Add example that parses valid email addressed.

[Luckey-Elijah]

Email addresses can be tricky to handle with regex. I think an idiomatic example written with petitparser would be great for reference.

[renggli]

There is a basic example here in the benchmarks (with regex comparison):

dart-petitparser-examples/bin/benchmark/regexp_benchmark.dart

Lines 57 to 63 in 58b3b47

	seq5(
	letter().plus(),
	char('@'),
	letter().plus(),
	char('.'),
	letter().repeat(2, 3),
	),

The URL parser is probably a more complete example to extract e-mail addresses, but it requires the scheme: mailto://foo@bar.com. Maybe you can start there?

[Luckey-Elijah]

Thank you @renggli this is a good example and what I am looking for 😄