Added the type 'regexp and group 'notmuch-send as properties to the
customizable variable notmuch-mua-attachment-regexp.
"Message body text indicating that an attachment is expected.
This is not used unless `notmuch-mua-attachment-check' is added
"Message body text indicating that an attachment is expected.
This is not used unless `notmuch-mua-attachment-check' is added
-to `notmuch-mua-send-hook'.")
+to `notmuch-mua-send-hook'."
+ :type 'regexp
+ :group 'notmuch-send)