Latest upstream release: 20220122
Current version/release in rawhide: 20180827
URL: https://github.com/onetrueawk/awk 


- Detailed changelog:

December 8, 2021:
	The error handling in closefile and closeall was mangled. Long
	standing warnings had been made fatal and some fatal errors went
	undetected. Thanks to Miguel Pineiro Jr. <mpj>.

Nov 03, 2021:
        getline accesses uninitialized data after getrec()
	returns 0 on EOF and leaves the contents of buf unchanged.
	Thanks to Volodymyr Gubarkov, and Todd C Miller.

Oct 12, 2021:
	The fix for #83 changed the code to insert 2 chars, but the
	call to adjbuf just above it only allows for 1 char. This can
	cause a heap buffer overflow.

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
	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>
	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>.

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> 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.