[boost] Re: Interest in a fast lexical analyser compatible with Spirit

"The Hapy library would not exist if Spirit would generate correct parsers by default..."

Whoa. Them's fightin' words!

I believe the author is referring to incomplete backtracking (not backtracking past an accepted token when there's a failure later on). It's something the Spirit gurus have taken into consideration for Spirit 2, AFAIK. Dave