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* xdisp.c (handle_face_prop): Pass base_face_id of iterator to
face_at_buffer_position.
(face_before_or_after_it_pos, get_next_display_element)
(note_mouse_highlight): Update face_at_buffer_position call.

* term.c (term_mouse_highlight):
* msdos.c (IT_note_mouse_highlight):
* fontset.c (Finternal_char_font):
* font.c (font_at, font_range): Update face_at_buffer_position
call.

* dispextern.h (face_at_buffer_position): Update prototype.

* font.h (Qja, Qko): Extern them.
* ftfont.c (Qja, Qko): Remove declarations.
* xfont.c (Qja, Qko): Remove declarations.

BEST-ONLY.  Don't optimize for VEC of lenght 1.
(font_select_entity): Just return the value of font_sort_entites.

the returned value.

elements.
(font_select_entity): Suppress the code to optimize for the same
kind of fonts.
(font_load_for_lface): Get a font that supports at least ASCII
characters.

from the list of extra properties.
(font_clear_prop): Be sure to delete `:name' font property.

(font_open_by_name): Use font_open_by_spec.

(font_find_for_lface): Use font_select_entity to select a font.

100 instead of 255.
(weight_table, slant_table, width_table): Treat "unspecified" as the
default value.

moved to data.c.

(Ffont_spec): Describe :lang and :otf in the docstring.

(font_parse_name): Treat a `?' character as part of an XLFD.

too.

selector.
(Ffont_variation_glyphs): New function.
(syms_of_font): Defsubr it.

(font_clear_cache): Fix format of font cache data.

type changed.  Handle a font-spec too.
(font_score): Check Vface_font_rescale_alist.
(font_open_entity): Likewise.

(font_put_frame_data): Likewise.

characters is in script-representative-chars.