Changes from 3.1.2 to 3.1.3
---------------------------
1. Gawk now follows POSIX in handling of local numeric formats for
input, output and number/string conversions.
2. Multibyte detection improved. See README_d/README.multibyte for more
info about multibyte locales.
3. Handling of `close' made more POSIX-compliant for POSIXLY_CORRECT,
see the documentation.
4. The record reading code was redone, again. This time it's much
better. Really!
5. For RS = "\n" and RS = "", gawk now only sets RT when it has changed.
This provides considerable performance improvement.
6. `match' now sets all the subscripts in the third argument array
correctly, even if not all subexpressions matched.
7. Updated to Automake 1.7.5. configure.in renamed configure.ac.
8. C-style switch statements are available, but must be enabled at
compile time via `configure --enable-switch'. For 3.2 they'll be
enabled by default. Thanks to Michael Benzinger for the initial
code.
9. %c now always prints no more than one character, whatever
precision is provided.
10. strtonum(<number>) now works again.
11. Gawk is now much better about scalar/array typing of global
uninitiailzed variables passed as parameters. Once the parameter
is then used one way or the other, the global var's type is
adjusted accordingly. Thanks to Stepan Kasal for the original
(considerable) changes.
12. Dynamic function loading under Windows32 should now be possible. See
README_d/README.pcdynamic. Thanks to Patrick T.J. McPhee for the changes.
13. Updated to gettext 0.12.1.
14. Gawk now follows historical practice and POSIX for the return
value of `rand': It's now 0 <= N < 1.
Changes from 3.1.1 to 3.1.2
---------------------------
1. Loops of the form:
for (iggy in foo)
next
no longer leak memory.
2. gawk -v FIELDWIDTHS="..." now sets PROCINFO["FS"] correctly.
3. All builtin operations and functions should now fully evaluate their
arguments so that side effects take place correctly.
4. Fixed a logic bug in gsub/gensub for matches to null strings that occurred
later in the string after a nonnull match.
5. getgroups code now works on Ultrix again.
6. Completely new version of the full GNU regex engine now in place.
7. Argument parsing and variable assignment has been cleaned up.
8. An I/O bug on HP-UX has been documented and worked around. See
README_d/README.hpux.
9. awklib/grcat should now compile correctly.
10. Updated to automake 1.7.3, autoconf 2.57 and gettext 0.11.5 ; thanks to
Paul Eggert for the initial automake and autoconf work.
11. As a result of #6, removed the use of the dfa code from GNU grep.
12. It is now possible to use ptys for |& two-way pipes instead of
pipes. The basic plumbing for this was provided by Paolo Bonzini.
To make this happen:
command = "unix command etc"
PROCINFO[command, "pty"] = 1
print ... |& command
command |& getline stuff
In other words, set the element in PROCINFO *before* opening the
two-way pipe, and then gawk will use ptys instead of pipes.
On systems without ptys or where all the ptys are in use, gawk
will fall back to using plain pipes.
13. Fixed a regex matching across buffer boundaries bug, with a
heuristic. See io.c:rsre_get_a_record.
14. Profiling no longer dumps core if there are extension functions in place.
15. Grammar and scanner cleaned up, courtesy of Stepen Kasal, to hopefully
once and for all fix the `/=' operator vs. `/=.../' regex ambiguity.
Lots of other grammar simplifications applied, as well.
16. BINMODE should work now on more Windows ports.
17. Updated to bison 1.875. Includes fix to bisonfix.sed script.
18. The NODE structure is now 20% (8 bytes) smaller (on x86, anyway), which
should help conserve memory.
19. Builds not in the source directory should work again.
20. Arrays now use 2 NODE's per element instead of three. Combined with
#18, (on the x86) this reduces the overhead from 120 bytes per element
to just 64 bytes: almost a 50% improvement.
21. Programs that make heavy use of changing IGNORECASE should now be
much faster, particularly if using a regular expression for FS or RS.
IGNORECASE now correctly affects RS regex record splitting, as well.
22. IGNORECASE no longer affects single-character field splitting (FS = "c"),
or single-character record splitting (RS = "c").
This cleans up some weird behavior, and makes gawk better match the
documentation, which says it only affects regex-based field splitting
and record splitting.
The documentation on this was improved, too.
23. The framework in test/ has been simplified, making it much easier to
add new tests while keeping the size of Makefile.am reasonable. Thanks
for this to Stepan Kasal.
24. --lint=invalid causes lint warnings only about stuff that's actually
invalid. This needs additional work.
25. More translations.
26. The `get_a_record' routine has been revamped (currently by splitting it
into three variants). This should improve long-term maintainability.
27. `match' now adds more entries to 3rd array arg:
match("the big dog", /([a-z]+) ([a-z]+) ([a-z]+)/, data)
fills in variables:
data[1, "start"], data[1, "length"], and so on.
28. New `asorti' function with same interface as `asort', but sorts indices
instead of values.
29. Documentation updated to FDL 1.2.
30. New `configure' option --disable-lint at compile time disables lint
checking. With GCC dead-code-elimination, cuts almost 200K off the
executable size on GNU/Linux x86. Presumably speeds up runtime.
Using this will cause some of the tests in the test suite to fail.
This option may be removed at a later date.
31. Various minor cleanups, see the ChangeLog for details.
this gawk version is newer than the version shipped with 1.6 and has some
potentially useful features such as 2 way pipes which allow easy access to
the sort(1) command.
Changes from 3.1.0 to 3.1.1
---------------------------
1. Six new translations.
2. Having more than 4 different value for OFMT and/or CONVFMT now works.
3. The handling of dynamic regexes is now more more sane, esp. w.r.t.
the profiling code. The profiling code has been fixed in several
places.
4. The return value of index("", "") is now 1.
5. Gawk should no longer close fd 0 in child processes.
6. Fixed test for strtod semantics and regenerated configure.
7. Gawk can now be built with byacc; an accidental bison dependency was
removed.
8. yyerror() will no longer dump core on long source lines.
9. Gawk now correctly queries getgroups(2) to figure out how many groups
the process has.
10. New configure option to force use of included strftime, e.g. on
Solaris systems. See `./configure --help' for the details. Replaced
the included strftime.c with the one from textutils.
11. OS/2 port has been updated.
12. Multi-byte character support has been added, courtesy of IBM Japan.
13. The `for (iggy in foo) delete foo[iggy]' -> `delete foo' optimisation
now works.
14. Upgraded to gettext 0.11.2 and automake 1.5.
15. Full gettext compatibility (new dcngettext function).
16. The O'Reilly copyedits and indexing changes for the documentation have
been folded into the texinfo version of the manuals.
17. A humongously long value for the AWKPATH environment variable will no
longer dump core.
18. Configuration / Installation issues have been straightened out in
Makefile.am.
Enable this package for all platforms.
Added GAWK_ENABLE_PORTALS to mk/bsd.pkg.defaults.mk to enable/disable gawk
handling file names that start with `/p/' as a 4.4 BSD type portal file.
Changes from 3.0.4 to 3.0.5:
- bug fix release only.
Changes from 3.0.5 to 3.0.6:
- bug fix release only.
Changes from 3.0.6 to 3.1.0:
- A new PROCINFO array provides info about the process. The non-I/O /dev/xxx
files are now obsolete, and their use always generates a warning.
- A new `mktime' builtin function was added for creating time stamps. The
`mktime' function written in awk was removed from the user's guide.
- New `--gen-po' option creates GNU gettext .po files for strings marked
with a leading underscore.
- Gawk now completely interprets special file names internally, ignoring the
existence of real /dev/stdin, /dev/stdout files, etc.
- The mmap code was removed. It was a worthwhile experiment that just
didn't work out.
- The BINMODE variable is new; on non-UNIX systems it affects how gawk
opens files for text vs. binary.
- Gawk no longer supports `next file' as two words.
- On systems that support it, gawk now sets the `close on exec' flag on all
files and pipes it opens. This makes sure that child processes run via
system() or pipes have plenty of file descriptors available.
- If `--posix' is in effect, newlines are not allowed after ?:.
- Weird OFMT/CONVFMT formats no longer cause fatal errors.
- Diagnostics about array parameters now include the parameter's name,
not just its number.
- It is now possible to open a two-way pipe via the `|&' operator.
See the discussion in the manual about putting `sort' into such a pipeline,
though. (NOTE! This is borrowed from ksh: it is not the same as
the same operator in csh!)
- The close() function now takes an optional second string argument
that allows closing one or the other end of the two-way pipe to
a co-process. This is needed to use `sort' in a co-process, see
the doc.
- If TCP/IP is available, special file names beginning with `/inet'
can be used with `|&' for IPC.
- With `--enable-portals' on the configure command line, gawk will also
treat file names that start with `/p/' as a 4.4 BSD type portal file,
i.e., a two-way pipe for `|&'.
- Unrecognized escapes, such as "\q" now always generate a warning.
- The LINT variable is new; it provides dynamic control over the --lint
option.
- Lint warnings can be made fatal by using --lint=fatal or `LINT = "fatal"'.
Use this if you're really serious about portable code.
- A number of lint warnings have been added. Most notably, gawk will
detect if a variable is used before assigned to. Warnings for
when a string that isn't a number gets converted to a number are
in the code but disabled; they seem to be too picky in practice.
Also, gawk will now warn about function parameter names that shadow
global variable names.
- It is now possible to dynamically add builtin functions on systems
that support dlopen. This facility is not (yet) as portable or well
integrated as it might be. *** WARNING *** THIS FEATURE WILL EVOLVE!
- Profiling has been added! A separate version of gawk, named pgawk, is
built and generates a run-time execution profile. The --profile option
can be used to change the default output file. In regular gawk, this
option pretty-prints the parse tree.
- Gawk has been internationalized, using GNU gettext. Translations for
future distributions are most welcome.
- New asort() function for sorting arrays. See the doc for details.
- The match function takes an optional array third argument to hold
the text matched by parenthesized sub-expressions.
- The bit op functions and octal and hex source code constants are on by
default, no longer a configure-time option. Recognition of non-decimal
data is now enabled at runtime with --non-decimal-data command line option.
- Internationalization features available at the awk level: new TEXTDOMAIN
variable and bindtextdomain() and dcgettext() functions. printf formats
may contain the "%2$3.5d" kind of notation for use in translations. See
the texinfo manual for details.
- The return value from close() has been rationalized. Most notably,
closing something that wasn't open returns -1 but remains non-fatal.
- The array effeciency change from 3.0.5 was reverted; the semantics were
not right. Additionally, index values of previously stored elements
can no longer change dynamically.
- The new option --dump-variables dumps a list of all global variables and
their final types and values to a file you give, or to `awkvars.out'.
- Gawk now uses a recent version of random.c courtesy of the FreeBSD
project.
- The gawk source code now uses ANSI C function definitions (new style),
with ansi2knr to translate code for old compilers.
- `for (iggy in foo)' loops should be more robust now in the face of
adding/deleting elements in the middle; they loop over just the elements
that are present in the array when the loop starts.
