I was scanning the GHC source by eye, and misunderstood a comment about the "parsing monad". (Alex, the equivalent of lex, uses monads to describe actions, but

I was scanning the GHC source by eye, and misunderstood a comment about the "parsing monad". (Alex, the equivalent of lex, uses monads to describe actions, but I thought that monads were the main interface to the lexer.) Thanks for the correction.