This patch should not change behavior. It typically omits backslashes
where they are redundant (e.g., in the string literal "^\$").
In a few places, insert backslashes where they make regular
expressions clearer: e.g., replace "^\*" (equivalent to "^*") with
"^\\*", which has the same effect as a regular expression.
Also, use ‘\ %’ instead of ‘\%’ when avoiding confusion with SCCS IDs,
and similarly use ‘\ $’ instead of ‘\$’ when avoiding confusion with
RCS IDs, as that makes it clearer that the backslash is intended.
(perl-indent-line): Use syntax-ppss to detect we're in a doc-section.
(perl-continuation-line-p): Don't skip over anything else than labels.
Return the previous char.
(perl-calculate-indent): Use syntax-ppss instead of parse-start
and update callers accordingly. For continuation lines, check the
the case of array hashes.
(perl-backward-to-noncomment): Make it non-interactive.
(perl-backward-to-start-of-continued-exp): Rewrite.
* test/indent/perl.perl: Add indentation pattern for hash-table entries.
Remove redundant :group args.
(perl-nochange): Change default to be closer to other major modes's
standard behavior.
(perl-indent-line): Don't consider text on current line as a
valid beginning of function from which to indent.
* etc/NEWS: Document new Prettify Symbols mode.
* lisp/progmodes/prog-mode.el (prettify-symbols-alist): Rename from
`prog-prettify-symbols', and make a local defvar instead of defcustom.
(prettify-symbols--keywords): Rename from `prog-prettify-symbols-alist'
and make a local defvar.
(prettify-symbols--compose-symbol): Rename from
`prog--prettify-font-lock-compose-symbol'.
(prettify-symbols--make-keywords): Rename from
`prog-prettify-font-lock-symbols-keywords' and simplify.
(prog-prettify-install): Remove.
(prettify-symbols-mode): New minor mode, based on `prog-prettify-install'.
(turn-on-prettify-symbols-mode): New function.
(global-prettify-symbols-mode): New globalized minor mode.
* lisp/emacs-lisp/lisp-mode.el (lisp-mode-variables):
* lisp/progmodes/cfengine.el (cfengine3-mode):
* lisp/progmodes/perl-mode.el (perl-mode): Don't call `prog-prettify-install';
set `prettify-symbols-alist' instead.
(perl-syntax-propertize-function): Match here-doc markers.
(perl-syntax-propertize-special-constructs): Find their end.
(perl-imenu-generic-expression): Use [:alnum:].
Suggested by Jari Aalto.
* lisp/emacs-lisp/lisp-mode.el (lisp-current-defun-name): New.
(lisp-mode-variables): Use it.
* lisp/progmodes/cc-mode.el (c-common-init):
* lisp/progmodes/cperl-mode.el (cperl-mode): Set a value for
add-log-current-defun-function.
* lisp/progmodes/m4-mode.el (m4-current-defun-name): New function.
(m4-mode): Use it.
* lisp/progmodes/perl-mode.el (perl-current-defun-name): New.
(perl-mode): Use it.
* lisp/progmodes/scheme.el (scheme-mode-variables, dsssl-mode): Use
lisp-current-defun-name.
* lisp/textmodes/tex-mode.el (tex-current-defun-name): New.
(tex-common-initialization): Use it.
* lisp/textmodes/texinfo.el (texinfo-current-defun-name): New.
(texinfo-mode): Use it.
* lisp/vc/add-log.el (add-log-current-defun-function): Doc fix.
(add-log-current-defun): Move mode-specific code to other files.
(add-log-lisp-like-modes, add-log-c-like-modes)
(add-log-tex-like-modes): Variables deleted.
Fixes: debbugs:2224
(perl--prettify-symbols-alist): New const.
(perl--font-lock-compose-symbol, perl--font-lock-symbols-keywords): New funs.
(perl-font-lock-keywords-2): Use them.
(perl-electric-noindent-p): New function.
(perl-mode): Use it to set up electric-indent-mode.
(perl-electric-terminator, perl-indent-command): Mark obsolete.
(perl-mode-map): Remove bindings for them.
(perl-imenu-generic-expression, perl-outline-level):
Match functions&packages in column>0.
* lisp/font-lock.el (font-lock-syntactic-keywords): Make obsolete.
(font-lock-fontify-syntactic-keywords-region): Move handling of
font-lock-syntactically-fontified to...
(font-lock-default-fontify-region): ...here.
Let syntax-propertize-function take precedence.
(font-lock-fontify-syntactically-region): Cal syntax-propertize.
* lisp/emacs-lisp/regexp-opt.el (regexp-opt-depth): Skip named groups.
* lisp/emacs-lisp/syntax.el (syntax-propertize-function)
(syntax-propertize-chunk-size, syntax-propertize--done)
(syntax-propertize-extend-region-functions): New vars.
(syntax-propertize-wholelines, syntax-propertize-multiline)
(syntax-propertize--shift-groups, syntax-propertize-via-font-lock)
(syntax-propertize): New functions.
(syntax-propertize-rules): New macro.
(syntax-ppss-flush-cache): Set syntax-propertize--done.
(syntax-ppss): Call syntax-propertize.
* lisp/progmodes/ada-mode.el (ada-set-syntax-table-properties)
(ada-after-change-function, ada-initialize-syntax-table-properties)
(ada-handle-syntax-table-properties): Only define when
syntax-propertize is not available.
(ada-mode): Use syntax-propertize-function.
* lisp/progmodes/autoconf.el (autoconf-mode):
Use syntax-propertize-function.
(autoconf-font-lock-syntactic-keywords): Remove.
* lisp/progmodes/cfengine.el (cfengine-mode):
Use syntax-propertize-function.
(cfengine-font-lock-syntactic-keywords): Remove.
* lisp/progmodes/cperl-mode.el (cperl-mode): Use syntax-propertize-function.
* lisp/progmodes/fortran.el (fortran-mode): Use syntax-propertize-function.
(fortran--font-lock-syntactic-keywords): New var.
(fortran-line-length): Update syntax-propertize-function and
fortran--font-lock-syntactic-keywords.
* lisp/progmodes/gud.el (gdb-script-syntax-propertize-function): New var;
replaces gdb-script-font-lock-syntactic-keywords.
(gdb-script-mode): Use it.
* lisp/progmodes/js.el (js--regexp-literal): Define while compiling.
(js-syntax-propertize-function): New var; replaces
js-font-lock-syntactic-keywords.
(js-mode): Use it.
* lisp/progmodes/make-mode.el (makefile-syntax-propertize-function):
New var; replaces makefile-font-lock-syntactic-keywords.
(makefile-mode): Use it.
(makefile-imake-mode): Adjust.
* lisp/progmodes/mixal-mode.el (mixal-syntax-propertize-function): New var;
replaces mixal-font-lock-syntactic-keywords.
(mixal-mode): Use it.
* lisp/progmodes/octave-mod.el (octave-syntax-propertize-sqs): New function
to replace octave-font-lock-close-quotes.
(octave-syntax-propertize-function): New function to replace
octave-font-lock-syntactic-keywords.
(octave-mode): Use it.
* lisp/progmodes/perl-mode.el (perl-syntax-propertize-function): New fun to
replace perl-font-lock-syntactic-keywords.
(perl-syntax-propertize-special-constructs): New fun to replace
perl-font-lock-special-syntactic-constructs.
(perl-font-lock-syntactic-face-function): New fun.
(perl-mode): Use it.
* lisp/progmodes/python.el (python-syntax-propertize-function): New var to
replace python-font-lock-syntactic-keywords.
(python-mode): Use it.
(python-quote-syntax): Simplify and adjust to new use.
* lisp/progmodes/ruby-mode.el (ruby-here-doc-beg-re):
Define while compiling.
(ruby-here-doc-end-re, ruby-here-doc-beg-match)
(ruby-font-lock-syntactic-keywords, ruby-comment-beg-syntax)
(syntax-ppss, ruby-in-ppss-context-p, ruby-in-here-doc-p)
(ruby-here-doc-find-end, ruby-here-doc-beg-syntax)
(ruby-here-doc-end-syntax): Only define when
syntax-propertize is not available.
(ruby-syntax-propertize-function, ruby-syntax-propertize-heredoc):
New functions.
(ruby-in-ppss-context-p): Update to new syntax of heredocs.
(electric-indent-chars): Silence bytecompiler.
(ruby-mode): Use prog-mode, syntax-propertize-function, and
electric-indent-chars.
* lisp/progmodes/sh-script.el (sh-st-symbol): Remove.
(sh-font-lock-close-heredoc, sh-font-lock-open-heredoc): Add eol arg.
(sh-font-lock-flush-syntax-ppss-cache, sh-font-lock-here-doc): Remove.
(sh-font-lock-quoted-subshell): Assume we've already matched $(.
(sh-font-lock-paren): Set syntax-multiline.
(sh-font-lock-syntactic-keywords): Remove.
(sh-syntax-propertize-function): New function to replace it.
(sh-mode): Use it.
* lisp/progmodes/simula.el (simula-syntax-propertize-function): New var to
replace simula-font-lock-syntactic-keywords.
(simula-mode): Use it.
* lisp/progmodes/tcl.el (tcl-syntax-propertize-function): New var to
replace tcl-font-lock-syntactic-keywords.
(tcl-mode): Use it.
* lisp/progmodes/vhdl-mode.el (vhdl-mode): Use syntax-propertize-function
if available.
(vhdl-fontify-buffer): Adjust.
* lisp/textmodes/bibtex.el (bibtex-mode): Use syntax-propertize-function.
* lisp/textmodes/reftex.el (font-lock-syntactic-keywords): Don't declare
since we don't use it.
* lisp/textmodes/sgml-mode.el (sgml-syntax-propertize-function): New var to
replace sgml-font-lock-syntactic-keywords.
(sgml-mode): Use it.
* lisp/textmodes/tex-mode.el (tex-common-initialization, doctex-mode):
Use syntax-propertize-function.
* lisp/textmodes/texinfo.el (texinfo-syntax-propertize-function): New fun
to replace texinfo-font-lock-syntactic-keywords.
(texinfo-mode): Use it.
* test/indent/octave.m: Remove some `fixindent' not needed any more.
