* src/gtkutil.c (xg_frame_set_char_size): Skip resizing if the
target dimensions are unchanged for child frames with
'resize-mode' resize policy as well.
(1) Provide new option 'x-gtk-resize-child-frames' which allows
to either hide a child frame during resizing or asks GTK to
resize it "immediately". This is needed because desktops like
GNOME shell otherwise won't allow resizing child frames at all.
(2) Do not try to synchronize the position of a child frame
after moving it. Needed because the present implementation
introduces a 0.5 secs delay which makes dragging child frames
virtually impossible with Lucid and Motif toolkits on desktops
like GNOME shell that use invisible outer frame borders.
For further information see the thread starting with
https://lists.gnu.org/archive/html/emacs-devel/2020-01/msg00343.html
* src/frame.c (syms_of_frame): New symbol Qxg_frame_set_char_size_4.
* src/gtkutil.c (xg_frame_set_char_size): Hide child frame
during resizing when 'x-gtk-resize-child-frames' equals 'hide'.
* src/xfns.c (x_set_parent_frame, Fx_create_frame): Set
gtk_container_resize_mode to GTK_RESIZE_IMMEDIATE for child
frames when'x-gtk-resize-child-frames' equals 'resize-mode'.
(Fx_gtk_debug): New function to toggle interactive GTK debugging
from within Emacs.
(syms_of_xfns): New symbols Qhide and Qresize_mode.
(x-gtk-resize-child-frames): New option that allows to resize
child frames on desktops like GNOME shell (with the mutter WM)
that otherwise refuse to resize them.
* src/xterm.c (x_set_offset): Don't x_sync_with_move for child
frames, it makes moving child frames virtually impossible with
the Lucid and Motif toolkits.
* src/emacs-module.c (module_copy_string_contents): Fix incorrect
variable use. In this branch 'lisp_str_utf8' is always nil, so it
makes little sense to add it as error data.
* src/xterm.c (x_clear_under_internal_border): For GTK builds
have 'margin' count in the height of the tab bar to avoid that
tab bar and internal border are drawn on top of each other.
backtrace_eval_unrewind is used to temporarily reverse
let-bindings (it's called with a positive argument to reverse
bindings, and then a negative argument to re-apply them) by
backtrace--locals and backtrace-eval. For the SPECPDL_LET_DEFAULT and
SPECPDL_LET_LOCAL cases (which occur for let-bindings on buffer-local
variables), the code calls Fdefault_value and Fbuffer_local_value on
the symbol.
For symbols which are unbound at top-level, the first (with positive
argument) call to backtrace_eval_unrewind will set the symbol's value
to unbound (putting the current value in the specpdl's "old value"
slot). On the second (with negative argument) call,
backtrace_eval_unrewind attempts to retrieve the symbol's value with
Fdefault_value or Fbuffer_local_value, but that raises a void-variable
signal. This interrupts the restoration of the let-bindings, so any
other variables more recent on the stack will now have the wrong
value.
* src/data.c (default_value): Make non-static.
* src/lisp.h: Declare it.
* src/eval.c (backtrace_eval_unrewind): Replace the calls to
Fdefault_value and Fbuffer_local_value with default_value and
buffer_local_value, respectively. The latter do exactly the same as
the former, except if the symbol's value is Qunbound they just return
it instead of signaling void-variable.
This is an updated version of the patch by Dmitry Antipov
<dmantipov@yandex.ru> in
<https://debbugs.gnu.org/cgi/bugreport.cgi?bug=23386#43>.
Fixes Bug#23386
* src/dispextern.h (struct redisplay_interface): New member
default_font_parameter.
* src/xterm.h: Add prototype for x_default_font_parameter.
* src/xterm.c (x_redisplay_interface): Initialize
default_font_parameter member.
* src/xfns.c (x_default_font_parameter): Make non-static.
* src/w32term.h: Add prototype for w32_default_font_parameter
* src/w32fns.c (w32_default_font_parameter): Make non-static.
* src/w32term.c (w32_redisplay_interface): Initialize
default_font_parameter member.
* src/nsterm.m (ns_redisplay_interface): Add dummy
ns_default_font_parameter (there is currently only one possible font
backend on macOS). Initialize default_font_parameter member.
* src/frame.c (gui_set_font_backend): Recalculate default font using
RIF default_font_parameter to avoid crash when changing font backend.
* src/ftfont.c (fc_charset_table): Fix the value of the big-5
representative codepoint. Reported by Brian Schack
<bschack-cocoa@usa.net>. (Bug#40057)
* src/macfont.m (cf_charset_table): Adjust the comment.
* src/fontset.c (reorder_font_vector): Skip nil entries in the
loop that assigns scores to rfont_def's.
(fontset_compare_rfontdef): Cope with nil. This has the effect of
moving any nil entries to the end of the font-group, and avoids
crashing if an element other than the last in the font-group is
nil. (Bug#39892)
* src/w32term.c (w32_read_socket): If we get a WM_UNICHAR message
with a surrogate codepoint, assemble the corresponding character
code above the BMP from its UTF-16 encoding, communicated in two
consecutive WM_UNICHAR messages.
This was causing massive slowdown in redisplay when eg #xfe0f
(VARIATION SELECTOR-16) was present, as the cache ended up very large,
unused, and being recreated on every call to font_fill_lglyph_metrics
(Bug#39133).
* src/composite.c (fill_gstring_body): Hoist FONT_OBJECT_P check out
of loop. Calculate glyph code and check for FONT_INVALID_CODE before
calling font_fill_lglyph_metrics. Pass glyph code to it.
* src/font.c (font_fill_lglyph_metrics): Add code parameter, move
glyph code calculation up the call stack into fill_gstring_body.
* src/font.h: Adjust font_fill_lglyph_metrics prototype.
This prevents a crash when attempting to create a zero-width bitmap.
* src/fringe.c (Fdefine_fringe_bitmap): Check value of width,
signal an error if outside documented range (Bug#39662).
* src/gnutls.c (syms_of_gnutls) <libgnutls-version>: Define with
DEFVAR_LISP and add docstring, so that this variable will accessible by
help facilities.
Problem reported by Ken Sasaki (Bug#39672).
* src/fileio.c (Ffile_directory_p):
Encode filename before giving it to file_directory_p.
This fixes a typo introduced in
2019-09-18T02:18:14Z!eggert@cs.ucla.edu.
Fixes Bug#39363.
* configure.ac: Add check for 3-argument version of
pthread_setname_np.
* src/systhread.c (sys_thread_set_name)
[HAVE_PTHREAD_SETNAME_NP_3ARG]: Call pthread_setname_np with
3 arguments.
* src/minibuf.c (read_minibuf): Parse input string after saving
the string to the history list instead of before, in case parsing
signals an error or is interrupted by C-g. (Bug#39291)
Now, functions such as call-proess-region invoke after-change-functions
correctly.
* src/callproc.c (call_process): Call prepare_to_modify_buffer in a single
place, no longer delegating the task to insert_1_both, etc. Call
signal_after_change in each of two code branches, such that
before-change-functions and after-change-functions are always called in
balanced pairs.
* src/xdisp.c (try_window_reusing_current_matrix, try_window_id):
* src/dispnew.c (scrolling_window) [HAVE_NTGUI]: If
w32-use-visible-system-caret is non-nil, disallow scrolling the
display are in scroll_run_hook. This avoids copying traces of the
caret, about which Emacs knows nothing, and thus considers those
pixels show the default background. (Bug#39188)
(gui_update_window_end): Block input only around part of the code,
as we did before this code was extracted from backend-specific
implementations.
* src/w32term.c (w32_update_window_begin, w32_update_window_end):
Only hide/show the caret when redisplaying the window where the
caret is shown.
* src/term.c (handle_one_term_event): Call tty_handle_tab_bar_click.
* src/xdisp.c (tty_handle_tab_bar_click): Force reset of up_modifier bit
from the event modifiers.
* lisp/tab-line.el (tab-line-tab-current): No need to use inverse-video
on console/xterm because the selected tab already uses inverse-video.
* src/systhread.c (sys_thread_create) [!THREADS_ENABLED]: Update
the function's signature to match prototype. Reported by Glenn
Morris <rgm@gnu.org>. (Bug#38632)
pthread_setname_np takes only a single argument on BSD and macOS,
and affects the current thread only.
* configure.ac: Add check for single-argument pthread_setname_np
* src/systhread.c (sys_thread_set_name): New (w32 and pthread versions).
(sys_thread_create): Remove name argument and name-setting.
(w32_beginthread_wrapper): Remove name-setting.
* src/systhread.h (sys_thread_create, sys_thread_set_name):
Update prototypes.
* src/thread.c (run_thread): Call sys_thread_set_name.
(Fmake_thread): Adapt call to sys_thread_create.
* src/thread.h (struct thread_state): Adjust comment.
When using multiple monitors, and HiDPI, the top-left coordinates of
the monitors need to be adjusted, not just the width and height
(Bug#31223).
* xfns.c (Fx_display_monitor_attributes_list): Scale top-left
coordinates.
