From 90e9cf85be9b36cc11ae52af765b8f4236be8833 Mon Sep 17 00:00:00 2001
From: Michael Sperber <mike@xemacs.org>
Date: Tue, 20 Oct 2015 11:18:30 +0000
Subject: [PATCH] * lisp/gnus/mailcap.el (mailcap-mime-data): Conditonalize
 `doc-view-mode', which does not exist on XEmacs.

---
 lisp/gnus/mailcap.el | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/lisp/gnus/mailcap.el b/lisp/gnus/mailcap.el
index 9f844139960..a3348c69869 100644
--- a/lisp/gnus/mailcap.el
+++ b/lisp/gnus/mailcap.el
@@ -160,7 +160,8 @@ This is a compatibility function for different Emacsen."
      ("pdf"
       (viewer . doc-view-mode)
       (type . "application/pdf")
-      (test . (eq window-system 'x)))
+      (test . (and (fboundp 'doc-view-mode)
+		   (eq window-system 'x))))
      ("pdf"
       (viewer . "gv -safer %s")
       (type . "application/pdf")
-- 
2.39.2