[project @ 2002-02-12 03:52:08 by chak]
This fixes a problem with the recent clean up in the parsing of type declarations. The cleaned up version was correct by H98 (I think), but unfortunately won't compile the Prelude anymore. I made the definition a little bit more liberal as follows: - In `tycl_hdr' allow `gtycon' instead of just `tycon' for the defined type constructor. This allows beyond H98 special syntax like "" etc as well as tycon ops in parenthesis. Moreover, it allows qualified names, but the renamer flags the latter as errors. - Allow `gtycon' instead of only `qtycon' for the class name in definitions of the form `Eq a => T a' to avoid a whole list of s/r conflicts. (I have *not* checked that the renamer flags misuse, but I would expect that it does.) ToDo: I think, the renamer should raise an error for all these additional forms *unless* -fglasgow-exts is given. In PrelBase, I needed to replace the infix notation by prefix notation in the definition of `:+:' and `:*:'.