pub fn lwsp<I, E>(input: I) -> IResult<I, I, E>where
I: Clone + Offset + PartialEq + InputIter + Slice<RangeTo<usize>> + Slice<RangeFrom<usize>> + InputLength,
<I as InputIter>::Item: AsChar,
E: ParseError<I>,Expand description
Use of this linear-white-space rule permits lines containing only white space that are no longer legal in mail headers and have caused interoperability problems in other contexts.
Do not use when defining mail headers and use with caution in other contexts.
LWSP = *(WSP / CRLF WSP)