pub fn escaped<Input, Error, F, G, O1, O2>(
    normal: F,
    control_char: char,
    escapable: G
) -> impl FnMut(Input) -> IResult<Input, Input, Error> where
    Input: Clone + Offset + InputLength + InputTake + InputTakeAtPosition + Slice<RangeFrom<usize>> + InputIter,
    <Input as InputIter>::Item: AsChar,
    F: Parser<Input, O1, Error>,
    G: Parser<Input, O2, Error>,
    Error: ParseError<Input>, Expand description
Matches a byte string with escaped characters.
- The first argument matches the normal characters (it must not accept the control character)
- The second argument is the control character (like \in most languages)
- The third argument matches the escaped characters
Example
use nom::bytes::streaming::escaped;
use nom::character::streaming::one_of;
fn esc(s: &str) -> IResult<&str, &str> {
  escaped(digit1, '\\', one_of("\"n\\"))(s)
}
assert_eq!(esc("123;"), Ok((";", "123")));
assert_eq!(esc("12\\\"34;"), Ok((";", "12\\\"34")));