[PATCH v2] emacs: add support for stashing the thread id in show view

[Jani Nikula]

Add a prefix argument to notmuch-show-stash-message-id to stash thread
id instead of message id.
---
 emacs/notmuch-show.el |   14 ++++++++++----
 1 file changed, 10 insertions(+), 4 deletions(-)

diff --git a/emacs/notmuch-show.el b/emacs/notmuch-show.el
index 4d6c014..658a2be 100644
--- a/emacs/notmuch-show.el
+++ b/emacs/notmuch-show.el
@@ -1901,10 +1901,16 @@ thread from search."
   (interactive)
   (notmuch-common-do-stash (notmuch-show-get-from)))
 
-(defun notmuch-show-stash-message-id ()
-  "Copy id: query matching the current message to kill-ring."
-  (interactive)
-  (notmuch-common-do-stash (notmuch-show-get-message-id)))
+(defun notmuch-show-stash-message-id (&optional stash-thread-id)
+  "Copy id: query matching the current message to kill-ring.
+
+If invoked with a prefix argument (or STASH-THREAD-ID is
+non-nil), copy thread: query matching the current thread to
+kill-ring."
+  (interactive "P")
+  (if stash-thread-id
+      (notmuch-common-do-stash notmuch-show-thread-id)
+    (notmuch-common-do-stash (notmuch-show-get-message-id))))
 
 (defun notmuch-show-stash-message-id-stripped ()
   "Copy message ID of current message (sans `id:' prefix) to kill-ring."
-- 
1.7.10.4