Re: Minor grumbles: PackedString and Regex

[George Russell]

Sven Panne wrote:
> Could you be a little bit more precise, e.g. the signatures of which
> functions should be changed and how?
All the documented functions in the Regex module which return
an "IO a" might as well return an "a".  For example,

recompile_pattern :: PackedString -> Bool -> Bool -> PrimIO PatBuffer
might as well return a PatBuffer.

re_match :: PatBuffer -> PackedString -> Int -> Bool -> PrimIO (Maybe REmatch)
might as well return a Maybe REmatch.  And so on.