From ff17818207cd996554e8eb17890388493ed63257 Mon Sep 17 00:00:00 2001
From: David Aspinall
Date: Fri, 16 Apr 2004 17:35:58 +0000
Subject: Add boundp check to proof-map-multiple-frame-specifiers, for some
 back compatibility.

---
 generic/pg-response.el | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/generic/pg-response.el b/generic/pg-response.el
index abfdd328..73354166 100644
--- a/generic/pg-response.el
+++ b/generic/pg-response.el
@@ -81,9 +81,10 @@ Internal variable, setting this will have no effect!")
 (defun proof-map-multiple-frame-specifiers (multiframep locale)
   "Set XEmacs specifiers according to MULTIFRAMEP in LOCALE."
   (dolist (spec proof-multiframe-specifiers)
-    (set-specifier (car spec) 
-		   (if multiframep (cadr spec) (caddr spec) )
-		   locale)))
+    (if (boundp (car spec)) ;; FIXME: this is for backwards compatibility XE 21.1
+	(set-specifier (car spec) 
+		       (if multiframep (cadr spec) (caddr spec) )
+		       locale))))
 
 (defconst proof-multiframe-parameters
   '((minibuffer . nil)
-- 
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