Convert a character to a backslash-u escape
Convert a character to a backslash-u escape
Convert a character digit to an Int according to given base, -1 if no success
Convert a character digit to an Int according to given base, -1 if no success
Is character a line break?
Is character a line break?
Can character form part of a doc comment variable $xxx?
Can character form part of a doc comment variable $xxx?
Is character a whitespace character (but not a new line)?
Is character a whitespace character (but not a new line)?