Fix list-colors-display and other functions on a termcap frame

src/term.c (get_tty_display): Fall back to the current device if
display is nil.  (Reported by Dan Nicolaescu <dann at ics dot uci dot edu>.)

git-archimport-id: lorentey@elte.hu--2004/emacs--multi-tty--0--patch-81

1 files changed, 6 insertions, 2 deletions

diff --git a/src/term.c b/src/term.c
index ddca41f3173..b345211b91c 100644
--- a/src/term.c
+++ b/src/term.c
@@ -1882,14 +1882,18 @@ tty_capable_p (tty, caps, fg, bg)
   return 1;
 }
 
-/* Return the tty display object specified by DISPLAY.
-   DISPLAY may be a frame or a string. */
+/* Return the tty display object specified by DISPLAY.  DISPLAY may be
+   a frame, a string, or nil for the display device of the current
+   frame. */
 
 static struct display *
 get_tty_display (Lisp_Object display)
 {
   struct display *d;
 
+  if (NILP (display))
+    display = selected_frame;
+
   if (! FRAMEP (display) && ! STRINGP (display))
     return 0;