Lars Ingebrigtsen <larsi@gnus.org> writes:

> Felix Dietrich <felix.dietrich@sperrhaken.name> writes:
>
>> The first, relating to readability: I found it quit difficult to follow
>> the flow of the functionʼs code due to its nesting and idiosyncratic
>> order of condition checking.  I want to, therefore, propose a
>> restructured version, which I believe to be functionally equivalent.
>
> Yes, the code is pretty confusing...  so reading the patches, I'm not
> quite sure whether the new one is equivalent or not.  So I think we'd
> want to have a number of tests in mailcap-tests.el to test that the
> results really are equivalent before and after the change, too.

I have written a couple of test cases.  Let me know if this is what you
had in mind.