X-Git-Url: https://cgit.sxemacs.org/?p=gnus;a=blobdiff_plain;f=lisp%2Fgnus-sum.el;h=dc7bde62c135ccd5d4812e299e16acbb6376a429;hp=4f6a565aa52e33330c2c9391252eaa00126a7903;hb=d626ac599e6c88f6b61e3271cc80b5ec837c5bc2;hpb=ad047d8199958b02778e7aa8e239ef99d64472f9

diff --git a/lisp/gnus-sum.el b/lisp/gnus-sum.el
index 4f6a565aa..dc7bde62c 100644
--- a/lisp/gnus-sum.el
+++ b/lisp/gnus-sum.el
@@ -3831,6 +3831,13 @@ This function is intended to be used in
       (and (consp elem)			; Has to be a cons.
 	   (consp (cdr elem))		; The cdr has to be a list.
 	   (symbolp (car elem))		; Has to be a symbol in there.
+
+	   ;; Variables like `gnus-show-threads' that are globally bound,
+	   ;; if used as group parameters, need to get to be buffer-local,
+	   ;; whereas just parameters like `gcc-self', `timestamp', etc.
+	   ;; should not be bound as variables.
+	   (boundp (car elem))		; Has to be already bound
+
 	   (not (memq (car elem) vars))
 	   (ignore-errors		; So we set it.
 	     (push (car elem) vars)