Is it expected that email validation is a bit incomplete?

[qrilka]

In

jsonschema-rs/jsonschema/src/keywords/format.rs

Lines 122 to 140 in 79e35a2

	fn is_valid_email(email: &str) -> bool {
	if let Some('.') = email.chars().next() {
	// dot before local part is not valid
	return false;
	}
	// This loop exits early if it finds `@`.
	// Therefore, match arms examine only the local part
	for (a, b) in email.chars().zip(email.chars().skip(1)) {
	match (a, b) {
	// two subsequent dots inside local part are not valid
	// dot after local part is not valid
	('.', '.') | ('.', '@') => return false,
	// The domain part is not validated for simplicity
	(_, '@') => return true,
	(_, _) => continue,
	}
	}
	false
	}

I see that email validation doesn't check for non-printable characters and explicitly says that domain validation is not done

[Stranger6667]

That is deliberately simplistic, but I am open to extending it. From the spec:

When the implementation is configured for assertion behavior, it:
SHOULD provide an implementation-specific best effort validation for each format attribute defined below;
MAY choose to implement validation of any or all format attributes as a no-op by always producing a validation result of true;