Re: nnmail-fancy-expiry-target problems

[Katsumi Yamaoka]

>>>>> Austin Frank wrote:

> Debugger entered--Lisp error: (wrong-type-argument stringp nil)
>   string-match(nil "\"John Q. Public\" <jqpublic@MIT.EDU>")
>   nnmail-fancy-expiry-target("mail.academic")

You may possibly be the first person who tried using `to-from'
and `nnmail-fancy-expiry-target' ever since it was introduced in
December, 2001.  IIUC, this is a bug that arises in the case
where `message-dont-reply-to-names' is nil, though it is likely
to default to nil in most Gnus users.  Could you try this patch?

--- nnmail.el~  2007-10-04 21:53:35 +0000
+++ nnmail.el   2007-10-18 05:49:39 +0000
@@ -1910,8 +1910,10 @@
        ;; To or From header
        ((and (equal header 'to-from)
             (or (string-match (cadr regexp-target-pair) from)
-                (and (string-match (message-dont-reply-to-names) from)
-                     (string-match (cadr regexp-target-pair) to))))
+                (and (string-match (cadr regexp-target-pair) to)
+                     (let ((rmail-dont-reply-to-names
+                            (message-dont-reply-to-names)))
+                       (equal (rmail-dont-reply-to from) "")))))
        (setq target (format-time-string (caddr regexp-target-pair) date)))
        ((and (not (equal header 'to-from))
             (string-match (cadr regexp-target-pair)