Separate parameter faces (those created and modified by the user)
from the computed faces (the combinations created by compute_char_face), so that we don't waste global face id's. * xterm.h (struct x_display): Replace the fields faces and n_faces with fields param_faces, n_param_faces, computed_faces, n_computed_faces, and size_computed_faces. (FRAME_FACES, FRAME_N_FACES): Replaced by... (FRAME_COMPUTED_FACES, FRAME_N_COMPUTED_FACES, FRAME_PARAM_FACES, FRAME_N_PARAM_FACES): New macros. * xfaces.c: Doc fixes. (init_frame_faces): Call new_computed_face to create entries for the default and mode line faces. Use the FRAME...PARAM_FACES macros. (free_frame_faces): Use the FRAME...PARAM_FACES and FRAME...COMPUTED_FACES macros. Don't use the copy flag; all parameter faces have real X resources, and all computed faces just have copies. Free both the parameter and computed face arrays. (new_computed_face): New function. (intern_computed_face): Renamed from intern_frame_face; callers changed. Call new_computed_face. (ensure_face_ready, compute_char_face, compute_glyph_face): Use the FRAME...PARAM_FACES macros. (recompute_basic_faces): Use the FRAME...PARAM_FACES and FRAME...COMPUTED_FACES macros. Produce the computed faces by starting with the base faces and merging in the parameter faces. (Fset_face_attribute_internal): Use the FRAME...PARAM_FACES macros. Just call recompute_basic_faces if the default or mode line faces have changed. * xfns.c (Fx_list_fonts): Use the FRAME...PARAM_FACES macros. * xterm.c (dumpglyphs): Use the FRAME...COMPUTED_FACES macros. * dispextern.h (struct face): Remove the copy member. This is no longer necessary; all computed faces are copies, and no parameter faces are.
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