[m-dev.] sp_lib.nl and string__contains_char

[Tyson Richard DOWD]

> A reminder to everyone: anything implemented using pragma c_code in
> the standard library should also be implemented in Prolog code in
> the corresponding .nu.nl file.

Ok, so I should do this for a few predicates...

What's the best way to redefine builtin predicates, but still be
able to use the builtins? (functor/3, arg/3 in particular)?

-- 
       Tyson Dowd           # "Most people's C code should be indented
                            #  six feet downward and covered with 
     trd at cs.mu.oz.au        #  dirt."
http://www.cs.mu.oz.au/~trd # - Blair Houghton, on C code indentation