https://issues.dlang.org/show_bug.cgi?id=18879
--- Comment #1 from Rainer Schuetze <r.sagita...@gmx.de> --- `in` and `is` can be both operators or keywords depending on context, so different colors are expected. A preceding `!` is a separate token, i.e. there can be arbitrary spaces and comments in between. This makes it pretty difficult for the lexer to highlight these correctly, but there is actually support for that by asking the parser. It seems this is broken, though. --
