* lisp/bindings.el (esc-map): Bind M-SPC to cycle-spacing instead of
just-one-space.
* lisp/simple.el (delete-space--internal): New function.
(delete-horizontal-space): Use it.
(delete-all-space): New command.
(just-one-space): Implement on its own instead of calling
cycle-spacing with a special flag.
(cycle-spacing--context): Make it a plist instead of a list. Adapt
docstring accordingly.
(cycle-spacing-actions): New user option.
(cycle-spacing): Rewrite so that it performs the actions in
cycle-spacing-actions instead of the hard-coded ones.
* doc/emacs/killing.texi (characters): Mention and add a variable
index entry for cycle-spacing-actions.
* etc/NEWS: Document that M-SPC is now cycle-spacing instead of
just-one-space.
* src/keyboard.c (kbd_buffer_get_event):
* src/xterm.c (handle_one_xevent): Check that the event frame is
still live after calling arbitrary Lisp code.
* src/haiku_support.cc:
* src/haiku_support.h: Stop including pthread.h and specpdl_ref.
* src/haikumenu.c (run_menu_bar_help_event): Ignore invalid help
events instead of aborting.
* xterm.c (x_get_scroll_valuator_delta): Set valuator_return to
NULL if no valuator was found.
(handle_one_xevent): Assume pointer axes might've changed if no
scroll valuator was found but valuators were set when handling
motion events.
* lisp/isearch.el (minibuffer-lazy-highlight-setup): Modify hooks
buffer-locally, so that recursive minibuffers are not affected by the
special behavior of lazy-highlight. Also make
'isearch-filter-predicate' buffer-local, so that isearch in the
minibuffer is not affected by the region filter (bug#55110).
* lisp/textmodes/css-mode.el (css--selector-regexp): Recognize some
more SCSS selectors.
* test/lisp/textmodes/css-mode-resources/scss-selectors.txt: Add tests
for them.
* lisp/net/tramp-fuse.el (tramp-fuse-remove-hidden-files): New defsubst.
(tramp-fuse-handle-directory-files)
(tramp-fuse-handle-file-name-all-completions): Use it.
* src/haikuselect.c (Fhaiku_roster_launch): Return
`already-running' if no PID is available since the target
application is already running.
(syms_of_haikuselect): New defsym.
* lisp/international/fontset.el (script-representative-chars): Add
tai-le and tai-lue scripts.
(otf-script-alist): Fix the name of tai-le.
* src/w32font.c (syms_of_w32font): Fix typos in some script symbol
names.
* lisp/language/indian.el ("Syloti Nagri"): New language environment.
Add composition rules for Syloti Nagri. Add sample text and input
method.
Improve composition rules for Kaithi, Tirhuta, Sharada and Siddham.
* lisp/international/fontset.el (script-representative-chars)
(setup-default-fontset): Support Syloti Nagri.
* lisp/leim/quail/indian.el ("syloti-nagri"): New input method.
* etc/HELLO: Add two Syloti Nagri greetings.
* etc/NEWS: Announce the new language environment and its
input method.
* lisp/help-fns.el (describe-keymap): Suggest symbol at point
if it is a keymap. (Bug#55393)
* etc/NEWS: Announce change in behavior of 'describe-keymap'.
* src/xsettings.c (xg_settings_key_valid_p): New function.
(apply_gsettings_font_antialias): Test that `font-aliasing' is
actually available. (bug#55416)
* lisp/emacs-lisp/check-declare.el (check-declare-directory): Use
'directory-files-recursively' instead of running Find and Grep in
a subprocess. (Bug#55386)
* lisp/vcursor.el (vcursor-bind-keys, vcursor-key-bindings)
(vcursor-other-window): Drop OEmacs support. OEmacs was "a
version of GNU Emacs V19.19" that worked "under plain MSDOS,
Windows, or DESQview/X".
