Anonymous - 2010-03-01

Slightly better version of the patch:

<pre>
diff --git a/post.el b/post.el
index 67032e5..81c6435 100644
--- a/post.el
+++ b/post.el
@@ -347,7 +347,7 @@ is very primitive), you can type \\[fill-paragraph] to rewrap the paragraph."
:type 'boolean
:group 'post)

-(defcustom post-mail-message "\\(mutt\\(ng\\)?-[a-zA-Z0-9-.]+-[0-9]+-[0-9]+\\|mutt\\(ng\\)?[a-zA-Z0-9._-]\\{6\\}\\)\\'"
+(defcustom post-mail-message "\\(mutt\\(ng\\)?-[a-zA-Z0-9-.]+-[0-9]+-[0-9]+\\(-[a-fA-F0-9]+\\)?\\|mutt\\(ng\\)?[a-zA-Z0-9._-]\\{6\\}\\)\\'"
"*Regular expression which matches your mailer's temporary files."
:type 'regexp
:group 'post)
</pre>