inspect

/*
 * call-seq:
 *    rxp.inspect   => string
 *
 * Produce a nicely formatted string-version of _rxp_. Perhaps surprisingly,
 * <code>#inspect</code> actually produces the more natural version of
 * the string than <code>#to_s</code>.
 *
 *     /ab+c/ix.to_s         #=> /ab+c/ix
*/

static VALUE
rb_reg_inspect(re)
    VALUE re;
{
    rb_reg_check(re);
    return rb_reg_desc(RREGEXP(re)->str, RREGEXP(re)->len, re);
}