From: Eli Zaretskii <eliz@gnu.org>
Date: Sat, 9 Oct 2021 11:38:06 +0000 (+0300)
Subject: ; * src/dispextern.h (struct glyph_string): Comment on NCHARS.  (Bug#51105)
X-Git-Tag: emacs-28.0.90~347
X-Git-Url: http://git.eshelyaron.com/gitweb/?a=commitdiff_plain;h=00eb21c897;p=emacs.git

; * src/dispextern.h (struct glyph_string): Comment on NCHARS.  (Bug#51105)
---

diff --git a/src/dispextern.h b/src/dispextern.h
index 6aefe43e195..08dac5d4557 100644
--- a/src/dispextern.h
+++ b/src/dispextern.h
@@ -1326,7 +1326,9 @@ struct glyph_string
   /* The area within row.  */
   enum glyph_row_area area;
 
-  /* Characters to be drawn, and number of characters.  */
+  /* Characters to be drawn, and number of characters.  Note that
+     NCHARS can be zero if this is a composition glyph string, as
+     evidenced by FIRST_GLYPH->type.  */
   unsigned *char2b;
   int nchars;