On Feb 2, 2011, at 00:25 , Kaspar Schiess wrote:

> parslet is a Parsing Expression Grammar based[1] parser generator =
library. Uff. Now that is out of our system, here goes what it really =
does: It makes writing parsers pleasant for the rest of us. No code =
generation, clear access to data, unit testable.
>=20
> * http://kschiess.github.com/parslet/index.html
> * https://github.com/kschiess/parslet
>=20
> Installation:
>=20
> gem install parslet
>=20
> Changes:
>=20
> * For deep grammars, this release is several orders of magnitude
>  faster. Really! Benchmark at [2].

That's really awesome work!