Jarkko Hietaniemi <jhi(_at_)iki(_dot_)fi> writes:
The notation is [=c=], where c is a character (the context equivalence
classes have been previously mentioned has been the POSIX regexp
extensions in general, such as the recently implemented [:class:]
extension).
Remind me; under POSIX, isn't [=ss=] supposed to work and match ß?
--
Russ Allbery (rra(_at_)stanford(_dot_)edu)
<URL:http://www.eyrie.org/~eagle/>