[PATCH] Fix format_headers_sprinter to return all headers

[David Bremner]

Jani Nikula <jani at nikula.org> writes:

> On Sat, 09 Nov 2019, Johan Parin <johanparin at gmail.com> wrote:
>> Modify format_headers_sprinter so that it returns all headers in the
>> sexp, instead of a fixed set of headers.
>
> I have to deal with plenty of long threads that already take a very long
> time to open in notmuch-emacs. How's this going to impact the emacs
> interface performance? For example the patch mail I'm replying to has
> more header content than body content. There are tons of headers that I
> can't imagine being useful to anyone.

 Can we benchmark this somehow? I think we have suitable threads in the
 LKML corpus, but the challenge is timing emacs in some sensible way.