Add commentary for the last commit.

diff --git a/src/xdisp.c b/src/xdisp.c
index fecf22af1e903e2f91195d4003a0ca6b1290e962..3ff4603b72703a7af68a63e038fd2dca86aebab4 100644 (file)
--- a/src/xdisp.c
+++ b/src/xdisp.c
@@ -7050,6 +7050,8 @@ get_next_display_element (struct it *it)
                }
            }
        }
+      /* next_element_from_display_vector sets this flag according to
+        faces of the display vector glyphs, see there.  */
       else if (it->method != GET_FROM_DISPLAY_VECTOR)
        {
          int face_id = face_after_it_pos (it);