NEWLINE sentinel behavior in CPython's PEG grammar

I am writing a Rust version of Python for fun and I am at the parser stage
of development.

I copied and modified a PEG grammar ruleset from another open source
project and I've already noticed some problems (ex Newline vs NL) with how
they transcribed things.

I am suspecting that CPython's grammar NEWLINE is a builtin rule for the
parser that is something like `(Newline+ | NL+ ) {NOP}` but wanted to
sanity check if that is right before I figure out how to hack in a NEWLINE
rule and update my grammar ruleset.