(mail-default-reply-to): Doc fix.

diff --git a/lisp/mail/sendmail.el b/lisp/mail/sendmail.el
index 5c33f370e939c9d3a19813fcd1a6e8e6cf7168f5..5384dc0cb25aa46706c9c210a162ea7c5f087fe3 100644 (file)
--- a/lisp/mail/sendmail.el
+++ b/lisp/mail/sendmail.el
@@ -72,7 +72,9 @@ This can be an inbox file or an Rmail file.")
 
 ;;;###autoload
 (defvar mail-default-reply-to nil
-  "*Address to insert as default Reply-to field of outgoing messages.")
+  "*Address to insert as default Reply-to field of outgoing messages.
+If nil, it will be initialized from the REPLYTO environment variable
+when you first send mail.")
 
 ;;;###autoload
 (defvar mail-alias-file nil