decimal separator (3,1415927 is Europeanese for an approximation of pi)
Regexen
- POSIX [:foo:] character classes
- ([=bar=] and [.zap.] would nice too but there's no API for them)
+ POSIX [=bar=] and [.zap.] would nice too but there's no API for them
+ (=bar= could be done with Unicode, though)
approximate matching
Reliable Signals