[Haskell-cafe] Package for regular expressions

[Daniil Frumin]

Hi, everyone!

Due to the recent discussions discussions about regex- packages on
libraries@ and cafe, as well as due to the unicode bug in darcs that
Erik Kow and I have stumbled upon I wanted to ask the Haskell
community the following:

What is up with the regular expression packages? Which one is the go-to package?
There are really a bunch of them around (regex-compat, regex-tdfa,
regex-posicx, regex-compat-tdfa,, ..) and it's not obvious at all what
is the difference between them and which one should I use.

Any advice or comments are appreciated.

Sincerely yours,
-- Daniil Frumin