2015-05-19         Arnold D. Robbins     <arnold@skeeve.com>

	* 4.1.3: Release tar ball made.

2015-05-15         Andrew J. Schorr     <aschorr@telemetry-investments.com>

	* symbol.c (load_symbols): Plug minor memory leak by calling unref(tmp)
	on "identifiers" string after assoc_lookup is done with it.

2015-05-05         Arnold D. Robbins     <arnold@skeeve.com>

	* awkgram.y (yylex): Yet Another Fix for parsing bracket
	expressions. Thanks yet again to Andrew Schorr. Maybe it's
	even finally nailed down now.

	Unrelated:

	* config.guess, config.sub: Get latest versions.

2015-05-01         Arnold D. Robbins     <arnold@skeeve.com>

	* awkgram.y: Make sure values are not null in param list.
	Avoids core dump for `function f(func, a) {}'. Thanks to
	Tibor Palinkas <libmawk@igor2.repo.hu>.

2015-04-30         Arnold D. Robbins     <arnold@skeeve.com>

	* Makefile.am: Take --program-prefix into account when
	installing/uninstalling the symlinks, especially 'awk'.
	Thanks to Steffen Nurpmeso <sdaoden@yandex.com> for
	the report.

	Unrelated:

	* awkgram.y (yylex): Yet Another Fix for parsing bracket
	expressions. Thanks again to Andrew Schorr.

2015-04-29         Arnold D. Robbins     <arnold@skeeve.com>

	* 4.1.2: Release tar ball made.

2015-04-28         Arnold D. Robbins     <arnold@skeeve.com>

	* awkgram.y (yylex): Rework the bracket handling from zero.
	Thanks to Michal Jaegermann for yet another test case.

	Unrelated:

	* eval.c (setup_frame): Restore call-by-value for $0. This was
	necessitated by the changes on 2014-11-11 for conserving
	memory use. Thanks to Andrew Schorr for the report and isolating
	the cause of the problem.

2015-04-27         Arnold D. Robbins     <arnold@skeeve.com>

	* awkgram.y (yylex): Make change of Jan 7 for parsing regexps
	work better. Thanks to Nelson Beebe.

2015-04-26         Arnold D. Robbins     <arnold@skeeve.com>

	* dfa.c: Sync with grep.

2015-04-16         Arnold D. Robbins     <arnold@skeeve.com>

	* builtin.c (do_strftime): For bad time_t values, return "".

2015-04-16         Andrew J. Schorr     <aschorr@telemetry-investments.com>

	* node.c (r_force_number): If strtod sets errno, then force the
	numeric value in node->numbr to zero. For subnormal values, strtod
	sets errno but does not return zero, and we don't want to retain
	those subnormal values.

2015-04-16         Arnold D. Robbins     <arnold@skeeve.com>

	* builtin.c (do_strftime): Use a double for the timestamp and
	check that the value is within range for a time_t.

	Unrelated:

	* regex_internal.h (test_malloc, test_realloc): Use %lu in printf
	format for error messages. Thanks to Michal Jaegermann for
	pointing this out.

	Unrelated:

	* NEWS: Updated.

2015-04-14         Arnold D. Robbins     <arnold@skeeve.com>

	* builtin.c (do_strftime): Restore checking for negative result and
	add check that time_t is > 0 --- means we're assigning a negative value
	to an unsigned time_t. Thanks again to Glaudiston Gomes da Silva
	<glaudistong@gmail.com>.
	
	If localtime() or gmtime() return NULL, return a null string.
	Thanks to Andrew Schorr.

	Unrelated:
	* builtin.c (call_sub): Fix for indirect gensub, 3 args now works.

2015-04-13         Arnold D. Robbins     <arnold@skeeve.com>

	* regcomp.c (analyze): Prevent malloc(0).
	* regex_internal.h (test_malloc, test_realloc): New functions
	that check for zero count.
	(re_malloc, re_realloc): Adjust to call the new functions for gawk.
	* regexec.c (buid_trtable, match_ctx_clean): Replace malloc/free
	with re_malloc/re_free.

	Unrelated:

	* builtin.c (do_strftime): Disable checking timestamp value for less
	than zero. Allows times before the epoch to work with strftime.
	Thanks to Glaudiston Gomes da Silva <glaudistong@gmail.com>
	for raising the issue.

2015-04-12         Arnold D. Robbins     <arnold@skeeve.com>

	* Makefile.am (efence): Make this link again.
	Thanks to Michal Jaegermann for pointing out the problem.

2015-04-08        John E. Malmberg       <wb8tyw@qsl.net>

	* custom.h: VMS shares some code paths with ZOS_USS in
	building gawkfts extension.

2015-04-08         Arnold D. Robbins     <arnold@skeeve.com>

	Factor out opening of /dev/XXX files from /inet.
	Enable interpretation of special filenames for profiling output.

	* awk.h (devopen_simple): Add declaration.
	* io.c (devopen_simple): New routine.
	(devopen): Call devopen_simple as appropriate.
	* profile.c (set_prof_file): Call devopen_simple as appropriate,
	some additonal logic to hande fd to fp conversion.

	Unrelated:

	* main.c (usage): Add a comment for translators.

2015-04-08  Eli Zaretskii  <eliz@gnu.org>

	* profile.c (set_prof_file): Interpret a file name of "-" to mean
	standard output.

2015-04-06         Arnold D. Robbins     <arnold@skeeve.com>

	* awk.h (force_number): Add `!= 0' check to bitwise operation.
	* awkgram.y: Same, many places.
	(check_special): Simplify code for checking extension flags.

2015-04-05         Arnold D. Robbins     <arnold@skeeve.com>

	* awkgram.y (install_builtins): If do_traditional is true, do not
	install gawk extensions flagged with GAWKX.  Similarly, if do_posix
	is true, do not install functions flagged with NOT_POSIX.
	This fixes a problem with spurious lint complaints about shadowing
	a global variable that is not valid in traditional or posix mode.
	Thanks to Andrew Schorr for finding the problem and supplying
	initial code; I did it slightly differently.

2015-03-31         Arnold D. Robbins     <arnold@skeeve.com>

	* awk.h (call_sub): Renamed from call_sub_func.
	(call_match, call_split_func): Declare.
	* builtin.c (call_sub): Renamed from call_sub_func.
	(call_match, call_split_func): New functions.
	* interpret.h (r_interpret): Call new functions as appropriate.
	* node.c (r_unref): Revert change to handle Node_regex, not needed.

2015-03-31         Arnold D. Robbins     <arnold@skeeve.com>

	* awk.h (r_get_field): Declare.
	* builtin.c (call_sub_func): Rearrange the stack to be what
	the buitin function expects.
	* eval.c (r_get_field): Make extern.

2015-03-24         Arnold D. Robbins     <arnold@skeeve.com>

	* awkgram.y (make_regnode): Make extern.
	* awk.h (make_regnode): Declare.
	* builtin.c (call_sub_func): Start on reworking the stack to
	be what do_sub() expects. Still needs work.
	* interpret.h (r_interpret): Add a cast in comparison with do_sub().
	* node.c (r_unref): Handle Node_regex nodes.

2015-03-24         Andrew J. Schorr     <aschorr@telemetry-investments.com>

	* interpret.h (r_interpret): When Op_K_exit has an argument of
	Nnull_string, do not update exit_val, since no value was supplied.

2015-03-20         Arnold D. Robbins     <arnold@skeeve.com>

	Start on fixing indirect calls of builtins.

	* awk.h (call_sub_func): Add declaration.
	* awkgram.y (lookup_builtin): Handle length, sub functions.
	(install_builtin): Handle length function.
	* builtin.c (call_sub_func): New function.
	* interpret.h (r_interpret): If calling do_sub, do it through
	call_sub_func().

2015-03-18         Arnold D. Robbins     <arnold@skeeve.com>

	* config.guess, config.sub: Updated, from libtool 2.4.6.

2015-03-17         Arnold D. Robbins     <arnold@skeeve.com>

	* profile.c (pp_number): Allocate enough room to print the number
	in all cases. Was a problem mixing -M with profiling with a really
	big number. Thanks to Hermann Peifer for the bug report.

2015-03-08         Arnold D. Robbins     <arnold@skeeve.com>

	* re.c (regexflags2str): Removed. It was redundant.

2015-02-27         Arnold D. Robbins     <arnold@skeeve.com>

	* symbol.c (check_param_names): Fix argument order in memset() call.
	* configure.ac: Use AC_SEARCH_LIBS instead of AC_CHECK_LIB. This fixes
	a long-standing problem where `-lm' was used twice in the final
	compilation line.

2015-02-24         Arnold D. Robbins     <arnold@skeeve.com>

	* POSIX.STD: Update copyright year.
	* awkgram.y (yylex): Allow \r after \\ line continuation everywhere.
	Thanks to Scott Rush <scott.rush@honeywell.com> for the report.

2015-02-13         Arnold D. Robbins     <arnold@skeeve.com>

	* awkgram.y (yylex): Be more careful about passing true to
	nextc() when collecting a regexp.  Some systems' iscntrl()
	are not as forgiving as GLIBC's. E.g., Solaris.
	Thanks to Dagobert Michelsen <dam@baltic-online.de> for
	the bug report and access to systems to check the fix.

2015-02-12         Arnold D. Robbins     <arnold@skeeve.com>

	* POSIX.STD: Update with info about function parameters.
	* configure.ac: Remove test for / use of dbug library.

2015-02-11         Arnold D. Robbins     <arnold@skeeve.com>

	* gawkapi.h: Fix spelling error in comment.

2015-02-07         Arnold D. Robbins     <arnold@skeeve.com>

	* regcomp.c, regex.c, regex.h, regex_internal.c, regex_internal.h,
	regexec.c: Sync with GLIBC. Mostly copyright date updates.

2015-02-05         Andrew J. Schorr     <aschorr@telemetry-investments.com>

	* eval.c (set_IGNORECASE): If IGNORECASE has a numeric value, try
	using that before treating it as a string.  This fixes a problem
	where setting -v IGNORECASE=0 on the command line was not working
	properly.

2015-02-01         Arnold D. Robbins     <arnold@skeeve.com>

	Move POSIX requirement for disallowing paramater names with the
	same name as a function into --posix.

	* NEWS: Document it.
	* awkgram.y (parse_program): Check do_posix before calling
	check_param_names().
	* symbol.c (check_param_names): Set up a fake node and call
	in_array() for function parameter names instead of linear
	searching the function list a second time. Thanks to Andrew
	Schorr for the motivation.

2015-01-30         Arnold D. Robbins     <arnold@skeeve.com>

	Don't allow function parameter names to be the same as function
	names - required by POSIX. Bug first reported in comp.lang.awk.

	In addition, don't allow use of a parameter as a function name
	in a call (but it's ok in indirect calls).

	* NEWS: Updated.
	* awk.h (check_param_names): Add declaration.
	* awkgram.y (at_seen): New variable. Communicates between
	yylex() and the parser.
	(FUNC_CALL production): Check at_seen and check that the identifier
	is a function name.
	(parse_program): Call check_param_names() and set errcount.
	(yylex): Set at_seen after seeing an at-sign.
	* symbol.c (check_param_names): New function.

2015-01-24         Arnold D. Robbins     <arnold@skeeve.com>

	Infrastructure updates.

	Bison 3.0.4. Automake 1.15. Gettext 0.19.4.

2015-01-20         Arnold D. Robbins     <arnold@skeeve.com>

	* gawkapi.c (api_set_array_element): Remove useless call to
	make_aname.
	* symbol.c (load_symbols): Ditto.
	Thanks to Andrew Schorr for pointing out the problem.

2015-01-19         Arnold D. Robbins     <arnold@skeeve.com>

	* awkgram.c: Update to bison 3.0.3.
	* command.c: Ditto.
	* NEWS: Note same.

2015-01-15         Arnold D. Robbins     <arnold@skeeve.com>

	* dfa.h, dfa.c: Sync with grep. Mainly copyright updates.
	* getopt.c, getopt.h, getopt1.c getopt_int.h: Sync with GLIBC.
	Mainly copyright updates, one minor code fix.

2015-01-14         Arnold D. Robbins     <arnold@skeeve.com>

	Remove deferred variables.

	* awk.h (register_deferred_variable): Remove declaration.
	* awkgram.y (is_deferred_variable, process_deferred,
	symtab_used, extensions_used, deferred_variables,
	process_deferred): Remove declarations, bodies, and uses.
	* builtin.c (do_length): Update comment.
	* main.c (init_vars): Just call load_procinfo() and `load_environ()'.

2015-01-07         Arnold D. Robbins     <arnold@skeeve.com>

	* configure.ac: Update debug flags if developing.
	* awkgram.y (yylex): Regex parsing bug fix for bracket expressions.
	Thanks to Mike Brennan for the report.
	* builtin.c (format_tree): Catch non-use of count$ for dynamic
	field width or precision.

	Unrelated:

	Load deferred variables if extensions are used; they might
	want to access PROCINFO and/or ENVIRON. Thanks to Andrew Schorr
	for pointing out the issue.

	* awkgram.y (extensions_used): New variable. Set it on @load.
	(do_add_scrfile): Set it on -l.
	(process_deferred): Check it also.

2014-12-10         Arnold D. Robbins     <arnold@skeeve.com>

	* dfa.c: Sync with GNU grep.

2014-11-26         Arnold D. Robbins     <arnold@skeeve.com>

	* builtin.c (do_sub): Improve wording of gensub warnings.

2014-11-25         Arnold D. Robbins     <arnold@skeeve.com>

	* builtin.c (do_sub): For gensub, add more warnings for invalid
	third argument.

2014-11-23         Arnold D. Robbins     <arnold@skeeve.com>

	* awk.h: Move all inline functions to the bottom of the file.
	Keeps modern GCC happier.

2014-11-22         Arnold D. Robbins     <arnold@skeeve.com>

	* awk.h (emalloc, realloc): Redefine in terms of ...
	(emalloc_real, eralloc_real): New static inline functions.
	(fatal): Move definition up.
	* gawkmisc.c (xmalloc): If count is zero, make it one for older
	mallocs that require size > 0 (such as z/OS).

2014-11-21         Arnold D. Robbins     <arnold@skeeve.com>

	* main.c: Remove a debugging // comment.
	* NOTES: Removed.

	Unrelated:

	Revert changes of 2014-11-20 from Paul Eggert. Causes failures
	on z/OS.

	Unrelated: Avoid unnecessary copying of $0.

	* interpret.h (UNFIELD): New macro.
	(r_interpret): Use it where *lhs is assigned to.

2014-11-20  Paul Eggert  <eggert@cs.ucla.edu>

	Port to systems where malloc (0) and/or realloc(P, 0) returns NULL.
	* gawkmisc.c (xmalloc):
	* xalloc.h (realloc):
	Do not fail if malloc(0) or realloc(P, 0) returns NULL.
	Fail only when the allocator returns null when attempting to
	allocate a nonzero number of bytes.

2014-11-19         Arnold D. Robbins     <arnold@skeeve.com>

	Infrastructure upgrades:

	* Automake 1.14.1, Gettext 0.19.3, Libtool 2.4.3.
	* compile, extension/build-aux/compile: New files.

2014-11-19  gettextize  <bug-gnu-gettext@gnu.org>

	* configure.ac (AM_GNU_GETTEXT_VERSION): Bump to 0.19.3.

2014-11-16         Arnold D. Robbins     <arnold@skeeve.com>

	* interpret.h: Revert change of 2014-11-11 since it breaks
	certain uses.

	Unrelated:

	* dfa.c: Sync with GNU grep.

2014-11-15         Arnold D. Robbins     <arnold@skeeve.com>

	* array.c, awk.h, awkgram.y, builtin.c, dfa.c, eval.c, field.c,
	interpret.h, io.c, main.c, mpfr.c, node.c, re.c, regex_internal.h,
	replace.c: Remove all uses of MBS_SUPPORT.
	* regex_internal.h: Disable wide characters on DJGPP.
	* mbsupport.h: Rework to be needed only for DJGPP.

2014-11-11         Arnold D. Robbins     <arnold@skeeve.com>

	Don't let memory used increase linearly in the size of
	the input.  Problem reported by dragan legic
	<dragan.legic@yandex.ru>.

	* field.c (set_record): NUL-terminate the buffer.
	* interpret.h (r_interpret): Op_field_spec: if it's $0, increment
	the valref.  Op_store_var: if we got $0, handle it appropriately.

2014-11-10         Arnold D. Robbins     <arnold@skeeve.com>

	Reorder main.c activities so that we can set a locale on the
	command line with the new, for now undocumented, -Z option.

	* main.c (parse_args, set_locale_stuff): New functions.
	(stopped_early): Made file level static.
	(optlist, optab): Add new argument.
	(main): Adjust ordering and move inline code into new functions.

2014-11-09         Andrew J. Schorr     <aschorr@telemetry-investments.com>

	* gawkapi.c (node_to_awk_value): When the type wanted is AWK_UNDEFINED
	and a it's a Node_val set to Nnull_string, return AWK_UNDEFINED instead
	of AWK_NUMBER 0.

2014-11-03         Norihiro Tanaka       <noritnk@kcn.ne.jp>

	* re.c (research): Use dfa superset to improve matching speed.

2014-11-02         Arnold D. Robbins     <arnold@skeeve.com>

	* profile.c (div_on_left_mul_on_right): New function.
	(parenthesize): Call it.

2014-10-30         Arnold D. Robbins     <arnold@skeeve.com>

	* configure: Regenerated after fix to m4/readline.m4.

	Unrelated; fixes to profiling. Thanks to Hermann Peifer and
	Manuel Collado for pointing out problems:

	* profile.c (pprint): For Op_unary_minus, parenthesize -(-x)
	correctly.
	(prec_level): Get the levels right (checked the grammar).
	(is_unary_minus): New function.
	(pp_concat): Add checks for unary minus; needs to be parenthesized.

2014-10-29         Arnold D. Robbins     <arnold@skeeve.com>

	* dfa.c: Sync with GNU grep. Again, again.

2014-10-28         Arnold D. Robbins     <arnold@skeeve.com>

	* dfa.c: Sync with GNU grep. Again.

2014-10-25         Arnold D. Robbins     <arnold@skeeve.com>

	* dfa.c: Sync with GNU grep.

2014-10-17         John E. Malmberg      <wb8tyw@qsl.net>

	* ext.c (close_extensions): Test for null pointer since
	since this can be called by signal handler before the
	pointers are initialized.

2014-10-15         Arnold D. Robbins     <arnold@skeeve.com>

	Make sane the handling of AWKPATH and AWKLIBPATH:

	1. Don't explicitly search "."; it must be in the path either
	physically or as null element a la the shell's $PATH
	2. If environment's value was empty, use built-in default value.
	3. Set ENVIRON["AWK*PATH"] to the path used.

	* io.c (path_info): Remove try_cwd member.
	(get_cwd): Removed, not needed anymore.
	(do_find_source): Don't do explicit check in current directory.
	It must come from the AWKPATH or AWKLIBPATH variable.
	* main.c (path_environ): If value from environment was empty,
	set it to the default.  This is how gawk has behaved since 2.10.

2014-10-13         Arnold D. Robbins     <arnold@skeeve.com>

	* regcomp.c (__re_error_msgid): Make error message for REG_EBRACK
	more helpful - also used for unmatched [:, [., [=.
	Thanks to Davide Brini for raising the issue.

2014-10-12         KO Myung-Hun          <komh78@gmail.com>

	Fixes for OS/2:

	* Makefile.am (install-exec-hook, uninstall-links): Use $(EXEEXT).
	* getopt.h: Redefinitions if using KLIBC.
	* io.c (_S_IFDIR, _S_IRWXU): Define if the more standard versions
	are available.

2014-10-12         Arnold D. Robbins     <arnold@skeeve.com>

	* README: Remove Pat Rankin from VMS duties, per his request.

2014-10-08         Arnold D. Robbins     <arnold@skeeve.com>

	* dfa.c: Sync with GNU grep.

2014-10-05         Arnold D. Robbins     <arnold@skeeve.com>

	* profile.c (pprint): Fix typo in header. Sheesh.

2014-10-04         Arnold D. Robbins     <arnold@skeeve.com>

	* profile.c (pp_string_fp): Fix breaklines case to actually
	output the current letter. This broke at gawk 4.0.0. Sigh.
	Thanks to Bert Bos (bert@w3.org) for the report.

2014-09-29         Andrew J. Schorr     <aschorr@telemetry-investments.com>

	* main.c (main): In optlist, it should say "h", not "h:", since there
	is no argument for the help option.  Thanks to Joep van Delft for
	the bug report.

2014-09-29         Arnold D. Robbins     <arnold@skeeve.com>

	* gawkapi.h: Minor edits to sync with documentation. Does not
	influence the behavior of the API.

2014-09-28         Arnold D. Robbins     <arnold@skeeve.com>

	* command.y (cmdtab): Add "where" as an alias for "backtrace".
	Finally!

	Unrelated:

	* dfa.c: Sync with GNU grep.

2014-09-27         Arnold D. Robbins     <arnold@skeeve.com>

	* awkgram.y (check_for_bad): Bitwise-and the bad character with 0xFF
	to avoid sign extension into a large integer.

	Unrelated:

	* configure.ac: Add an option to enable locale letters in identifiers.
	Undocumented and subject to being rescinded at any time in the future.
	* NEWS: Mention to look at configure --help.

	Unrelated:

	* profile.c (pprint): Use "rule(s)" instead of "block(s)" in the
	header.

2014-09-23         Arnold D. Robbins     <arnold@skeeve.com>

	* awkgram.y (yylex): Don't check for junk characters inside
	quoted strings.  Caused issues on DJGPP and Solaris.

	Unrelated:

	* io.c (devopen): Straighten things out with respect to
	compatibility with BWK awk.

2014-09-19         Arnold D. Robbins     <arnold@skeeve.com>

	* awkgram.y: Further commentary as to the treacherousness
	of isalnum and isalpha.

2014-09-15         Arnold D. Robbins     <arnold@skeeve.com>

	Finish removing use of isalpha and isalnum.

	* awk.h (is_alpha, is_alnum, is_identchar): Add declarations.
	* awkgram.y (yylex): Use is_alpha.
	(is_alpha, is_alnum): New functions.
	(is_identchar): Use is_alnum.
	* builtin.c (r_format_tree): Use is_alpha, is_alnum.
	* command.y (yylex): Use is_alpha, is_identchar.
	* ext.c (is_letter): Use is_alpha.
	(is_identifier_char): Removed; replaced uses with is_identchar.
	* main.c (arg_assign): Use is_alpha, is_alnum.
	* node.c (r_force_number): Use is_alpha.

2014-09-14         Arnold D. Robbins     <arnold@skeeve.com>

	* awkgram.y (is_identchar): Change from simple macro to function
	since use of isalnum() let non-ASCII letters slip through into
	identifiers.

2014-09-07         Arnold D. Robbins     <arnold@skeeve.com>

	* awk.h: Move libsigsegv stuff to ...
	* main.c: here. Thanks to Yehezkel Bernat for motivating
	the cleanup.
	* symbol.c (make_symbol, install, install_symbol): Add const to
	first parameter. Adjust decls and fix up uses.

2014-09-05         Arnold D. Robbins     <arnold@skeeve.com>

	Add builtin functions to FUNCTAB for consistency.

	* awk.h (Node_builtin_func): New node type.
	(install_builtins): Declare new function.
	* awkgram.y [DEBUG_USE]: New flag value for debug functions; they
	don't go into FUNCTAB.
	(install_builtins): New function.
	* eval.c (nodetypes): Add Node_builtin_func.
	* interpret.h (r_interpret): Rework indirect calls of built-ins
	since they're now in the symbol table.
	* main.c (main): Call `install_builtins'.
	* symbol.c (install): Adjust for Node_builtin_func.
	(load_symbols): Ditto.

2014-09-04         Arnold D. Robbins     <arnold@skeeve.com>

	* profile.c (pprint): Case Op_K_for: Improve printing of
	empty for loop header.

	Unrelated: Make indirect function calls work for built-in and
	extension functions.

	* awkgram.y (lookup_builtin): New function.
	* awk.h (builtin_func_t): New typedef.
	(lookup_builtin): Declare it.
	* interpret.h (r_interpret): For indirect calls, add code to
	find and call builtin functions, and call extension functions.

2014-09-01         Arnold D. Robbins     <arnold@skeeve.com>

	* builtin.c (do_substr): Return "" instead of null string in case
	result is passed to length() with --lint. Based on discussions in
	comp.lang.awk.

	Unrelated:

	* interpret.h (r_interpret): For indirect function call, separate
	error message if lookup returned NULL. Otherwise got a core dump.
	Thanks to "Kenny McKormack" for the report in comp.lang.awk.

2014-08-27         Arnold D. Robbins     <arnold@skeeve.com>

	* configure.ac: Add test for strcasecmp.
	* regcomp.c: Remove special case code around use of strcasecmp().
	* replace.c: Include missing/strncasecmp.c if either strcasecmp()
	or strncasecmp() aren't available.

2014-08-26         Arnold D. Robbins     <arnold@skeeve.com>

	* regcomp.c, regex_internal.c: Sync with GBLIC. Why not.

2014-08-18         Arnold D. Robbins     <arnold@skeeve.com>

	* symbol.c: General formatting cleanup.

2014-08-15         Arnold D. Robbins     <arnold@skeeve.com>

	* main.c (usage): Adjust whitespace for -L and add "invalid"
	as a possible value for it.  Report from Robert P. J. Day
	<rpjday@crashcourse.ca>.

2014-08-14         Arnold D. Robbins     <arnold@skeeve.com>

	* Makefile.am (SUBDIRS): Put awklib after doc so that examples
	get extracted when the doc changes.

2014-08-13         Arnold D. Robbins     <arnold@skeeve.com>

	* builtin.c (do_sub): Move initial allocation of the replacement
	string down towards code to do the replacement, with a (we hope)
	better guesstimate of how much to initially allocate. The idea
	is to avoid unnecessary realloc() calls by making a better guess
	at how much to allocate.  This came up in an email discussion
	with Tom Dickey about mawk's gsub().

2014-08-12         Arnold D. Robbins     <arnold@skeeve.com>

	OFS being set should rebuild $0 using previous OFS if $0
	needs to be rebuilt. Thanks to Mike Brennan for pointing this out.

	* awk.h (rebuild_record): Declare.
	* eval.c (set_OFS): If not being called from var_init(), check
	if $0 needs rebuilding. If so, parse the record fully and rebuild it.
	Make OFS point to a separate copy of the new OFS for next time, since
	OFS_node->var_value->stptr was already updated at this point.
	* field.c (rebuild_record): Is now extern instead of static.
	Use OFS and OFSlen instead of the value of OFS_node.

	Unrelated:

	* Makefile.am (RM): Define for makes that don't have it,
	such as on OpenBSD.  Thanks to Jeremie Courreges-Anglas
	<jca@wxcvbn.org> for the report.

2014-08-05         Arnold D. Robbins     <arnold@skeeve.com>

	Bug fix: For MPFR sqrt(), need to set precision of result to be
	the same as that of the argument. Doesn't hurt other functions.
	See test/mpfrsqrt.awk. Thank to Katie Wasserman <katie@wass.net>
	for the bug report.

	* mpfr.c (do_mpfr_func): New function. Runs code for MPFR functions
	while still enabling debugging. Add call here to mpfr_set_prec().
	Original code from SPEC_MATH macro.
	(SPEC_MATH): Change macro to call do_mpfr_func().

	Next MPFR bug fix: The % operator gave strange results for negative
	numerator. Thanks again to Katie Wasserman for the bug report.

	* mpfr.c (mpg_mod): Use mpz_tdiv_qr() instead of mpz_mod(). From
	the GMP doc, mpz_mod() should have worked; it's not clear why
	it doesn't.

2014-08-03         Arnold D. Robbins     <arnold@skeeve.com>

	* builtin.c (format_tree): Don't need to check return value of
	wctombr for -2. Thanks to Eli Zaretskii for pointing this out.
	
	Unrelated:

	* gawkapi.h: Fix doc for API get_record - errcode needs to
	be greater than zero.
	* interpret.h (r_interpret): Move setting of ERRNO to here, from ...
	* io.c (inrec): ... here. Makes the code cleaner.

2014-08-03         Andrew J. Schorr     <aschorr@telemetry-investments.com>

	* awkgram.y (getfname): Match on either ptr or ptr2 so --profile
	will work in -M (MPFR bignum) mode.

2014-07-31         Arnold D. Robbins     <arnold@skeeve.com>

	* builtin.c (format_tree): Make %c handling more sane on Windows.
	Rework the lint messages.

	Unrelated:

	* dfa.c: Sync with GNU grep. Mainly white space differences.

	Unrelated:

	* mpfr.c (cleanup_mpfr): New function to deallocate _mpf_t1
	and _mpf_t2; removes some valgrind warnings.
	* awk.h (cleanup_mpfr): Add declaration.
	* main.c (main): Add call to `cleanup_mpfr'.

2014-07-25         Arnold D. Robbins     <arnold@skeeve.com>

	* main.c (main): Add a warning message if -M is used and gawk was
	compiled without MPFR/GMP.

2014-07-24         Arnold D. Robbins     <arnold@skeeve.com>

	* main.c (usage): Put text for `-n' *after* text for `-m'.
	Report from Robert P. J. Day <rpjday@crashcourse.ca>.

	Fix problems with I/O errors reported by Assaf Gordon
	<assafgordon@gmail.com>:

	* io.c (inrec): Change type to bool to make calling easier. Add
	check in non-EOF case for error, and if so, return false.
	Update ERRNO in case there is an ENDFILE block.
	* awk.h (inrec): Change type in declaration.
	* interpret.h (r_interpret): Change call of inrec() to boolean
	notation.

2014-07-10         Arnold D. Robbins     <arnold@skeeve.com>

	* awkgram.y (check_for_bad): New routine to do the fatal message,
	with smarter checking.
	(nextc): Call it as appropriate.

	* builtin.c (format_tree): Add check for bad returns from mbrlen
	to avoid trying to malloc (size_t) -1 bytes. Thanks to
	mail.green.fox@gmail.com for the bug report.

2014-07-03         Arnold D. Robbins     <arnold@skeeve.com>

	* awkgram.y (nextc): Add bool check_for_bad parameter to check
	for bad characters in the source program.
	(yylex): Adjust calls.

2014-06-22         Paul Eggert          <eggert@penguin.cs.ucla.edu>

	Bring in from GNULIB:

	regex: fix memory leak in compiler
	Fix by Andreas Schwab in:
	https://sourceware.org/ml/libc-alpha/2014-06/msg00462.html
	* lib/regcomp.c (parse_expression): Deallocate partially
	constructed tree before returning error.

2014-06-19         Arnold D. Robbins     <arnold@skeeve.com>

	* builtin.c (do_sub): Add more info to leading comment.
	Add some whitespace in the code.

2014-06-08         Arnold D. Robbins     <arnold@skeeve.com>

	* dfa.c: Sync with GNU grep.

2014-06-03         Arnold D. Robbins     <arnold@skeeve.com>

	* dfa.c (mbs_to_wchar): Define a macro if not MBS.

2014-05-29         Arnold D. Robbins     <arnold@skeeve.com>

	* dfa.c: Sync with GNU grep.

2014-05-26         Arnold D. Robbins     <arnold@skeeve.com>

	* io.c (inetfile): Change return type to bool.  Wrap code
	with ifdef HAVE_SOCKETS so that it'll compile on DJGPP.

2014-05-22         Andrew J. Schorr     <aschorr@telemetry-investments.com>

	Allow any redirected getline inside BEGINFILE/ENDFILE.

	* awkgram.y (LEX_GETLINE): Only require a redirection and not also
	a variable if getline is in a BEGINFILE or ENDFILE rule.
	* interpret.h (Op_K_getline_redir): Remove check and fatal error.

2014-05-20         Arnold D. Robbins     <arnold@skeeve.com>

	* dfa.c (dfaexec): Minor sync with GNU grep.

2014-05-14         Arnold D. Robbins     <arnold@skeeve.com>

	* custom.h (_GL_PURE): Move definition to here. Sigh.
	* dfa.h, dfa.c: Sync with GNU grep. Sigh.

	Unrelated:

	* custom.h: Remove stuff for Ultrix 4.3. No one has such
	systems anymore; this just got missed earlier.

2014-05-11         Arnold D. Robbins     <arnold@skeeve.com>

	* debug.c (do_eval): Repair fix of 2014-05-09 and use
	assoc_remove to take @eval out of the function table.
	* symbol.c: Fix a comment.  This file needs some work.

2014-05-10         Arnold D. Robbins     <arnold@skeeve.com>

	* io.c (get_a_record): Finish TERMNEAREND handling in case
	we don't have a regular file but aren't going to get more data.
	Added some additional comments.

2014-05-09         Arnold D. Robbins     <arnold@skeeve.com>

	* debug.c (do_eval): Don't free `f' which points into the context
	that was previously freed. Bug reported by Jan Chaloupka
	<jchaloup@redhat.com>.  Apparently introduced with move to
	SYMTAB and FUNCTAB, but only showed up on Fedora 20 and Ubuntu 14.04,
	which have a newer glibc.
	(do_eval): Fix a memory leak seen by valgrind on Fedora 20 and
	Ubuntu 14.04: the new SRCFILE that is added wasn't released.

	Unrelated:

	* io.c (get_a_record): Handle return of TERMNEAREND when the
	entire file has been read into the buffer and we're using a
	regex for RS. Bug report by Grail Dane <grail69@hotmail.com>.

2014-05-04         Arnold D. Robbins     <arnold@skeeve.com>

	* debug.c (debug_prog): Change check for GAWK_RESTART so that it
	actually works. Bug fix: run command in debugger would start
	over again but not actually start running the program.

2014-04-25         Andrew J. Schorr     <aschorr@telemetry-investments.com>

	* io.c (two_way_open): In forked child, reset SIGPIPE to SIG_DFL.
	Fixes problems with "broken pipe" errors from child processes,
	restoring 4.1.0 and earlier behavior. Thanks to Daryl F
	<wyatt@prairieturtle.ca> for the report.
	(gawk_popen): Ditto.

2014-04-25         Arnold D. Robbins     <arnold@skeeve.com>

	* dfa.h, dfa.c: Merge with GNU grep; lots of forward motion.

2014-04-24         Arnold D. Robbins     <arnold@skeeve.com>

	Update xalloc.h for pending merge with dfa.

	* xalloc.h (xstrdup): Implement this.
	(x2nrealloc): Incorporate changed logic from GNULIB.

2014-04-20         Andrew J. Schorr     <aschorr@telemetry-investments.com>

	* io.c (struct inet_socket_info): Define new structure
	for use in parsing special socket filenames.
	(inetfile): Parse all components of the special socket filename
	into the struct inet_socket_info.  Returns true only if it is a
	valid socket fliename, unlike the previous version which checked
	for the '/inet[46]?/' prefix only.
	(redirect): Patch to use updated inetfile() function.
	(devopen): Remove logic to parse socket filenames, since this has
	been moved into the inetfile() function.
	(two_way_open): Update args to inetfile().

2014-04-18         Arnold D. Robbins     <arnold@skeeve.com>

	* configure.ac: Change adding of -export-dynamic for GCC to be
	-Wl,-export-dynamic, which then works for PCC also.

2014-04-11         Arnold D. Robbins     <arnold@skeeve.com>

	* io.c (closemabyesocket): Define if not defined, e.g. building
	without socket code. Thanks to dave.gma@googlemail.com (Dave Sines)
	for the report.

2014-04-08         Arnold D. Robbins     <arnold@skeeve.com>

	* 4.1.1: Release tar ball made.

2014-04-08         Arnold D. Robbins     <arnold@skeeve.com>

	* README: Update.
	* configure.ac: Bump version.

2014-04-03         Arnold D. Robbins     <arnold@skeeve.com>

	* regcomp.c (parse_bracket_exp): Move a call to `re_free' inside
	an ifdef. Makes the code marginally cleaner.

2014-03-30         Arnold D. Robbins     <arnold@skeeve.com>

	* dfa.c: Sync with GNU grep.

2014-03-28         Arnold D. Robbins     <arnold@skeeve.com>

	* configure.ac: Remove duplicate AC_HEADER_TIME and rearrange
	order of macros some. May help on older systems.

2014-03-23         Arnold D. Robbins     <arnold@skeeve.com>

	* dfa.c: Move include of dfa.h around for correct building
	on Irix. Thanks to Nelson H.F. Beebe for the report.

	Unrelated:

	* .gitignore: Simplify .dSYM pattern for Mac OS X.

2014-03-21         Arnold D. Robbins     <arnold@skeeve.com>

	* dfa.c (using_simple_locale): Add ifdefs in case there is no
	locale support at all. Thanks to Scott Deifik for the report.

	Unrelated:

	* main.c (UPDATE_YEAR): Set to 2014.

2014-03-17         Arnold D. Robbins     <arnold@skeeve.com>

	* .gitignore: Add .dSYM directories for Mac OS X.
	Thanks to Hermann Peifer for the suggestion.

2014-03-10         Arnold D. Robbins     <arnold@skeeve.com>

	* dfa.h, dfa.c: Sync with grep. Yet again.
	* regex_internal.c (built_wcs_upper_buffer, build_upper_buffer):
	Fixes from GNULIB for mixed case matching on Mac OS X.

	Unrelated:

	* builtin.c (format_tree): Smarten handling of %' flag. Always
	pass it in for floating point formats. Then only add the
	thousands_sep if there is one. Also, allow for thousands_sep
	to be a string, not just one character.  Thanks to Michal Jaegermann
	for the report.

2014-03-08         Andrew J. Schorr     <aschorr@telemetry-investments.com>

	* gawkapi.c (api_impl): Add memory allocation function pointers.
	* gawkapi.h (GAWK_API_MINOR_VERSION): Bump.
	(gawk_api_t): Add memory allocation function pointers api_malloc,
	api_calloc, api_realloc, and api_free.
	(gawk_malloc, gawk_calloc, gawk_realloc, gawk_free): New macros.
[--snip--]
