Allow comments between intersection types and by-ref params

[iluuu1994]

@olleharstedt Can you test if this works for you?

[olleharstedt]

As mentioned in the discussion on the chat, there's no non-greedy setting for re2c? For me it's totally fine to instead have

OPTIONAL_WHITESPACE_AND_COMMENTS ({OPTIONAL_WHITESPACE}|{SINGLE_LINE_COMMENT}|{HASH_COMMENT})*

without the MULTI_LINE_COMMENT. But maybe such an inconsistency would not be appreciated?

I can also try https://stackoverflow.com/questions/11898998/how-can-i-write-a-regex-which-matches-non-greedy

[iluuu1994]

Allowing half the comments seems worse to me than no comments, as it's completely incomprehensive for end users...

[iluuu1994]

I don't think this is feasible until re2c properly supports lazy matching.