> Quick question, you mention the ability to opt-out of the space-insensitivity, where might one find this?

Yes, undocumented. Use the '>' operator.

You know, I introduced space-insensitivity recently, to simplify some rules and it keeps biting me back.

For example

Line <- (!EOL .)* EOL

The catch is, the (!EOL .) sequence accepts spaces (so, line terminators) between the !EOL and the .

Crap.

So, I keep writing

Line <- (!EOL > .)* EOL

And I'm more and more convinced that ws a bbad move on my part. Or, at least, give the user a way to opt-out for an entire rule.