fn option_bool_parser<'a>(input: &mut Input<'a>) -> PResult<'a, bool>Expand description
Recognizes the ! boolean operator in option names.
This parser does not fully consume its input.
It also expects the package name to be there, if the ! does not exist.
§Format
The parser expects a ! or either one of ASCII alphanumeric character, hyphen, dot, or
underscore.
§Errors
If the input string does not match the expected format, an error will be returned.