[PATCH] emacs: add pipe attachment command

[Jameson Graef Rollins <jrollins@finestructure.net>]

From: Mark Walters <markwalters1009@gmail.com>

Allow the user to pipe the attachment somewhere. Bound to '|' on the
attachment button.

Signed-off-by: Jameson Graef Rollins <jrollins@finestructure.net>
---
Nice missing feature.  Tested and reviewed.  It just needed to be
rebased against the current master.

 emacs/notmuch-show.el |   10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/emacs/notmuch-show.el b/emacs/notmuch-show.el
index d318430..26bff8f 100644
--- a/emacs/notmuch-show.el
+++ b/emacs/notmuch-show.el
@@ -453,6 +453,7 @@ message at DEPTH in the current thread."
     (define-key map "s" 'notmuch-show-part-button-save)
     (define-key map "v" 'notmuch-show-part-button-view)
     (define-key map "o" 'notmuch-show-part-button-interactively-view)
+    (define-key map "|" 'notmuch-show-part-button-pipe)
     map)
   "Submap for button commands")
 (fset 'notmuch-show-part-button-map notmuch-show-part-button-map)
@@ -524,6 +525,11 @@ message at DEPTH in the current thread."
     (let ((handle (mm-make-handle (current-buffer) (list content-type))))
       (mm-interactively-view-part handle))))
 
+(defun notmuch-show-pipe-part (message-id nth &optional filename content-type)
+  (notmuch-with-temp-part-buffer message-id nth
+    (let ((handle (mm-make-handle (current-buffer) (list content-type))))
+      (mm-pipe-part handle))))
+
 (defun notmuch-show-multipart/*-to-list (part)
   (mapcar (lambda (inner-part) (plist-get inner-part :content-type))
 	  (plist-get part :content)))
@@ -1874,6 +1880,10 @@ the user (see `notmuch-show-stash-mlarchive-link-alist')."
   (interactive)
   (notmuch-show-part-button-internal button #'notmuch-show-interactively-view-part))
 
+(defun notmuch-show-part-button-pipe (&optional button)
+  (interactive)
+  (notmuch-show-part-button-internal button #'notmuch-show-pipe-part))
+
 (defun notmuch-show-part-button-internal (button handler)
   (let ((button (or button (button-at (point)))))
     (if button
-- 
1.7.10