On this platform, you cannot reliably malloc objects containing
values of type pthread_mutex_t or pthread_cond_t, since malloc
guarantees only 8-byte alignment but these two types require
16-byte alignment. See GCC bug 115750
<https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115750> reported by
Sam James and Emacs bug 79936 <https://bugs.gnu.org/79936>
reported by John Paul Adrian Glaubitz.
* configure.ac (ALIGNOF_MAX_ALIGN_T, ALIGNOF_PTHREAD_COND_T)
(ALIGNOF_PTHREAD_MUTEX_T) [HAVE_PTHREAD]: New C macros.
* src/systhread.c (sys_mutex_init, sys_mutex_lock)
(sys_mutex_unlock, sys_cond_init, sys_cond_wait)
(sys_cond_signal, sys_cond_broadcast, sys_cond_destroy):
Use SYTHREAD_ALIGN_PTR to convert sys_mutex_t and sys_cond_t to
pthread_mutex_t and pthread_cond_t, since runtime conversion is
needed on GNU/Linux HPPA.
* src/systhread.h (SYSTHREAD_ALIGN_ROOM, SYSTHREAD_ALIGN_PTR):
New macros, which affect the generated code only on
unusual platforms like GNU/Linux HPPA.
(sys_mutex_t, sys_cond_t) [HAVE_PTHREAD]: Use them.
* src/dbusbind.c (XD_DBUS_VALIDATE_BUS_NAME)
(XD_DBUS_VALIDATE_PATH, XD_DBUS_VALIDATE_INTERFACE)
(XD_DBUS_VALIDATE_MEMBER): Make these expand to single statements
when they are followed by ‘;’. All uses changed.
* lisp/vc/vc-hooks.el (vc-file-setprop): Use cl-pushnew.
(vc--repo-setprop, vc--repo-getprop, vc--repo-clearprops): New
functions.
* lisp/vc/vc.el (vc--incoming-revision): Cache incoming
revisions.
* src/fns.c (Fput): State that VALUE is returned.
* lisp/treesit.el (treesit-auto-install-grammar): Use the first
writable directory from 'treesit-extra-load-path' for values
'always', 'ask', 'ask-dir' (bug#79862).
* src/treesit.c (syms_of_treesit): Extend docstring.
* lisp/treesit.el (treesit-auto-install-grammar): Add the value 'ask-dir'.
(treesit-ensure-installed): When 'treesit-auto-install-grammar' is
'ask' or 'ask-dir', ask for the directory to install the grammar library
using the first writable directory of 'treesit-extra-load-path' as default.
Also add the provided directory to 'treesit-extra-load-path' afterwards.
* src/treesit.c (treesit-extra-load-path): In the docstring
mention the fact that the first directory is special (bug#79862).
Problem reported by John Paul Adrian Glaubitz (bug#79876).
* src/data.c (Fash): Don’t assume stdc_leading_zeros, which
returns an unsigned integer of unspecified width, returns
a value narrower than EMACS_INT. Also, don’t munge the code to
worry about stdc_leading_zeros (0); unlike GCC’s __builtin_clz,
stdc_leading_zeros works fine on 0. And use a temporary to
avoid a cast.
Problem reported by Helmut Eller (bug#79886).
* src/lisp.h (USE_LSB_TAG): Adjust to alignas changes.
(alignas): For GCC and Clang, prefer __attribute__ ((__aligned__ (A)))
to alignas (A) even if the compiler claims to support the latter.
This works around a bug in GCC 14 i386 C23 alignas.
No need to worry about whether __alignas_is_defined is defined.
We dropped support for MSVC long ago, and nowadays only support
MinGW for the MS-Windows builds of Emacs.
* src/w32term.h:
* src/w32fns.c:
* src/w32.c:
* nt/inc/sys/socket.h:
* nt/inc/stdalign.h:
* nt/inc/ms-w32.h: Remove MSVC-specific code and preprocessor
conditions.
* nt/inc/ms-w32.h: Don't redirect Posix functions to MS _FOO
equivalents, as MinGW headers do that nowadays better, not
necessarily via functions, and do not disable that when __STDC__
is defined.
Port to planned glibc 2.43 (scheduled for February 2026),
which will support qualifier-generic standard functions; see:
https://sourceware.org/git/?p=glibc.git;a=commit;h=cd748a63ab1a7ae846175c532a3daab341c62690
For example, strchr (P, C) will return pointer to const if P is
pointer to const. The idea is to catch dumb programming errors when a
program mistakenly uses strchr to convert a pointer to const
to an unrestricted pointer. This feature is required by C23,
and will be enabled by default in GCC 15.
* src/callint.c (Fcall_interactively):
Respect constness of pointer when calling memchr.
* src/gtkutil.c (xg_get_font):
2nd arg is char *, not const char *.
* src/xfaces.c (parse_float_color_comp): Return bool, not double.
New arg DST. All callers changed. This makes it easier for
callers to use char const *.
(parse_color_spec): Respect constness of pointer when calling strchr.
* lisp/cus-start.el: Make 'abbrev-mode' customizable.
* doc/emacs/abbrevs.texi (Abbrev Concepts):
* etc/NEWS:
* src/buffer.c (syms_of_buffer): <abbrev-mode>: Document
enabling Abbrev mode by default in all buffers by customizing
'abbrev-mode' to a non-nil value.
* java/org/gnu/emacs/EmacsNative.java (setEmacsParams): New arg
UIMODE.
(sendConfigurationChanged): New args DETAIL and UI_MODE.
* java/org/gnu/emacs/EmacsNoninteractive.java (main1): Provide
an undefined UI mode.
* java/org/gnu/emacs/EmacsService.java (EmacsService): New field
uiMode.
(onCreate): Initialize this field at start-up and provide the
same to setEmacsParams.
(onConfigurationChanged): If the UI mode has been altered,
generate a configuration changed event to match.
* src/android.c (android_ui_mode): New variable.
(setEmacsParams): New argument UI_MODE. Initialize the same
from this variable.
* src/androidgui.h (enum android_configuration_changed): New
enum.
(struct android_configuration_changed_event): New field
`DETAIL'. Convert fields providing specifics into a union of
display density information and a UI mode integer.
* src/androidterm.c (handle_one_android_event): Handle both
manners of configuration change events.
(android_term_init): Initialize Vtoolkit_theme from UI mode
provided at start-up.
* src/frame.c (syms_of_frame): Always define Vtoolkit_theme.
Define Qtoolkit_theme_set_functions.
* src/gtkutil.c (xg_update_dark_mode_for_all_displays):
* src/w32term.c (w32_read_socket): Generate special toolkit
theme events, rather than executing hooks directly within the
read_socket callback.
* src/keyboard.c (kbd_buffer_get_event)
<TOOLKIT_THEME_CHANGED_EVENT>: Run Qtoolkit_theme_set_functions
and set Vtoolkit_theme from event->ie.arg.
* src/termhooks.h (enum event_kind): New event
TOOLKIT_THEME_CHANGED_EVENT.
* src/window.c (window_set_parent_and_normal_sizes): When
assigning normal sizes in a combination, take the direction from
its parent's 'horizontal' slot and not from that of the first
window in the combination.
Assuming ATTRIBUTE_PURE means that the function must return,
a few more functions that should not be declared with ATTRIBUTE_PURE.
The GCC manual (and even the C23 standard, with [[reproducible]])
is not clear about this, and it’s better to be safe.
* src/bignum.h (mpz_get_d_rounded):
* src/lisp.h (bignum_to_double):
No longer pure, as it does not return if memory is exhausted.
* src/fns.c (Fproper_list_p): No longer pure, as it does not
return if the user quits.
* src/gnutls.c (Fgnutls_errorp): No longer pure, as it does not
return if it runs into an eassert failure in XSYMBOL_WITH_POS via EQ.
* src/lisp.h (bignum_to_intmax, bignum_to_uintmax, bignum_bufsize):
No longer pure, as it does not return if it runs into an
eassert failure in XBIGNUM via xbignum_val.
Problem for mpz_get_d_rounded reported by Helmut Eller in:
https://lists.gnu.org/r/emacs-devel/2025-11/msg00795.html
* lib-src/make-docfile.c (DEFUN_pure): New constant.
(write_globals, scan_c_stream): Support "attributes: pure".
* src/bignum.h (mpz_get_d_rounded):
* src/data.c (Fsymbolp, Fmodule_function_p, Fintegerp, Fnumberp):
* src/lisp.h (bignum_to_double, bignum_to_intmax)
(bignum_to_uintmax, bignum_bufsize):
Now pure, not const, since they depend on current state.
For example, Fsymbolp now inspects symbols_with_pos_enabled,
and the bignum functions inspect bignum contents in memory.
* src/data.c (Feq):
* src/xfaces.c (Fface_attribute_relative_p):
No longer const, since they might abort when debugging.
* src/pdumper.h (pdumper_object_p, pdumper_cold_object_p)
(pdumper_find_object_type, pdumper_object_p_precise):
These are not const functions. But there is no need to declare
them to be pure, either, as they’re inline so the compiler can
figure it out.
* src/keyboard.c (make_lispy_position): When calculating a
position in the left margin skip any scroll bar on the left of
the associated window (Bug#79846).
* src/conf_post.h: Avoid redirecting '*printf' functions if
'OMIT_CONSOLESAFE' is defined to 1.
* nt/cmdproxy.c:
* nt/ddeclient.c: Define 'OMIT_CONSOLESAFE' to 1 to avoid
redirecting '*printf functions' to stdio-consolesafe replacements.
* nt/Makefile.in (LIBS_ADDPM): Add -lgnu to link 'addpm' against
Gnulib. (Bug#79855)
* src/keyboard.c (adjust_point_for_property): Handle 'display'
property on the same text as 'invisible' property the same as the
overlay with a 'display' property. (Bug#79787)
* src/keyboard.c (adjust_point_for_property): Handle the case
where invisible text has an overlay over it with a replacing
'display' property, which leaves some "trace" of the invisible
text on display. (Bug#79787)
MSVCRT implementation of stdio functions which output
characters one by one fails for CJK double-byte encodings.
Gnulib provides replacement functions which work around
those bugs. This change makes Emacs and lib-src programs
use the replacements when Emacs is linked against MSVCRT.
* src/conf_post.h (fwrite, fprintf, printf, vfprintf, vprintf)
[WINDOWSNT]: Redirect to Gnulib replacements when Emacs is linked
against MSVCRT (as opposed to UCRT). Suggested by Bruno Haible
<bruno@clisp.org>.
* src/process.c (wait_reading_process_output): Process status
changes of sub-processes when called with read_kbd zero and some
"keyboard input" is available, but no output from any sub-process.
(Bug#79777)
* src/xdisp.c (reset_message_log_need_newline): New function.
* src/lisp.h: Add prototype of 'reset_message_log_need_newline'.
* src/print.c (print_error_message): Call
'reset_message_log_need_newline' to prevent message3 from
outputting a newline after "user-error:". (Bug#79840)
* src/android-asset.h (AAssetManager_open): Initialize desc and
asset to NULL, lest `desc' be accessed uninitialized if C_NAME
does not exist in the directory tree.
* src/xfaces.c (get_lface_attributes): Avoid crashes if F is NULL.
This happens when 'face_inheritance_cycle' is for some reason
called for the default attributes of a face (which are applicable
to future frames). We avoid the crashes by not consulting face
remapping in that case, since face remapping is buffer-local, and
therefore cannot possibly affect face defaults. (Bug#79790)
This fixes problems in some cases of out-f-tree builds
(bug#79694, bug#62099, bug#64806).
The use of true names in `load-history` dates back to to commits
33d74677e7 and 6bb6da3ec1 by Alan Mackenzie <acm@muc.de> in
May 24 2006, but that was reverted by Paul Eggert's commit
dff4f9c759 on Sep 18 2019.
* lisp/startup.el (command-line): Don't `file-truename` `lisp-directory`.
* src/lread.c (syms_of_lread) <load-history>: Adjust docstring,
to reflect the fact that the files there aren't "true names".
* doc/lispref/loading.texi (Hooks for Loading): Adjust accordingly.
Also massage the text to reflect the fact that nowadays features are
more common than file names as arguments to `with-eval-after-load`.
* doc/misc/eglot.texi (Eglot Features): Add comma after @xref.
* msdos/sed2v2.inp (GNULIB_ISSYMLINK): Define to 1.
* msdos/sedlibmk.inp (HAVE_RANDOM_H): Undefine, in line with its
deletion from gnulib.mk.
(GL_GNULIB_STRINGEQ): Define to 1.
* src/msdos.c (careadlinkat): NULL terminate at the end of the
data written, not one character beyond the same.
* src/timefns.c (Fdecode_time, Fencode_time)
(Fcurrent_time_string): Do not bother to preserve errno around
tzfree calls, as Gnulib now does that for us.
* admin/merge-gnulib (GNULIB_MODULES): Add stringeq.
With current Gnulib it is already present as in indirect dependency;
listing it here because Emacs now depends on it directly.
* lib-src/ebrowse.c, lib-src/etags.c:
(streq): Remove, as Gnulib defines this now.
* lib/fseterr.c, lib/fseterr.h, lib/issymlink.c, lib/issymlink.h:
* lib/issymlinkat.c, lib/stdio-consolesafe.c, lib/string.c:
* m4/fseterr.m4, m4/gettext_h.m4, m4/stringeq.m4:
New files from Gnulib.
* src/conf_post.h (tzfree) [__ANDROID_API__ >= 35]: Remove.
* src/xsettings.c (store_config_changed_event, dpyinfo_valid)
(store_font_name_changed, store_tool_bar_style_changed): Tweak
preprocessor conditions to satisfy all builds without warnings.
Latest tree-sitter library throws a syntax error if the
predicate names in a query don't end with question mark. So we
made the following change:
:equal changed to :eq?
:match changed to :match?
:pred changed to :pred?
Old names are transparently converted to new names when
expanding patterns.
:match predicate can now take the regexp and the node in any
order: it'll figure out which is which automatically. This way
it works with current Emacs convention (regexp first), as well
as tree-sitter's match convention (regexp second).
* doc/lispref/parsing.texi (Pattern Matching): Update manuel to
use new predicate names.
* src/treesit.c:
(Ftreesit_pattern_expand):
(Ftreesit_query_expand):
(treesit_predicate_match):
(treesit_eval_predicates):
(syms_of_treesit): Use new predicate names.
* test/src/treesit-tests.el (treesit-query-api): Update test.
* src/xsettings.c (store_tool_bar_style_changed): Compile only
under HAVE_GSETTINGS.
(xg_get_system_dark_mode): Compile only under HAVE_GSETTINGS.
* src/gtkutil.c (xg_set_gtk_theme_dark_mode)
(xg_update_dark_mode_for_all_displays, xg_set_initial_dark_mode):
Only compile when HAVE_GSETTINGS is defined.
(xg_create_frame_widgets): Call 'xg_set_initial_dark_mode' only
under HAVE_GSETTINGS.
(xg_create_frame_outer_widgets): Remove unused code. Call
'xg_set_initial_dark_mode' only under HAVE_GSETTINGS.
* src/pgtkselect.c (pgtk_reply_selection_request): Remove unused
variable.
* doc/emacs/frames.texi (Frame Commands): Document
'alter-fullscreen-frames', which is a user option. Fix indexing.
* src/frame.c (syms_of_frame) <alter-fullscreen-frames>: Doc fix.
(Bug#79756)
* src/frame.c (adjust_frame_size): Honor new option
'alter-fullscreen-frames'.
(syms_of_frame) <alter-fullscreen-frames>: New option to
maintain consistent state when attempting to resize fullscreen
frames. Default to 'inhibit' for NS builds because these
resized the frame while leaving the 'fullscreen' parameter alone
(Bug#79704).
(syms_of_frame) <Qinhibit>: Define symbol.
* lisp/cus-start.el (standard): Add customization options for
'alter-fullscreen-frames'
* doc/lispref/frames.texi (Frame Size): Describe new option
'alter-fullscreen-frames'.
* etc/NEWS: Call out new option 'alter-fullscreen-frames'.
* src/gtkutil.h: Declare 'xg_set_gtk_theme_dark_mode',
'xg_update_dark_mode_for_all_displays',
'xg_set_initial_dark_mode'.
* src/gtkutil.c (xg_set_gtk_theme_dark_mode): Toggle PGTK dark mode.
(xg_update_dark_mode_for_all_displays): Toggle PGTK dark mode for all
displays.
(xg_set_initial_dark_mode): Determine PGTK dark mode preference and set.
(xg_create_frame_widgets): Set PGTK dark mode preference for widgets.
(xg_create_frame_outer_widgets): Set PGTK dark mode preference for outer
widgets.
* src/xsettings.h: Declare 'xg_get_system_dark_mode'.
* src/xsettings.c (something_changed_gsettingsCB): Update PGTK dark mode
setting.
(xg_get_system_dark_mode): Determine PGTK dark mode preference.
GSETTINGS_COLOR_SCHEME: Defined and set to "color-scheme".
* etc/NEWS: Document automatic dark mode toggling.
(Bug#79689)
* src/xfaces.c (face_inheritance_cycle)
(Finternal_set_lisp_face_attribute): Prevent infinite recursion if
a face is defined to inherit from itself (whaaat? how??!).
* src/window.c (window_set_parent_and_normal_sizes): New function.
(Fcombine_windows): Improve doc-string. Use wset_... functions.
Call window_set_parent_and_normal_sizes to fix a bug where it
failed to assign new normal sizes.
(Funcombine_window): Call window_set_parent_and_normal_sizes.
* src/xfaces.c (face_inheritance_cycle): New function.
(Finternal_set_lisp_face_attribute): Signal an error if the
':inherit' attribute of a face is modified in a way that will
cause it to inherit from itself. (Bug#79672)
* test/src/xfaces-tests.el (xfaces-test-circular-inheritance): New
test.
* etc/NEWS: Announce the incompatible change.
