; Improve commentary in 'setup_for_ellipsis'

* src/xdisp.c (setup_for_ellipsis): Improve commentary for when we
reset the ellipsis face to the default face.

1 files changed, 6 insertions, 3 deletions

diff --git a/src/xdisp.c b/src/xdisp.c
index ee748bd8680..87a92fce0f0 100644
--- a/src/xdisp.c
+++ b/src/xdisp.c
@@ -4583,9 +4583,12 @@ setup_for_ellipsis (struct it *it, int len)
   it->current.dpvec_index = 0;
   it->dpvec_face_id = -1;
 
-  /* Remember the current face id in case glyphs specify faces.
-     IT's face is restored in set_iterator_to_next.
-     saved_face_id was set to preceding char's face in handle_stop.  */
+  /* Reset the current face ID to default if the last visible
+     character and the first invisible character have different faces.
+     IT->saved_face_id was set in handle_stop to the face of the
+     preceding character, and will be different from IT->face_id only
+     if the invisible text skipped in handle_invisible_prop has some
+     non-default face.  IT's face is restored in set_iterator_to_next.  */
   if (it->saved_face_id < 0 || it->saved_face_id != it->face_id)
     it->saved_face_id = it->face_id = DEFAULT_FACE_ID;