[PATCH] emacs: stash bugfix

[Austin Clements]

Quoth Mark Walters on Dec 02 at 10:11 am:
> Currently an attempt to stash a non-existent field (eg cc when not
> present) throws an error. Catch this case and give the user a warning
> message.
> 
> ---
> While messing around with notmuch-pick key bindings I found the
> following bug. The easiest way I have found to trigger it is cc
> (stash-cc) in show mode on a message with no cc header.
> 
> Best wishes
> 
> Mark
> 
>  emacs/notmuch-lib.el |    7 +++++--
>  1 files changed, 5 insertions(+), 2 deletions(-)
> 
> diff --git a/emacs/notmuch-lib.el b/emacs/notmuch-lib.el
> index 1d0ec17..c7d8e02 100644
> --- a/emacs/notmuch-lib.el
> +++ b/emacs/notmuch-lib.el
> @@ -183,8 +183,11 @@ user-friendly queries."
>  
>  (defun notmuch-common-do-stash (text)
>    "Common function to stash text in kill ring, and display in minibuffer."
> -  (kill-new text)
> -  (message "Stashed: %s" text))
> +  (if text
> +      (progn
> +	(kill-new text)
> +	(message "Stashed: %s" text))
> +    (message "Warning: Nothing to stash!")))

Without the unnecessary "Warning:" bit of the message, LGTM.