On Fri, 19 Sep 2003 14:27:19 +0100 "Simon Marlow" wrote:

...

We could make it understand comments, but that adds extra complication (nested comments, maximal munch for '--' comments, etc.).

Hmm.

Nested comments yes, I see how that'd be a problem.

But surely it wouldn't be hard to ignore lines matching "^\s*--"?

A technical point: matching line comments is a bit more tricky than that. Eg. GHC's lexer uses the following regular expression: "--"\-* ([^$symbol] .*)? Actually the easy way to do this would be to invoke the lexer to look for the OPTIONS pragma. I think we can now do this with the new lexer - I'll look into it. Cheers, Simon