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Eli Zaretskii authored
Support bidi reordering of unibyte strings. Fix crash displaying "All" in mode line of an empty buffer. src/dispextern.h (struct bidi_string_data): New member `unibyte'. src/xdisp.c (handle_single_display_spec, next_overlay_string) (get_overlay_strings_1, reseat_1, reseat_to_string) (push_display_prop): Set up the `unibyte' member of bidi_it.string correctly. Don't assume unibyte strings are not bidi-reordered. (compute_display_string_pos) (compute_display_string_end): Fix handling the case of C string. src/bidi.c (bidi_count_bytes, bidi_char_at_pos): Accept an additional argument UNIBYTE, and support unibyte strings. All callers changed. (bidi_fetch_char): Support unibyte strings.
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