[PATCH] emacs: use the originating buffer's working directory for pipe

[David Bremner]

Jani Nikula <jani at nikula.org> writes:
>
> Always use the current show buffer's working directory for piping. The
> user can check that with M-x pwd and change it with M-x cd. This is
> consistent with notmuch-show-pipe-part.
>

pushed,

d