(Fx_show_tip): Set string to " " if empty.

2 files changed, 7 insertions, 0 deletions

diff --git a/src/ChangeLog b/src/ChangeLog
index 25dd28a3ea5..8f89ffede5f 100644
--- a/src/ChangeLog
+++ b/src/ChangeLog
@@ -1,3 +1,7 @@
+2008-02-18  Jan Dj$(Q)Z(Brv  <jan.h.d@swipnet.se>
+
+        * xfns.c (Fx_show_tip): Set string to " " if empty.
+
 2008-02-17  Dan Nicolaescu  <dann@ics.uci.edu>
 
         * callint.c (syms_of_callint): Initialize Vmark_even_if_inactive
diff --git a/src/xfns.c b/src/xfns.c
index 0261f1b7f71..9c2afbf6736 100644
--- a/src/xfns.c
+++ b/src/xfns.c
@@ -5317,6 +5317,9 @@ Text larger than the specified size is clipped.  */)
   GCPRO4 (string, parms, frame, timeout);
 
   CHECK_STRING (string);
+  if (SCHARS (string) == 0)
+    string = make_unibyte_string (" ", 1);
+
   f = check_x_frame (frame);
   if (NILP (timeout))
     timeout = make_number (5);