Hi all,

in current cvs trunk, gnus' mailcap parsing has been corrupted. The
problem is that mailcap-viewer-passes-test caches its results even if
the symbol test is nil. This makes (nil nil) appear in
mailcap-viewer-test-cache and all subsequent tests for viewers that do
have a test clause of any kind will fail in consequence. The little
patch attached fixes this problem.

Additionally, I'd like to have the tests performed in
mailcap-mailcap-entry-passes-test incorporated into the caching
system. That way, you would just have to flush the cache whenever
something changes in the environment; just consider the case when you
connect to a screen session on a remote machine with emacs already
running. What do you think about that?

Regards,

Elias