* src/haikufns.c (Fx_show_tip):
* src/nsfns.m (Fx_show_tip): Allow sharing existing tooltip
frames between any two frames.
* src/xfns.c (Fx_show_tip): Allow that but only between frames
on the same X display.
* src/xdisp.c (get_narrowed_width): Factored out from 'get_narrowed_len'.
(get_narrowed_len): Updated to use 'get_narrowed_width'.
(get_closer_narrowed_begv): New function.
(SET_WITH_NARROWED_BEGV): Add parameter to the macro.
(back_to_previous_line_start): Use the new function.
(get_visually_first_element, move_it_vertically_backward): Update the
calls to the macro.
* src/dispextern.h: Prototype of 'get_closer_narrowed_begv'.
Fix the prototypes of 'get_narrowed_begv' and 'get_narrowed_zv'.
* src/xterm.c (handle_one_xevent): Clear last_mouse_motion_frame
and last_mouse_glyph_frame on LeaveNotify. Otherwise, mouse
face will be restored by gui_redo_mouse_highlight and will not
be restored if an EnterNotify is later sent on top of the same
glyph.
* src/xdisp.c (decode_mode_spec, redisplay_window)
(mode_line_update_needed):
* src/indent.c (Fcurrent_column): In a buffer with long-line
optimizations enabled, avoid calling 'current_column', which is
very slow in that case.
For discussion, see:
https://lists.gnu.org/r/emacs-devel/2022-07/msg00761.html
* src/pdumper.c (dump_buffer): Dump new field
long_line_optimizations_p introduced in commit e7b5912b23 of
2022-07-16 "Improvements to long lines handling."
(dump_buffer) [CHECK_STRUCTS]: Update hash accordingly
for --enable-checking=structs.
* src/xdisp.c (forward_to_next_line_start): Fix logic of
interpreting the result of Fnext_single_property_change.
(reseat_at_next_visible_line_start): When ON_NEWLINE_P is zero,
pass NULL to 'forward_to_next_line_start', to avoid costly bidi
iteration when none is needed. This speeds up redisplay of very
long lines under 'truncate-lines'.
* src/xterm.c (x_dnd_begin_drag_and_drop): Clear new flag.
(x_dnd_update_tooltip_position): Save last tooltip X and Y
somewhere, so we don't move it upon client lists being updated.
* src/dispextern.h (struct it): New 'narrowed_zv' field.
* src/xdisp.c (init_iterator): Set the field.
(get_narrowed_zv): New function to set the field.
(handle_fontified_prop): Use the field, together with 'narrowed_begv',
to narrow the portion of the buffer that 'Vfontification_functions'
will see. Also bind 'inhibit-widen'.
(get_narrowed_len): New function, factored out of 'get_narrowed_begv'.
(unwind_narrowed_zv): New function.
* src/editfns.c (syms_of_editfns): New variable and symbol 'inhibit-widen'.
(Fwiden): Do nothing when 'inhibit-widen' is non-nil.
* lisp/x-dnd.el (x-dnd-hscroll-flags): Delete function.
(x-dnd-get-modifiers, x-dnd-wheel-modifier-type): New functions.
(x-dnd-mwheel-scroll): Use that to determine hscroll instead.
* src/window.c (set_window_hscroll): Mark window as needing
redisplay if the hscroll really changed.
* src/xterm.c (x_get_last_toolkit_time): New function.
(x_scroll_bar_to_input_event)
(x_horizontal_scroll_bar_to_input_event): Use it to retrieve
toolkit time.
(xg_scroll_callback, xg_end_scroll_callback): Set last user time
if possible.
* src/xdisp.c (redisplay_window): Increase the threshold above which
long lines detection is performed in the buffer. This should avoid
triggering that detection for most simple editing operations.
* src/lisp.h (modiff_incr): Explain why the counter is incremented
logarithmically.
* src/buffer.h (struct buffer_text): Adapt the comment about the
'modiff' field accordingly.
* src/buffer.c (modify_overlay): Increase the counter by 1 instead of
the size of the buffer section on which the overlay is placed.
* etc/NEWS: Small improvement.
* lisp/term/haiku-win.el (haiku-dnd-wheel-count): New defvar.
(haiku-note-wheel-click, haiku-handle-drag-wheel): New
functions.
* src/haiku_support.cc (EmacsWindow): Get rid of window ID
logic.
(MessageReceived, MouseMoved, be_drag_message): Use thread ID to
identify windows instead of window ID.
* src/haikuselect.c (Fhaiku_drag_message): Record whether or not
the DND frame is a valid drop target.
(haiku_note_drag_wheel): New function.
(syms_of_haikuselect): New defvar.
* src/haikuterm.c (haiku_read_socket): Call
`haiku_note_drag_wheel' when appropriate.
* src/haikuterm.h: Update prototypes.
* src/lisp.h (modiff_incr): Add a parameter to 'modiff_incr' to record
the extent of the modification.
* src/insdel.c (insert_1_both, insert_from_string_1, insert_from_gap,
insert_from_buffer_1, adjust_after_replace, replace_range,
replace_range_2, del_range_2, modify_text): Add an argument to each
call to 'modiff_incr'.
* src/textprop.c (modify_text_properties): Add an argument to the call
to 'modiff_incr'.
* src/buffer.c (Frestore_buffer_modified_p, Fbuffer_swap_text,
modify_overlay): Add an argument to each call to 'modiff_incr'.
* src/xdisp.c (redisplay_window): Use the improved version of 'MODIFF'
for the heuristic.
