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something has to matter :-) after making commas, braces, brackets, and quotes optional linebreaks were what's left...

Is there a meaningful difference between linebreaks and other whitespace if you have no comments?

I understand that it might constitute a breaking change now to delimit the comments since:

# HOCON is great you can have #comments!

would now be a compile error but I'm interested if there's another issue that prevented optionally delimited comments in the original spec.