Multiple simultaneous time signatures?

[Matthew Hiller]

        Does Lilypond support multiple simultaneous time signatures (e.g.,
one part written in 3/4 against another part in 4/4)? I've seen modern
pieces that are notated that way.

        I'm asking mostly idly at the moment -- I may eventually have to
implement such a thing in Denemo, but would be happier not.

        I've tried the obvious way of doing it w/ Lily 1.2.17.uu1 (put a
\time 3/4; in one part and a \time 4/4; in the next), but that didn't work
- perhaps there's a non-obvious way of doing this?

Matt