I made a little modification to this patch, and after verification, emacs does not crash anymore, thanks!😊 diff --git a/src/xdisp.c b/src/xdisp.c index 9cddcfe..830b622 100644 --- a/src/xdisp.c +++ b/src/xdisp.c @@ -8312,9 +8312,14 @@ get_next_display_element (struct it *it) && success_p && FRAME_WINDOW_P (it->f)) { - struct face *face = FACE_FROM_ID (it->f, it->face_id); + struct face *face = FACE_FROM_ID_OR_NULL (it->f, it->face_id); - if (it->what == IT_COMPOSITION && it->cmp_it.ch >= 0) + if (!face) + { + it->what = IT_GLYPHLESS; + it->glyphless_method = GLYPHLESS_DISPLAY_EMPTY_BOX; + } + else if (it->what == IT_COMPOSITION && it->cmp_it.ch >= 0) { /* Automatic composition with glyph-string. */ Lisp_Object gstring = composition_gstring_from_id (it->cmp_it.id); @@ -31782,8 +31787,8 @@ produce_glyphless_glyph (struct it *it, bool for_no_font, Lisp_Object acronym) /* Get the metrics of the base font. We always refer to the current ASCII face. */ - face = FACE_FROM_ID (it->f, it->face_id)->ascii_face; - font = face->font ? face->font : FRAME_FONT (it->f); + face = FACE_FROM_ID_OR_NULL (it->f, it->face_id); + if (face) + { + face = face->ascii_face; + } + font = (face && face->font) ? face->font : FRAME_FONT (it->f); normal_char_ascent_descent (font, -1, &it->ascent, &it->descent); it->ascent += font->baseline_offset; it->descent -= font->baseline_offset;