emacs/src/composite.c, branch fix/bug-60974

; Add 2023 to copyright years.

2023-01-01T10:31:12+00:00

Avoid uninitialized variable warning

2022-09-27T03:39:31+00:00

* src/composite.c (composition_gstring_adjust_zero_width): Simplify
last change with respect to an exit condition.

Adjust zero-width grapheme clusters so they are displayed (Bug#50951)

2022-09-27T00:22:00+00:00

* src/composite.c (composition_gstring_adjust_zero_width): New function.
* src/composite.h: Declare it.
* src/font.c (Ffont_shape_gstring): Use it before putting gstring to cache.

Fix rare shaping problems with Urdu and Arabic

2022-09-17T16:58:52+00:00

* src/composite.c (fill_gstring_body): Clear unused slots of the
gstring.  (Bug#50951)

; * src/composite.c: Include stdlib.h.

2022-08-06T15:37:57+00:00

; * src/composite.c (Fcomposition_sort_rules): Fix last change.

2022-08-06T15:00:16+00:00

New function 'composition-sort-rules'

2022-08-06T14:58:08+00:00

* src/composite.c (Fcomposition_sort_rules)
(compare_composition_rules): New functions.

; * src/composite.c (find_automatic_composition): Fix a typo.

2022-08-04T09:47:32+00:00

Improve Bidi with long lines.

2022-08-04T09:07:28+00:00

* src/composite.c (composition_compute_stop_pos): Use an 'endpos' that
is not too far away.
(find_automatic_composition): Use a 'head' that is not too far away.
Also make sure that this code path is not taken when long line
optimizations are disabled.

* src/dispextern.h (struct composition_it): Add a field that points
to the parent iterator.

* src/xdisp.c (init_iterator): Set it.

Various improvements to long lines handling.

2022-08-01T15:52:55+00:00

* src/xdisp.c (get_visually_first_element,
(move_it_vertically_backward): Do not go back too far with bidi.
(get_narrowed_begv): Do not return 0 anymore instead of BEGV.
(handle_fontified_prop): Simplify accordingly.

* src/keyboard.c (safe_run_hooks_maybe_narrowed): Simplify accordingly.

* src/composite.c (find_automatic_composition): Ditto.