[PATCH 2/2] emacs: add function to resend message to new recipients

[Tomi Ollila]

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.
---

Note that notmuch-show-message-resend is not (yet) bound to any
keybindings in notmuch-show-mode-map (nor notmuch-tree-mode-map!).

I remember that Emacs VM might have had 'b' bound to this functionality
but I cannot be sure. A few weeks ago I looked gnus, rmail & mh-e to
figure out whether 'b' would have been bound to similar functionality
there but I cannot find it...

A future patch will be done when we've decide where to bind this.

Also, I "simplified" keybindings in notmuch-address-from-minibuffer --
latest version used to bind ',' in both minibuffer-local-map and
minibuffer-local-completion-map to do some magic. I'll send an RFC
patch having that later.

 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 6c93b2a7a820..b08a78f2db46 100644
--- a/emacs/notmuch-address.el
+++ b/emacs/notmuch-address.el
@@ -119,4 +119,23 @@ (defun notmuch-address-locate-command (command)
 
 ;;
 
+(defun notmuch-address-from-minibuffer (prompt)
+  (if (not (notmuch-address--message-insinuated))
+      (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 "\C-i" (lambda () ;; TAB
+			       (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)
diff --git a/emacs/notmuch-show.el b/emacs/notmuch-show.el
index 848ec2c870c4..62aa696224ca 100644
--- a/emacs/notmuch-show.el
+++ b/emacs/notmuch-show.el
@@ -1806,6 +1806,14 @@ (defun notmuch-show-forward-message (&optional prompt-for-sender)
   (with-current-notmuch-show-message
    (notmuch-mua-new-forward-message prompt-for-sender)))
 
+(defun notmuch-show-resend-message (addresses)
+  "Resend the current message."
+  (interactive (list (notmuch-address-from-minibuffer "Resend to: ")))
+  (when (yes-or-no-p (concat "Confirm resend to " addresses " "))
+    (notmuch-show-view-raw-message)
+    (message-resend addresses)
+    (bury-buffer)))
+
 (defun notmuch-show-next-message (&optional pop-at-end)
   "Show the next message.
 
-- 
2.0.0