next!

/*
 *  call-seq:
 *     str.succ!   => str
 *     str.next!   => str
 *  
 *  Equivalent to <code>String#succ</code>, but modifies the receiver in
 *  place.
 */

static VALUE
rb_str_succ_bang(str)
    VALUE str;
{
    rb_str_shared_replace(str, rb_str_succ(str));

    return str;
}