src/xdisp.c (compute_display_string_pos): Fix logic of caching
previous display string position. Initialize cached_prev_pos to -1.
Fixes slow-down at the beginning of a buffer.
src/xdisp.c (move_it_in_display_line_to): Record the best matching
position for TO_CHARPOS while scanning the line, and restore it on
exit if none of the characters scanned was an exact match. Fixes
vertical-motion and pos-visible-in-window-p under bidi redisplay
when exact match is impossible due to invisible text, and the
lines are truncated.
src/xdisp.c (move_it_in_display_line_to): Record the best matching
position for TO_CHARPOS while scanning the line, and restore it on
exit if none of the characters scanned was an exact match. Fixes
vertical-motion and pos-visible-in-window-p when exact match is
impossible due to invisible text, and the lines are truncated.
src/xdisp.c (compute_stop_pos_backwards): New function.
(next_element_from_buffer): Call compute_stop_pos_backwards to
find a suitable prev_stop when we find ourselves before
base_level_stop.
(reseat): Don't look for prev_stop, as that could mean a very long
run.
<cached_disp_pos, cached_disp_buffer, cached_disp_modiff>
<cached_disp_overlay_modiff>: Cache for last found display string
position.
(compute_display_string_pos): Return the cached position if asked
about the same buffer in the same area of character positions, and
the buffer wasn't changed since the time the display string
position was cached.
src/xdisp.c (compute_stop_pos_backwards): New function.
(handle_stop_backwards): Revert last change.
(next_element_from_buffer): Call compute_stop_pos_backwards to
find a suitable prev_stop when we find ourselves before
base_level_stop. Remove the funky search for 1000 character
positions back.
src/xdisp.c (reseat): Don't look for prev_stop, as that could mean a
very long run.
(next_element_from_buffer): When iterator oversteps prev_pos
backwards, don't search for a new prev_stop more than 1000
characters back.
(handle_stop_backwards): Don't assume that CHARPOS is necessarily
a stop_pos.
(compute_display_string_pos): Check also BUF_OVERLAY_MODIFF for a
match, when testing the cached display string position for
applicability.
See http://lists.gnu.org/archive/html/emacs-devel/2011-07/msg00688.html
and the surrounding thread.
* minibuf.c (read_minibuf_noninteractive): Rewrite to use getchar
rather than fgets, and retry after EINTR. Otherwise, 'emacs
--batch -f byte-compile-file' fails on OpenBSD if an inactivity
timer goes off.
* s/openbsd.h (BROKEN_SIGIO): Define.
* unexelf.c (unexec) [__OpenBSD__]:
Don't update the .mdebug section of the Alpha COFF symbol table.
If fchown fails to set both uid and gid, try to set just gid,
as that is sometimes allowed. Adjust the file's mode to eliminate
setuid or setgid bits that are inappropriate if fchown fails.
to compare Lisp_Objects.
* src/gnutls.c (syms_of_gnutls): Rename Vgnutls_log_level to
global_gnutls_log_level, don't mistake it for a Lisp_Object.
(init_gnutls_functions, emacs_gnutls_handle_error): Fix up uses.
This works around a problem with the previous change to Fcopy_file.
Recent glibc declares fchown with __attribute__((warn_unused_result)),
and without this change, GCC might complain about discarding
fchown's return value.
src/xdisp.c <cached_disp_pos, cached_disp_buffer, cached_disp_modiff>:
Cache for last found display string position.
(compute_display_string_pos): Return the cached position if asked
about the same buffer.
