(decode_mode_spec): Display non-nil title as the frame's

name only on FRAME_WINDOW_P frames.

1 files changed, 4 insertions, 1 deletions

diff --git a/src/xdisp.c b/src/xdisp.c
index 26eca6d258b..b7c0c274c1f 100644
--- a/src/xdisp.c
+++ b/src/xdisp.c
@@ -4309,7 +4309,10 @@ decode_mode_spec (w, c, spec_width, maxwidth)
 
     case 'F':
       /* %F displays the frame name.  */
-      if (!NILP (f->title))
+      /* Systems that can only display a single frame at a time should
+         NOT replace the frame name with the (constant) frame title,
+         since then they won't be able to tell which frame is that.  */
+      if (FRAME_WINDOW_P (f) && !NILP (f->title))
         return (char *) XSTRING (f->title)->data;
       if (f->explicit_name || ! FRAME_WINDOW_P (f))
         return (char *) XSTRING (f->name)->data;