Mark Walters <markwalters1009@gmail.com> writes:

> Headers of more than 998 characters should be folded when sending.
> However, until recently, emacs did not do this.
>
> This adds a (known broken) test for this when sending messages in
> emacs. We will backport the fix to notmuch-emacs in the next
> changeset.

I should have thought about this sooner, but this test is actually a bit
fragile. If the folding width changes for some reason in emacs, then the
test will break. I guess it's a corner case that we can live with.