This version gets a +1 from me

Mark


On Sun, 01 Sep 2013, Jani Nikula <jani@nikula.org> wrote:
> In reply, insert quotable parts using notmuch-show-insert-bodypart
> instead of calling notmuch-mm-display-part-inline directly to render
> the quoted parts as they are rendered in show view.
>
> We use a temp buffer to not leak text properties from the show
> renderer into the reply. This way we also don't need to worry about
> narrowing or point placement. Credits to Mark Walters
> <markwalters1009@gmail.com> and Austin Clements <amdragon@MIT.EDU> for
> getting this part straight.
>
> The notable change is that replies to text/calendar parts quote the
> pretty printed output of icalendar-import-buffer rather than the ugly
> raw vcalendar.
>
> ---
>
> v2: use (narrow-to-region (point-min) (point)) in
> notmuch-mua-insert-quotable-part instead of adding the ugly recenter
> in notmuch-mua-reply. Thanks to Austin and Mark for figuring this out.
>
> v3: Incorporate id:87eh98twws.fsf@qmul.ac.uk from Mark
> ---
>  emacs/notmuch-mua.el  | 17 +++++++++++------
>  emacs/notmuch-show.el | 18 +++++++++++++-----
>  2 files changed, 24 insertions(+), 11 deletions(-)
>
> diff --git a/emacs/notmuch-mua.el b/emacs/notmuch-mua.el
> index 2baae5f..ff8149b 100644
> --- a/emacs/notmuch-mua.el
> +++ b/emacs/notmuch-mua.el
> @@ -28,6 +28,8 @@
>  
>  (eval-when-compile (require 'cl))
>  
> +(declare-function notmuch-show-insert-bodypart "notmuch-show" (msg part depth &optional hide))
> +
>  ;;
>  
>  (defcustom notmuch-mua-send-hook '(notmuch-mua-message-send-hook)
> @@ -128,12 +130,15 @@ list."
>  	  collect part))
>  
>  (defun notmuch-mua-insert-quotable-part (message part)
> -  (save-restriction
> -    (narrow-to-region (point) (point))
> -    (notmuch-mm-display-part-inline message part (plist-get part :id)
> -				    (plist-get part :content-type)
> -				    notmuch-show-process-crypto)
> -    (goto-char (point-max))))
> +  ;; We don't want text properties leaking from the show renderer into
> +  ;; the reply so we use a temp buffer. Also we don't want hooks, such
> +  ;; as notmuch-wash-*, to be run on the quotable part so we set
> +  ;; notmuch-show-insert-text/plain-hook to nil.
> +  (insert (with-temp-buffer
> +	    (let ((notmuch-show-insert-text/plain-hook nil))
> +	      ;; Show the part but do not add buttons.
> +	      (notmuch-show-insert-bodypart message part 0 'no-buttons))
> +	    (buffer-substring-no-properties (point-min) (point-max)))))
>  
>  ;; There is a bug in emacs 23's message.el that results in a newline
>  ;; not being inserted after the References header, so the next header
> diff --git a/emacs/notmuch-show.el b/emacs/notmuch-show.el
> index 2896aae..904b98e 100644
> --- a/emacs/notmuch-show.el
> +++ b/emacs/notmuch-show.el
> @@ -844,7 +844,11 @@ message at DEPTH in the current thread."
>  (defun notmuch-show-insert-bodypart (msg part depth &optional hide)
>    "Insert the body part PART at depth DEPTH in the current thread.
>  
> -If HIDE is non-nil then initially hide this part."
> +HIDE determines whether to show or hide the part and the button
> +as follows: If HIDE is nil, show the part and the button. If HIDE
> +is t, hide the part initially and show the button. If HIDE is
> +'no-buttons, show the part but do not add any buttons (this is
> +useful for quoting in replies)."
>  
>    (let* ((content-type (downcase (plist-get part :content-type)))
>  	 (mime-type (or (and (string= content-type "application/octet-stream")
> @@ -854,15 +858,19 @@ If HIDE is non-nil then initially hide this part."
>  			content-type))
>  	 (nth (plist-get part :id))
>  	 (beg (point))
> -	 ;; We omit the part button for the first (or only) part if this is text/plain.
> -	 (button (unless (and (string= mime-type "text/plain") (<= nth 1))
> +	 ;; Hide the part initially if HIDE is t.
> +	 (show-part (not (equal hide t)))
> +	 ;; We omit the part button for the first (or only) part if
> +	 ;; this is text/plain, or HIDE is 'no-buttons.
> +	 (button (unless (or (equal hide 'no-buttons)
> +			     (and (string= mime-type "text/plain") (<= nth 1)))
>  		   (notmuch-show-insert-part-header nth mime-type content-type (plist-get part :filename))))
>  	 (content-beg (point)))
>  
>      ;; Store the computed mime-type for later use (e.g. by attachment handlers).
>      (plist-put part :computed-type mime-type)
>  
> -    (if (not hide)
> +    (if show-part
>          (notmuch-show-insert-bodypart-internal msg part mime-type nth depth button)
>        (button-put button :notmuch-lazy-part
>                    (list msg part mime-type nth depth button)))
> @@ -875,7 +883,7 @@ If HIDE is non-nil then initially hide this part."
>        (insert "\n"))
>      ;; We do not create the overlay for hidden (lazy) parts until
>      ;; they are inserted.
> -    (if (not hide)
> +    (if show-part
>  	(notmuch-show-create-part-overlays button content-beg (point))
>        (save-excursion
>  	(notmuch-show-toggle-part-invisibility button)))
> -- 
> 1.8.4.rc3