Try and reduce the pain caused by font-lock and syntax-propertize's
wholeline-based operation in buffers made up of a few very long lines
(bug#45898).
* lisp/emacs-lisp/syntax.el (syntax-wholeline-max): New var.
(syntax--lbp): New function.
(syntax-propertize-wholelines): Use it.
* lisp/jit-lock.el (jit-lock--antiblink-post-command): Use `syntax--lbp`.
* lisp/font-lock.el (font-lock-extend-region-wholelines): Rewrite,
using `syntax-propertize-wholelines`.
Nested calls to `syntax-ppss` and `syntax-propertize` can easily
happen unexpectedly via ondemand propertizing or `forward-sexp`.
Refine the handling of nested calls so we detect them more reliably
(e.g. also within `syntax-propertize-extend-region-functions`)
and so that the `syntax-ppss` cache is automatically flushed in case
it might have been filled with data that's become obsolete since.
(syntax-propertize--inhibit-flush): Delete var.
(syntax-propertize--in-process-p): New function to replace it.
(syntax-ppss-flush-cache): Use it.
(syntax-ppss--updated-cache): New var.
(syntax-propertize): Make `syntax-propertize--done` binding apply to
`syntax-propertize-extend-region-functions` as well, as intended (fixes
bug#46713). Use `syntax-ppss--updated-cache` to flush
syntax-ppss cache at the end when needed.
Don't bind `syntax-propertize--inhibit-flush` any more.
(syntax-ppss): Set `syntax-ppss--updated-cache` when applicable.
df04f3e755 Fix a rare segfault in syntax.c
fd1fe1e1ec Add doc to syntax-propertize-function saying it must do a ...
fcd599bbea Minor copyedits of doc of 'with-silent-modifications'
759399cdb1 Improve documentation of 'max-mini-window-height'
3223302aa2 Use modern constant names for the NS pasteboard
985703d380 Fix doc string of 'toggle-menu-bar-mode-from-frame'
184a4977c7 Make vc-bzr tests work with brz 3.1 (bug#43314)
# Conflicts:
# lisp/emacs-lisp/syntax.el
# src/syntax.c
and cannot be combined with other ways of applying syntax-table text
properties.
* lisp/emacs-lisp/syntax.el (syntax-propertize-function): Amend doc string.
* doc/lispref/syntax.texi (Syntax Properties): Amend the description of the
variable.
* lisp/emacs-lisp/syntax.el (syntax-propertize--shift-groups-and-backrefs):
Renamed from syntax-propertize--shift-groups, and also shift
back-references.
(syntax-propertize-rules): Adapt docstring and use renamed function.
* test/lisp/emacs-lisp/syntax-tests.el: New test.
(syntax-propertize--shift-groups-and-backrefs): New ERT test.
Allow use of `syntax-ppss-flush-cache` in `syntax-propertize-function`.
(syntax-propertize--inhibit-flush): New var.
(syntax-propertize): Bind it.
(syntax-ppss-flush-cache): Test it.
* lisp/emacs-lisp/syntax.el (syntax-ppss): Move the description of
the return value from...
* src/syntax.c (Fparse_partial_sexp): ... here because
`syntax-ppss' is what's called over the place, and jumping through
an indirection to get to the value description is inconvenient.
`syntax-ppss` uses `syntax-ppss-table` while parsing the buffer as well
as when it calls `syntax-propertize`, but `syntax-propertize` can also
be called directly rather than via `syntax-ppss` so it needs to explicitly
use `syntax-ppss-table` as well in order to avoid using sometimes one
table and sometimes another.
(syntax-ppss-table): Move before new use.
(syntax-propertize): Use it.
Make it possible to control the relative ordering of functions on hooks by
specifying `depth` in the same was as was possible with `add-function`.
* lisp/electric.el (electric--sort-post-self-insertion-hook):
Delete function.
(electric-indent-mode, electric-layout-mode, electric-quote-mode):
* lisp/elec-pair.el (electric-pair-mode): Use new `depth` arg instead of
electric--sort-post-self-insertion-hook.
* lisp/emacs-lisp/syntax.el (syntax-propertize, syntax-ppss):
Use new `depth` arg to make sure noone accidentally gets added
after syntax-ppss-flush-cache.
* doc/lispref/modes.texi (Setting Hooks): Document new `depth` arg.
* test/lisp/subr-tests.el (subr-tests-add-hook-depth): New test.
Restore lines saying "Maintainer: emacs-devel@gnu.org" when there is
no special maintainer for a file. Although this wasn't documented
it was common practice and removing the lines didn't have consensus.
(syntax-ppss-after-change-function): Mark it as obsolete.
* lisp/font-lock.el (font-lock-apply-syntactic-highlight):
Use syntax-ppss-flush-cache instead.
* lisp/emacs-lisp/syntax.el (syntax-ppss-stats):
Use integers, not floating-point, for stats, now that integers are
unbounded. Almost always these should be fixnums. Add 1 to last
slot’s car so that this addition need not be done at runtime.
(syntax-pps-stats, syntax-ppss): Use integers for calculations.
(syntax-ppss--update-stats): New convenience function.
(syntax-ppss): Use it.
* lisp/emacs-lisp/syntax.el (syntax-ppss-wide):
New variable, to contain the data from `syntax-ppss-last' and
`syntax-ppss-cache'.
(syntax-ppss-cache, syntax-ppss-last): Remove.
(syntax-ppss-narrow, syntax-ppss-narrow-start): New variables.
(syntax-ppss-flush-cache): Flush both caches.
(syntax-ppss--data): Return the appropriate last result and
buffer cache for the current restriction.
(syntax-ppss, syntax-ppss-debug): Use it (bug#22983).
Most of this change is to boilerplate commentary such as license URLs.
This change was prompted by ftp://ftp.gnu.org's going-away party,
planned for November. Change these FTP URLs to https://ftp.gnu.org
instead. Make similar changes for URLs to other organizations moving
away from FTP. Also, change HTTP to HTTPS for URLs to gnu.org and
fsf.org when this works, as this will further help defend against
man-in-the-middle attacks (for this part I omitted the MS-DOS and
MS-Windows sources and the test tarballs to keep the workload down).
HTTPS is not fully working to lists.gnu.org so I left those URLs alone
for now.
