Comment 1 for bug 541119

This could be a little tricky to fix, as the macro expansion is currently done before we get into the lex code. Luckily we use the lexer to throw away comments rather than the yacc grammar, so it might be do-able that way. The danger is likely to be that some things which used to work won't any more, e.g. using a macro to provide both a field name and value to a record definition. Alternatively we'd have to move the comment stripping into the input buffer management code, which is not nice.

Any other suggestions?