Eli Zaretskii authored
* src/xdisp.c (get_next_display_element): For a composition on a display or overlay string, set the end_of_box_run_p flag if the string ends at the last character included in the composition. (fill_gstring_glyph_string): Fix the way the width of a gstring glyph string is calculated: use the values calculated in gui_produce_glyphs, since the latter adjusts the width due to the face's ':box' attribute. * src/xterm.c (x_draw_glyph_string_box): * src/w32term.c (w32_draw_glyph_string_box): * src/nsterm.m (ns_dumpglyphs_box_or_relief): Support automatic compositions, which have the right_box_line_p flag set on the last glyph produced from the composition. (Bug#40687) * src/w32term.c (w32_compute_glyph_string_overhangs): Update to be consistent with xterm.c in its support of automatic composition glyph strings. * src/dispextern.h (enum glyph_type): More accurate commentary. * src/.gdbinit (pgx): Display slice.img members only for image glyphs.