[PATCH] emacs: add mimetype completions to searches

[Jani Nikula]

On Tue, 27 Sep 2016, Mark Walters <markwalters1009 at gmail.com> wrote:
> When doing the patch for commit
> f94921520778ae4005500f5d1b943e2d4ddd3b2a emacs: show: let the user
> override the mime-type of an attachment, I discovered how to do
> mimetype completion (in particular where to get a list of mimetypes),
> so we may as well add this completion for searches too.

Any ideas how to get a list of mime types in shell, so I could do the
same in bash completion without hard-coding some limited list?

BR,
Jani.