This covers both sequences using Zero-Width-Joiner codepoints and
those without. Bug#39799, I hope.
* .gitignore: Add emoji-zwj.el
* admin/notes/unicode: Add emoji-zwj-sequences.txt and
emoji-sequences.txt references. Describe how to test after updating
to a newer Unicode version.
* admin/unidata/Makefile.in (all): add emoji-zwj.el as a dependency.
(emoji-zwj.el): Add target plus rules for building.
(gen-clean): Add emoji-zwj.el.
* admin/unidata/README: Add emoji-zwj-sequences.txt and
emoji-sequences.txt references.
* admin/unidata/blocks.awk: Force emoji script to be used for certain
codepoints that are used by the Unicode sequences.
* admin/unidata/emoji-sequences.txt: New file.
* admin/unidata/emoji-zwj-sequences.txt: New file.
* admin/unidata/emoji-zwj.awk: New file. Derives
composition-function-table rules from emoji-zwj-sequences.txt, plus
hardcodes some derived manually from emoji-sequences.txt.
* etc/NEWS: Announce change.
* lisp/international/characters.el: Load the generated emoji-zwj.el
* src/Makefile.in (emoji-zwj): New target.
(temacs): Add emoji-zwj as a dependency.
* admin/notes/unicode: Describe how to update emoji for new Unicode release.
* admin/unidata/Makefile.in: Pass emoji-data.txt to
blocks.awk script.
* admin/unidata/README: Add pointer to emoji-data.txt file.
* admin/unidata/blocks.awk: Parse emoji-data.txt, add emoji codepoints
to the 'emoji' script (except for the ASCII ones).
* admin/unidata/emoji-data.txt: New file.
* etc/NEWS: Describe new 'emoji' script.
* etc/TODO: Update item about 'emoji' script.
* lisp/international/fontset.el (script-representative-chars): Add
'emoji' script.
(setup-default-fontset): Add 'emoji' script. Use "Noto Color Emoji"
as default font for it.
Implement unconditional special casing rules defined in Unicode standard.
Among other things, they deal with cases when a single code point is
replaced by multiple ones because single character does not exist (e.g.
‘fi’ ligature turning into ‘FL’) or is not commonly used (e.g. ß turning
into SS).
* admin/unidata/SpecialCasing.txt: New data file pulled from Unicode
standard distribution.
* admin/unidata/README: Mention SpecialCasing.txt.
* admin/unidata/unidata-get.el (unidata-gen-table-special-casing,
unidata-gen-table-special-casing--do-load): New functions generating
‘special-uppercase’, ‘special-lowercase’ and ‘special-titlecase’
character Unicode properties built from the SpecialCasing.txt Unicode
data file.
* src/casefiddle.c (struct casing_str_buf): New structure for
representing short strings used to handle one-to-many character
mappings.
(case_character_imlp): New function which can handle one-to-many
character mappings.
(case_character, case_single_character): Wrappers for the above
functions. The former may map one character to multiple (or no)
code points while the latter does what the former used to do (i.e.
handles one-to-one mappings only).
(do_casify_natnum, do_casify_unibyte_string,
do_casify_unibyte_region): Use case_single_character.
(do_casify_multibyte_string, do_casify_multibyte_region): Support new
features of case_character.
* (do_casify_region): Updated to reflact do_casify_multibyte_string
changes.
(casify_word): Handle situation when one character-length of a word
can change affecting where end of the word is.
(upcase, capitalize, upcase-initials): Update documentation to mention
limitations when working on characters.
* test/src/casefiddle-tests.el (casefiddle-tests-char-properties):
Add test cases for the newly introduced character properties.
(casefiddle-tests-casing): Update test cases which are now passing.
* test/lisp/char-fold-tests.el (char-fold--ascii-upcase,
char-fold--ascii-downcase): New functions which behave like old ‘upcase’
and ‘downcase’.
(char-fold--test-match-exactly): Use the new functions. This is needed
because otherwise fi and similar characters are turned into their multi-
-character representation.
* doc/lispref/strings.texi: Describe issue with casing characters versus
strings.
* doc/lispref/nonascii.texi: Describe the new character properties.
Some tests are marked as expected to fail.
* test/lisp/international/ucs-normalize-tests.el: New tests.
* admin/unidata/NormalizationTest.txt: Add data for tests.
* admin/unidata/README: Add URL for NormalizationTest.txt.
* admin/notes/unicode: Add note about running (and updating the data
for) the new tests. Remove note about normalization being unsupported.
* admin/unidata/Makefile.in (AWK): New, set by configure.
(all): Add charscript.el.
(blocks): New variable.
(charscript.el, ${unidir}/charscript.el): New targets.
(extraclean): Also remove generated charscript.el.
* admin/unidata/blocks.awk: New script.
* admin/unidata/Blocks.txt: New data file, from unicode.org.
* lisp/international/characters.el: Load charscript.
* src/Makefile.in (charscript): New variable.
(${charscript}): New target.
(${lispintdir}/characters.elc): Depend on charscript.elc.
(temacs$(EXEEXT)): Depend on charscript.
; * admin/unidata/README: Mention Blocks.txt.
; * .gitignore: Add lisp/international/charscript.el.
* admin/unidata/IVD_Sequences.txt: New file.
* admin/unidata/Makefile.in (${top_srcdir}/src/macuvs.h): New rule.
(all): Build it.
(extraclean): Remove it.
* admin/unidata/README: Mention BidiMirroring.txt and IVD_Sequences.txt.
* admin/unidata/copyright.html: Update to current version from Unicode
Consortium.
* admin/unidata/uvs.el: Rename from admin/mac/uvs.el.
(uvs-print-table-ivd): Output a header in the form that
unidata-gen.el generates.
* lisp/international/README: Refer to the Unicode Terms of Use rather
than copying it bodily here, as that simplifies maintenance.
* src/Makefile.in ($(srcdir)/macuvs.h): New rule.
* src/macuvs.h: Use automatically-generated header.
admin/unidata/README:
admin/unidata/copyright.html:
admin/unidata/BidiMirroring.txt:
admin/unidata/UnicodeData.txt: Update for the latest version 6.1 of
the Unicode Standard.
lisp/international/uni-bidi.el:
lisp/international/uni-category.el:
lisp/international/uni-combining.el:
lisp/international/uni-decimal.el:
lisp/international/uni-decomposition.el:
lisp/international/uni-digit.el:
lisp/international/uni-lowercase.el:
lisp/international/uni-mirrored.el:
lisp/international/uni-name.el:
lisp/international/uni-numeric.el:
lisp/international/uni-titlecase.el:
lisp/international/uni-uppercase.el: Update for Unicode 6.1.
