Convert a character to a backslash-u escape
Convert a character digit to an Int according to given base, -1 if no success
Can character form part of an alphanumeric Scala identifier?
Can character start an alphanumeric Scala identifier?
Is character a line break?
Is character a line break?
Can character form part of a Scala operator name?
Is character a math or other symbol in Unicode?
Is character a whitespace character (but not a new line)?
Contains constants and classifier methods for characters