It looks like these are not available on some versions of GNU/Linux,
breaking the build.
* configure.ac: Also check for needed seccomp macros.
* src/emacs.c (SECCOMP_USABLE): New macro.
(usage_message, main, standard_args): Use it.
* src/xdisp.c (note_mouse_highlight): Don't attempt to highlight
tab-bar buttons.
(note_tab_bar_highlight): Function deleted: it had no effect on
display of tab-bar buttons.
(tab_bar_item_info): Mention all arguments in the commentary.
(get_tab_bar_item): Don't pay attention to mouse-highlight
information; instead, compare the button's index with the one
recorded in f->last_tab_bar_item.
(handle_tab_bar_click): Don't attempt to show tab-bar buttons in
pressed or released state: that isn't supported. Determine
whether to generate a tab-bar button click based on DOWN_P
argument, not on mouse-highlight, which has no effect on tab-bar
display. (Bug#47581)
When passing this option on GNU/Linux, Emacs installs a Secure
Computing kernel system call filter. See Bug#45198.
* configure.ac: Check for seccomp header.
* src/emacs.c (usage_message): Document --seccomp option.
(emacs_seccomp): New wrapper for 'seccomp' syscall.
(load_seccomp, maybe_load_seccomp): New helper functions.
(main): Potentially load seccomp filters during startup.
(standard_args): Add --seccomp option.
* lisp/startup.el (command-line): Detect and ignore --seccomp option.
* test/src/emacs-tests.el (emacs-tests/seccomp/absent-file)
(emacs-tests/seccomp/empty-file)
(emacs-tests/seccomp/file-too-large)
(emacs-tests/seccomp/invalid-file-size): New unit tests.
(emacs-tests--with-temp-file): New helper macro.
* etc/NEWS: Document new --seccomp option.
* src/image.c: (init_svg_functions) [WINDOWSNT]: Define and load
rsvg_handle_set_stylesheet from the DLL for librsvg > 2.48.
(lookup_image): Use xmalloc.
* src/pdumper.c (thaw_hash_tables): Now conditioned by
HAVE_PDUMPER.
(init_pdumper_once): No-op unless HAVE_PDUMPER. Reported by
Nikolay Kudryavtsev <nikolay.kudryavtsev@gmail.com>.
* src/dispextern.h (struct image): Add font details required for the CSS.
* src/image.c (free_image): Free the font family string.
(search_image_cache):
(uncache_image): Make image caching understand the font details.
(lookup_image): Handle the font details when generating the image and
looking up the cache.
(svg_css_length_to_pixels): Handle 'em' when we know the font size.
(svg_load_image): Generate the CSS and apply it to the SVG.
(enum svg_keyword_index):
(svg_format):
(syms_of_image): Add ':css' attribute.
* doc/lispref/display.texi (SVG Images): Add details of new svg image
attributes.
The primary idea is to allow `kill-buffer' and `kill-emacs' to
complete even if Emacs has trouble unlocking the buffer's file.
* lisp/userlock.el (userlock--handle-unlock-error): New function, call
`display-error'.
* src/filelock.c (unlock_file_body): New function, do what
'unlock_file' used to.
(unlock_file_handle_error): New function, call
`userlock--handle-unlock-error' with the captured error.
(unlock_file): Handle `file-error' conditions by calling the handler
defined above.
* test/src/filelock-tests.el (filelock-tests-kill-buffer-spoiled):
(filelock-tests-unlock-spoiled): Modify to test new behavior.
This patch adjust the x position of preeditarea with both left fringe
and left margin, which prevents IME preedit box (such as fcitx) from
placing at the wrong position in GUI emacs.
* src/xfns.c (xic_set_preeditarea): Adjust X for left margin width.
(Bug#47377)
* src/editfns.c (Freplace_buffer_contents): Avoid undefined
behavior with competing side effects in parallel subexpressions.
Problem reported by Apple clang version 12.0.0 (clang-1200.0.32.29).
This happened with minibuffer-follows-selected-frame set to t.
* doc/emacs/mini.texi (Basic Minibuffer): State where a command's action takes
place when a minibuffer's frame has been deleted.
* lisp/window.el (window--before-delete-windows, record-window-buffer): Take
into account that minibuffers are now recorded on w->prev_buffers field.
* src/fns.c (merge_c): New version of `merge' taking a C function, rather than
a Lisp function as the comparison function.
* src/frame.c (do_switch_frame): Pass arguments sf and for_deletion to
move_minibuffers_onnto_frame.
* src/lisp.h (top level): Declare merge_c and
move_minibuffers_onto_selected_frame.
* src/minibuf.c (MB_frame): New Lisp_Object recording the minibuffer's frame.
(choose_minibuf_frame): Remove all code except that which sets minibuf_window
to the current frame's minibuffer.
(minibuffer_ent_greater): New comparison function, passed to merge_c.
(zip_minibuffer_stacks): New function.
(move_minibuffers_onto_frame): Renamed from `move_minibuffer_onto_frame' given
two arguments, the old frame and for_deletion, and simplified. Minibuffers
are now stacked in the mini-window's ->prev_buffers field.
(read_minibuf): Several detailed amendments.
(exp_MB_frame): New Lisp_Object, the expired minibuffer's frame.
(read_minibuf_unwind): Search for the expired minibuffer's frame, rather than
taking it from (unreliable) variables. Switch temporarily to this frame for
tidying up operations.
(minibuffer_unwind): New function which pops a stacked minibuffer.
(syms_of_minibuf): Call staticpro for the two new Lisp variables.
* src/window.c (Fset_window_configuration): Don't record minibuffers with
record-window-buffer.
* src/xdisp.c (gui_consider_frame_title): Remove redundant Fselect_window,
which caused an unwanted frame switch. Amend the arguments to
format_mode_line_unwind_data to match.
* etc/NEWS: Mention changes to 'while-no-input-ignore-events'.
* src/keyboard.c (kbd_buffer_store_buffered_event): Handle also
Qfile_notify and Qdbus_event as ignore_event. (Bug#47205)
* doc/lispref/text.texi (Buffer Contents): Mention text properties
in the `buffer-string' documentation.
* src/editfns.c (Fbuffer_string): Mention text properties in the
doc string (bug#47220).
(cherry picked from commit 60af754170)
* doc/lispref/text.texi (Buffer Contents): Mention text properties
in the `buffer-string' documentation.
* src/editfns.c (Fbuffer_string): Mention text properties in the
doc string (bug#47220).
* lisp/frame.el (set-frame-property--interactive): Internal function to
produce the interactive form of `set-frame-width' and
`set-frame-height'. Offer the current size as default. (Bug#9970)
* src/frame.c (Fset_frame_height): Modify to call
`set-frame-property--interactive'.
(Fset_frame_width): Modify to call `set-frame-property--interactive'.
* doc/lispref/frames.texi (Frame Size): Update the manuals.
* etc/NEWS: Advertise the change (bug#9970).
* src/dispnew.c (update_window): Make sure all glyph rows below
the last visible one are marked as invalid, even when the loop
which "updates the rest of the lines" didn't examine the last
visible row. (Bug#47093)
* src/sysdep.c (sigsegv_stack): Increase size to 64 KiB and align
it to max_align_t. This copies from Gnulib’s c-stack.c, and works
around a portability bug in draft glibc 2.34, which no longer
defines SIGSTKSZ when _GNU_SOURCE is defined.
* lisp/faces.el (help-key-binding): New face.
* lisp/help.el
(help-for-help): Rename from 'help-for-help-internal'. Use
'substitute-command-keys' syntax.
(help): Make into alias for 'help-for-help'.
(help-for-help-internal): Make into obsolete alias for
'help-for-help'.
(help--key-description-fontified): New function to add the
'help-key-binding' face.
(help-key-description, substitute-command-keys)
(describe-map-tree, help--describe-command)
(help--describe-translation, describe-map):
* lisp/help-fns.el (help-fns--key-bindings, describe-mode):
Use above new function.
* lisp/isearch.el (isearch-help-for-help-internal): Use
`substitute-command-keys' syntax.
* lisp/help-macro.el (make-help-screen): Use
'substitute-command-keys' and 'help--key-description-fontified'.
Simplify.
* src/keymap.c (describe_key_maybe_fontify): New function to add
the 'help-key-binding' face to keybindings.
(describe_vector): Use above new keybinding.
(syms_of_keymap) <Qfont_lock_face, Qhelp_key_binding>: New
DEFSYMs.
(fontify_key_properties): New static variable.
* lisp/tooltip.el (tooltip-show): Avoid overriding faces in
specified tooltip text.
* test/lisp/help-tests.el (with-substitute-command-keys-test):
Don't test for text properties.
(help-tests-substitute-command-keys/add-key-face)
(help-tests-substitute-command-keys/add-key-face-listing):
New tests.
