* src/treesit.c (treesit_sync_visible_region): Set nee_reparse flag to
true if buffer range changes. Add some assertion.
* src/treesit.c (treesit_ensure_parsed): Move
treesit_sync_visible_region in front of the check for need_reparse.
* src/xdisp.c (get_locked_narrowing_begv)
(get_locked_narrowing_zv): Safer handling of negative values.
(handle_fontified_prop): Do not use locked narrowing if the region
size is <= 0.
* src/keyboard.c (safe_run_hooks_maybe_narrowed): Do not use
locked narrowing if the region size is <= 0.
* src/xterm.c (x_sync_wait_for_frame_drawn_event)
(x_sync_handle_frame_drawn): Only cancel frame synchronization
if hanging twice or more in a row.
* src/xterm.h (struct x_output, FRAME_X_DRAW_JUST_HUNG): New
flag.
* src/editfns.c (narrowing_locks_add, narrowing_locks_remove):
New functions, factored out.
(narrowing_lock_push, narrowing_lock_pop)
(narrowing_locks_restore): Use the new functions.
(narrowing_lock_get_bound): Return NULL for killed buffers.
(reset_outermost_narrowings, unwind_reset_outermost_narrowing):
Remove killed buffers from the 'narrowing_locks' alist.
* src/editfns.c (narrowing_lock_pop): Clarify comment, replace
assertion by return.
(narrowing_locks_restore): Add comments.
* lisp/subr.el (with-narrowing, internal--with-narrowing):
Simplify, use a single helper function with an optional argument.
* src/editfns.c:
(narrowing_lock_get_bound): Return a pointer to a struct
Lisp_Marker instead of a character position. Suggested by Eli
Zaretskii.
(reset_outermost_narrowings, unwind_reset_outermost_narrowing)
(Fwiden, Fnarrow_to_region): Adapt accordingly.
(narrowing_lock_peek_tag, narrowing_lock_push)
(narrowing_lock_pop, narrowing_locks_save)
(narrowing_locks_restore): Use XCAR/XCDR/XSETCAR instead of
Fcar/Fcdr/Fsetcar.
* src/buffer.c (syms_of_buffer): Two new variables,
'long-line-locked-narrowing-region-size' and
'long-line-locked-narrowing-bol-search-limit', to make the locked
narrowing around low-level hooks configurable.
Increase the default value of 'long-line-threshold'. After
carefully considering the (few) bug reports about long line
optimizations, I concluded that the previous default value was too
low.
* src/xdisp.c (get_locked_narrowing_begv)
(get_locked_narrowing_zv): Two new functions.
(handle_fontified_prop, reseat): Use them.
* src/keyboard.c (safe_run_hooks_maybe_narrowed): Use them.
* src/dispextern.h (struct it): Add two new fields to store the
values returned by these functions.
Make them externally visible.
* src/editfns.c: (Fsave_restriction): Update docstring.
* src/xfns.c (compute_tip_xy, Fx_show_tip):
* src/xselect.c (x_own_selection, x_get_local_selection)
(x_clear_frame_selections): Call CAR and CDR, not Fcar and Fcdr.
* src/editfns.c: (Fsave_restriction): Save and restore narrowing
locks. Suggested by Stefan Monnier.
(narrowing_locks_save, narrowing_locks_restore): Helper functions.
* lisp/subr.el (with-narrowing-1): Simplify.
* src/editfns.c: (narrowing_locks): New alist to hold the narrowing
locks and their buffers.
(narrowing_lock_get_bound, narrowing_lock_peek_tag)
(narrowing_lock_push, narrowing_lock_pop): New functions to access
and update 'narrowing_locks'.
(reset_outermost_narrowings, unwind_reset_outermost_narrowing):
Functions moved from src/xdisp.c, and rewritten with the above
functions.
(Fwiden): Use the above functions. Update docstring.
(Fnarrow_to_region, Fnarrowing_lock, Fnarrowing_unlock): Use the above
functions.
(syms_of_editfns): Remove the 'narrowing-locks' variable.
* src/lisp.h: Make 'reset_outermost_narrowings' externally visible.
* src/xdisp.c (reset_outermost_narrowings)
unwind_reset_outermost_narrowing): Functions moved to src/editfns.c.
* lisp/subr.el (with-locked-narrowing): Improved macro, with a helper
function.
* src/xterm.c (x_ignore_errors_for_next_request)
(x_stop_ignoring_errors): Be paranoid and block input inside the
protected section.
(x_focus_frame): Block input around critical section.
* src/treesit.c (make_treesit_parser): Use byte positions when
initializing 'lisp_parser'. This avoids assertion violations when
the buffer has non-ASCII characters.
* lisp/treesit.el (treesit-max-buffer-size): Avoid overflow in
computing buffer-size limit. Account for 32-but systems built
"--with-wide-int". Extend doc string.
(treesit-ready-p): Compare the limit with the size of the buffer
in bytes, not in characters.
* src/treesit.c (treesit_check_buffer_size): Measure buffer size
in bytes.
* src/xterm.c (x_display_set_last_user_time): Adjust for Xlib
sign extending fields in client messages to 64 bit long, which
then break x_display_set_last_user_time after 24 days, as Time
is unsigned long for historical reasons. (bug#59480)
* src/fns.c (Fstring_collate_lessp): Clarify that
IGNORE-CASE argument might be ignored when the operating
system does not implement string collation for the
specified locale. (Bug#59275)
