emacs: Reuse rather than reinvent message header filtering

In notmuch-mua-reply we were filtering out the Subject and To headers
manually in a loop, but message mode offers a nice function for
exactly that. Simplify the code by using it. Also, as notmuch-mua-mail
already sorts and hides headers that we want sorted and hidden, we can
safely remove those 2 functions from here as well.  Also remove the
(require 'cl), the only reason for its existence was the now removed
"loop" function.

Signed-off-by: Sebastian Spaeth <Sebastian@SSpaeth.de>

diff --git a/emacs/notmuch-mua.el b/emacs/notmuch-mua.el
index bd06e3cb29764c2cc4f46de96111a4da47db622e..0975fe610415c895965a1a150984fcab9ab9c428 100644 (file)
--- a/emacs/notmuch-mua.el
+++ b/emacs/notmuch-mua.el
@@ -19,7 +19,6 @@
 ;;
 ;; Authors: David Edmondson <dme@dme.org>
 
-(require 'cl)
 (require 'message)
 
 (require 'notmuch-lib)
@@ -92,12 +91,7 @@ list."
        ((same-window-regexps '("\\*mail .*")))
       (notmuch-mua-mail (mail-header 'to headers)
                        (mail-header 'subject headers)
-                       (loop for header in headers
-                             if (not (or (eq 'to (car header))
-                                         (eq 'subject (car header))))
-                             collect header)))
-    (message-sort-headers)
-    (message-hide-headers)
+                       (message-headers-to-generate headers t '(to subject))))
     ;; insert the message body - but put it in front of the signature
     ;; if one is present
     (goto-char (point-max))