Function complete_escaped_internal

fn complete_escaped_internal<'a, I, Error, F, G, O1, O2>(
    input: &mut I,
    normal: &mut F,
    control_char: char,
    escapable: &mut G,
) -> PResult<<I as Stream>::Slice, Error>
where
    I: StreamIsPartial + Stream + Compare<char> + 'a,
    F: Parser<I, O1, Error>,
    G: Parser<I, O2, Error>,
    Error: ParserError<I>,