-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Simon Marlow wrote:
I definitely think that -1# should be parsed as a single lexeme. Presumably it was easier at the time to do it the way it is, I don't remember exactly.
I'd support a warning for use of prefix negation, or alternatively you could implement the Haskell' proposal to remove prefix negation completely - treat the unary minus as part of a numeric literal in the lexer only. This would have to be optional for now, so that we can continue to support Haskell 98 of course.
Cheers, Simon
Yes, I've been thinking about how to implement both - details will come later when I have more time. I think I have a reasonably working idea of how to divide up the cases for warnings for ambiguous-looking use of both infix and prefix minus, as well as actual syntax changes... Isaac -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.3 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFGHLqHHgcxvIWYTTURAu4YAJ9v7fd8tkJLztqQxCblRGZy21UxfwCgn7++ OvLrEoLJtP9Uq8oQGeVhwA8= =hTdv -----END PGP SIGNATURE-----