Forwarding a mail, with a non-ASCII signature

[David Edmondson]

On Sun, Nov 16 2014, Lele Gaifax wrote:
> Hi all,
>
> as you can see below, my signature contains some non-ASCII characters,
> and it is stored as UTF-8 (I have `(prefer-coding-system 'utf-8)` in my
> .emacs.el) in my home as ~/.signature.
>
> Recently I started using notmuch with Emacs as the main MUA, using
> message-mode to send emails. I'm *very* satisfied, BTW!
>
> Everything works great, except that when I "forward" an email message:
> in that case, the "*unsent mail*" buffer contains the original message
> within a "#mml" tag, followed by my signature, apparently appended as
> binary (e.g. instead of "vivrò" I see "vivr\303\262"). When I try to
> send it, I get the "Unreadable characters" prompt...
>
> I quickly inspected what notmuch-show-forward-message does, but AFAICT
> it does very little, delegating most of the work to message-mode: but
> doing the same from Gnus works ok, so I must be missing something.
>
> I also tried tweaking the message-default-charset, changing it from nil
> to utf-8, with the very same result.
>
> I'm using Emacs 24.4.51 compiled a few days ago, if that matters.

Could you try this patch please?

diff --git a/emacs/notmuch-show.el b/emacs/notmuch-show.el
index 6e03f1e..1592ca9 100644
--- a/emacs/notmuch-show.el
+++ b/emacs/notmuch-show.el
@@ -235,9 +235,9 @@ For example, if you wanted to remove an \"unread\" tag and add a
        (let ((buf (generate-new-buffer (concat "*notmuch-msg-" id "*"))))
          (with-current-buffer buf
 	   (let ((coding-system-for-read 'no-conversion))
-	     (call-process notmuch-command nil t nil "show" "--format=raw" id)
-	     , at body)
-	   (kill-buffer buf))))))
+	     (call-process notmuch-command nil t nil "show" "--format=raw" id))
+	   , at body)
+	 (kill-buffer buf)))))
 
 (defun notmuch-show-turn-on-visual-line-mode ()
   "Enable Visual Line mode."