%% /u/sy/beebe/tex/bibsort/bibsort-0.14/CHANGELOG, Sat Oct  9 09:00:29 1999
%% Edit by Nelson H. F. Beebe <beebe@math.utah.edu>
%% /u/sy/beebe/tex/bibsort/CHANGELOG, Mon Nov 24 14:25:15 1997
%% Edit by Nelson H. F. Beebe <beebe@plot79.math.utah.edu>
%% /u/sy/beebe/tex/bibsort/CHANGELOG, Fri Nov  8 18:06:37 1996
%% Edit by Nelson H. F. Beebe <beebe@plot79.math.utah.edu>
%% /u/sy/beebe/tex/bibsort/CHANGELOG, Mon Sep 16 19:03:18 1996
%% Edit by Nelson H. F. Beebe <beebe@plot79.math.utah.edu>
%% /u/sy/beebe/tex/bibsort/CHANGELOG, Sat Oct 29 09:05:24 1994
%% Edit by Nelson H. F. Beebe <beebe@sunrise>

[08-Oct-1999]	0.14
		Add support for -? and -help options.

		Add -bypages option.

		In bibsort.man:

			Document the new options added at versions
			0.13 and 0.14, and note that their use (except
			-bypages) prevents file processing.

			Document the behavior when multiple -byxxx
			options are specified: the last one overrides
			all earlier ones.

			Document a significant change in the sort
			order in the presence of non-numeric values
			previously, except for the day value, values
			beginning with a nondigit would sort as zero.
			Now they sort as infinity (i.e., largest
			signed 32-bit integer).

			Update the PROGRAMMING NOTES section to
			document the larger code size.

			Add additional entries to the SEE ALSO
			section.

			Add many new entries to the search engine URL
			list.

			Add GNU Emacs file-specific customization
			comment section at end.

		In bibsort.sh:

			Document and implement the new -?, -bypages, and
			-help options.  The new function pages_key()
			creates a sort key for the -bypages option.

			Document and implement the changed sort order
			of nonnumeric values.  The new functions
			numeric_value() and year_value() implement
			this.

			Change indentation of final command pipeline
			for better readability.

		In Makefile.in, add MAN2HTMLFLAGS so as to produce
		a .html file that passes html-check and html-ncheck.


[24-Sep-1999]	0.13
		Update to use GNU autoconfigure, in particular,
		allowing a choice of a faster awk implementation.

		Add support for GNU/POSIX style --options.

		Add support for -author, -copyright, and -version
		options [but forgot to document them in the manual
		pages].

		Replace brace_count() with a much more efficient
		version, giving up to a 25x speedup (when combined
		with a faster awk implementation).  Details can be
		found in the EFFICIENCY ISSUES section of the README
		file.


[24-Nov-1997]	0.12
		Add code to support the new -byseriesvolume option
		in bibsort.sh, and document it in bibsort.man.

		Add AVAILABILITY section of bibsort.man.

		Change MAN2HTML setting in Makefile to reflect
		installed location, rather than a private version.


[08-Nov-1996]	0.11
		Add code to replace visible newlines in the sort key
		with spaces, thereby eliminating spurious lines with
		embedded Ctl-K characters that could be left between
		BibTeX entries in the output from a multiline sort key.

		Rename all global variables (found by new profiling
		version of awk) to have initial capitals for each
		underscore-separated word, so that variables beginning
		with lowercase letters are known to be strictly local
		variables.

		Replace undefined global variable `unknown' with correct
		value `Unknown_Value'.  Although the test that used the
		undefined variable was wrong, I am not aware of any
		sorting failure caused by it.

		Add Warning_OK flag and use it to suppress warnings
		about missing journal/year/volume/number data for
		-byyear sorting.

		Change warning() output from /dev/tty to /dev/stderr,
		since the former cannot be trapped in a redirected file,
		and prevents background and batch use of bibsort.
		Although /dev/stderr is not available in all awk
		implementations, gawk, and recent AT&T awk, both have
		it, and bibsort.sh defaults to gawk anyway.

		Add dummy configure script and Makefile target check
		to supply GNUware-style simple installation.

[16-Sep-1996]	0.10
		Modify print_item() to add a secondary sort key made
		from the volume number, so that identical labels in a
		periodical bibliography (e.g. from a regular column)
		sort in publication order.

[17-Jan-1996]	0.09
		Add support and documentation for -byday switch.

[29-Oct-1994]	0.08
		Change sort key for -byvolume sorting to include
		year, so that entries that are missing volume numbers
		but have a year will be sorted with other entries from
		the same year.

		In function value(), change two patterns so that empty
		values of the form "" and {} are recognized properly.
		The old patterns incorrectly expected at least one
		character between the delimiters, which in the case of
		empty strings caused the next line to be included in
		the value string.  This in turn resulted in generation
		of a sort key with a line break, and after removal of
		the sort key, a partial sort key was left in the
		output stream.

[25-Sep-1994]	0.07
		Change sort key for -byvolume sorting to include
		beginning and ending page numbers as separate key
		fields, so that two entries with pages 31--31 and
		31--32 are correctly sorted.  Such instances actually
		occur in the journal Computing Surveys, where two or
		more letters to the editor can start on the same page.

[21-Sep-1994]	0.06
		In function squeeze(), multiple blanks preceding an
		open brace inside value strings were incorrectly
		eliminated.  Rewrite squeeze() to be more careful.

		In function collect_braced_item(), add check for
		meeting an apparent new entry before brace balance is
		achieved, and exit with an error code if this happens.

[??-???-1994]	0.05
		Changes not recorded.

[20-Jul-1994]	0.04
		Add support for recognition of booktitle, so that
		cross-referenced books can be sorted into the
		@Proceedings{...}  section as well.

[15-Jul-1994]	0.03
		Extend -byyear sorting to extract year from citation
		key of the form Jones:1992:ABC (BibNet Project style).

[09-Jun-1994]	0.02
		Add substantial additional commentary, and add support
		for sorting @Proceedings{...} entries in a separate
		section at the end, to conform to BibTeX's
		cross-referencing order requirements.

[17-May-1994]	0.01
		Add support for -byyear switch.

[13-Oct-1992]	0.00
		Initial working version.
