Fix issue with mml-preview from outside Gnus

* lisp/gnus/gnus-art.el (gnus-mime-display-alternative): Be more resilient when running from outside Gnus.
flatwhatson · Jul 30, 2021 · 0bd1346 · 0bd1346
1 parent 4053bd5
commit 0bd1346
Showing 1 changed file with 3 additions and 2 deletions.
diff --git a/lisp/gnus/gnus-art.el b/lisp/gnus/gnus-art.el
@@ -6238,8 +6238,9 @@ If nil, don't show those extra buttons."
 	      (gnus-display-mime preferred)
 	    (let ((mail-parse-charset gnus-newsgroup-charset)
 		  (mail-parse-ignored-charsets
-		   (with-current-buffer gnus-summary-buffer
-		     gnus-newsgroup-ignored-charsets)))
+                   (and (buffer-live-p gnus-summary-buffer)
+		        (with-current-buffer gnus-summary-buffer
+		          gnus-newsgroup-ignored-charsets))))
 	      (gnus-bind-mm-vars (mm-display-part preferred))
 	      ;; Do highlighting.
 	      (save-excursion