bug#25571: 24.5; Check if there are hunks before kill or refine a hunk

[Tino Calancha]

Tino Calancha <tino.calancha@gmail.com> writes:

> emacs -Q:
> ; Put following content in a buffer in diff-mode:
> ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; 
> START
> diff --git a/a b/a
> index 184cbf6..d2d9a24 100644
> --- a/a
> +++ b/a
> @@ -1,2 +1,2 @@
> -I have a foo in my bar.
> +I have a qux in my bar.
>  Me too.
> ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; 
> END
I forgot the receipt; do the following:
< ; Go to beginning of buffer
M-n M-k
M-n ; Shows: 'No next hunk'.
M-k ; Shows: "Can't find the beginning of the file".
;; It would be more clear a message like: 'No more hunks'.