bwscsbdup
return bwscsbdup((unsigned char *)ret, *len);
struct bwstring *bwscsbdup(const unsigned char *str, size_t size);
ret = bwscsbdup(fr->mmapptr, sz);
ret = bwscsbdup(fr->mmapptr, strend -
ret = bwscsbdup(fr->buffer + fr->strbeg, strend -