git: daf917daba9c - stable/14 - Merge one true awk from 2024-01-22 for the Awk Second Edition support
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Date: Tue, 12 Mar 2024 14:49:09 UTC
The branch stable/14 has been updated by imp:
URL: https://cgit.FreeBSD.org/src/commit/?id=daf917daba9c41c2e11dd5470e632a6ebf4f38e1
commit daf917daba9c41c2e11dd5470e632a6ebf4f38e1
Author: Warner Losh <imp@FreeBSD.org>
AuthorDate: 2024-02-28 15:16:16 +0000
Commit: Warner Losh <imp@FreeBSD.org>
CommitDate: 2024-03-12 04:53:18 +0000
Merge one true awk from 2024-01-22 for the Awk Second Edition support
This brings in Unicode support, CSV support and a number of bug fixes.
They are described in _The AWK Programming Language_, Second Edition, by
Al Aho, Brian Kernighan, and Peter Weinberger (Addison-Wesley, 2024,
ISBN-13 978-0138269722, ISBN-10 0138269726).
Sponsored by: Netflix
(cherry picked from commit f32a6403d34654ac6e61182d09abb5e85850e1ee)
---
contrib/one-true-awk/FIXES | 1429 ++------------------
contrib/one-true-awk/FIXES.1e | 1429 ++++++++++++++++++++
contrib/one-true-awk/README.md | 80 +-
contrib/one-true-awk/awk.1 | 34 +-
contrib/one-true-awk/awk.h | 23 +-
contrib/one-true-awk/awkgram.y | 49 +-
contrib/one-true-awk/b.c | 409 ++++--
contrib/one-true-awk/bugs-fixed/REGRESS | 8 +-
.../one-true-awk/bugs-fixed/getline-corruption.awk | 5 +
.../one-true-awk/bugs-fixed/getline-corruption.in | 1 +
.../one-true-awk/bugs-fixed/getline-corruption.ok | 1 +
contrib/one-true-awk/bugs-fixed/matchop-deref.awk | 11 +
contrib/one-true-awk/bugs-fixed/matchop-deref.bad | 2 +
contrib/one-true-awk/bugs-fixed/matchop-deref.in | 1 +
contrib/one-true-awk/bugs-fixed/matchop-deref.ok | 2 +
.../one-true-awk/bugs-fixed/missing-precision.ok | 2 +
contrib/one-true-awk/bugs-fixed/negative-nf.ok | 2 +
contrib/one-true-awk/bugs-fixed/pfile-overflow.ok | 4 +
contrib/one-true-awk/bugs-fixed/rstart-rlength.awk | 10 +
contrib/one-true-awk/bugs-fixed/rstart-rlength.ok | 4 +
contrib/one-true-awk/bugs-fixed/system-status.awk | 19 +
contrib/one-true-awk/bugs-fixed/system-status.bad | 3 +
contrib/one-true-awk/bugs-fixed/system-status.ok | 3 +
contrib/one-true-awk/bugs-fixed/system-status.ok2 | 3 +
.../one-true-awk/bugs-fixed/unicode-fs-rs-1.awk | 6 +
contrib/one-true-awk/bugs-fixed/unicode-fs-rs-1.in | 2 +
contrib/one-true-awk/bugs-fixed/unicode-fs-rs-1.ok | 5 +
.../one-true-awk/bugs-fixed/unicode-fs-rs-2.awk | 7 +
contrib/one-true-awk/bugs-fixed/unicode-fs-rs-2.in | 2 +
contrib/one-true-awk/bugs-fixed/unicode-fs-rs-2.ok | 4 +
.../one-true-awk/bugs-fixed/unicode-null-match.awk | 6 +
.../one-true-awk/bugs-fixed/unicode-null-match.bad | 1 +
.../one-true-awk/bugs-fixed/unicode-null-match.ok | 1 +
contrib/one-true-awk/lex.c | 60 +-
contrib/one-true-awk/lib.c | 158 ++-
contrib/one-true-awk/main.c | 23 +-
contrib/one-true-awk/makefile | 8 +-
contrib/one-true-awk/maketab.c | 4 +-
contrib/one-true-awk/parse.c | 2 +-
contrib/one-true-awk/proto.h | 10 +-
contrib/one-true-awk/run.c | 942 +++++++++----
contrib/one-true-awk/testdir/Compare.tt | 2 +-
contrib/one-true-awk/testdir/REGRESS | 2 +-
contrib/one-true-awk/testdir/T.argv | 6 +
contrib/one-true-awk/testdir/T.csv | 80 ++
contrib/one-true-awk/testdir/T.flags | 5 +-
contrib/one-true-awk/testdir/T.misc | 20 +
contrib/one-true-awk/testdir/T.overflow | 2 +
contrib/one-true-awk/testdir/T.split | 1 +
contrib/one-true-awk/testdir/T.utf | 194 +++
contrib/one-true-awk/testdir/T.utfre | 234 ++++
contrib/one-true-awk/testdir/tt.15 | 2 +-
contrib/one-true-awk/tran.c | 26 +-
53 files changed, 3525 insertions(+), 1824 deletions(-)
diff --git a/contrib/one-true-awk/FIXES b/contrib/one-true-awk/FIXES
index 8a2befccd624..a043b356fafa 100644
--- a/contrib/one-true-awk/FIXES
+++ b/contrib/one-true-awk/FIXES
@@ -22,1354 +22,87 @@ ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF
THIS SOFTWARE.
****************************************************************/
-This file lists all bug fixes, changes, etc., made since the AWK book
-was sent to the printers in August, 1987.
+This file lists all bug fixes, changes, etc., made since the
+second edition of the AWK book was published in September 2023.
-July 27, 2021:
- As per IEEE Std 1003.1-2008, -F "str" is now consistent with
- -v FS="str" when str is null. Thanks to Warner Losh.
-
-July 24, 2021:
- Fix readrec's definition of a record. This fixes an issue
- with NetBSD's RS regular expression support that can cause
- an infinite read loop. Thanks to Miguel Pineiro Jr.
-
- Fix regular expression RS ^-anchoring. RS ^-anchoring needs to
- know if it is reading the first record of a file. This change
- restores a missing line that was overlooked when porting NetBSD's
- RS regex functionality. Thanks to Miguel Pineiro Jr.
-
- Fix size computation in replace_repeat() for special case
- REPEAT_WITH_Q. Thanks to Todd C. Miller.
-
-February 15, 2021:
- Small fix so that awk will compile again with g++. Thanks to
+Jan 22, 2024:
+ Restore the ability to compile with g++. Thanks to
Arnold Robbins.
-January 06, 2021:
- Fix a decision bug with trailing stuff in lib.c:is_valid_number
- after recent changes. Thanks to Ozan Yigit.
-
-December 18, 2020:
- Fix problems converting inf and NaN values in lib.c:is_valid_number.
- Enhance number to string conversion to do the right thing for
- NaN and inf values. Things are now pretty much the same as in
- gawk. (Found a gawk bug while we're at it.) Added a torture
- test for these values. Thanks to Arnold Robbins. Allows closing
- of PR #101.
-
-December 15, 2020:
- Merge PR #99, which gets the right header for strcasecmp.
- Thanks to GitHub user michaelforney.
-
-December 8, 2020:
- Merge PR #98: Disallow hex data. Allow only +nan, -nan,
- +inf, -inf (case independent) to give NaN and infinity values.
- Improve things so that string to double conversion is only
- done once, yielding something of a speedup. This obviate
- PR #95. Thanks to Arnold Robbins.
-
-December 3, 2020:
- Fix to argument parsing to avoid printing spurious newlines.
- Thanks to Todd Miller. Merges PR #97.
-
-October 13, 2020:
- Add casts before all the calls to malloc/calloc/realloc in order
- to get it to compile with g++. Thanks to Arnold Robbins.
-
-August 16, 2020:
- Additional fixes for DJGPP. Thanks to Eli Zaretskii for
- the testing.
-
-August 7, 2020:
- Merge PR #93, which adds casts to (void*) for debug prints
- using the %p format specifier. Thanks to GitHub user YongHaoWu
- ("Chris") for the fixes.
-
-August 4, 2020:
- In run.c, use non-restartable multibyte routines to attain
- portability to DJGPP. Should fix Issue 92. Thanks to Albert Wik
- for the report and to Todd Miller for the suggested fix.
-
-July 30, 2020:
- Merge PRs 88-91 which fix small bugs. Thanks to Todd Miller and
- Tim van der Molen for the fixes.
-
- In order to make life easier, we move exclusively to bison
- as the parser generator.
-
-July 2, 2020:
- Merge PRs 85 and 86 which fix regressions. Thanks to
- Tim van der Molen for the fixes.
-
-June 25, 2020:
- Merge PRs 82 and 84. The latter fixes issue #83. Thanks to
- Todd Miller and awkfan77.
-
-June 12, 2020:
- Clear errno before calling errcheck to avoid any spurious errors
- left over from previous calls that may have set it. Thanks to
- Todd Miller for the fix, from PR #80.
-
- Fix Issue #78 by allowing \r to follow floating point numbers in
- lib.c:is_number. Thanks to GitHub user ajcarr for the report
- and to Arnold Robbins for the fix.
-
-June 5, 2020:
- In fldbld(), make sure that inputFS is set before trying to
- use it. Thanks to Steffen Nurpmeso <steffen@sdaoden.eu>
- for the report.
-
-May 5, 2020:
- Fix checks for compilers that can handle noreturn. Thanks to
- GitHub user enh-google for pointing it out. Closes Issue #79.
-
-April 16, 2020:
- Handle old compilers that don't support C11 (for noreturn).
- Thanks to Arnold Robbins.
-
-April 5, 2020:
- Use <stdnoreturn.h> and noreturn instead of GCC attributes.
- Thanks to GitHub user awkfan77. Closes PR #77.
-
-February 28, 2020:
- More cleanups from Christos Zoulas: notably backslash continuation
- inside strings removes the newline and a fix for RS = "^a".
- Fix for address sanitizer-found problem. Thanks to GitHub user
- enh-google.
-
-February 19, 2020:
- More small cleanups from Christos Zoulas.
-
-February 18, 2020:
- Additional cleanups from Christos Zoulas. It's no longer necessary
- to use the -y flag to bison.
-
-February 6, 2020:
- Additional small cleanups from Christos Zoulas. awk is now
- a little more robust about reporting I/O errors upon exit.
-
-January 31, 2020:
- Merge PR #70, which avoids use of variable length arrays. Thanks
- to GitHub user michaelforney. Fix issue #60 ({0} in interval
- expressions doesn't work). Also get all tests working again.
- Thanks to Arnold Robbins.
-
-January 24, 2020:
- A number of small cleanups from Christos Zoulas. Add the close
- on exec flag to files/pipes opened for redirection; courtesy of
- Arnold Robbins.
-
-January 19, 2020:
- If POSIXLY_CORRECT is set in the environment, then sub and gsub
- use POSIX rules for multiple backslashes. This fixes Issue #66,
- while maintaining backwards compatibility.
-
-January 9, 2020:
- Input/output errors on closing files are now fatal instead of
- mere warnings. Thanks to Martijn Dekker <martijn@inlv.org>.
-
-January 5, 2020:
- Fix a bug in the concatentation of two string constants into
- one done in the grammar. Fixes GitHub issue #61. Thanks
- to GitHub user awkfan77 for pointing out the direction for
- the fix. New test T.concat added to the test suite.
- Fix a few memory leaks reported by valgrind, as well.
-
-December 27, 2019:
- Fix a bug whereby a{0,3} could match four a's. Thanks to
- "Anonymous AWK fan" for the report.
-
-December 11, 2019:
- Further printf-related fixes for 32 bit systems.
- Thanks again to Christos Zoulas.
-
-December 8, 2019:
- Fix the return value of sprintf("%d") on 32 bit systems.
- Thanks to Jim Lowe for the report and to Christos Zoulas
- for the fix.
-
-November 10, 2019:
- Convert a number of Boolean integer variables into
- actual bools. Convert compile_time variable into an
- enum and simplify some of the related code. Thanks
- to Arnold Robbins.
-
-November 8, 2019:
- Fix from Ori Bernstein to get UTF-8 characters instead of
- bytes when FS = "". This is currently the only bit of
- the One True Awk that understands multibyte characters.
- From Arnold Robbins, apply some cleanups in the test suite.
-
-October 25, 2019:
- More fixes and cleanups from NetBSD, courtesy of Christos
- Zoulas. Merges PRs 54 and 55.
-
-October 24, 2019:
- Import second round of code cleanups from NetBSD. Much thanks
- to Christos Zoulas (GitHub user zoulasc). Merges PR 53.
- Add an optimization for string concatenation, also from
- Christos.
-
-October 17, 2019:
- Import code cleanups from NetBSD. Much thanks to Christos
- Zoulas (GitHub user zoulasc). Merges PR 51.
-
-October 6, 2019:
- Import code from NetBSD awk that implements RS as a regular
- expression.
-
-September 10, 2019:
- Fixes for various array / memory overruns found via gcc's
- -fsanitize=unknown. Thanks to Alexander Richardson (GitHub
- user arichardson). Merges PRs 47 and 48.
-
-July 28, 2019:
- Import grammar optimization from NetBSD: Two string constants
- concatenated together get turned into a single string.
-
-July 26, 2019:
- Support POSIX-specified C-style escape sequences "\a" (alarm)
- and "\v" (vertical tab) in command line arguments and regular
- expressions, further to the support for them in strings added on
- Apr 9, 1989. These now no longer match as literal "a" and "v"
- characters (as they don't on other awk implementations).
- Thanks to Martijn Dekker.
-
-July 17, 2019:
- Pull in a number of code cleanups and minor fixes from
- Warner Losh's bsd-ota branch. The only user visible change
- is the use of random(3) as the random number generator.
- Thanks to Warner Losh for collecting all these fixes in
- one easy place to get them from.
-
-July 16, 2019:
- Fix field splitting to use FS value as of the time a record
- was read or assigned to. Thanks to GitHub user Cody Mello (melloc)
- for the fix. (Merged from his branch, via PR #42.) Updated
- testdir/T.split per said PR as well.
-
-June 24, 2019:
- Extract awktest.tar into testdir directory. Add some very
- simple mechanics to the makefile for running the tests and
- for cleaning up. No changes to awk itself.
-
-June 17, 2019:
- Disallow deleting SYMTAB and its elements, which creates
- use-after-free bugs. Thanks to GitHub user Cody Mello (melloc)
- for the fix. (Merged from PR #43.)
-
-June 5, 2019:
- Allow unmatched right parenthesis in a regular expression to
- be treated literally. Fixes Issue #40. Thanks to GitHub user
- Warner Losh (bsdimp) for the report. Thanks to Arnold Robbins
- for the fix.
-
-May 29,2019:
- Fix check for command line arguments to no longer require that
- first character after '=' not be another '='. Reverts change of
- August 11, 1989. Thanks to GitHub user Jamie Landeg Jones for
- pointing out the issue; from Issue #38.
-
-Apr 7, 2019:
- Update awktest.tar(p.50) to use modern options to sort. Needed
- for Android development. Thanks to GitHub user mohd-akram (Mohamed
- Akram). From Issue #33.
-
-Mar 12, 2019:
- Added very simplistic support for cross-compiling in the
- makefile. We are NOT going to go in the direction of the
- autotools, though. Thanks to GitHub user nee-san for
- the basic change. (Merged from PR #34.)
-
-Mar 5, 2019:
- Added support for POSIX-standard interval expressions (a.k.a.
- bounds, a.k.a. repetition expressions) in regular expressions,
- backported (via NetBSD) from Apple awk-24 (20070501).
- Thanks to Martijn Dekker <martijn@inlv.org> for the port.
- (Merged from PR #30.)
-
-Mar 3, 2019:
- Merge PRs as follows:
- #12: Avoid undefined behaviour when using ctype(3) functions in
- relex(). Thanks to GitHub user iamleot.
- #31: Make getline handle numeric strings, and update FIXES. Thanks
- to GitHub user arnoldrobbins.
- #32: maketab: support build systems with read-only source. Thanks
- to GitHub user enh.
-
-Jan 25, 2019:
- Make getline handle numeric strings properly in all cases.
- (Thanks, Arnold.)
-
-Jan 21, 2019:
- Merged a number of small fixes from GitHub pull requests.
- Thanks to GitHub users Arnold Robbins (arnoldrobbins),
- Cody Mello (melloc) and Christoph Junghans (junghans).
- PR numbers: 13-21, 23, 24, 27.
-
-Oct 25, 2018:
- Added test in maketab.c to prevent generating a proctab entry
- for YYSTYPE_IS_DEFINED. It was harmless but some gcc settings
- generated a warning message. Thanks to Nan Xiao for report.
-
-Aug 27, 2018:
- Disallow '$' in printf formats; arguments evaluated in order
- and printed in order.
-
- Added some casts to silence warnings on debugging printfs.
- (Thanks, Arnold.)
-
-Aug 23, 2018:
- A long list of fixes courtesy of Arnold Robbins,
- to whom profound thanks.
-
- 1. ofs-rebuild: OFS value used to rebuild the record was incorrect.
- Fixed August 19, 2014. Revised fix August 2018.
-
- 2. system-status: Instead of a floating-point division by 256, use
- the wait(2) macros to create a reasonable exit status.
- Fixed March 12, 2016.
-
- 3. space: Use provided xisblank() function instead of ispace() for
- matching [[:blank:]].
-
- 4. a-format: Add POSIX standard %a and %A to supported formats. Check
- at runtime that this format is available.
-
- 5. decr-NF: Decrementing NF did not change $0. This is a decades-old
- bug. There are interactions with the old and new value of OFS as well.
- Most of the fix came from the NetBSD awk.
-
- 6. string-conv: String conversions of scalars were sticky. Once a
- conversion to string happened, even with OFMT, that value was used until
- a new numeric value was assigned, even if OFMT differed from CONVFMT,
- and also if CONVFMT changed.
-
- 7. unary-plus: Unary plus on a string constant returned the string.
- Instead, it should convert the value to numeric and give that value.
-
- Also added Arnold's tests for these to awktest.tar as T.arnold.
-
-Aug 15, 2018:
- fixed mangled awktest.tar (thanks, Arnold), posted all
- current (very minor) fixes to github / onetrueawk
-
-Jun 7, 2018:
- (yes, a long layoff)
- Updated some broken tests (beebe.tar, T.lilly)
- [thanks to Arnold Robbins]
-
-Mar 26, 2015:
- buffer overflow in error reporting; thanks to tobias ulmer
- and john-mark gurney for spotting it and the fix.
-
-Feb 4, 2013:
- cleaned up a handful of tests that didn't seem to actually
- test for correct behavior: T.latin1, T.gawk.
-
-Jan 5, 2013:
- added ,NULL initializer to static Cells in run.c; not really
- needed but cleaner. Thanks to Michael Bombardieri.
-
-Dec 20, 2012:
- fiddled makefile to get correct yacc and bison flags. pick yacc
- (linux) or bison (mac) as necessary.
-
- added __attribute__((__noreturn__)) to a couple of lines in
- proto.h, to silence someone's enthusiastic checker.
-
- fixed obscure call by value bug in split(a[1],a) reported on
- 9fans. the management of temporary values is just a mess; i
- took a shortcut by making an extra string copy. thanks
- to paul patience and arnold robbins for passing it on and for
- proposed patches.
-
- tiny fiddle in setfval to eliminate -0 results in T.expr, which
- has irritated me for 20+ years.
-
-Aug 10, 2011:
- another fix to avoid core dump with delete(ARGV); again, many thanks
- to ruslan ermilov.
-
-Aug 7, 2011:
- split(s, a, //) now behaves the same as split(s, a, "")
-
-Jun 12, 2011:
- /pat/, \n /pat/ {...} is now legal, though bad style to use.
-
- added checks to new -v code that permits -vnospace; thanks to
- ruslan ermilov for spotting this and providing the patch.
-
- removed fixed limit on number of open files; thanks to aleksey
- cheusov and christos zoulos.
-
- fixed day 1 bug that resurrected deleted elements of ARGV when
- used as filenames (in lib.c).
-
- minor type fiddles to make gcc -Wall -pedantic happier (but not
- totally so); turned on -fno-strict-aliasing in makefile.
-
-May 6, 2011:
- added #ifdef for isblank.
- now allows -ffoo as well as -f foo arguments.
- (thanks, ruslan)
-
-May 1, 2011:
- after advice from todd miller, kevin lo, ruslan ermilov,
- and arnold robbins, changed srand() to return the previous
- seed (which is 1 on the first call of srand). the seed is
- an Awkfloat internally though converted to unsigned int to
- pass to the library srand(). thanks, everyone.
-
- fixed a subtle (and i hope low-probability) overflow error
- in fldbld, by adding space for one extra \0. thanks to
- robert bassett for spotting this one and providing a fix.
-
- removed the files related to compilation on windows. i no
- longer have anything like a current windows environment, so
- i can't test any of it.
-
-May 23, 2010:
- fixed long-standing overflow bug in run.c; many thanks to
- nelson beebe for spotting it and providing the fix.
-
- fixed bug that didn't parse -vd=1 properly; thanks to santiago
- vila for spotting it.
-
-Feb 8, 2010:
- i give up. replaced isblank with isspace in b.c; there are
- no consistent header files.
-
-Nov 26, 2009:
- fixed a long-standing issue with when FS takes effect. a
- change to FS is now noticed immediately for subsequent splits.
-
- changed the name getline() to awkgetline() to avoid yet another
- name conflict somewhere.
-
-Feb 11, 2009:
- temporarily for now defined HAS_ISBLANK, since that seems to
- be the best way through the thicket. isblank arrived in C99,
- but seems to be arriving at different systems at different
- times.
-
-Oct 8, 2008:
- fixed typo in b.c that set tmpvec wrongly. no one had ever
- run into the problem, apparently. thanks to alistair crooks.
-
-Oct 23, 2007:
- minor fix in lib.c: increase inputFS to 100, change malloc
- for fields to n+1.
-
- fixed memory fault caused by out of order test in setsval.
-
- thanks to david o'brien, freebsd, for both fixes.
-
-May 1, 2007:
- fiddle in makefile to fix for BSD make; thanks to igor sobrado.
-
-Mar 31, 2007:
- fixed some null pointer refs calling adjbuf.
-
-Feb 21, 2007:
- fixed a bug in matching the null RE in sub and gsub. thanks to al aho
- who actually did the fix (in b.c), and to wolfgang seeberg for finding
- it and providing a very compact test case.
-
- fixed quotation in b.c; thanks to Hal Pratt and the Princeton Dante
- Project.
-
- removed some no-effect asserts in run.c.
-
- fiddled maketab.c to not complain about bison-generated values.
-
- removed the obsolete -V argument; fixed --version to print the
- version and exit.
-
- fixed wording and an outright error in the usage message; thanks to igor
- sobrado and jason mcintyre.
-
- fixed a bug in -d that caused core dump if no program followed.
-
-Jan 1, 2007:
- dropped mac.code from makefile; there are few non-MacOSX
- mac's these days.
-
-Jan 17, 2006:
- system() not flagged as unsafe in the unadvertised -safe option.
- found it while enhancing tests before shipping the ;login: article.
- practice what you preach.
-
- removed the 9-years-obsolete -mr and -mf flags.
-
- added -version and --version options.
-
- core dump on linux with BEGIN {nextfile}, now fixed.
-
- removed some #ifdef's in run.c and lex.c that appear to no
- longer be necessary.
-
-Apr 24, 2005:
- modified lib.c so that values of $0 et al are preserved in the END
- block, apparently as required by posix. thanks to havard eidnes
- for the report and code.
-
-Jan 14, 2005:
- fixed infinite loop in parsing, originally found by brian tsang.
- thanks to arnold robbins for a suggestion that started me
- rethinking it.
-
-Dec 31, 2004:
- prevent overflow of -f array in main, head off potential error in
- call of SYNTAX(), test malloc return in lib.c, all with thanks to
- todd miller.
-
-Dec 22, 2004:
- cranked up size of NCHARS; coverity thinks it can be overrun with
- smaller size, and i think that's right. added some assertions to b.c
- to catch places where it might overrun. the RE code is still fragile.
-
-Dec 5, 2004:
- fixed a couple of overflow problems with ridiculous field numbers:
- e.g., print $(2^32-1). thanks to ruslan ermilov, giorgos keramidas
- and david o'brien at freebsd.org for patches. this really should
- be re-done from scratch.
-
-Nov 21, 2004:
- fixed another 25-year-old RE bug, in split. it's another failure
- to (re-)initialize. thanks to steve fisher for spotting this and
- providing a good test case.
-
-Nov 22, 2003:
- fixed a bug in regular expressions that dates (so help me) from 1977;
- it's been there from the beginning. an anchored longest match that
- was longer than the number of states triggered a failure to initialize
- the machine properly. many thanks to moinak ghosh for not only finding
- this one but for providing a fix, in some of the most mysterious
- code known to man.
-
- fixed a storage leak in call() that appears to have been there since
- 1983 or so -- a function without an explicit return that assigns a
- string to a parameter leaked a Cell. thanks to moinak ghosh for
- spotting this very subtle one.
-
-Jul 31, 2003:
- fixed, thanks to andrey chernov and ruslan ermilov, a bug in lex.c
- that mis-handled the character 255 in input. (it was being compared
- to EOF with a signed comparison.)
-
-Jul 29, 2003:
- fixed (i think) the long-standing botch that included the beginning of
- line state ^ for RE's in the set of valid characters; this led to a
- variety of odd problems, including failure to properly match certain
- regular expressions in non-US locales. thanks to ruslan for keeping
- at this one.
-
-Jul 28, 2003:
- n-th try at getting internationalization right, with thanks to volker
- kiefel, arnold robbins and ruslan ermilov for advice, though they
- should not be blamed for the outcome. according to posix, "." is the
- radix character in programs and command line arguments regardless of
- the locale; otherwise, the locale should prevail for input and output
- of numbers. so it's intended to work that way.
-
- i have rescinded the attempt to use strcoll in expanding shorthands in
- regular expressions (cclenter). its properties are much too
- surprising; for example [a-c] matches aAbBc in locale en_US but abBcC
- in locale fr_CA. i can see how this might arise by implementation
- but i cannot explain it to a human user. (this behavior can be seen
- in gawk as well; we're leaning on the same library.)
-
- the issue appears to be that strcoll is meant for sorting, where
- merging upper and lower case may make sense (though note that unix
- sort does not do this by default either). it is not appropriate
- for regular expressions, where the goal is to match specific
- patterns of characters. in any case, the notations [:lower:], etc.,
- are available in awk, and they are more likely to work correctly in
- most locales.
-
- a moratorium is hereby declared on internationalization changes.
- i apologize to friends and colleagues in other parts of the world.
- i would truly like to get this "right", but i don't know what
- that is, and i do not want to keep making changes until it's clear.
-
-Jul 4, 2003:
- fixed bug that permitted non-terminated RE, as in "awk /x".
-
-Jun 1, 2003:
- subtle change to split: if source is empty, number of elems
- is always 0 and the array is not set.
-
-Mar 21, 2003:
- added some parens to isblank, in another attempt to make things
- internationally portable.
-
-Mar 14, 2003:
- the internationalization changes, somewhat modified, are now
- reinstated. in theory awk will now do character comparisons
- and case conversions in national language, but "." will always
- be the decimal point separator on input and output regardless
- of national language. isblank(){} has an #ifndef.
-
- this no longer compiles on windows: LC_MESSAGES isn't defined
- in vc6++.
-
- fixed subtle behavior in field and record splitting: if FS is
- a single character and RS is not empty, \n is NOT a separator.
- this tortuous reading is found in the awk book; behavior now
- matches gawk and mawk.
-
-Dec 13, 2002:
- for the moment, the internationalization changes of nov 29 are
- rolled back -- programs like x = 1.2 don't work in some locales,
- because the parser is expecting x = 1,2. until i understand this
- better, this will have to wait.
-
-Nov 29, 2002:
- modified b.c (with tiny changes in main and run) to support
- locales, using strcoll and iswhatever tests for posix character
- classes. thanks to ruslan ermilov (ru@freebsd.org) for code.
- the function isblank doesn't seem to have propagated to any
- header file near me, so it's there explicitly. not properly
- tested on non-ascii character sets by me.
-
-Jun 28, 2002:
- modified run/format() and tran/getsval() to do a slightly better
- job on using OFMT for output from print and CONVFMT for other
- number->string conversions, as promised by posix and done by
- gawk and mawk. there are still places where it doesn't work
- right if CONVFMT is changed; by then the STR attribute of the
- variable has been irrevocably set. thanks to arnold robbins for
- code and examples.
-
- fixed subtle bug in format that could get core dump. thanks to
- Jaromir Dolecek <jdolecek@NetBSD.org> for finding and fixing.
- minor cleanup in run.c / format() at the same time.
-
- added some tests for null pointers to debugging printf's, which
- were never intended for external consumption. thanks to dave
- kerns (dkerns@lucent.com) for pointing this out.
-
- GNU compatibility: an empty regexp matches anything (thanks to
- dag-erling smorgrav, des@ofug.org). subject to reversion if
- this does more harm than good.
-
- pervasive small changes to make things more const-correct, as
- reported by gcc's -Wwrite-strings. as it says in the gcc manual,
- this may be more nuisance than useful. provoked by a suggestion
- and code from arnaud desitter, arnaud@nimbus.geog.ox.ac.uk
-
- minor documentation changes to note that this now compiles out
- of the box on Mac OS X.
-
-Feb 10, 2002:
- changed types in posix chars structure to quiet solaris cc.
-
-Jan 1, 2002:
- fflush() or fflush("") flushes all files and pipes.
-
- length(arrayname) returns number of elements; thanks to
- arnold robbins for suggestion.
-
- added a makefile.win to make it easier to build on windows.
- based on dan allen's buildwin.bat.
-
-Nov 16, 2001:
- added support for posix character class names like [:digit:],
- which are not exactly shorter than [0-9] and perhaps no more
- portable. thanks to dag-erling smorgrav for code.
-
-Feb 16, 2001:
- removed -m option; no longer needed, and it was actually
- broken (noted thanks to volker kiefel).
-
-Feb 10, 2001:
- fixed an appalling bug in gettok: any sequence of digits, +,-, E, e,
- and period was accepted as a valid number if it started with a period.
- this would never have happened with the lex version.
-
- other 1-character botches, now fixed, include a bare $ and a
- bare " at the end of the input.
-
-Feb 7, 2001:
- more (const char *) casts in b.c and tran.c to silence warnings.
-
-Nov 15, 2000:
- fixed a bug introduced in august 1997 that caused expressions
- like $f[1] to be syntax errors. thanks to arnold robbins for
- noticing this and providing a fix.
-
-Oct 30, 2000:
- fixed some nextfile bugs: not handling all cases. thanks to
- arnold robbins for pointing this out. new regressions added.
-
- close() is now a function. it returns whatever the library
- fclose returns, and -1 for closing a file or pipe that wasn't
- opened.
-
-Sep 24, 2000:
- permit \n explicitly in character classes; won't work right
- if comes in as "[\n]" but ok as /[\n]/, because of multiple
- processing of \'s. thanks to arnold robbins.
-
-July 5, 2000:
- minor fiddles in tran.c to keep compilers happy about uschar.
- thanks to norman wilson.
-
-May 25, 2000:
- yet another attempt at making 8-bit input work, with another
- band-aid in b.c (member()), and some (uschar) casts to head
- off potential errors in subscripts (like isdigit). also
- changed HAT to NCHARS-2. thanks again to santiago vila.
-
- changed maketab.c to ignore apparently out of range definitions
- instead of halting; new freeBSD generates one. thanks to
- jon snader <jsnader@ix.netcom.com> for pointing out the problem.
-
-May 2, 2000:
- fixed an 8-bit problem in b.c by making several char*'s into
- unsigned char*'s. not clear i have them all yet. thanks to
- Santiago Vila <sanvila@unex.es> for the bug report.
-
-Apr 21, 2000:
- finally found and fixed a memory leak in function call; it's
- been there since functions were added ~1983. thanks to
- jon bentley for the test case that found it.
-
- added test in envinit to catch environment "variables" with
- names beginning with '='; thanks to Berend Hasselman.
-
-Jul 28, 1999:
- added test in defn() to catch function foo(foo), which
- otherwise recurses until core dump. thanks to arnold
- robbins for noticing this.
-
-Jun 20, 1999:
- added *bp in gettok in lex.c; appears possible to exit function
- without terminating the string. thanks to russ cox.
-
-Jun 2, 1999:
- added function stdinit() to run to initialize files[] array,
- in case stdin, etc., are not constants; some compilers care.
-
-May 10, 1999:
- replaced the ERROR ... FATAL, etc., macros with functions
- based on vprintf, to avoid problems caused by overrunning
- fixed-size errbuf array. thanks to ralph corderoy for the
- impetus, and for pointing out a string termination bug in
- qstring as well.
-
-Apr 21, 1999:
- fixed bug that caused occasional core dumps with commandline
- variable with value ending in \. (thanks to nelson beebe for
- the test case.)
-
-Apr 16, 1999:
- with code kindly provided by Bruce Lilly, awk now parses
- /=/ and similar constructs more sensibly in more places.
- Bruce also provided some helpful test cases.
-
-Apr 5, 1999:
- changed true/false to True/False in run.c to make it
- easier to compile with C++. Added some casts on malloc
- and realloc to be honest about casts; ditto. changed
- ltype int to long in struct rrow to reduce some 64-bit
- complaints; other changes scattered throughout for the
- same purpose. thanks to Nelson Beebe for these portability
- improvements.
-
- removed some horrible pointer-int casting in b.c and elsewhere
- by adding ptoi and itonp to localize the casts, which are
- all benign. fixed one incipient bug that showed up on sgi
- in 64-bit mode.
-
- reset lineno for new source file; include filename in error
- message. also fixed line number error in continuation lines.
- (thanks to Nelson Beebe for both of these.)
-
-Mar 24, 1999:
- Nelson Beebe notes that irix 5.3 yacc dies with a bogus
- error; use a newer version or switch to bison, since sgi
- is unlikely to fix it.
-
-Mar 5, 1999:
- changed isnumber to is_number to avoid the problem caused by
- versions of ctype.h that include the name isnumber.
-
- distribution now includes a script for building on a Mac,
- thanks to Dan Allen.
-
-Feb 20, 1999:
- fixed memory leaks in run.c (call) and tran.c (setfval).
- thanks to Stephen Nutt for finding these and providing the fixes.
-
-Jan 13, 1999:
- replaced srand argument by (unsigned int) in run.c;
- avoids problem on Mac and potentially on Unix & Windows.
- thanks to Dan Allen.
-
- added a few (int) casts to silence useless compiler warnings.
- e.g., errorflag= in run.c jump().
-
- added proctab.c to the bundle outout; one less thing
- to have to compile out of the box.
-
- added calls to _popen and _pclose to the win95 stub for
- pipes (thanks to Steve Adams for this helpful suggestion).
- seems to work, though properties are not well understood
- by me, and it appears that under some circumstances the
- pipe output is truncated. Be careful.
-
-Oct 19, 1998:
- fixed a couple of bugs in getrec: could fail to update $0
- after a getline var; because inputFS wasn't initialized,
- could split $0 on every character, a misleading diversion.
-
- fixed caching bug in makedfa: LRU was actually removing
- least often used.
-
- thanks to ross ridge for finding these, and for providing
- great bug reports.
-
-May 12, 1998:
- fixed potential bug in readrec: might fail to update record
- pointer after growing. thanks to dan levy for spotting this
- and suggesting the fix.
-
-Mar 12, 1998:
- added -V to print version number and die.
-
-[notify dave kerns, dkerns@dacsoup.ih.lucent.com]
-
-Feb 11, 1998:
- subtle silent bug in lex.c: if the program ended with a number
- longer than 1 digit, part of the input would be pushed back and
- parsed again because token buffer wasn't terminated right.
- example: awk 'length($0) > 10'. blush. at least i found it
- myself.
-
-Aug 31, 1997:
- s/adelete/awkdelete/: SGI uses this in malloc.h.
- thanks to nelson beebe for pointing this one out.
-
-Aug 21, 1997:
- fixed some bugs in sub and gsub when replacement includes \\.
- this is a dark, horrible corner, but at least now i believe that
- the behavior is the same as gawk and the intended posix standard.
- thanks to arnold robbins for advice here.
-
-Aug 9, 1997:
- somewhat regretfully, replaced the ancient lex-based lexical
- analyzer with one written in C. it's longer, generates less code,
- and more portable; the old one depended too much on mysterious
- properties of lex that were not preserved in other environments.
- in theory these recognize the same language.
-
- now using strtod to test whether a string is a number, instead of
- the convoluted original function. should be more portable and
- reliable if strtod is implemented right.
-
- removed now-pointless optimization in makefile that tries to avoid
- recompilation when awkgram.y is changed but symbols are not.
-
- removed most fixed-size arrays, though a handful remain, some
- of which are unchecked. you have been warned.
-
-Aug 4, 1997:
- with some trepidation, replaced the ancient code that managed
- fields and $0 in fixed-size arrays with arrays that grow on
- demand. there is still some tension between trying to make this
- run fast and making it clean; not sure it's right yet.
-
- the ill-conceived -mr and -mf arguments are now useful only
- for debugging. previous dynamic string code removed.
-
- numerous other minor cleanups along the way.
-
-Jul 30, 1997:
- using code provided by dan levy (to whom profuse thanks), replaced
- fixed-size arrays and awkward kludges by a fairly uniform mechanism
- to grow arrays as needed for printf, sub, gsub, etc.
-
-Jul 23, 1997:
- falling off the end of a function returns "" and 0, not 0.
- thanks to arnold robbins.
-
-Jun 17, 1997:
- replaced several fixed-size arrays by dynamically-created ones
- in run.c; added overflow tests to some previously unchecked cases.
- getline, toupper, tolower.
-
- getline code is still broken in that recursive calls may wind
- up using the same space. [fixed later]
-
- increased RECSIZE to 8192 to push problems further over the horizon.
-
- added \r to \n as input line separator for programs, not data.
- damn CRLFs.
-
- modified format() to permit explicit printf("%c", 0) to include
- a null byte in output. thanks to ken stailey for the fix.
-
- added a "-safe" argument that disables file output (print >,
- print >>), process creation (cmd|getline, print |, system), and
- access to the environment (ENVIRON). this is a first approximation
- to a "safe" version of awk, but don't rely on it too much. thanks
- to joan feigenbaum and matt blaze for the inspiration long ago.
-
-Jul 8, 1996:
- fixed long-standing bug in sub, gsub(/a/, "\\\\&"); thanks to
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