Function nom::character::complete::alpha0

pub fn alpha0<T, E: ParseError<T>>(input: T) -> IResult<T, T, E> where
    T: InputTakeAtPosition,
    <T as InputTakeAtPosition>::Item: AsChar, 

Recognizes zero or more lowercase and uppercase ASCII alphabetic characters: a-z, A-Z

complete version: Will return the whole input if no terminating token is found (a non alphabetic character).

Example

fn parser(input: &str) -> IResult<&str, &str> {
    alpha0(input)
}

assert_eq!(parser("ab1c"), Ok(("1c", "ab")));
assert_eq!(parser("1c"), Ok(("1c", "")));
assert_eq!(parser(""), Ok(("", "")));