From: Eli Zaretskii <eliz@gnu.org>
Date: Thu, 25 Feb 2016 17:57:47 +0000 (+0200)
Subject: Fix redisplay on a TTY after 'make-frame'
X-Git-Tag: emacs-25.0.92~36
X-Git-Url: http://git.eshelyaron.com/gitweb/?a=commitdiff_plain;h=06a872b71d6580e0699600844bb9526602437990;p=emacs.git

Fix redisplay on a TTY after 'make-frame'

* src/xdisp.c (clear_garbaged_frames): Don't clear/redraw a
garbaged TTY frame if it is not the selected frame.  (Bug#22794)
---

diff --git a/src/xdisp.c b/src/xdisp.c
index fed58799eaa..dec99478ea5 100644
--- a/src/xdisp.c
+++ b/src/xdisp.c
@@ -11232,6 +11232,7 @@ clear_garbaged_frames (void)
   if (frame_garbaged)
     {
       Lisp_Object tail, frame;
+      struct frame *sf = SELECTED_FRAME ();
 
       FOR_EACH_FRAME (tail, frame)
 	{
@@ -11239,7 +11240,13 @@ clear_garbaged_frames (void)
 
 	  if (FRAME_VISIBLE_P (f) && FRAME_GARBAGED_P (f))
 	    {
-	      if (f->resized_p)
+	      if (f->resized_p
+		  /* It makes no sense to redraw a non-selected TTY
+		     frame, since that will actually clear the
+		     selected frame, and might leave the selected
+		     frame with corrupted display, if it happens not
+		     to be marked garbaged.  */
+		  && !(f != sf && (FRAME_TERMCAP_P (f) || FRAME_MSDOS_P (f))))
 		redraw_frame (f);
 	      else
 		clear_current_matrices (f);