message-default-mail-headers not working in notmuch 0.22

[Michal Sojka]

On Fri, Apr 29 2016, David Edmondson wrote:
> On Fri, Apr 29 2016, Sebastian Fischmeister wrote:
>> After upgrading to notmuch 0.22, my emacs config seems broken:
>>
>> (setq message-default-mail-headers "Reply-to: me at example.com\nBcc: me at example.com")
>>
>> When creating a new mail, it has no header other than "To:" and
>> "Subject:".
>>
>> Since I cannot find any item in the NEWS related to this release, is
>> this expected behaviour?
>
> No, it's not intended. Please try this patch:
>
> diff --git a/emacs/notmuch-mua.el b/emacs/notmuch-mua.el
> index 0445975..399e138 100644
> --- a/emacs/notmuch-mua.el
> +++ b/emacs/notmuch-mua.el
> @@ -338,7 +338,10 @@ modified. This function is notmuch addaptation of
>  	  ;; We need to convert any string input, eg from rmail-start-mail.
>  	  (dolist (h other-headers other-headers)
>  	    (if (stringp (car h)) (setcar h (intern (capitalize (car h))))))))
> -	(args (list yank-action send-actions)))
> +	(args (list yank-action send-actions))
> +	;; Cause `message-setup-1' to do things relevant for mail,
> +	;; such as observe `message-default-mail-headers'.
> +	(message-this-is-mail t))

Yes, this seems to be reasonable thing to do. Thanks.

-Michal