pub fn parse_preprocessed_with(
preprocessed: &Preprocessed,
dialect: Dialect,
) -> ParseExpand description
Parse a preprocessed stream under a chosen dialect.
parse_preprocessed admits every vendor extension. This is the
entry --strict reaches: Dialect::STRICT turns every vendor
construct from a warning into an error, so a file that gets through
is one every other vendor’s front end reads too. Spec §3.5.