From: Eli Zaretskii <eliz@gnu.org>
Date: Sat, 9 Nov 2024 12:07:09 +0000 (+0200)
Subject: ; * src/dispnew.c (prepare_desired_root_row): Add commentary (bug#74274).
X-Git-Url: http://git.eshelyaron.com/gitweb/?a=commitdiff_plain;h=f3c662324a8252087028616fe8b151e8873df982;p=emacs.git

; * src/dispnew.c (prepare_desired_root_row): Add commentary (bug#74274).

(cherry picked from commit aa8bebf9b3eff9e53eeb1dc1a91fcc9ee5ee1095)
---

diff --git a/src/dispnew.c b/src/dispnew.c
index 15fbf983b4b..5ac8b7a6a71 100644
--- a/src/dispnew.c
+++ b/src/dispnew.c
@@ -3514,6 +3514,8 @@ prepare_desired_root_row (struct frame *root, int y)
   /* Start with the root's desired matrix row.  If that hasn't been
      redisplayed, copy from the root's current matrix.  */
   struct glyph_row *root_row = MATRIX_ROW (root->desired_matrix, y);
+  /* Don't copy rows that aren't enabled, in particuler because they
+     might not have the 'frame' member of glyphs set.  */
   if (!root_row->enabled_p)
     {
       struct glyph_row *from = MATRIX_ROW (root->current_matrix, y);