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-rw-r--r--lisp/mail/mail-utils.el6
1 files changed, 4 insertions, 2 deletions
diff --git a/lisp/mail/mail-utils.el b/lisp/mail/mail-utils.el
index 002c37d8125..5414bf58fa9 100644
--- a/lisp/mail/mail-utils.el
+++ b/lisp/mail/mail-utils.el
@@ -34,10 +34,12 @@
(require 'lisp-mode)
;;;###autoload
-(defvar mail-use-rfc822 nil "\
+(defcustom mail-use-rfc822 nil "\
*If non-nil, use a full, hairy RFC822 parser on mail addresses.
Otherwise, (the default) use a smaller, somewhat faster, and
-often correct parser.")
+often correct parser."
+ :type 'boolean
+ :group 'mail)
;; Returns t if file FILE is an Rmail file.
;;;###autoload