[plt-scheme] string-copy! primitive

At Fri, 4 Jun 2004 17:57:30 -0400, "Neil W. Van Dyke" wrote:
> Does MzScheme have a primitive for *fast* copying of a substring into a
> string, functionally equivalent to SRFI-13's "string-copy!", but much
> faster than the pure-Scheme reference implementation?

v299: yes.

v20x: no.

> If MzScheme doesn't yet have such a primitive, is now a good time for me
> to write one?  Or should I wait for a future milestone in the current
> character set infrastructure work?

I could add `string-copy!' to the exp-tagged version. Is that useful,
or will you have to create an extension for now, anyway?

Matthew