From c13ff402c42143941010cd03bd57658d42f0df7d Mon Sep 17 00:00:00 2001
From: Tomi Ollila <tomi.ollila@iki.fi>
Date: Sat, 7 May 2016 22:03:11 +0300
Subject: [PATCH] emacs: add function to resend message to new recipients

The new function notmuch-show-message-resend re-sends
message to new recipients using #'message-resend.

Recipients are read from minibuffer as a comma-separated
string (with some keyboard support including tab completion).

Final confirmation before sending is asked.
---
 emacs/notmuch-address.el | 19 +++++++++++++++++++
 emacs/notmuch-show.el    |  8 ++++++++
 2 files changed, 27 insertions(+)

diff --git a/emacs/notmuch-address.el b/emacs/notmuch-address.el
index aafbe5fb..8b79d340 100644
--- a/emacs/notmuch-address.el
+++ b/emacs/notmuch-address.el
@@ -249,6 +249,25 @@ called when harvesting finishes."
 
 ;;
 
+(defun notmuch-address-from-minibuffer (prompt)
+  (if (not notmuch-address-command)
+      (read-string prompt)
+    (let ((rmap (copy-keymap minibuffer-local-map))
+	  (omap minibuffer-local-map))
+      ;; Configure TAB to start completion when executing read-string.
+      ;; "Original" minibuffer keymap is restored just before calling
+      ;; notmuch-address-expand-name as it may also use minibuffer-local-map
+      ;; (completing-read probably does not but if something else is used there).
+      (define-key rmap (kbd "TAB") (lambda ()
+				     (interactive)
+				     (let ((enable-recursive-minibuffers t)
+					   (minibuffer-local-map omap))
+				       (notmuch-address-expand-name))))
+      (let ((minibuffer-local-map rmap))
+	(read-string prompt)))))
+
+;;
+
 (provide 'notmuch-address)
 
 ;;; notmuch-address.el ends here
diff --git a/emacs/notmuch-show.el b/emacs/notmuch-show.el
index 5d9b7b45..4b8c66fd 100644
--- a/emacs/notmuch-show.el
+++ b/emacs/notmuch-show.el
@@ -1855,6 +1855,14 @@ any effects from previous calls to
       (error "No open messages to forward."))
     (notmuch-mua-new-forward-messages open-messages prompt-for-sender)))
 
+(defun notmuch-show-resend-message (addresses)
+  "Resend the current message."
+  (interactive (list (notmuch-address-from-minibuffer "Resend to: ")))
+  (when (y-or-n-p (concat "Confirm resend to " addresses " "))
+    (notmuch-show-view-raw-message)
+    (message-resend addresses)
+    (notmuch-bury-or-kill-this-buffer)))
+
 (defun notmuch-show-next-message (&optional pop-at-end)
   "Show the next message.