[PATCH] emacs: add stash support for git send-email command line

[Jani Nikula]

Stash From/To/Cc as --to/--to/--cc, respectively, and Message-Id as
--in-reply-to, suitable for pasting to git send-email command line.
---
 emacs/notmuch-show.el | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)

diff --git a/emacs/notmuch-show.el b/emacs/notmuch-show.el
index a9974826e824..328c93ba0584 100644
--- a/emacs/notmuch-show.el
+++ b/emacs/notmuch-show.el
@@ -1274,6 +1274,7 @@ reset based on the original query."
     (define-key map "t" 'notmuch-show-stash-to)
     (define-key map "l" 'notmuch-show-stash-mlarchive-link)
     (define-key map "L" 'notmuch-show-stash-mlarchive-link-and-go)
+    (define-key map "G" 'notmuch-show-stash-git-send-email)
     (define-key map "?" 'notmuch-subkeymap-help)
     map)
   "Submap for stash commands")
@@ -2125,6 +2126,30 @@ the user (see `notmuch-show-stash-mlarchive-link-alist')."
   (notmuch-show-stash-mlarchive-link mla)
   (browse-url (current-kill 0 t)))
 
+(defun notmuch-show-stash-git-helper (addresses prefix)
+  "Escape, trim, and add PREFIX to each address in list of ADDRESSES."
+  (when addresses
+    (mapconcat (lambda (x)
+		 (concat prefix "\""
+			 ;; escape double-quotes
+			 (replace-regexp-in-string
+			  "\"" "\\\\\""
+			  ;; trim leading and trailing spaces
+			  (replace-regexp-in-string
+			   "\\(^ *\\| *$\\)" ""
+			   x)) "\" "))
+	       addresses "")))
+
+(defun notmuch-show-stash-git-send-email ()
+  "Copy From/To/Cc/Message-Id of current message to kill-ring in a form suitable for pasting to git send-email command line."
+  (interactive)
+  (notmuch-common-do-stash
+   (concat
+    (notmuch-show-stash-git-helper (message-tokenize-header (notmuch-show-get-from)) "--to=")
+    (notmuch-show-stash-git-helper (message-tokenize-header (notmuch-show-get-to)) "--to=")
+    (notmuch-show-stash-git-helper (message-tokenize-header (notmuch-show-get-cc)) "--cc=")
+    (concat "--in-reply-to=\"" (notmuch-show-get-message-id t) "\""))))
+
 ;; Interactive part functions and their helpers
 
 (defun notmuch-show-generate-part-buffer (message-id nth)
-- 
2.1.1