Some AWK implementations have a fixed buffer for sprintf; for mawk the
default size is 8192 bytes.  Hoist a string concatenation from
a sprintf call to avoid running into that limit.  See discussion at
https://lists.gnu.org/archive/html/emacs-devel/2023-06/msg00090.html .

There is a conflict between forward matching and backward matching
composition rules involving the same codepoint, which can cause the
backward matching ones not to be invoked.  Ensure that VS-15 (U+FE0E)
and VS-16 (U+FE0F) are composed by forward matching rules instead in
order to avoid this issue.

* admin/unidata/emoji-zwj.awk: Add rules for CHAR+VS-15 and CHAR+VS-16.
* lisp/composite.el: remove backward matching rule for VS-15.  (Bug#63731)

* admin/notes/unicode: Add instructions for emoji-variation-sequences.txt
* admin/unidata/emoji-variation-sequences.txt: New file, imported from
Unicode 15.

* admin/unidata/Makefile.in (gen-clean): Remove some newly-added
generated files.

* admin/unidata/BidiBrackets.txt
* admin/unidata/BidiMirroring.txt
* admin/unidata/Blocks.txt
* admin/unidata/IVD_Sequences.txt
* admin/unidata/IdnaMappingTable.txt
* admin/unidata/NormalizationTest.txt
* admin/unidata/PropertyValueAliases.txt
* admin/unidata/ScriptExtensions.txt
* admin/unidata/Scripts.txt
* admin/unidata/SpecialCasing.txt
* admin/unidata/UnicodeData.txt
* admin/unidata/confusables.txt
* admin/unidata/copyright.html
* admin/unidata/emoji-data.txt
* admin/unidata/emoji-sequences.txt
* admin/unidata/emoji-test.txt
* admin/unidata/emoji-zwj-sequences.txt
* test/manual/BidiCharacterTest.txt: Updated files from Unicode
15.0.

* admin/unidata/unidata-gen.el (unidata-file-alist): Add new ranges.

* lisp/international/fontset.el (script-representative-chars): Add
new scripts.
(otf-script-alist): Update from latest version.
(setup-default-fontset): Add new scripts.
* lisp/international/characters.el: Update syntax and category
tables for new characters and scripts.
(char-width-table): Update for changes in Unicode 15.0.

* test/lisp/international/ucs-normalize-tests.el
(ucs-normalize-tests--failing-lines-part1)
(ucs-normalize-tests--failing-lines-part2): Update per the test
results.

* doc/lispref/nonascii.texi (Character Properties): Update Unicode
version number.

* etc/NEWS: Announce support for Unicode 15.0.

* admin/unidata/blocks.awk: Only mark U+FE0F as belonging to the
'emoji' script.  (Bug#57072)

* lisp/subr.el (compiled-function-p): New function.

* test/lisp/international/ucs-normalize-tests.el (ucs-normalize-part1):
* lisp/gnus/gnus.el (gnus):
* lisp/mh-e/mh-e.el (mh-version):
* lisp/emacs-lisp/macroexp.el (emacs-startup-hook):
* lisp/emacs-lisp/cl-macs.el (compiled-function):
* lisp/emacs-lisp/bytecomp.el (byte-compile-fdefinition)
(byte-compile, display-call-tree):
* lisp/emacs-lisp/byte-opt.el (<toplevel-end>):
* lisp/emacs-lisp/advice.el (ad-compiled-p):
* lisp/cedet/semantic/bovine.el (semantic-bovinate-stream):
* lisp/loadup.el (macroexpand-all):
* admin/unidata/unidata-gen.el (unidata--ensure-compiled): Use it.

* lisp/emacs-lisp/pcase.el (pcase-mutually-exclusive-predicates):
Add entries for it.
(pcase--split-pred): Use it.

* lisp/help-fns.el (help-fns-function-description-header): Use `functionp`.
(help-fns--var-safe-local): Use `compiled-function-p`.

* lisp/url/url-cookie.el (url-cookie-write-file):
* lisp/international/titdic-cnv.el (tit-process-header)
(miscdic-convert):
* lisp/international/ja-dic-cnv.el (skkdic-convert):
* lisp/international/emoji.el (emoji--generate-file):
* lisp/emacs-lisp/loaddefs-gen.el (loaddefs-generate--rubric):
* admin/unidata/unidata-gen.el (unidata-gen-file)
(unidata-gen-charprop): Adjust callers.

* lisp/emacs-lisp/generate-lisp-file.el: Renamed from
generate-file.el.  Also rename some keyword parameters and require
a generator function.