initialize_copy

static VALUE
strscan_init_copy(VALUE vself, VALUE vorig)
{
    struct strscanner *self, *orig;

    Data_Get_Struct(vself, struct strscanner, self);
    check_strscan(vorig);
    Data_Get_Struct(vorig, struct strscanner, orig);
    if (self != orig) {
        self->flags = orig->flags;
        self->str = orig->str;
        self->prev = orig->prev;
        self->curr = orig->curr;
        onig_region_copy(&self->regs, &orig->regs);
    }

    return vself;
}