2019-12-12  Karl Berry  <karl@freefriends.org>

	* configure.ac: look for a pthread library cntaining
	pthread_create (using KPSE_SEARCH_LIBS) and set PTHREAD_LIB if found.
	* Makefile.am (LDADD): include $(PTHREAD_LIB).
	
As of ICU 65.1, upmendex requires -lpthread. Otherwise, it crashes
at sort.c:82, which merely creates the icu_collator:
    icu_collator = ucol_open(icu_locale, &status);

About 10 stack frames deep into the ICU initialization, this winds up calling
(Build/source/libs/icu/icu-src/source/common/umutex.cpp:146):
    std::call_once(*pInitFlag, umtx_init);

which results in a fatal error from stdc++:
    terminate called after throwing an instance of 'std::system_error'
      what():  Unknown error -1

Web searching indicated that that opaque error message is a result of not
linking with -lpthread. So now we do so. So far our other ICU programs
(bibtexu, xetex) don't seem to require it.

2019-03-16  TANAKA Takuji  <ttk@t-lab.opal.ne.jp>

	* upmendex.ja.txt: Rename from upmendex.doc,
	  minor update.

2019-03-06  Hironobu Yamashita  <h.y.acetaminophen@gmail.com>

	Fix a bug in multibytelen().

2019-02-17  TANAKA Takuji  <ttk@t-lab.opal.ne.jp>

	* version 0.52  Beta version.
	* main.c, COPYRIGHT: Update copyright year.
	* fread.c: Fix typo. It seems a bug.
	* {convert,fread,fwrite,kp,sort,styfile}.c, {hanzi,mendex}.h:
	Avoid compiler warnings.
	Thanks to @ngothan for a report by covscan.
	https://github.com/TeX-Live/texlive-source/issues/11

2017-04-05  TANAKA Takuji  <ttk@t-lab.opal.ne.jp>

	* main.c: Avoid access violation.
	Thanks to I. Wada san.
	* main.c, COPYRIGHT: Update copyright year.

2016-12-24  TANAKA Takuji  <ttk@t-lab.opal.ne.jp>

	* sort.c: Add Cyrillic Extended-C

2016-11-12  TANAKA Takuji  <ttk@t-lab.opal.ne.jp>

	* main.c: Avoid access violation.

2016-06-19  TANAKA Takuji  <ttk@t-lab.opal.ne.jp>

	* version 0.51  Beta version.
	* fwrite.c: Fix bug of option "hanzi_head" in style file.
	Thanks to Dr. Werner Fink.

2016-02-12  Karl Berry  <karl@tug.org>

	* configure.ac (KPSE_CXX_HACK): add to avoid usual libstdc++.so
	dynamic linking failure.

2016-02-09  Akira Kakuto  <kakuto@fuk.kindai.ac.jp>

	* convert.c, fread.c, main.c: Remove unused local variables.
	* qsort.c: Avoid compiler warning in the case of Windows 64bit.

2016-01-31  TANAKA Takuji  <ttk@t-lab.opal.ne.jp>

	* version 0.50  Beta version.
	Support option "icu_rules" in style file.
	Support option "icu_attributes" in style file.
	Support option "priority" in style file
	as similar to mendex.
	Refine and fix several bugs in sorting procedure.
	Fix bug of -g option.
	Update samples.

2015-10-10  TANAKA Takuji  <ttk@t-lab.opal.ne.jp>

	* version 0.06  Alpha version.
	Support dotted/dotless I/i in Turkish.
	Support digraphs in Albanian.
	Modify on surrogate pair.
	Update samples.

2015-09-27  TANAKA Takuji  <ttk@t-lab.opal.ne.jp>

	* version 0.05  Alpha version.
	Support Hanzi ideograph (Han script) indexing.
	It works when icu_locale is
	"zh@collation=unihan", "ja@collation=unihan",
	"ko@collation=unihan" (radical-stroke),
	"zh@collation=stroke" (stroke),
	"zh" (pinyin)  or "zh@collation=zhuyin" (zhuyin).
	Fix bug on surrogate pair.
	Update samples.

2015-08-23  TANAKA Takuji  <ttk@t-lab.opal.ne.jp>

	* version 0.04  Alpha version.
	Support digraphs and trigraphs in Latin scripts.
	Accept long file name for a log file and a index file.
	Update samples.

2015-08-08  TANAKA Takuji  <ttk@t-lab.opal.ne.jp>

	* version 0.03  Alpha version.
	Support option "icu_locale" in style file.
	Support diacritical marks in Latin, Greek, Cyrillic.
	Update samples.

2015-05-17  TANAKA Takuji  <ttk@t-lab.opal.ne.jp>

	* version 0.02  Alpha version.
	Support Korean Hangul.
	Fix bug on Japanese indexing.
	Fix bug on surrogate pair.
	Add option "icu_locale" in style file (Preliminary).

2015-01-24  TANAKA Takuji  <ttk@t-lab.opal.ne.jp>

	* Initial version 0.01.
	Alpha version
	based on mendex version 2.6f [14-Aug-2009] (TeX Live 2015/dev).