Fix display of raised/lowered composed text

* src/xdisp.c (fill_gstring_glyph_string): Adjust the base line of
the glyph string due to subscript/superscript.  (Bug#61290)

1 files changed, 5 insertions, 0 deletions

diff --git a/src/xdisp.c b/src/xdisp.c
index d2c91e5847b..a19c9908616 100644
--- a/src/xdisp.c
+++ b/src/xdisp.c
@@ -29317,6 +29317,7 @@ fill_gstring_glyph_string (struct glyph_string *s, int face_id,
                            int start, int end, int overlaps)
 {
   struct glyph *glyph, *last;
+  int voffset;
   Lisp_Object lgstring;
   int i;
   bool glyph_not_available_p;
@@ -29324,6 +29325,7 @@ fill_gstring_glyph_string (struct glyph_string *s, int face_id,
   s->for_overlaps = overlaps;
   glyph = s->row->glyphs[s->area] + start;
   last = s->row->glyphs[s->area] + end;
+  voffset = glyph->voffset;
   glyph_not_available_p = glyph->glyph_not_available_p;
   s->cmp_id = glyph->u.cmp.id;
   s->cmp_from = glyph->slice.cmp.from;
@@ -29374,6 +29376,9 @@ fill_gstring_glyph_string (struct glyph_string *s, int face_id,
   if (glyph_not_available_p)
     s->font_not_found_p = true;
 
+  /* Adjust base line for subscript/superscript text.  */
+  s->ybase += voffset;
+
   return glyph - s->row->glyphs[s->area];
 }