[Haskell-cafe] Re: [Parsec] Backtracking with try does not work for me?

On Mon, Jul 31, 2006 at 12:57:04PM +0200, Udo Stenzel wrote a message of 59 lines which said:

Now 'optional x' always succeeds, so the 'try' is useless where you placed it. You need to 'try' the argument to 'optional':

It works, too. Many thanks for the code and the explanation.

You could also factor your grammar

It is a language I do not control, so I prefer to keep the grammar as close as possible from the official specification.