> When is the Str module going to be extended to provide
> re-entrant operations??

When someone designs a new interface to Str and gets it approved by a
few respectable members of this community.  A proof-of-concept
implementation wouldn't hurt either, although I'm OK with writing the
final implementation.  It's the API for which I don't have ideas.

> I understand (perhaps incorrectly) that Xavier rewrote the
> code for this module, and assume the underlying functionality
> is re-entrant?

Correct.

- Xavier Leroy