From 0d8ef3f41adc67c1d931ae2fb7b63d621b9128c9 Mon Sep 17 00:00:00 2001
From: "Richard M. Stallman" <rms@gnu.org>
Date: Fri, 11 Aug 1995 00:55:47 +0000
Subject: [PATCH] (x_set_menu_bar_lines) [USE_X_TOOLKIT]: When turning menu bar
 on, make sure next redisplay creates it.

---
 src/xfns.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/xfns.c b/src/xfns.c
index 10d8fab1109..31cee63fff2 100644
--- a/src/xfns.c
+++ b/src/xfns.c
@@ -1694,7 +1694,12 @@ x_set_menu_bar_lines (f, value, oldval)
 #ifdef USE_X_TOOLKIT
   FRAME_MENU_BAR_LINES (f) = 0;
   if (nlines)
-    FRAME_EXTERNAL_MENU_BAR (f) = 1;
+    {
+      FRAME_EXTERNAL_MENU_BAR (f) = 1;
+      if (f->output_data.x->menubar_widget == 0)
+	/* Make sure next redisplay shows the menu bar.  */
+	XWINDOW (FRAME_SELECTED_WINDOW (f))->update_mode_line = Qt;
+    }
   else
     {
       if (FRAME_EXTERNAL_MENU_BAR (f) == 1)
-- 
2.39.2