* lisp/vc/vc-sccs.el (vc-sccs-responsible-p):
* lisp/vc/vc-rcs.el (vc-rcs-responsible-p):
* lisp/vc/vc-cvs.el (vc-cvs-responsible-p): Make the previous
change work with relative file names, too.
* lisp/vc/vc-sccs.el (vc-sccs-responsible-p):
* lisp/vc/vc-rcs.el (vc-rcs-responsible-p):
* lisp/vc/vc-dav.el (vc-dav-responsible-p):
* lisp/vc/vc-cvs.el (vc-cvs-responsible-p): Return a file name
instead of t when we get a match (which is what
vc-backend-for-registration expects) (bug#51800).
* lisp/progmodes/python.el (python-forward-sexp-function): Move from
the "Flymake integration" subsection to the "Navigation" subsection,
so that the option is sorted into the 'python' group rather than the
'python-flymake' group (bug#51807).
This fixes bug #51814.
* lisp/follow.el (follow-scroll-down): Do away with the optimization of doing
vertical-motion over only one window. Instead move over all windows, to
checck for being close to point-min, and setting point accordingly.
* src/callproc.c (emacs_spawn) <fork_done>: Define the label only
if USABLE_POSIX_SPAWN is defined, to avoid a compiler warning.
(cherry picked from commit a8fc080851)
posix_spawn is less error-prone than vfork + execve, and can make
better use of system-specific enhancements like 'clone' on Linux. Use
it if we don't need to configure a pseudoterminal.
Backported from commit a60053f836.
Unlike that commit, only define USABLE_POSIX_SPAWN on macOS, because
there posix_spawn is much faster than vfork.
Don't merge to master.
* configure.ac (HAVE_SPAWN_H, HAVE_POSIX_SPAWN)
(HAVE_POSIX_SPAWN_FILE_ACTIONS_ADDCHDIR)
(HAVE_POSIX_SPAWN_FILE_ACTIONS_ADDCHDIR_NP)
(HAVE_POSIX_SPAWNATTR_SETFLAGS, HAVE_DECL_POSIX_SPAWN_SETSID): New
configuration variables.
* src/callproc.c (USABLE_POSIX_SPAWN): New configuration macro.
(emacs_posix_spawn_init_actions)
(emacs_posix_spawn_init_attributes, emacs_posix_spawn_init): New
helper functions.
(emacs_spawn): Use posix_spawn if possible.
(cherry picked from commit a60053f836)
* lisp/mh-e/mh-thread.el (mh-thread-current-indentation-level)
(mh-thread-find-children): Fix off-by-one error by using
'mh-scan-field-from-start-offset' directly, as
'mh-thread-parse-scan-line' does. Previously, these functions would
incorrectly consider the "date note" column as part of the thread
indenting. Since that column is almost always a Space character, that
almost always worked.
(mh-thread-ancestor): Update caller.
* test/lisp/mh-e/mh-thread-tests.el: New unit tests for affected code.
* lisp/mh-e/mh-scan.el (mh-msg-num-width-to-column): Fix doc string typo.
* src/fileio.c (restore_window_points): Reverse commit
974192413f and instead replace a < by a <=.
This ensures that if w->mpoint is at the top of the middle region being
replaced, it gets adjusted and stays at the top after the reinsertion.
Where c-record-found-types gets "bound" to itself, we postpone the calling of
c-fontify-new-type on possible new found types until these are confirmed by
the return from the function tentatively finding these types, for exmaple
c-forward-<>-arglist. We check this "binding" by testing the value of
c-record-found-types.
Correct the background fontification algorithm.
* lisp/progmodes/cc-engine.el (c-record-found-types): Move the definition to
earlier in the file.
(c-add-type-1): Check additionally c-record-found-types is nil before calling
c-fontify-new-found-type.
(c-forward-<>-arglist, c-forward-type): On return from a function which
collects found types in c-record-found-types, call c-fontify-new-found-types
for each such type.
* lisp/progmodes/c-fonts.el (c-force-redisplay): Actually fontify the new
found type.
(c-fontify-new-found-type): Test for font-lock-mode being enabled. Remove the
spurious condition on the `fontified' text property being nil before causing
c-force-redisplay to get called.
I changed some "#ifdef"s to "#if defined"s by mistake, so I reverted them.
* src/alloc.c: Reverted.
(garbage_collect): Reverted.
* src/emacs.c (main): Reverted.
* src/image.c (xpm_load_image): Reverted.
(image_disable_image): Reverted.
(image_build_heuristic_mask): Reverted.
* src/xwidget.c (run_file_chooser_cb): New function that runs
a nested event loop instead of acting asynchronously.
(Fmake_xwidget): Attach file chooser signal.
This is no longer required, as we rely on X to position
xwidgets now. It also makes resizing Emacs frames slightly
slower.
* src/emacsgtkfixed.c (EMACS_FIXED_GET_CLASS)
(struct GtkFixedPrivateL)
(emacs_fixed_gtk_widget_size_allocate)
(emacs_fixed_class_init) [HAVE_XWIDGETS]: Remove unused code.
This fixes bug #51776.
* src/fileio.c (restore_window_points): Restore a w->mpoint even when that
marker originally pointed into the unchanged area near BOB or EOB. This
prevents that window's point being moved a long way from its starting place
due to the removal of the central part of the buffer by insert_file_contents.
