specified only once, warnings affect exit status, but execution + continues, so that you can see all warnings instead of fixing them one + at a time. To achieve 1.4.8 behavior, where the first warning + immediately exits, specify -E twice on the command line. + +** A new `--warn-macro-sequence' command-line option allows detection of + sequences in `define' and `pushdef' definitions that match an optional + regular expression. The default regular expression is + `\$\({[^}]*}\|[0-9][0-9]+\)', corresponding to the sequences that might + not behave correctly when upgrading to the eventual M4 2.0. By default, + M4 2.0 will follow the POSIX requirement that a macro definition + containing `$11' must expand to the first argument concatenated with 1, + rather than the eleventh argument; and will take advantage of the POSIX + wording that allows implementations to treat `${11}' as the eleventh + argument instead of literal text. Be aware that Autoconf 2.61 will not + work with this option enabled with the default regular expression; but + Autoconf 2.62 will be compatible with this option. + +** Improved portability to platforms such as BSD/OS and AIX. + +* Noteworthy changes in Version 1.4.8 (2006-11-20) [stable] + Released by Eric Blake, based on CVS version 1.4.7a + +** The `divert' macro and `-H'/`--hashsize' command line option no longer + cause a core dump when handed extra large values. Also, `divert' now + uses memory proportional to the number of diversions in use, rather than + to the maximum diversion number encountered, so that large diversion + numbers are less likely to exhaust system memory; and is no longer + limited by the maximum number of file descriptors. + +** The `--help' and `--version' command line options now consistently + override all earlier options. For example, `m4 --debugfile=trace + --help' now no longer accidentally creates an empty file `trace'. + +** The `-L'/`--nesting-limit' command line option can now be set to 0 + to remove the default limit of 1024. However, it is still possible that + heavily nested input can cause abrupt program termination due to stack + overflow. + +** Problems encountered when writing to standard error, such as with the + `errprint' macro, now always cause a non-zero exit status. + +** Warnings and errors issued during macro expansion are now consistently + reported at the line where the macro name was detected, rather than + where the close parenthesis resides. Text wrapped by `m4wrap' now + remembers the location that was in effect when m4wrap was invoked, + rather than changing to line 0 and the empty string for a file. The + macros `__line__' and `__file__' now work correctly even as the last + token in an included file. + +** The `builtin' and `indir' macros now transparently handle builtin + tokens generated by `defn'. + +** When diversions created by the `divert' macro collect enough text that + M4 must use temporary files, the environment variable $TMPDIR is now + consulted, and a better effort is made to clean up those files in the + event of a fatal signal. + +** The `mkstemp' builtin is added with the same GNU semantics as `maketemp', + based on the recommendation of POSIX to deprecate the POSIX semantics of + `maketemp' as inherently insecure. In GNU mode (no -G supplied on the + command line), `maketemp' silently retains the secure GNU semantics, but + a future release of M4 will change this to emit a warning. In + traditional mode (m4 -G), `maketemp' now uses the POSIX-mandated + insecure semantics, and issues a warning that you should convert your + script to use `mkstemp' instead. Additionally, `mkstemp' and `maketemp' + are now well-defined even if the template argument does not end in six + `X' characters. + +** The manual has been improved, including a new section on a composite + macro `foreach'. + +** The `changecom' and `changequote' macros now treat an empty second + argument the same as if it were missing, rather than using the empty + string and making it impossible to end a comment or quote. + +** The `translit' macro now operates in linear instead of quadratic time, + and is now eight-bit clean. + +** The `-D', `-U', `-s', and `-t' command line options now take effect + after any files encountered earlier on the command line, rather than up + front, as is done in traditional implementations and required by POSIX. + +* Noteworthy changes in Version 1.4.7 (2006-09-25) [stable] + Released by Eric Blake, based on CVS version 1.4.6a + +** Fix regression from 1.4.5 in handling a file that ends in a macro + expansion without arguments instead of a newline. + +** The define and pushdef macros now warn when the first argument is not + a string, rather than silently doing nothing. + +** Standard input can now be read more than once, as in 'm4 - file -', and + is not closed until all wrapped text is handled. This makes a + difference when stdin is not a regular file, and also fixes bugs when + using the syscmd or esyscmd macros from wrapped text. + +** When standard input is a seekable file, the m4exit, syscmd, and esyscmd + macros now restore the current position to the next unread byte rather + than discarding an arbitrary amount of buffered data. + +** SysV command-line compatibility is no longer a goal of GNU M4; the + focus will be instead on POSIX compatibility. This release continues to + support previous usage, but adds warnings in areas which will allow a + future version of GNU M4 to use its own extensions without being tied to + the SysV command line interface. + +** The no-op compatibility command line options -B, -N, -S, -T, and + --diversions may be withdrawn or assigned new meanings in future + releases, so they now issue a warning if used. + +** A new command line option -i replaces the compatibility -e as the + short spelling of --interactive, for consistency with other GNU tools; a + warning is issued if the old spelling is used, and it may be assigned + new meaning in future releases. + +** A new command line option --debugfile replaces the options -o and + --error-output as the preferred spelling. The old options were + misleading in their names and inconsistent with other GNU tools; they + are still silently accepted, but no longer documented in --help, and may + be assigned new meanings in future releases. + +* Noteworthy changes in Version 1.4.6 (2006-08-25) [stable] + Released by Eric Blake, based on CVS version 1.4.5a + +** Fix buffer overruns in regexp and patsubst macros when handed a trailing + backslash in the replacement text, or when handling \n substitutions + beyond the number of \(\) groups. + +** Fix memory leak in regexp, patsubst, and changeword macros. + +** The format macro now understands %F, %g, and %G. + +** When loading frozen files, m4 now exits with status 63 if version + mismatch is detected. + +** Fix bugs that occurred when invoked with stdout or stderr closed, + and detect write failures to stdout or to the target of the debugfile + macro. In particular, the syscmd and esyscmd macros can no longer + interfere with the debug stream or diversions. + +** The m4exit macro now converts values outside the range 0-255 to 1. + +** It is now an error if a command-line input file ends in the middle of a + comment, matching the behavior of mid-string and mid-argument + collection. + +** The dnl macro now warns if end of file is encountered instead of a + newline. + +** The error message when end of file is encountered now uses the file and + line where the dangling construct started, rather than `NONE:0:'. + +** The debugmode and __file__ macros, and the -s/--synclines option, now + show what directory a file was found in when the -I/--include option or + M4PATH variable had an effect. + +** The changequote and changecom macros now work with 8-bit characters, and + quotes and comments that begin with `(' are properly recognized + following a word. + +** The new macro __program__ is added, which allows the input file to issue + an error message that resembles messages from m4. Warning and error + messages have been reformatted to comply with GNU Coding Standards. + +** The errprint, m4wrap, and shift macros are now recognized only with + arguments. + +** The index, substr, translit, regexp, and patsubst macros now produce + output when given only one argument, but still warn about a missing + second argument. + +** The patsubst macro now reliably finds zero-length matches at the end + of a string. + +* Noteworthy changes in Version 1.4.5 (2006-07-15) [stable] + Released by Eric Blake, based on CVS version 1.4.4c + +** Fix sysval on BeOS, OS/2, and other systems that store exit status + in the low-order byte. Additionally, on Unix platforms, if syscmd was + terminated by a signal, sysval now displays the signal number shifted + left by eight bits, to match traditional m4 implementations. + +** The maketemp macro is no longer subject to platform limitations (such as + 26 or 32 max files from a given template). + +** Frozen files now require that the first directive be V (version), to + better diagnose version mismatch. Additionally, if the F directive + (builtin function) names an unknown builtin that existed in the m4 that + froze the file but not in the current m4 (for example, changeword), the + warning is deferred until an attempt is made to actually use the + builtin. This allows downgrading from beta m4-1.4o to stable m4-1.4.5 + without breaking autoconf. + +** The format and indir macros are now recognized only with arguments. + +** The eval macro no longer crashes on x86 architectures when dividing the + minimum integer by -1. + +** On systems with ecvt and fcvt, format no longer truncates trailing + zeroes on integers printed with %.0f. On systems without these + functions, format is no longer subject to a buffer overflow that + permitted arbitrary code execution. + +** On native Windows builds, the macro __windows__ is provided instead of + __unix__. Likewise, on OS/2 builds, the macro __os2__ is provided. + This allows input files to determine when syscmd might behave + differently. + +** Fix bug in 1.4.3 patch to use \n line-endings that did not work for + cygwin. + +** When given the empty string or 0, undivert is now documented as a no-op + rather than closing stdout, warning about a non-existent file, or trying + to read a directory as a file. + +** Many documentation improvements. Also, the manual is now distributed + under FDL 1.2, rather than a stricter verbatim-only license. + +** Raise the -L (--nesting-limit) command line option limit from 250 to + 1024. + +** The decr, incr, divert, m4exit, and substr macros treat an empty number + as 0, issue a warning, and expand as normal; rather than issuing an + error and expanding to the empty string. + +** The eval macro now treats an empty radix argument as 10, handles radix 1, + and treats the width argument as number of digits excluding the sign, + for compatibility with other m4 implementations. + +** The ifdef, divert, m4exit, substr, and translit macros now correctly + ignore extra arguments. + +** The popdef and undefine macros now correctly accept multiple arguments. + +** Although changeword is on its last leg, if enabled, it now reverts to the + default (faster) regexp when passed the empty string. + +** The regexp and substr macros now warn and ignore a trailing backslash in + the replacement, and warn on \n for n larger than the number of + sub-expressions in the regexp. + +* Noteworthy changes in Version 1.4.4b (2006-06-17) [beta] + Released by Eric Blake, based on CVS version 1.4.4a + +** Fix a recursive push_string crashing bug, which affected changequote of + three or more characters on some compilers. + +** Use automake to fix build portability issues. + +** Fix a recursive m4wrap crashing bug. + +** Fix a 1 in 2**32 hash crashing bug. + +** Tracing a macro by name is now persistent, even if the macro is + subsequently undefined or redefined. The traceon and traceoff macros no + longer warn about undefined symbols. This solves a crash when using + indir on an undefined macro traced with the -t option, as well as an + incorrect result of ifdef. Furthermore, tracing is no longer + transferred with builtins, solving the bug of "m4 -tm4_eval" failing to + give trace output on the input + "define(`m4_eval',defn(`eval'))m4_eval(1)". + +** Fix a crash when a macro is undefined while collecting its arguments, by + always using the definition that was in effect before argument + collection. This behavior matches the C pre-processor, and means that + the sequence "define(`f',`1')f(define(`f',`2'))f" is now documented to + result in "12", rather than the previously undocumented "22". + +** Update the regex engine to fix several bugs. + +** Fix a potential crash on machines where char is signed. + +* Noteworthy changes in Version 1.4.4 (Oct 2005) [stable] + Released by Gary V. Vaughan + +** ./configure --infodir=/usr/share/info now works correctly. + +** When any file named on the command line is missing exit with status 1. + +* Noteworthy changes in Version 1.4.3 (Mar 2005) [stable] + Released by Gary V. Vaughan + +** DESTDIR installs now work correctly. + +** Don't segfault with uncompilable regexps to changeword(). + +** Always use \n line-endings for frozen files (fixes a Windows bug). + +** Portability fix for systems lacking mkstemp(3). + +** Approximately 20% speed up in the common case of usage with autoconf. + +** Supported on QNX 6.3. + +* Noteworthy changes in Version 1.4.2 (Aug 2004) [stable] + Released by Paul Eggert + +** No user visible changes; portability bug fixes only. + +* Noteworthy changes in Version 1.4.1 (Jun 2004) [stable] + Released by Paul Eggert + +** maketemp now creates an empty file with the given name, instead of merely + returning the name of a nonexistent file. This closes a security hole. + +* Noteworthy changes in Version 1.4 (Oct 1994) [stable] + Released by Franc,ois Pinard + +** (No user visible changes) + + +Version 1.3 - September 1994, by Franc,ois Pinard + +* Diversions are created as needed. Option `-N' is still accepted, but +otherwise ignored. Users should use only negative diversion numbers, +instead of high positive numbers, for diverting to nowhere. + +* Diversions should also work faster. No temporary files will be needed +at all if all diversions taken altogether do not use more than 512K. + +* Frozen state files may be produced with the `--freeze-state' (-F) +option and later brought back through the `--reload-state' (-R) option. + +Version 1.2 - July 1994, by Franc,ois Pinard + +* In patsubst(STRING, REGEXP, REPLACEMENT), \& in REPLACEMENT has been +changed to represent this part of STRING matched by the whole REGEXP, +instead of the whole STRING as before. \0 does the same, but emits a +diagnostic saying it will disappear in some subsequent release. + +* eval(EXPR) emits a diagnostic if EXPR has suffixed crumb. The same for +other numeric conversions in incr(), decr(), divert(), etc. + +* `--fatal-warnings' (-E) stops execution at first warning. + +* `--nesting-limit=LEVEL' (-L LEVEL) sets a limit to macro nesting. +It is initially fixed at 250. + +* `--word-regexp=REGEXP' (-W REGEXP) modifies macro name syntax, like +does the new `changeword(REGEXP)' macro. This feature is experimental, +tell me your opinions about it. You do need --enable-changeword at +configure time to get these things. Do *not* depend on them yet. + +* Trace output format is scannable by GNU Emacs' next-error function. + +* Stack overflow is detected and diagnosed on some capable systems. + +* Various bugs have been corrected, m4 should be more portable. See the +ChangeLog for details. + +Version 1.1 - November 1993, by Franc,ois Pinard + +Changes which might affect existing GNU m4 scripts: + +* Option `-V' has been removed, use `--version' instead. `--version' +writes on standard output instead of standard error, and inhibits any +script execution. + +* `--no-gnu-extensions' has been renamed `--traditional'. + +* In `eval', `^' used to indicate exponentiation, use `**' instead. + +* The automatic undiversion which takes place at end of all input is +forced into the main output stream. + +Changes which are unlikely to affect existing scripts: + +* `--help' prints an usage summary on standard output. Script execution +is then inhibited. + +* `--prefix-builtins' (-P) prefixes all builtin macros by `m4_'. + +* Most builtin macros for which arguments are mandatory, called without +any arguments, are no more recognized as builtin macros: they are +consequently copied verbatim to the output stream. + +* `define' and `pushdef' are usable with only one argument, they give +this argument an empty definition. + +* `eval' new operators for binary representation handling: `^' for +exclusive-or, `~' for the bitwise negation, `<<' and `>>' for shifts. + +* `eval' recognizes the notation 0bDIGITS for binary numbers and the +notation 0rRADIX:DIGITS for numbers in any radix from 1 to 36. + +Version 1.0.3 - December 1992, by Franc,ois Pinard + +Changes for the user: + +* `dnl' outputs a diagnostic if immediately followed by `('. Usually, +`dnl' is followed by newline or whitespace. + +* `ifelse' accepts without complaining the common idiom of having only +one argument. This is useful for introducing long comments. + +* `eval' always expresses values as signed, whatever the radix. + +* M4OPTS environment variable is no longer obeyed. + +* `--no-warnings' option is renamed `--silent'. + +* Debug lines use a new format more compatible with GNU standards. + +* Various bugs have been corrected. See the ChangeLog for details. + +Changes for the installer: + +* GNU m4 now uses an Autoconf-generated configure script, and should be +more easily portable in many ways. (Cray is not supported yet). + +* `make check' has been made more portable, expect no errors. + +Changes for the programmer: + +* Sources have been fully reindented to comply with GNU standards, and +cleaned up in many ways. + +* Sources have been protoized. Non-ANSI compilers are automatically +detected, then sources are unprotoized on the fly before compilation. + +* GNU m4 uses newer versions of obstack, regex, getopt, etc. + +Version 1.0 - October 1991, by Rene' Seindal + +* Uses GNU configure, taken from the gdb distribution. + +* Uses GNU getopt(), with long option names. + +* The -Q/+quiet option is added, which suppresses warnings about missing +or superflous arguments to built-in macros. + +* Added default options via the M4OPTS environment variable. + +* Several minor bugs have been fixed. + +Version 0.99 - July 1991, by Rene' Seindal + +* The builtins `incr' and `decr' are now implemented without use of +`eval'. + +* The builtin `indir' is added, to allow for indirect macro calls +(allows use of "illegal" macro names). + +* The debugging and tracing facilities has been enhanced considerably. +See the manual for details. + +* The -tMACRO option is added, marks MACRO for tracing as soon as it +is defined. + +* Builtins are traced after renaming iff they were before. + +* Named files can now be undiverted. + +* The -Nnum option can be used to increase the number of divertions +available. + +* Calling changecom without arguments now disables all comment handling. + +* A bug in `dnl' is fixed. + +* A bug in the multi-character quoting code is fixed. + +* Several typos in the manual has been corrected. More probably persist. + +Version 0.75 - November 1990, by Rene' Seindal + +* Implemented search path for include files (-I option and M4PATH +environment variable). + +* Implemented builtin `format' for printf-like formatting. + +* Implemented builtin `regexp' for searching for regular expressions. + +* Implemented builtin `patsubst' for substitution with regular +expressions. + +* Implemented builtin `esyscmd', which expands to a shell commands output. + +* Implemented `__file__' and `__line__' for use in error messages. + +* Implemented character ranges in `translit'. + +* Implemented control over debugging output. + +* Implemented multi-character quotes. + +* Implemented multi-character comment delimiters. + +* Changed predefined macro `gnu' to `__gnu__'. + +* Changed predefined macro `unix' to `__unix__', when the -G option is +not used. With -G, `unix' is still defined. + +* Added program name to error messages. + +* Fixed two missing null bytes bugs. + +Version 0.50 - January 1990, by Rene' Seindal + +* Initial beta release. + +======================================================================== + +Local Variables: +mode: outline +fill-column: 75 +End: + +Copyright (C) 1992-1994, 2004-2011 Free Software Foundation, Inc. + +Permission is granted to copy, distribute and/or modify this document +under the terms of the GNU Free Documentation License, Version 1.3 or +any later version published by the Free Software Foundation; with no +Invariant Sections, with no Front-Cover Texts, and with no Back-Cover +Texts. A copy of the license is included in the ``GNU Free +Documentation License'' file as part of this distribution. |