Okay, a new bug is found.
If you use it like this
[as]trace ('this is proper AS syntax,');
trace ('but if I happen to own a 19" monitor,');
trace ('the syntax is all ++++ed up');[/as]
all will be highlighted wrong.
Anyway, if someone's skilled enough in PHP, it would be nice if someone would do something for this. If I (meaning my skilled friends

) come up with something, I'll post it here.