path: root/ChangeLog

2012-06-21         Arnold D. Robbins     <arnold@skeeve.com>

	More API and cleanup:

	* awk.h (stopme): Make signature match other built-ins.
	* awkgram.y (stopme): Make signature match other built-ins.
	(regexp): Minor edit.
	* gawkapi.c (api_set_argument): Remove unused variable.
	Set parent_array field of array value.
	* TODO.xgawk: Update some.

	Remove extension() builtin.

	* awk.h (do_ext): Removed.
	(load_ext): Signature changed.
	* awkgram.y (tokentab): Remove do_ext.
	Change calls to do_ext.
	* ext.c (load_ext): Make init function a constant.
	* main.c (main): Change calls to do_ext.

2012-06-20         Arnold D. Robbins     <arnold@skeeve.com>

	Restore lost debugging function:

	* awkgram.y (stopme): Restore long lost debugging function.
	* awk.h (stopme): Add declaration.

	API work:

	* ext.c (get_argument): Make extern.
	* awk.h (get_argument): Declare it.
	* gawkapi.c (api_set_argument): Call it. Finish off the logic.
	(api_get_argument): Refine logic to use get_argument.
	* gawkapi.h (set_argument): New API.

2012-06-19         Arnold D. Robbins     <arnold@skeeve.com>

	Remove code duplication in gawkapi.c from msg.c:

	* awk.h (err): Add `isfatal' first parameter.
	* awkgram.y (err): Adjust all calls.
	* msg.c (err): Adjust all calls. Move fatal code to here ...
	(r_fatal): From here.
	* gawkapi.c: Remove code duplication and adjust calls to `err'.

	Handle deleting elements of flattened array:

	* awk.h (get_argument): Remove declaration.
	* ext.c (get_argument): Make static.
	* gawkapi.h (awk_flat_array_t): Make opaque fields const. Add
	more descriptive comments.
	* gawkapi.c (release_flattened_array): Delete elements flagged
	for deletion. Free the flattened array also.

	Add additional debugging when developing:

	* configure.ac: Add additional debugging flags.
	* configure: Regenerated.

2012-06-18         Arnold D. Robbins     <arnold@skeeve.com>

	* gawkapi.h (get_array_element): Restore `wanted' paramater.
	(awk_element_t): Use awk_value_t for index. Add awk_flat_array_t.
	(flatten_array): Change signature to use awk_flat_array_t;
	(release_flattened_array): Change signature to use awk_flat_array_t;
	* gawkapi.c (api_sym_update): Handle case where variable exists already.
	(api_get_array_element): Restore `wanted' paramater and pass it
	on to node_to_awk_value.
	(api_set_array_element): Revisse to match changed element type.
	(api_flatten_array): Revise signature, implement.
	(api_release_flattened_array): Revise signature, implement.

2012-06-17         Arnold D. Robbins     <arnold@skeeve.com>

	API Work:

	* gawkapi.h (get_array_element): Remove `wanted' parameter.
	(r_make_string): Comment the need for `api' and `ext_id' parameters.
	* gawkapi.c (api_sym_update): Move checks to front.
	Initial code for handling arrays. Still needs work.
	(api_get_array_element): Implemented.
	(api_set_array_element): Additional checking code.
	(api_del_array_element): Implemented.
	(api_create_array): Implemented.
	(init_ext_api): Force do_xxx values to be 1 or 0.
	(update_ext_api): Ditto.

2012-06-12         Arnold D. Robbins     <arnold@skeeve.com>

	API Work:

	* gawkapi.h (awk_value_t): Restore union.
	(get_curfunc_param): Renamed to get_argument. Return type changed
	to awk_bool_t. Semantics better thought out and documented.
	(awk_atexit, get_array_element): Return type now void.
	(sym_lookup): Return type now void. Argument order rationalized.
	* gawkapi.c (node_to_awk_value): Return type is now awk_bool_t.
	Semantics now match table in gawkawpi.h.
	(api_awk_atexit): Return type now void.
	(api_sym_lookup): Return type is now awk_bool_t. Change parameter
	order.
	(api_get_array_element): Return type is now awk_bool_t.

	Further API implementations and fixes for extension/testext.c:

	* awk.h (final_exit): Add declaration.
	* ext.c (load_ext): Change `func' to install_func.
	* gawkapi.c: Add casts to void for id param in all functions.
	(api_sym_update): Finish implementation.
	(api_get_array_element): Start implementation.
	(api_set_array_element): Add error checking.
	(api_get_element_count): Add error checking, return the right value.
	* main.c (main): Call final_exit instead of exit.
	(arg_assign): Ditto.
	* msg.c (final_exit): New routine to run the exit handlers and exit.
	(gawk_exit): Call it.
	* profile.c (dump_and_exit): Ditto.

2012-06-10         Andrew J. Schorr     <aschorr@telemetry-investments.com>

	* TODO.xgawk: Addition of time extension moved to "done" section.

2012-06-10         Andrew J. Schorr     <aschorr@telemetry-investments.com>

	* gawkapi.c (api_update_ERRNO_string): Treat boolean true as a request
	for TRANSLATE, and false as DONT_TRANSLATE.

2012-06-06         Arnold D. Robbins     <arnold@skeeve.com>

	* cint_array.c (tree_print, leaf_print): Add additional casts
	for printf warnings.

	* awk.h (update_ext_api): Add declaration.
	* gawkapi.c (update_ext_api): New function.
	* eval.c (set_LINT): Call update_ext_api() at the end.
	* gawkapi.h: Document that do_XXX could change on the fly.

	* awk.h (run_ext_exit_handlers): Add declaration.
	* msg.c (gawk_exit): Call it.

2012-06-05         Arnold D. Robbins     <arnold@skeeve.com>

	* ext.c (load_ext): Remove use of RTLD_GLOBAL. Not needed in new
	scheme. Clean up error messages.

2012-06-04         Arnold D. Robbins     <arnold@skeeve.com>

	* configure.ac: Remove use of -export-dynamic for GCC.
	* configure: Regenerated.

2012-05-30         Arnold D. Robbins     <arnold@skeeve.com>

	* main.c (is_off_limits_var): Minor coding style edit.
	* gawkapi.c (awk_value_to_node): More cleanup.
	(node_to_awk_value): Use `wanted' for decision making.
	(api_sym_update): Start implementation. Needs more work.
	General: More cleanup, comments.
	* gawkapi.h (api_sym_update): Add additional comments.

2012-05-29         Arnold D. Robbins     <arnold@skeeve.com>

	* gawkapi.c (node_to_awk_value): Add third parameter indicating type
	of value desired. Based on that, do force_string or force_number
	to get the "other" type.
	(awk_value_to_node): Clean up the code a bit.
	(get_curfunc_param): Move forcing of values into node_to_awk_value.
	(api_sym_lookup): Add third parameter indicating type of value wanted.
	(api_get_array_element): Ditto.
	* gawk_api.h: Additional comments and clarifications. Revise APIs
	to take third 'wanted' argument as above.
	(awk_value_t): No longer a union so that both values may be accessed.
	All macros: Parenthesized the bodies.
	* bootstrap.sh: Rationalize a bit.

2012-05-26         Andrew J. Schorr     <aschorr@telemetry-investments.com>

	* Makefile.am (include_HEADERS): Add so gawkapi.h will be installed.
	(base_sources): Add gawkapi.h so that it is in dist tarball.
	* TODO.xgawk: Update.
	* main.c (is_off_limits_var): Stop returning true for everything
	except PROCINFO.

2012-05-25         Arnold D. Robbins     <arnold@skeeve.com>

	* main.c (is_off_limits_var): New function to check if a variable
	is one that an extension function may not change.
	* awk.h (is_off_limits_var): Declare it.
	* gawkapi.c (api_sym_lookup): Use it.

	* bootstrap.sh: Touch various files in the extension directory also.

2012-05-24         Andrew J. Schorr     <aschorr@telemetry-investments.com>

	* gawkapi.h (awk_param_type_t): Remove (use awk_valtype_t instead).
	(awk_ext_func_t): Pass a result argument, and return an awk_value_t *.
	(gawk_api.get_curfunc_param): Add a result argument.
	(gawk_api.set_return_value): Remove obsolete function.
	(gawk_api.sym_lookup, gawk_api.get_array_element): Add a result
	argument.
	(gawk_api.api_make_string, gawk_api.api_make_number): Remove hooks,
	since access to gawk internal state is not required to do this.
	(set_return_value): Remove obsolete macro.
	(get_curfunc_param, sym_lookup, get_array_element): Add result argument.
	(r_make_string, make_number): New static inline functions.
	(make_string, dup_string): Revise macro definitions.
	(dl_load_func): Remove global_api_p and global_ext_id args,
	and fix SEGV by setting api prior to checking its version members.
	(GAWK): Expand ifdef to include more stuff.
	* gawkapi.c (node_to_awk_value): Add result argument.
	(api_get_curfunc_param): Add result argument, and use awk_valtype_t.
	(api_set_return_value): Remove obsolete function.
	(awk_value_to_node): New global function to convert back into internal
	format.
	(api_add_ext_func): Simply call make_builtin.
	(node_to_awk_value): Add result argument, and handle Node_val case.
	(api_sym_lookup, api_get_array_element): Add result argument.
	(api_set_array_element): Implement.
	(api_make_string, api_make_number): Remove functions that belong on
	client side.
	(api_impl): Remove 3 obsolete entries.
	* TODO.xgawk: Update to reflect progress.
	* Makefile.am (base_sources): Add gawkapi.c.
	* awk.h: Include gawkapi.h earlier.
	(api_impl, init_ext_api, awk_value_to_node): Add declarations
	so we can hook in new API.
	(INSTRUCTION): Add new union type efptr for external functions.
	(extfunc): New define for d.efptr.
	(load_ext): Remove 3rd obj argument that was never used for anything.
	(make_builtin): Change signature for new API.
	* awkgram.y (load_library): Change 2nd argument to load_ext
	from dlload to dl_load, and remove pointless 3rd argument.
	* main.c (main): Call init_ext_api() before loading shared libraries.
	Change 2nd argument to load_ext from dlload to dl_load, and remove
	pointless 3rd argument.
	* ext.c (do_ext): Remove pointless 3rd argument to load_ext.
	(load_ext): Remove 3rd argument.  Port to new API (change initialization
	function signature).  If initialization function fails, issue a warning
	and return -1, else return 0.
	(make_builtin): Port to new API.
	* interpret.h (r_interpret): For Op_ext_builtin, call external functions
	with an awk_value_t result buffer, and convert the returned value
	to a NODE *.  For Node_ext_func, code now in extfunc instead of builtin.

2012-05-21         Andrew J. Schorr     <aschorr@telemetry-investments.com>

	* configure.ac: Remove libtool, and call configure in the
	extension subdirectory.  Change pkgextensiondir to remove the
	version number, since the new API has builtin version checks.
	* TODO.xgawk: Update.
	* ltmain.sh: Removed, since libtool no longer used here.

2012-05-19         Andrew J. Schorr     <aschorr@telemetry-investments.com>

	* TODO.xgawk: Update to reflect progress and new issues.
	* main.c (main): Add -i (--include) option.
	(usage): Ditto.
	* awkgram.y (add_srcfile): Eliminate duplicates only for SRC_INC
	and SRC_EXTLIB sources (i.e. -f duplicates should not be removed).
	* io.c (find_source): Set DEFAULT_FILETYPE to ".awk" if not defined
	elsewhere.

2012-05-15         Arnold D. Robbins     <arnold@skeeve.com>

	* awk.h: Include "gawkapi.h" to get IOBUF.
	* gawkapi.h: Considerable updates.
	* gawkapi.c: New file. Start at implementing the APIs.

2012-05-13         Andrew J. Schorr     <aschorr@telemetry-investments.com>

	* TODO.xgawk: Update to reflect recent discussions and deletion of
	extension/xreadlink.[ch].

2012-05-11         Arnold D. Robbins     <arnold@skeeve.com>

	Sweeping change: Use `bool', `true', and `false' everywhere.

2012-04-09         Andrew J. Schorr     <aschorr@telemetry-investments.com>

	* eval.c (unset_ERRNO): Fix memory management bug -- need to use
	dupnode with Nnull_string.

2012-04-08         Andrew J. Schorr     <aschorr@telemetry-investments.com>

	* Makefile.am (valgrind): Define VALGRIND instead of redefining AWK.
	This allows test/Makefile.am to set up the command environment as
	desired.
	(valgrind-noleak): Ditto, plus set --leak-check=no instead of the
	default summary setting.

2012-04-07         Andrew J. Schorr     <aschorr@telemetry-investments.com>

	* TODO.xgawk: Update to reflect progress.

2012-04-01         Andrew J. Schorr     <aschorr@telemetry-investments.com>

	* TODO.xgawk: Move valgrind-noleak item into "done" section.
	* Makefile.am (valgrind-noleak): Add new valgrind rule that omits
	the "--leak-check=full" option to help spot more serious problems.

2012-04-01         Andrew J. Schorr     <aschorr@telemetry-investments.com>

	* TODO.xgawk: Move ERRNO item into "done" section.
	* awk.h (update_ERRNO, update_ERRNO_saved): Remove declarations.
	(update_ERRNO_int, enum errno_translate, update_ERRNO_string,
	unset_ERRNO): Add new declarations.
	* eval.c (update_ERRNO_saved): Renamed to update_ERRNO_int.
	(update_ERRNO_string, unset_ERRNO): New functions.
	* ext.c (do_ext): Use new update_ERRNO_string function.
	* io.c (ERRNO_node): Remove redundant extern declaration (in awk.h).
	(after_beginfile, nextfile): Replace update_ERRNO() with
	update_ERRNO_int(errno).
	(inrec): Replace update_ERRNO_saved with update_ERRNO_int.
	(do_close): Use new function update_ERRNO_string.
	(close_redir, do_getline_redir, do_getline): Replace update_ERRNO_saved
	with update_ERRNO_int.

2012-03-27         Andrew J. Schorr     <aschorr@telemetry-investments.com>

	* TODO.xgawk: Update to reflect debate about how to support Cygwin
	and other platforms that cannot link shared libraries with unresolved
	references.
	* awkgram.y (add_srcfile): Minor bug fix: reverse sense of test
	added by Arnold in last patch.
	* configure.ac: AC_DISABLE_STATIC must come before AC_PROG_LIBTOOL.

2012-03-26         Arnold D. Robbins     <arnold@skeeve.com>

	Some cleanups.

	* awkgram.y (add_srcfile): Use whole messages, better for
	translations.
	* io.c (init_awkpath): Small style tweak.
	* main.c (path_environ): Straighten out initial comment, fix
	compiler warning by making `val' const char *.

2012-03-25         Andrew J. Schorr     <aschorr@telemetry-investments.com>

	* configure.ac (AC_DISABLE_STATIC): Add this to avoid building useless
	static extension libraries.

2012-03-25         Andrew J. Schorr     <aschorr@telemetry-investments.com>

	* TODO.xgawk: New file listing completed and pending xgawk enhancements.

2012-03-24         Andrew J. Schorr     <aschorr@telemetry-investments.com>

	* io.c (path_info): Fix white space.
	(pi_awkpath, pi_awklibpath): Avoid structure initializers.
	(do_find_source): Eliminate pointless parentheses.
	(find_source): Leave a space after "&".
	* main.c (load_environ): Fix typo in comment.

2012-03-21         Andrew J. Schorr     <aschorr@telemetry-investments.com>

	* awkgram.y (LEX_LOAD): New token to support @load.
	(grammar): Add rules to support @load.
	(tokentab): Add "load".
	(add_srcfile): Improve error message to distinguish between source files
	and shared libraries.
	(load_library): New function to load libraries specified with @load.
	(yylex): Add support for LEX_LOAD (treated the same way as LEX_INCLUDE).

2012-03-20         Andrew J. Schorr     <aschorr@telemetry-investments.com>

	* Makefile.am (EXTRA_DIST): Remove extension.
	(SUBDIRS): Add extension so libraries will be built.
	(DEFS): Define DEFLIBPATH and SHLIBEXT so we can find shared libraries.
	* awk.h (deflibpath): New extern declaration.
	* configure.ac: Add support for building shared libraries by adding
	AC_PROG_LIBTOOL and AC_SUBST for acl_shlibext and pkgextensiondir.
	(AC_CONFIG_FILES): Add extension/Makefile.
	* io.c (pi_awkpath, pi_awklibpath): New static structures to contain
	path information.
	(awkpath, max_pathlen): Remove static variables now inside pi_awkpath.
	(init_awkpath): Operate on path_info structure to support both
	AWKPATH and AWKLIBPATH.  No need for max_path to be static, since
	this should be called only once for each environment variable.
	(do_find_source): Add a path_info arg to specify which path to search.
	Check the try_cwd parameter to decide whether to search the current
	directory (not desirable for AWKLIBPATH).
	(find_source): Choose appropriate path_info structure based on value
	of the is_extlib argument.  Set EXTLIB_SUFFIX using SHLIBEXT define
	instead of hardcoding ".so".
	* main.c (path_environ): New function to add AWKPATH or AWKLIBPATH
	to the ENVIRON array.
	(load_environ): Call path_environ for AWKPATH and AWKLIBPATH.

2012-05-09         Arnold D. Robbins     <arnold@skeeve.com>

	* configure.ac: Added AC_HEADER_STDBOOL
	* awk.h, dfa.c, regex.c: Reworked to use results
	of test and include missing_d/gawkbool.h.

2012-05-07         Arnold D. Robbins     <arnold@skeeve.com>

	* array.c (prnode): Add casts to void* for %p format.
	* debug.c (print_instruction): Ditto.
	* builtin.c: Fix %lf format to be %f everywhere.

	Unrelated:

	* replace.c: Don't include "config.h", awk.h gets it for us.

2012-05-04         Arnold D. Robbins     <arnold@skeeve.com>

	* getopt.c [DJGPP]: Change to __DJGPP__.
	* mbsupport.h [DJGPP]: Change to __DJGPP__.

	Unrelated:

	* awk.h: Workarounds for _TANDEM_SOURCE.

2012-05-01         Arnold D. Robbins     <arnold@skeeve.com>

	* dfa.c: Sync with GNU grep. RRI code now there, needed additional
	change for gawk.
	* configure.ac: Add check for stdbool.h.
	* regex.c: Add check for if not have stdbool.h, then define the
	bool stuff.

2012-04-27         Arnold D. Robbins     <arnold@skeeve.com>

	* dfa.c: Sync with GNU grep.
	* xalloc.h (xmemdup): Added, from grep, for dfa.c. Sigh.

2012-04-27         Arnold D. Robbins     <arnold@skeeve.com>

	Update to autoconf 2.69, automake 1.12.

	* INSTALL, aclocal.m4, configh.in, depcomp, install-sh, missing,
	mkinstalldirs, ylwrap: Updated.
	* configure.ac (AC_TYPE_LONG_LONG_INT, AC_TYPE_UNSIGNED_LONG_LONG_INT,
	AC_TYPE_INTMAX_T, AC_TYPE_UINTMAX_T): Renamed from gl_* versions.
	* configure: Regenerated.

2012-04-24         Arnold D. Robbins     <arnold@skeeve.com>

	* cmd.h (dPrompt, commands_Prompt, eval_Prompt, dgawk_Prompt): Changed
	to dbg_prompt, commands_prompt, eval_prompt, dgawk_prompt.
	* debug.c: Ditto.
	* command.y: Ditto.  Some minor whitespace and comments cleanup.

2012-04-24         Arnold D. Robbins     <arnold@skeeve.com>

	io.c cleanup and some speedup for RS as regexp parsing.

	* awk.h (Regexp): New members has_meta and maybe_long.
	(enum redirval): Add redirect_none as value 0.
	(remaybelong): Remove function declaration.
	* awkgram.y: Use redirect_none instead of 0 for no redirect cases.
	* io.c (go_getline_redir): Second arg now of type enum redirval.
	Changed intovar into into_variable.
	(comments and whitespace): Lots of general cleanup.
	(socket_open): readle changed to read_len.
	(two_way_open): Add additional calls to os_close_on_exec.
	(rsrescan): Simplify code a bit and use RS->maybe_long.
	* re.c (make_regexp): Set up new members in Regexp struct.
	(remaybelong): Remove function.
	(reisstring): Simplified code.

2012-04-16  Eli Zaretskii  <eliz@gnu.org>

	* io.c (read_with_timeout) [__MINGW32__]: Just call the blocking
	'read', as 'select' is only available for sockets.
	* mpfr.c (set_ROUNDMODE) [!HAVE_MPFR]: Renamed from set_RNDMODE.
	* main.c (load_procinfo): Declare name[] also when HAVE_MPFR is
	defined even though HAVE_GETGROUPS etc. are not.

2012-04-12         John Haque      <j.eh@mchsi.com>

	* array.c, awk.h, awkgram.y, builtin.c, command.y, debug.c,
	field.c, mpfr.c, profile.c: Change RND_MODE to ROUND_MODE.

2012-04-11         John Haque      <j.eh@mchsi.com>

	* main.c (varinit): Change RNDMODE to ROUNDMODE.

2012-04-11         Arnold D. Robbins     <arnold@skeeve.com>

	* main.c: Change --arbitrary-precision to --bignum.

2012-04-02         John Haque      <j.eh@mchsi.com>
	
	Add support for arbitrary-precision arithmetic.

	* mpfr.c: New file.
	* awk.h (struct exp_node): Add union to handle different number types.
	(MPFN, MPZN): New flag values.
	(DO_MPFR, do_mpfr): New defines.
	(PREC_node, RNDMODE_node): Add declarations.
	(PRECISION, RND_MODE, MNR, MFNR, mpzval, do_ieee_fmt): Add declarations.
	(make_number, str2number, format_val, cmp_numbers): Ditto.
	(force_number): Change definition.
	(Func_pre_exec, Func_post_exec): New typedefs.
	(POP_NUMBER, TOP_NUMBER): Change definitions.
	(get_number_ui, get_number_si, get_number_d, get_number_uj,
	iszero, IEEE_FMT, mpg_float, mpg_integer, mpg_float,
	mpg_integer): New defines.
	* awkgram.y (tokentab):	Add alternate function entries for MPFR/GMP.
	(snode): Choose the appropriate function.
	(negate_num): New function to negate a number.
	(grammar): Use it.
	(yylex): Adjust number handling code.
	* array.c (value_info, asort_actual, sort_user_func): Adjust for
	MPFR/GMP numbers.
	(do_adump, indent): Minor changes.
	(sort_up_index_number, sort_up_value_number, sort_up_value_type): Use
	cmp_numbers() for numeric comparisons.
	* builtin.c (mpz2mpfr): New function.
	(format_tree): Adjust to handle MPFR and GMP numbers.
	* eval.c (register_exec_hook): New function to manage interpreter hooks.
	(num_exec_hook, pre_execute, post_execute): New and adjusted definitions.
	(h_interpret): Renamed from debug_interpret.
	(init_interpret): Changed to use the new name.  
	(flags2str): New entries for MPFN and MPZN.
	(cmp_nodes): Reworked to use seperate routine for numeric comparisons.
	(set_IGNORECASE, set_BINMODE, set_LINT, update_NR, update_FNR,
	update_NF): Adjust code and some cleanup.
	* field.c (rebuild_record): Field copying code reworked to handle
	MPFR/GMP numbers.
	(set_NF): Minor adjustment.
	* io.c (INCREMENT_REC): New macro.
	(inrec, do_getline): Use the new macro.
	(nextfile, set_NR, set_FNR, get_read_timeout, pty_vs_pipe): Adjust code
	to handle MPFR/GMP numbers.
	* interpret.h (r_interpret): Adjust TOP_NUMBER/POP_NUMBER usage.
	(EXEC_HOOK): New macro and definition.
	(DEBUGGING): Removed.
	* main.c (DEFAULT_PREC, DEFAULT_RNDMODE): New defines.
	(opttab): New entry for option arbitrary-precision.
	(main): Handle the new option.
	(usage): Add to usage message.
	(varinit): Add PREC and RNDMODE.
	(load_procinfo): Install MPFR and GMP related items.
	(version): Append MPFR and GMP versions to message.
	* msg.c (err) : Adjust FNR handling with MPFR/GMP.
	* node.c (r_format_val): Renamed from format_val.
	(r_force_number): Return NODE * instead of AWKNUM.
	(make_number, str2number, format_val, cmp_numpers: Defined and initialized.
	(r_unref): Free MPFR/MPZ numbers.
	(get_numbase): Renamed from isnondecimal and return the base.
	(cmp_awknums): New function to compare two AWKNUMs.
	* command.y (yylex): Adjust number handling code.
	(grammar): Minor adjustments to handle negative numbers.
	* debug.c (init_debug): New function.
	(do_info, do_set_var, watchpoint_triggered, serialize,
	initialize_watch_item, do_watch, print_watch_item): Minor adjustments.
	(debug_pre_execute): Adjusted to handle MPFR and GMP numbers.

2012-04-09         Arnold D. Robbins     <arnold@skeeve.com>

	* INSTALL, config.guess, config.sub, depcomp, install-sh,
	missing, mkinstalldirs, ylwrap: Update to latest from automake 1.11.4.

2012-04-08         Arnold D. Robbins     <arnold@skeeve.com>

	* Update various files to automake 1.11.4.

2012-03-30         Arnold D. Robbins     <arnold@skeeve.com>

	* configure.ac (GAWK_AC_NORETURN): Do as macro instead of inline.

2012-03-29         Arnold D. Robbins     <arnold@skeeve.com>

	* dfa.h, dfa.c: Sync with grep. Major cleanups and some changes
	there.
	* re.c (research): Pass size_t* to dfaexec to match type change.
	* configure.ac (AH_VERBATIM[_Noreturn]): Added from Paul Eggert to
	ease compiling.
	(AC_INIT): Bump version.
	* configure, configh.in, version.c: Regenerated.

2012-03-28         Arnold D. Robbins     <arnold@skeeve.com>

	* 4.0.1: Release tar ball made.

2012-03-28         Arnold D. Robbins     <arnold@skeeve.com>

	* getopt.c: Add DJGPP to list of platforms where it's ok
	to include <stdlib.h>.
	* awkgram.y, builtin.c, ext.c, mbsupport.h, re.c: Update
	copyright year.

2012-03-21         Corinna Vinschen      <vinschen@redhat.com>

	* getopt.c: Add Cygwin to list of platforms where it's ok
	to include <stdlib.h>.

2012-03-20         Arnold D. Robbins     <arnold@skeeve.com>

	Get new getopt to work on Linux and C90 compilers:

	* getopt.c: Undef ELIDE_CODE for gawk.
	(_getopt_internal_r): Init first.needs_free to 0. In test for -W
	move executable code to after declarations for C90 compilers.
	* getopt1.c: Undef ELIDE_CODE for gawk.

	Minor bug fix with printf, thanks to John Haque:

	* builtin.c (format_tree): Initialize base to zero at the top
	of the while loop.

	Getting next tar ball ready:

	* configure.ac: Remove duplicate check for wcscoll. Thanks
	to Stepan Kasal.

2012-03-16         Arnold D. Robbins     <arnold@skeeve.com>

	* getopt.c, getopt.h, getopt1.c, getopt_int.h, regcomp.c,
	regex.c, regex.h, regex_internal.c, regex_internal.h,
	regexec.c: Sync with GLIBC, what the heck.

2012-03-14         Eli Zaretskii  <eliz@gnu.org>

	* mbsupport.h (btowc): Change for non-DJGPP.
	* re.c (dfaerror): Add call to exit for DJGPP.

2012-03-14         Arnold D. Robbins     <arnold@skeeve.com>

	* regex_internal.c (re_string_skip_chars): Fix calculation of
	remain_len with m.b. chars. Thanks to Stanislav Brabec
	<sbrabec@suse.cz>.

2012-02-28         Arnold D. Robbins     <arnold@skeeve.com>

	* main.c (init_groupset): Make `getgroups' failing a non-fatal
	error.  After all, what's the big deal?  Should help on Plan 9.

2012-02-27         Arnold D. Robbins     <arnold@skeeve.com>

	* dfa.c (parse_bracket_exp): Revert changes 2012-02-15 to stay
	in sync with grep.
	* dfa.h (dfarerror): Add __attribute__ from grep.

2012-02-15         Arnold D. Robbins     <arnold@skeeve.com>

	Fix warnings from GCC 4.6.2 -Wall option.

	* awkgram.y (newline_eof): New function to replace body of
	NEWLINE_EOF macro.
	(yylex): Replace body of NEWLINE_EOF macro.
	* dfa.c (parse_bracket_exp): Init variables to zero.
	* ext.c (dummy, junk): Remove.
	* regex_internal.c (re_string_reconstruct): Remove buf array. It was
	set but not used.

2012-02-10         Arnold D. Robbins     <arnold@skeeve.com>

	* dfa.c: Sync with GNU grep.

2012-02-07         Arnold D. Robbins     <arnold@skeeve.com>

	* main.c (main): Move init of `output_fp' to before parsing of
	program so that error messages from msg.c don't dump core.
	Thanks to Michael Haardt <michael@moria.de>.

2012-01-13         Arnold D. Robbins     <arnold@skeeve.com>

	* dfa.c [is_valid_unibtye_character]: Fix from GNU grep to 
	bug reported by me from Scott Deifik for DJGPP.

2012-01-03         Arnold D. Robbins     <arnold@skeeve.com>

	* dfa.c: Sync with GNU grep.

2012-01-02         Arnold D. Robbins     <arnold@skeeve.com>

	* io.c (Read_can_timeout, Read_timeout, Read_default_timeout):
	Renamed to use lower case.
	Other minor stylistic edits.

2012-01-01         John Haque      <j.eh@mchsi.com>

	* awk.h (struct iobuf): New entry read_func.
	* io.c (Read_can_timeout, Read_timeout, Read_default_timeout):
	New variables.
	(init_io): New routine to initialize the variables.
	(in_PROCINFO): New "clever" routine to parse elements with indices
	seperated by a SUPSEP.
	(get_read_timeout): New routine to read timeout value for an IOBUF.
	(read_with_timeout): New routine to read from a fd with a timeout.
	(pty_vs_pipe): Use in_PROCINFO().
	(get_a_record): Set the timeout value and the read routine as necessary.
	* main.c (main): Call init_io().

2011-12-31         Arnold D. Robbins     <arnold@skeeve.com>

	* profile_p.c: Remove the file.
	* msg.c (err): Remove check for name being dgawk.

2011-12-31         Arnold D. Robbins     <arnold@skeeve.com>

	* awk.h [STREQ, STREQN]: Remove macros.
	* awkgram.y, builtin.c, command.y, debug.c, eval.c,
	io.c, msg.c: Change all uses to call strcmp, strncmp.

2011-12-28         Arnold D. Robbins     <arnold@skeeve.com>

	* int_array.c, str_array.c: Fix some compiler warnings 32/64
	bit system differences.

2011-12-26         John Haque      <j.eh@mchsi.com>

	Merge gawk, pgawk and dgawk into a single executable gawk.

	* awk.h (DO_PRETTY_PRINT, DO_PROFILE, DO_DEBUG,
	do_pretty_print, do_debug): New defines.
	(interpret): New variable, a pointer to an interpreter routine.
	(enum exe_mode): Nuked.
	* main.c (opttab): New options --pretty-print and --debug;
	Remove option --command.
	(usage): Update usage messages.
	* interpret.h: New file.
	* eval.c (r_interpret): Move to the new file.
	(debug_interpret): New interpreter routine when debugging.
	(init_interpret): New routine to initialize interpreter related
	variables.
	* eval_d.c, eval_p.c: Delete files.
	* debug.c (interpret): Renamed to debug_prog.
	(DEFAULT_PROMPT, DEFAULT_HISTFILE, DEFAULT_OPTFILE): Remove prefix 'd'.
	* profile.c (init_profiling): Nuked.
	* Makefile.am: Adjusted.

	Add command line option --load for loading extensions.

	* awk.h (srctype): Add new source type SRC_EXTLIB.
	* ext.c(load_ext): New routine to load extension.
	(do_ext): Adjust to use load_ext().
	* main.c (opttab): Add new option --load.
	(main): Call load_ext() to load extensions.
	(usage): Add usage message for the new option.
	* io.c (get_cwd): New routine.
	(do_find_source): Use the new routine.
	(find_source): Handle new type SRC_EXTLIB.
	* awkgram.y (parse_program, next_sourcefile): Skip type SRC_EXTLIB.
	(add_srcfile): Adjust call to find_source.
	* debug.c (source_find): Same.

	Unrelated:

	* ext.c (get_argument): Fixed argument parsing.
	* array.c (null_array_func): Reworked array routines for an empty array.
	* str_array.c, int_array.c: Make GCC happy, use %u instead of %lu
	printf formats.
	* eval.c (node_Boolean): New array for TRUE and FALSE nodes.
	(init_interpret): Create the new nodes.
	(eval_condition): Add test for the new nodes.
	(setup_frame): Disable tail-recursion optimization when profiling.
	* interpret.h (r_interpret): Use the boolean nodes instead of making
	new ones when needed.

2011-12-26         Arnold D. Robbins     <arnold@skeeve.com>

	Finish Rational Range Interpretation (!)

	* dfa.c (match_mb_charset): Compare wide characters directly
	instead of using wcscoll().
	* regexec.c (check_node_accept_byte): Ditto.

	Thanks to Paolo Bonzini for pointing these out.

2011-12-06         John Haque      <j.eh@mchsi.com>

	* debug.c (source_find): Fix misplaced call to efree.
	* profile.c (redir2str): Add a missing comma in the redirtab array.
	* eval.c (r_interpret): Disallow call to exit if currule is undefined.
	This avoids the possiblity of running END blocks more than once when
	used in a user-defined sorted-in comparision function.
	* array.c (sort_user_func): Adjust appropriately.

2011-12-06         Arnold D. Robbins     <arnold@skeeve.com>

	* awk.h, mbsupport.h: Changes for MBS support on DJGPP
	and z/OS.
	* io.c: Disable pty support on z/OS.

2011-11-27         Arnold D. Robbins     <arnold@skeeve.com>

	* dfa.c: Sync with GNU grep.
	* dfa.h: Add _GL_ATTRIBUTE_PURE macro. Bleah.

2011-11-14         John Haque      <j.eh@mchsi.com>

	* debug.c (set_breakpoint_at): Fix problem with setting
	breakpoints in a switch statement. Thanks to Giorgio Palandri
	<giorgio.palandri@gmail.com> for the bug report.

2011-11-14         Arnold D. Robbins     <arnold@skeeve.com>

	* mbsupport.h: Add check for HAVE_BTOWC, per Pat Rankin.

2011-11-12         Eli Zaretskii  <eliz@gnu.org>

	* mbsupport.h: Additional glop for dfa.c in Windows environment.

2011-11-01         Arnold D. Robbins     <arnold@skeeve.com>

	* dfa.c: Move glop for ! MBS_SUPPORT to ...
	* mbsupport.h: ... here.
	* replace.c: Include missing_d/wcmisc.c if ! MBS_SUPPORT.
	* regex_internal.h: Move include of mbsupport.h up and add
	additional checks to avoid inclusion of wctype.h and wchar.h.

2011-10-27         Arnold D. Robbins     <arnold@skeeve.com>

	* builtin.c (do_strftime): Per Pat Rankin, instead of casting
	fclock, use a long variable and check for negative or overflow.

2011-10-25         Arnold D. Robbins     <arnold@skeeve.com>

	Merge with gawk_performance branch done. Additionally:

	* cint_array.c, int_array.c, str_array.c: Fix compiler complaints
	about printf formats (signed / unsigned vs. %d / %u).
	* eval.c (setup_frame): Add a missing return value.

2011-10-25         Arnold D. Robbins     <arnold@skeeve.com>

	* Makefile.am (dist-hook): Use `cd $(srcdir)/pc' so that
	`make distcheck' works completely.
	* builtin.c (do_strftime): Add cast to long int in check
	for fclock < 0 for systems where time_t is unsigned (e.g., VMS).

2011-10-25  Stefano Lattarini  <stefano.lattarini@gmail.com>

	dist: generated file `version.c' is not removed by "make distclean"

	* Makefile.am (distcleancheck_listfiles): Define to ignore the
	generated `version.c' file.

2011-10-24         Arnold D. Robbins     <arnold@skeeve.com>

	* dfa.c (wcscoll): Create for VMS.
	* Makefile.am (dist-hook): Run sed scripts to make pc/config.h.

2011-10-24  Eli Zaretskii  <eliz@gnu.org>

	* builtin.c [HAVE_POPEN_H]: Include "popen.h".
	* README.git: Update for pc/ systems.

2011-10-21         Arnold D. Robbins     <arnold@skeeve.com>

	* Makefile.am (distcleancheck_listfiles): Added, per advice from
	Stefano Lattarini <stefano.lattarini@gmail.com>.
	* dfa.c: Additional faking of mbsupport for systems without it;
	mainly VMS.

2011-10-21  Stefano Lattarini  <stefano.lattarini@gmail.com>

	* configure.ac (AM_C_PROTOTYPES): Remove call to this macro.
	The comments in configure.ac said that the call to AM_C_PROTOTYPES
	was needed for dfa.h, synced from GNU grep; but this statement is
	not true anymore in grep since commit v2.5.4-24-g9b5e7d4 "replace
	AC_CHECK_* with gnulib modules", dating back to 2009-11-26.  Also,
	the support for automatic de-ANSI-fication has been deprecated in
	automake 1.11.2, and will be removed altogether in automake 1.12.
	* vms/vms-conf.h (PROTOTYPES, __PROTOTYPES): Remove these #define,
	they are not used anymore.
	* pc/config.h (PROTOTYPES): Likewise.

2011-10-18         Dave Pitts            <dpitts@cozx.com>

	* dfa.c: Move some decls to the top of their functions for
	C90 compilers.

2011-10-18         Arnold D. Robbins     <arnold@skeeve.com>

	* builtin.c (do_strftime): Add check for negative / overflowed
	time_t value with fatal error. Thanks to Hermann Peifer
	<peifer@gmx.eu> for the bug report.
	* dfa.c (setbit_wc): Non-MBS version. Add a return false
	since VMS compiler doesn't understand that abort doesn't return.

2011-10-10         Arnold D. Robbins     <arnold@skeeve.com>

	* builtin.c (do_sub): Init textlen to zero to avoid "may be
	used unitialized" warning. Thanks to Corinna Vinschen for
	pointing this out.
	* eval.c (unwind_stack): Add parentheses around condition in while
	to avoid overzealous warning from GCC.

2011-09-30  Eli Zaretskii  <eliz@gnu.org>

	* io.c (remap_std_file): Fix non-portable code that caused
	redirected "print" to fail if a previous read from standard input
	returned EOF.  Reported by David Millis <tvtronix@yahoo.com>.
	(remap_std_file): Per Eli's suggestion, removed the leading close
	of oldfd and will let dup2 do the close for us.

2011-10-11         John Haque     <j.eh@mchsi.com>

	* symbol.c: Add licence notice.
	* array.c (PREC_NUM, PREC_STR): Define as macros.

2011-10-09         Arnold D. Robbins     <arnold@skeeve.com>

	* dfa.c: Sync with GNU grep.

2011-10-07         John Haque     <j.eh@mchsi.com>

	Tail recursion optimization.
	* awkgram.y (grammar, mk_function): Recognize tail-recursive
	calls.
	* awk.h (tail_call, num_tail_calls): New defines.
	* eval.c (setup_frame): Reuse function call stack for
	tail-recursive calls.
	(dump_fcall_stack): Reworked.

2011-10-04         Arnold D. Robbins     <arnold@skeeve.com>

	* awk.h, main.c (gawk_mb_cur_max): Make it a constant 1 when
	MBS_SUPPORT isn't available to allow GCC dead code constant
	expression computation and dead code elimination to help out.

2011-10-02         Arnold D. Robbins     <arnold@skeeve.com>

	* io.c (rsnullscan, get_a_record): Fix the cases where terminators
	are incomplete when RS == "". Also fix the case where the new value
	is shorter than the old one.  Based on patch from Rogier
	<rogier777@gmail.com> as submitted by Jeroen Schot
	<schot@A-Eskwadraat.nl>.

2011-09-24         Arnold D. Robbins     <arnold@skeeve.com>

	* eval.c, io.c, re.c: Fix some spelling errors. Thanks to
	Jeroen Schot <schot@A-Eskwadraat.nl>.

2011-09-21         Arnold D. Robbins     <arnold@skeeve.com>

	* dfa.c, mbsupport.h: Sync with GNU grep. Large amount of changes
	that remove many ifdefs, moving many conditions for multibyte
	support into regular C code and relying GCC's dead code optimization
	to elimnate code that won't be needed.
	* dfa.c: For gawk, add a number of additional defines so that things
	will compile if MBS_SUPPORT is 0.
	* array.c, awk.h, awkgram.y, builtin.c, eval.c, field.c, main.c,
	node.c, re.c: Change `#ifdef MBS_SUPPORT' to `#if MBS_SUPPORT'.
	* awk.h, regex_internal.h: Move NO_MBSUPPORT handling to ...
	* mbsupport.h: ...here.

2011-09-16         Arnold D. Robbins     <arnold@skeeve.com>

	* dfa.c: Sync with GNU grep.

2011-09-08         John Haque     <j.eh@mchsi.com>

	Optimization for compound assignment, increment and
	decrement operators; Avoid unref and make_number calls
	when there is no extra references to the value NODE.

2011-09-03         Arnold D. Robbins     <arnold@skeeve.com>

	* dfa.c: Sync with GNU grep.

2011-08-31         John Haque     <j.eh@mchsi.com>

	Grammar related changes: Simplify grammar for user-defined
	functions and general cleanups.

	* symbol.c: New file.
	* awkgram.y: Move symbol table related routines to the
	new file.
	(rule, func_name, function_prologue, param_list): Reworked.
	(install_function, check_params): Do all error checkings
	for the function name and parameters before installing in
	the symbol table.
	(mk_function): Finalize function definition.
	(func_install, append_param, dup_params): Nuked.
	* symbol.c (make_params): allocate function parameter nodes
	for the symbol table. Use the hash node as Node_param_list;
	Saves a NODE for each parameter.
	(install_params): Install function parameters into the symbol
	table.
	(remove_params): Remove parameters out of the symbol table.
	* awk.h (parmlist, FUNC): Nuked.
	(fparms): New define.


	Dynamically loaded function parameters are now handled like
	those for a builtin.

	* awk.h (Node_ext_func, Op_ext_builtin): New types.
	(Op_ext_func): Nuked.
	* ext.c (make_builtin): Simplified.
	(get_curfunc_arg_count): Nuked; Use the argument 'nargs' of
	the extension function instead.
	(get_argument, get_actual_argument): Adjust.
	* eval.c (r_interpret): Update case Op_func_call for a dynamic
	extension function. Handle the new opcode Op_ext_builtin.
	* pprint (profile.c): Adjust.


	Use a single variable to process gawk options.

	* awk.h (do_flags): New variable.
	(DO_LINT_INVALID, DO_LINT_ALL, DO_LINT_OLD, DO_TRADITIONAL,
	DO_POSIX, DO_INTL, DO_NON_DEC_DATA, DO_INTERVALS,
	DO_PROFILING, DO_DUMP_VARS, DO_TIDY_MEM,
	DO_SANDBOX): New defines.
	(do_traditional, do_posix, do_intervals, do_intl,
	do_non_decimal_data, do_profiling, do_dump_vars,
	do_tidy_mem, do_sandbox, do_lint,
	do_lint_old): Defined as macros.	
	* main.c: Remove definitions of the do_XX variables. Add
	do_flags definition.
	* debug.c (execute_code, do_eval, parse_condition): Save
	do_flags before executing/parsing and restore afterwards.


	Nuke PERM flag. Always increment/decrement the reference
	count for a Node_val. Simplifies macros and avoids
	occassional memory leaks, specially in the debugger.

	* awk.h (UPREF, DEREF, dupnode, unref): Simplified.
	(mk_number): Nuked.
	* (*.c): Increment the reference count of Nnull_string before
	assigning as a value.


	Revamped array handling mechanism for more speed and
	less memory consumption.

	* awk.h (union bucket_item, BUCKET): New definitions. Used as
	bucket elements for the hash table implementations of arrays;
	40% space saving in 32 bit x86.
	(buckets, nodes, array_funcs, array_base, array_capacity,
	xarray, alookup, aexists, aclear, aremove, alist,
	acopy, adump, NUM_AFUNCS): New defines.
	(array_empty): New macro to test for an empty array.
	(assoc_lookup, in_array): Defined as macros.
	(enum assoc_list_flags): New declaration.
	(Node_ahash, NUMIND): Nuked.
	* eval.c (r_interpret): Adjust cases Op_subscript,
	Op_subscript_lhs, Op_store_var and Op_arrayfor_incr.
	* node.c (dupnode, unref): Removed code related to Node_ahash. 
	* str_array.c: New file to handle array with string indices.
	* int_array.c: New file to handle array with integer indices.
	* cint_array.c: New file. Special handling of arrays with
	(mostly) consecutive integer indices.


	Memory pool management reworked to handle NODE and BUCKET.

	* awk.h (struct block_item, BLOCK, block_id): New definitions.
	(getblock, freeblock): New macros.
	(getbucket, freebucket): New macros to allocate and deallocate
	a BUCKET.
	(getnode, freenode): Adjusted.
	* node.c (more_nodes): Nuked.
	(more_blocks): New routine to allocate blocks of memory.

2011-08-24         Arnold D. Robbins     <arnold@skeeve.com>

	Fix pty co-process communication on Ubuntu GNU/Linux.

	* io.c: Add include of <sys/ioctl.h> to get definition of TIOCSCTTY.
	(two_way_open): Move call for this ioctl to after setsid() call.

2011-08-23         Arnold D. Robbins     <arnold@skeeve.com>

	* regex_internal.c (re_string_fetch_byte_case ): Remove
	__attribute((pure)) since it causes failures with gcc -O2
	-fno-inline. Thanks to Neil Cahill <ncahill_alt@yahoo.com>
	for reporting the bug.

2011-08-10         John Haque      <j.eh@mchsi.com>

	BEGINFILE/ENDFILE related code redone.

	* awk.h (prev_frame_size, has_endfile, target_get_record,
	target_newfile): New defines.
	* awkgram.y (mk_program): Initialize has_endfile appropriately for
	Op_get_record.
	(parse_program): Initialize new jump targets for
	Op_get_record and Op_newfile.
	* eval.c (unwind_stack): Change argument to number of
	items to be left in the stack. Adjust code.
	(pop_fcall, pop_stack): New defines.
	(setup_frame): Initialize prev_frame_size.
	(exec_state, EXEC_STATE): New structure and typedef.
	(exec_state_stack): New variable.
	(push_exec_state, pop_exec_state): New functions to save and
	later retrieve an execution state.
	(r_interpret): Use the new functions and the defines in
	cases Op_K_getline, Op_after_beginfile, Op_after_endfile,
	Op_newfile and Op_K_exit.
	* io.c (after_beginfile): When skipping a file using nextfile,
	return zero in case there was an error opening the file. 
	(has_endfile): Nuke global variable.
	(inrec): Add a second argument to pass errno to the calling
	routine.
	* debug.c (print_instruction): Update cases.

2011-08-10         Arnold D. Robbins     <arnold@skeeve.com>

	Fix (apparently long-standing) problem with FIELDWIDTHS.
	Thanks to Johannes Meixner <jsmeix@suse.de>.

	* field.c (set_FIELDWIDTHS): Adjust calculations.

	Fix problem with FPAT, reported by "T. X. G." <leopardie333@yahoo.com>

	* awk.h (Regexp): Add new member 'non_empty'.
	* field.c (fpat_parse_field): Save/restore local variable non_empty
	from member in Regexp struct.

2011-08-09         Arnold D. Robbins     <arnold@skeeve.com>

	Fix pty issue reported by "T. X. G." <leopardie333@yahoo.com>

	* configure.ac: Check for setsid.
	* awk.h: If not HAVE_SETSID define it as an empty macro.
	* io.c (two_way_open): Call setsid if using pty's.

2011-07-29  Eli Zaretskii  <eliz@gnu.org>

	* builtin.c (format_tree): Rename small -> small_flag,
	big -> big_flag, bigbig -> bigbig_flag.  Solves compilation errors
	when building Gawk with libsigsegv on MS-Windows, see
	https://lists.gnu.org/archive/html/bug-gawk/2011-07/msg00029.html.

2011-07-28         Arnold D. Robbins     <arnold@skeeve.com>

	* builtin.c (do_sub): Revert to gawk 3.1 behavior for backslash
	handling. It was stupid to think I could break compatibility.
	Thanks to John Ellson <ellson@research.att.com> for raising
	the issue.

2011-07-26         John Haque      <j.eh@mchsi.com>

	* eval.c (r_interpret): In cases Op_var_assign and Op_field_assign,
	include Op_K_getline_redir in the test for skipping the routine.

2011-07-26         John Haque      <j.eh@mchsi.com>

	Fix handling of assign routines for 'getline var'.
	Rework the previous fix for (g)sub.

	* awk.h: New define assign_ctxt for use in Op_var_assign
	and Op_field_assign opcodes. Remove define AFTER_ASSIGN.
	* awkgram.y (snode, mk_getline): Initialize assign_ctxt.
	* builtin.c (do_sub): Adjust to take only the first two
	arguments.
	* eval.c (r_interpret): In cases Op_var_assign and Op_field_assign,
	skip the routine as appropriate. Adjust case Op_sub_builtin.
	* main.c (get_spec_varname): New function.
	* debug.c (print_instruction): Use the new function to get
	special variable name.

2011-07-17         Arnold D. Robbins     <arnold@skeeve.com>

	* main.c (varinit): Mark FPAT as NON_STANDARD. Thanks to
	Wolfgang Seeberg <wolfgang.seeberg@yahoo.com> for the report.
	* Makefile.am (EXTRA_DIST): Add po/README, per advice from
	Bruno Haible.
	* dfa.c: Sync with GNU grep.
	* xalloc.h (xzalloc): New function, from GNU grep, for dfa.c.
	* README: Note that bug list is really a real mailing list.

2011-07-16         Arnold D. Robbins     <arnold@skeeve.com>

	* Makefile.am (AUTOMAKE_OPTIONS): Removed.
	* configure.ac (AM_INIT_AUTOMAKE): Removed dist-bzip2 option, on
	advice from Karl Berry.

2011-07-15         John Haque      <j.eh@mchsi.com>

	* awk.h (Op_sub_builtin): New opcode.
	(GSUB, GENSUB, AFTER_ASSIGN, LITERAL): New flags for 
	Op_sub_builtin.
	* awkgram.y (struct tokentab): Change opcode to	Op_sub_builtin
	for sub, gsub and gensub.
	(snode): Update processing of sub, gsub and gensub.
	* builtin.c (do_sub, do_gsub, do_gensub): Nuke.
	(sub_common): Renamed to do_sub. Relocate gensub argument
	handling code from do_gensub to here; Simplify the code a
	little bit. 
	* eval.c (r_interpret): Handle Op_sub_builtin. Avoid field
	re-splitting or $0 rebuilding if (g)sub target string is
	a field and no substitutions were done.
	* pprint (profile.c): Add case for the new opcode.
	* print_instruction (debug.c): Ditto.

2011-07-15         Arnold D. Robbins     <arnold@skeeve.com>

	* awk.h: Typo fix: "loner" --> longer. Thanks to Nelson Beebe.
	* builtin.c (efwrite): Fix flushing test back to what it was 
	in 3.1.8. Thanks to Strefil <strefil@yandex.ru> for the problem
	report.
	* configure.ac: Bump version to 4.0.0a for stable branch.

2011-06-24         Arnold D. Robbins     <arnold@skeeve.com>

	* Makefile.am (EXTRA_DIST): Add ChangeLog.0.
	* 4.0.0: Remake the tar ball.

2011-06-23         Arnold D. Robbins     <arnold@skeeve.com>

	* configure.ac: Update version to 4.0.0.
	* configure: Regenerated.
	* ChangeLog.0: Rotated ChangeLog into this file.
	* ChangeLog: Created anew for gawk 4.0.0 and on.
	* README: Bump version to 4.0.0.
	* 4.0.0: Release tar ball made.