* lisp/completion-preview.el
(completion-preview-inhibit-functions): New option.
(completion-preview--post-command): Respect it.
* etc/NEWS: Announce it.
* src/buffer.c (overlays_in): Fix commentary to match the code.
(Foverlays_in, Foverlays_at): Doc fixes. (Bug#80242)
* test/src/buffer-tests.el (test-overlays-at-2): Add one test.
* doc/lispref/display.texi (Finding Overlays): Update and improve
the documentation of 'overlays-in' and 'overlays-at'.
* etc/NEWS: Announce the changes.
The greedy regexp matching, broken scoring and broken highlight were
sources of frequent complaints about the 'flex' matching style. This
commit fixes that.
Inspired by the 'hotfuzz' style (available at
https://github.com/axelf4/hotfuzz) it uses a modified version of Gotoh's
1982 dynamic programming algorithm. It is strictly more correct than the
"old" flex. For example, when matching the pattern 'goto' to no longer
will 'eglot-format' be sorted before some hypothetical much better
'goobarbaz-goto'. And of course the highlighting is also correctly
placed on the 'goto', not scattered across the candidate.
Regarding performance, it is faster than the naive 'flex', primarily
because of the Elisp rewrite in minibuffer.el. The matching and costing
algorithm matters but is not the bottleneck.
The Elisp parts of the style were almost completely decoupled from the
pcm/substring styles in lisp/minibuffer.el. Only
'completion-flex-try-completion' uses some of pcm's code for pattern
augmentation.
* src/minibuf.c (completion--flex-cost-gotoh): New function.
* lisp/minibuffer.el (completion-flex--pattern-str): New variable.
(flex-score-match-tightness): Make obsolete.
(completion--flex-all-completions-1): New helper function.
(completion-flex-try-completion, completion-flex-all-completions): Rewrite.
(completion-substring--all-completions): No longer take transform-pattern-fn.
(completion--flex-adjust-metadata): Tweak.
(completion--flex-score, completion--flex-score-1)
(completion--flex-score-last-md, completion-flex--make-flex-pattern): Delete.
* test/lisp/minibuffer-tests.el (completion--sorted-flex-completions):
New helper function.
(completion-flex-test-non-ascii): New test.
(completion--pcm-score): Delete.
(completion-pcm-test-3, completion-pcm-test-4)
(completion-substring-test-1, completion-substring-test-2)
(completion-flex-test-2, completion-flex-test-3): Tweak.
* etc/NEWS: Describe change.
Now that battery--upower-subscribe registers to signals from
DisplayDevice (bug#80229), it is possible to react to more than just
State changes, including Percentage and IsPresent (although the
latter may already be covered by the DeviceAdded and DeviceRemoved
signals).
That means that it should be possible to disable polling via
battery-update-timer and still get timely mode line updates.
* etc/NEWS
(Changes in Specialized Modes and Packages in Emacs 31.1):
Announce new battery-update-interval :type.
* lisp/battery.el (battery-update-interval): Allow setting to nil.
(display-battery-mode): Do not create battery-update-timer then.
(battery-upower-display-device-path): New constant.
(battery--upower-subscribe): Use it.
(battery-upower-subscribe-properties): New variable.
(battery--upower-props-changed): Use it for more flexibility over
which DisplayDevice properties to react to.
(battery--upower-signal-handler): Call battery-update-handler
directly when there is no battery-update-timer.
* lisp/icomplete.el (icomplete-ret): No longer conditionalize on
icomplete-show-matches-on-no-input.
Suggested by Juri Linkov <juri@linkov.net> in bug#62108.
(icomplete-show-matches-on-no-input, icomplete-ret):
* etc/NEWS: Improve documentation.
This package provides platform-neutral interfaces to block your
system from entering idle sleep and a hook to process pre-sleep
and post-wake events.
Implementations are for D-Bus on GNU/Linux, macOS/GNUstep, and
MS-Windows.
* lisp/system-sleep.el: New package.
* src/fns.c: Qpre_sleep, Qpost_wake: New DEFSYM.
* src/nsfns.m (Fns_block_system_sleep, Fns_unblock_system_sleep)
(syms_of_nsfns): New functions.
* src/nsterm.m (applicationDidFinishLaunching): Subscribe to
pre-sleep and post-wake notifications.
(systemWillSleep, systemDidWake): New function.
* src/w32fns.c (Fw32_block_system_sleep)
(Fw32_unblock_system_sleep, Fw32_system_sleep_block_count)
(sleep_notification_callback)
(w32_register_for_sleep_notifications): New function.
(syms_of_w32fns): Sw32_unblock_system_sleep
Sw32_block_system_sleep Sw32_system_sleep_block_count: New
defsubr.
* src/w32term.h (Fw32_block_system_sleep): New extern.
* src/w32term.c (w32_initialize): Call
w32_register_for_sleep_notifications.
* doc/lispref/os.texi: Document the system-sleep package.
* doc/lispref/commands.texi: Update sleep-event special
documentation.
* etc/NEWS: Announce the new package.
* lisp/progmodes/project.el: Describe the new cache in Commentary,
the "VC-aware project" section.
(project-vc-cache-timeout)
(project-vc-non-essential-cache-timeout): New variables.
(project--get-cached, project--set-cached):
New functions.
(project-try-vc, project--value-in-dir): Use them.
(project--read-dir-locals): New function, extracted from the
above. Return the full alist, to be saved to cache at once.
(project--clear-cache): New function.
(project-remember-projects-under)
(project-forget-zombie-projects, project-forget-projects-under):
Use it.
(project-uniquify-dirname-transform, project-mode-line-format):
Bind 'non-essential' to choose the longer caching strategy.
(project-name-cache-timeout, project-name-cached): Remove.
(project-mode-line-format): Switch to calling 'project-name'
directly, with the new caching in use.
Co-authored-by: Juri Linkov <juri@linkov.net>
* admin/scrape-elpa.el (scrape-elpa--safe-eval): Add new
function.
(scrape-elpa): Evaluate part of the matched expression to catch
more entries.
* etc/package-autosuggest.eld: Update database.
* lisp/gnus/gnus-topic.el (gnus-group-sort-selected-topic): New
function to sort selected groups into topic.
(gnus-topic-mode): Use it as sort selected function in topic
mode.
* etc/NEWS: Announce the change.
* doc/emacs/maintaining.texi (Looking Up Identifiers):
Mention that 'M-.' can signal an error.
(Xref): Recommend using 'etags-regen-mode' (bug#43086).
* etc/NEWS: Add updated marks.
* lisp/vc/vc-dispatcher.el (vc-user-edit-command-history): Use
this as a dynamically bound variable, not a minibuffer history.
(vc-user-edit-command): Pass its value to read-shell-command.
* lisp/vc/vc-git.el (vc-git--pushpull):
* lisp/vc/vc.el (vc-edit-next-command): Bind it.
(vc-edit-next-command-history): New variable.
* etc/NEWS: Document the change.
* lisp/progmodes/xref.el (xref-find-backend):
Allow returning nil (bug#43086).
(xref-backend-definitions, xref-backend-apropos):
Signal user-error when no backend is available. The error text
suggests a few built-in Xref backends.
(xref-backend-identifier-completion-table): Default to nil.
(xref--no-backend-available): New helper function.
* lisp/progmodes/etags.el (etags--xref-backend):
Return nil when no tags table is visited.
This option controls the format of the help-echo when hovering
over the time display in mode line. (Bug#80143)
* lisp/time.el (display-time-help-echo-format): Add option.
(display-time-string-forms): Use it.
* etc/NEWS (Time): Announce the new option.
This function will truncate a string on a pixelwise basis in a
work buffer and using a binary search rather than brute force.
* lisp/emacs-lisp/subr-x.el (work-buffer--prepare-pixelwise):
New defun helper function.
(string-pixel-width): Use the helper function.
(truncate-string-pixelwise): New defun.
* test/lisp/misc-tests.el (misc-test-truncate-string-pixelwise):
(misc-test-truncate-string-pixelwise-unicode): New test.
* doc/lispref/display.texi (Size of Displayed Text): Document
the function.
* etc/NEWS: Announce the function.
* lisp/vc/diff-mode.el (diff--revert-kill-hunks): New workhorse
routine.
(diff-hunk-kill, diff-revert-and-kill-hunk): Call it.
(diff-hunk-kill): New BEG and END parameters and interactive
form.
* doc/emacs/files.texi (Diff Mode):
* etc/NEWS: Document the change.
* lisp/emacs-lisp/checkdoc.el (checkdoc--batch-flag): New variable.
(checkdoc-rogue-spaces, checkdoc-message-text): Use it along the
check for interactive calls to be able to collect errors in the
diagnostic buffer.
(checkdoc-show-diagnostics): Don't show the diagnostic buffer
when 'checkdoc--batch-flag' is non-nil.
(checkdoc-batch): New function to check the buffer and print the
content of the diagnostic buffer.
* lisp/icomplete.el (icomplete-exit): New alias for 'icomplete-fido-exit'.
(icomplete-minibuffer-map): Bind it to "M-j" .
* lisp/replace.el (multi-occur--prompt): Show "M-j" bound to 'icomplete-exit'
in 'icomplete-mode'.
* lisp/minibuffer.el (minibuffer--message-overlay)
(minibuffer--message-timer): New variables.
(minibuffer--delete-message-overlay): New function.
(minibuffer-message): Use a timer and 'pre-command-hook' to
clear message overlay instead of blocking with
'sit-for'. (bug#79510)
* etc/NEWS: Document the change.
The main reason for this is that then these commands can have
the same bindings in VC-Dir buffers that they have under
vc-prefix-map. 'T' is a good mnemonic for "Topic" and a
serviceable mnemonic for "outsTanding".
* lisp/vc/vc-hooks.el (vc-prefix-map): Move 'o' to 'T'.
* lisp/vc/vc-dir.el (vc-dir-mode-map): New 'T' bindings.
'select-frame-by-id' will also undelete a deleted frame ID.
* lisp/frame.el (select-frame-by-id, undelete-frame-by-id): New
commands.
(make-frame-ids-alist, frame-by-id, frame-id-live-p)
(undelete-frame-id-index): New defuns.
* etc/NEWS: Announce the commands.
* etc/NEWS: Announce the change.
* src/dispextern.h (struct glyph_row): Add
'extra_line_spacing_above' member.
(struct it): Add 'extra_line_spacing_above' member.
* src/frame.h (struct frame): Add 'extra_line_spacing_above'
member. Update comment for 'extra_line_spacing.'
* src/buffer.c (syms_of_buffer): Update the docstring of
'line-spacing' to describe the cons cell usage.
* src/buffer.h (struct buffer): Update comment for
'extra_line_spacing'.
* src/frame.c (gui_set_line_spacing): Handle cons cell value for
'line-spacing'. Calculate and set 'extra_line_spacing_above'
for both integer and float pairs.
* src/xdisp.c (init_iterator): Initialize 'extra_line_spacing_above'
from buffer or frame 'line-spacing', handling cons cells for both
integer and float values.
(gui_produce_glyphs): Use 'extra_line_spacing_above' to distribute
spacing between ascent and descent. Update 'max_extra_line_spacing'
calculation.
(resize_mini_window): Take line spacing into account when resizing the
mini window. Pass height of a single line to 'grow_mini_window' and
'shrink_mini_window'.
* src/window.c (grow_mini_window, shrink_mini_window): Add unit
argument which defines height of a single line.
* src/window.h (grow_mini_window, shrink_mini_window): Adjust function
prototypes accordingly with unit argument.
* lisp/subr.el (total-line-spacing): New function to calculate total
spacing from a number or cons cell.
(posn-col-row): Use total-line-spacing.
* lisp/simple.el (default-line-height): Use 'total-line-spacing'.
* lisp/textmodes/picture.el (picture-mouse-set-point): Use
'total-line-spacing'.
* lisp/window.el (window-default-line-height): Use
'total-line-spacing'.
(window--resize-mini-window): Take 'line-spacing' into account.
* test/lisp/subr-tests.el (total-line-spacing): New test.
* test/src/buffer-tests.el (test-line-spacing): New test.
* doc/emacs/display.texi (Display Custom): Document that
'line-spacing' can be a cons cell.
(Line Height): Document the new cons cell format for 'line-spacing'
to allow vertical centering.
Co-authored-by: Przemysław Alexander Kamiński <alexander@kaminski.se>
Co-authored-by: Daniel Mendler <mail@daniel-mendler.de>
* etc/NEWS: Announce the new customization option (bug#80215).
* lisp/textmodes/yaml-ts-mode.el (yaml-ts-mode): New customization group.
(yaml-ts-mode-yamllint-options): New customization option.
(yaml-ts-mode--flymake-process): New variable that stores the reference
to the flymake process.
(yaml-ts-mode-flymake): New function that implements support for Flymake.
* lisp/progmodes/json-ts-mode.el (json-ts--get-path-at-node)
(json-ts--path-to-jq, json-ts--path-to-python): New functions.
(json-ts-jq-path-at-point): New command for getting JSON path at point.
* test/lisp/progmodes/json-ts-mode-tests.el: New file.
Add tests for the utility command.
* etc/NEWS: Announce new command 'json-ts-jq-path-at-point' (bug#80190).
Some language servers request file watching for a very large number of
directories (e.g. Python virtualenvs), which can exhaust system
resources and cause slow startup.
https://github.com/joaotavora/eglot/issues/1568
* lisp/progmodes/eglot.el (eglot-max-file-watches): New variable.
(eglot--count-file-watches): New function.
(eglot--watch-globs): Use them to limit watches. Signal jsonrpc-error
when limit is reached.
(eglot-watch-files-outside-project-root): Fix docstring punctuation.
* etc/EGLOT-NEWS: Mention change.
The current 2026 landscape suggests servers (especially gopls
and ocamllsp) take advantage of this, so let's give it to them
by default.
* lisp/progmodes/eglot.el (eglot-advertise-cancellation):
Default to t.
* etc/EGLOT-NEWS: Mention change.
The info returned from `garbage-collect` is really handy to
track the evolution of the heap size, but sadly it's available only
at the cost of running a full GC, which has two big downsides:
it's slow, it affects what we're measuring, and it can't be used
in `post-gc-hook`.
So, this patch makes it available without running the GC.
* src/alloc.c (Fgarbage_collect_heapsize): New function, extracted from
`Fgarbage_collect`.
(Fgarbage_collect): Use it.
(syms_of_alloc): defsubr it.
* doc/lispref/internals.texi (Garbage Collection): Extract
documentation for it from that of `garbage-collect`.
* lisp/textmodes/text-mode.el (center-line-mode--track-changes):
New local variable for storing the id of the change tracker registered
for the current buffer.
(center-line-mode--track-changes-signal): New function to be called by
the track-changes library whenever there is a change in the current
buffer.
(center-line-mode--track-changes-function): New function called from the
above signal function, iterates over the lines of the modified region,
calling 'center-line' for each non-empty line.
(center-line-mode): New minor mode.
* etc/NEWS: Document the new minor mode.
* doc/misc/dbus.texi (Top): Add "Inhibitor Locks" submenu.
Remove trailing period from chapter and section titles.
(Inhibitor Locks): New node.
* etc/NEWS: New D-Bus functions to support systemd inhibitor locks.
Presentational fixes and improvements.
* src/dbusbind.c (xd_registered_inhibitor_locks): New variable.
(Fdbus_make_inhibitor_lock, Fdbus_close_inhibitor_lock)
(Fdbus_registered_inhibitor_locks): New DEFUNs. (Bug#79963)
(syms_of_dbusbind_for_pdumper): Initialize
`xd_registered_inhibitor_locks'.
(syms_of_dbusbind): Declare subroutines
`Sdbus_make_inhibitor_lock', `Sdbus_close_inhibitor_lock' and
`Sdbus_registered_inhibitor_locks'. Declare symbol `Qdbus_call_method'.
staticpro `xd_registered_inhibitor_locks'.
* test/lisp/net/dbus-tests.el (dbus--test-systemd-service)
(dbus--test-systemd-path, dbus--test-systemd-manager-interface):
New defconsts.
(dbus-test10-inhibitor-locks): New test.
* etc/NEWS:
* doc/emacs/maintaining.texi (Projects):
* lisp/progmodes/project.el (project-mode-line): Update
documentation due to changes in bug#78545.
Add an optional 'context' argument to 'make-progress-reporter'
which 'progress-reporter-echo-area' consults to inhibit updates
if the context is 'async' and the echo area is busy.
* lisp/subr.el (make-progress-reporter): Add the optional
'context' argument.
(progress-reporter-context): New defun accessor.
(progress-reporter-echo-area): Consult
'progress-reporter-context'.
* doc/lispref/display.texi: Document context.
* etc/NEWS: Announce context.
* lisp/textmodes/ispell.el (ispell-save-corrections-as-abbrevs):
New user option.
(ispell--abbrev-saving-allowed)
(ispell--save-correction-as-abbrev): New variables.
(ispell--maybe-save-correction-abbrev): New function.
(ispell-word, ispell-process-line): Use them to save corrections
as abbrevs when appropriate (bug#79985).
(ispell-command-loop): Add C-u as command character to toggle
abbrev saving for an immediately following replacement command.
(ispell-help): Document C-u binding.
* doc/emacs/fixit.texi (Spelling): Document new feature.
A unique frame id is assigned to a new or cloned frame, and
reused on an undeleted frame.
The id facilitates unambiguous identification among frames that
share identical names or titles, deleted frames where a live
frame object no longer exists that we can resurrect by id, for
example via 'tab-bar-undo-close-tab'. It also aids debugging at
the C level using the frame struct member id.
Rewrite 'clone-frame' and 'undelete-frame' to not let bind
variables that 'make-frame' uses to avoid conflicts with nested
'make-frame' calls, for example via
'after-make-frame-functions'.
* lisp/frame.el (clone-frame, undelete-frame): Use
'frame--purify-parameters' to supply parameters explicitly.
(undelete-frame--save-deleted-frame): Save frame id for
restoration.
(undelete-frame): Restore frame id.
(frame--purify-parameters): New defun.
(make-frame): Assign a new id for a new or cloned frame, reuse
for undeleted frame.
* src/frame.h (struct frame): Add id member.
(frame_next_id): New extern.
* src/frame.c (frame_next_id): New global counter.
(frame_set_id, frame_set_id_from_params): New function.
(Fframe_id): New DEFUN.
(syms_of_frame <Sframe_id>): New defsubr.
(syms_of_frame <Qinternal_id>): New DEFSYM.
(syms_of_frame <frame_internal_parameters>): Add 'Qinternal_id'.
* src/androidfns.c (Fx_create_frame):
* src/haikufns.c (Fx_create_frame):
* src/nsfns.m (Fx_create_frame):
* src/pgtkfns.c (Fx_create_frame):
* src/w32fns.c (Fx_create_frame):
* src/xfns.c (Fx_create_frame): Call 'frame_set_id_from_params'.
* doc/lispref/frames.texi: Add documentation.
* etc/NEWS: Announce frame id.
In a large (or simply long) file with many diagnostics, calling
eglot-range-region repeteadly constantly throws Emacs for a spin
around the buffer, since each diagnostics comes annotated with a
(line/col): LSP range spec that is reasonably expensive to
translate into Elisp point positions.
A much faster approach for such large lists is to first sort all the
objects containing ranges by their start lines and then do a
single pass of the buffer, moving lines by delta.
By much faster, I do mean spectacularly (100x) faster. A long python
with 7000 "ruff" diagnostics, before the change, typical editor
operations (add/delete words) are impossible.
14053 84% - jsonrpc-connection-receive
14052 84% - #<byte-code-function B94>
14052 84% - apply
14052 84% - eglot-handle-notification
14052 84% - applyn
14052 84% - #<byte-code-function 6DB>
14052 84% - eglot--flymake-handle-push
12295 74% - eglot--flymake-make-diag
12218 73% + eglot-range-region
50 0% + eglot--check-object
12 0% plist-member
3 0% flymake-make-diagnostic
After the change:
99 1% - jsonrpc-connection-receive
99 1% - #<byte-code-function 0EE>
99 1% - apply
99 1% - eglot-handle-notification
99 1% - apply
99 1% - #<byte-code-function E84>
99 1% - eglot--flymake-handle-push
99 1% - eglot--call-with-ranged
99 1% - #<byte-code-function 2C6>
99 1% - eglot-move-to-utf-16-linepos
99 1% line-end-position
* lisp/progmodes/eglot.el (eglot-move-to-linepos-function):
Forward declare.
(eglot--call-with-ranged, eglot--collecting-ranged): New helpers.
(eglot--flymake-report-1)
(eglot--imenu-SymbolInformation): Use eglot--collecting-ranged.
(eglot--imenu-DocumentSymbol): Could use eglot--collecting-ranged.
* etc/EGLOT-NEWS: Mention it
This documents how to use LSP multiplexer programs like Rassumfrassum
to connect multiple language servers to a single buffer.
* doc/misc/eglot.texi (Top): Add "Multi-server support" menu entry.
(Multi-server support): New chapter.
(Using Rassumfrassum, Design rationale): New sections documenting
how to use the Rassumfrassum multiplexer program with Eglot, with
practical examples for C++, Python, and multi-language files.
(Performance): Mention Rassumfrassum as solution for JSONRPC traffic
performance issues.
(Reporting bugs): Add guidance for troubleshooting multiplexer-related
bugs. Improve project description guidance. Fix various typos.
* lisp/progmodes/eglot.el (eglot-server-programs): Add a couple
of rass entries.
* etc/EGLOT-NEWS: Announce support for LSP server multiplexers via
Rassumfrassum.
* lisp/term/xterm.el (xterm-update-cursor): New user option.
(xterm--init): Use it.
(xterm--post-command-hook): New function for all xterm
functionality installed in 'post-command-hook'.
(xterm--init-frame-title): Install it.
(xterm--init-update-cursor, xterm--set-cursor-type)
(xterm--update-cursor-type, xterm--update-cursor-color): New
functions.
(xterm--cursor-type-to-int): New constant.
* doc/emacs/display.texi (Cursor Display):
* etc/NEWS: Document the new feature.
* lisp/emacs-lisp/package.el (package-isolate): Fetch missing
packages and make them available in the new Emacs process, but
not the current one.
* etc/NEWS: Mention change.
* lisp/emacs-lisp/package.el (package-review-policy)
(package-review-directory, package-review-diff-command): Add
new options.
(package--review-p): Add new function to consult
'package-review-policy'.
(package-review): Add new function.
(package-unpack): Use new functions.
(package-install-from-archive): Return package descriptors of
installed packages.
(package-download-transaction): Handle failure of a incomplete
transaction.
(package-install): Report if a package installation failed.
(package-upgrade): Anticipate a failed package transaction by
not deleting a package beforehand.
(package-install-from-buffer): Handle the failure to download
dependencies or a rejection during the actual package review.
* doc/emacs/package.texi: Document feature.
* etc/NEWS: Mention new feature.
The only alternative I've found is
M-: ( i n f o " ( e g l o t ) " ) RET
which isn't really very user friendly.
* lisp/progmodes/eglot.el (eglot-manual): Unobsolete.
* doc/misc/eglot.texi (Top): Mention M-x eglot-manual.
* etc/EGLOT-NEWS: Mention unobsoletion.
* doc/misc/tramp.texi (External methods): Mention, how external
methods are used for multi-hops.
(Ad-hoc multi-hops): Change requirement of method.
* doc/misc/trampver.texi:
* lisp/net/trampver.el: Change version to "2.8.2-pre".
* etc/NEWS: External Tramp methods can be used in multi-hops.
Presentational fixes and improvements.
* lisp/net/tramp-sh.el (tramp-sh-handle-copy-directory): Check for
`tramp-method-out-of-band-p' explicitly. Don't flush directory
properties.
(tramp-method-out-of-band-p): There shouldn't be a multi-hop.
* lisp/net/tramp-smb.el (tramp-smb-handle-copy-directory): Don't
flush directory properties.
* lisp/net/tramp.el (tramp-methods): Adapt docstring.
(tramp-barf-if-file-missing)
(with-parsed-tramp-file-name): Adapt debug spec.
(tramp-skeleton-copy-directory): Flush directory properties.
(tramp-add-hops): Check for `tramp-login-args' property.
* src/window.c (Fwindow_cursor_info): New function.
(syms_of_window): Defsubr it.
* doc/lispref/windows.texi (Window Point): Document it.
* etc/NEWS: Announce new function. (Bug#80023)
* lisp/frame.el (clone-frame): Set the frame parameter
'cloned-from'.
(undelete-frame): Set the frame parameter 'undeleted'.
* src/frame.c (syms_of_frame): <Qcloned_from> <Qundeleted>: New
DEFSYM.
(syms_of_frame): Add 'Qcloned_from' and 'Qundeleted' to
'frame_internal_parameters'.
* doc/lispref/frames.texi: Document these frame parameters.
* etc/NEWS: Announce the new frame parameters.
The direct cause of the problem in the bug report is that when
user runs treesit-font-lock-recompute-features to add the
emacs-devel feature in c-ts-mode's mode hook, the added query
for emacs-devel aren't compiled.
This change consists of two parts:
1. The immediate fix: validate and compile queries in
treesit-font-lock-recompute-features.
2. To make it more fool-proof, change treesit-font-lock-rules
back to compile the queries and make
treesit--compile-query-with-cache support compiled queries. This
way, as long as the query goes through treesit-font-lock-rules,
it'll be compiled eventually and not cause slow-down. I had to
add some c-level functions, but they're kind of overdue anyway,
so I don't have any problem adding them to the API.
* lisp/treesit.el (treesit--compile-query-with-cache): Support
compiled queries.
(treesit-font-lock-rules): Compile the queries (but not
eagerly).
(treesit-font-lock-recompute-features): Validate and compile
queries.
(treesit-major-mode-setup): Remove call to
treesit-validate-and-compile-font-lock-rules since it's now
called in treesit-font-lock-recompute-features.
* src/treesit.c (Ftreesit_query_eagerly_compiled_p):
(Ftreesit_query_source): New functions.
* doc/lispref/parsing.texi (Pattern Matching): Add manual
entries for the new functions.
