Embedding Guile and regexp problems

[Anthony W. Juckel]

I've recently begun work on a GNUstep application for which I would like 
to use guile as an extension/calculation language.  Now, I've recently 
run into a roadblock.  I have some scheme code which makes use of 
regular expressions, and upon running that code, I get an exception, 
because match:substring and string-match are unbound within my embedded 
guile environment.  Now, I've checked the value of *features* from 
within this embedded guile, and regex is indeed included, and as this is 
the only step the documentation cites to using regexp within guile I'm 
not sure where to proceed from here.  Do I need to insert a particular 
module, or perhaps link my application against a particular library?

AWJ