[xmonad] fuzzy/partial matching on prompts?

[Eric Abrahamsen]

I haven't been able to find anything in the docs on this… All I want is
for certain prompts to use fuzzy or partial matching: the XMondad.Topic
switchTopic function was what prompted this, but I see plenty of cases
(dzen) where it would be very nice. But particularly for switching
topic/workspaces: it's a pain having to type out whole names, even when
the list has already been narrowed to a single member…

There's probably some configuration option I'm missing—does anyone have
any pointers?

Thanks,
Eric