Function tab

pub fn tab<I>() -> Tab<I>
where
    I: Stream<Item = char>,
    I::Error: ParseError<I::Item, I::Range, I::Position>,

Parses a tab character ('\t').

use combine::Parser;
use combine::parser::char::tab;
assert_eq!(tab().parse("\t"), Ok(('\t', "")));
assert!(tab().parse(" ").is_err());