Symbol/Keyword/String(?) prefix/suffix matches

[SevereOverfl0w]

I'd love to be able to use a pattern like (def$* $&) to match all symbols starting with def at the beginning of a list form.

[jtrunick]

Similarly I'd like to match "symbols ending with" to find usages of a function that might be aliased in it's usages. ($symbol:myfn $&) would match (lib/myfn expr) or (myfn expr).