/*
 *  call-seq:
 *     Regexp.escape(str)   => a_str
 *     Regexp.quote(str)    => a_str
 *  
 *  Escapes any characters that would have special meaning in a regular
 *  expression. Returns a new escaped string, or self if no characters are
 *  escaped.  For any string,
 *  <code>Regexp.escape(<i>str</i>)=~<i>str</i></code> will be true.
 *     
 *     Regexp.escape('\\*?{}.')   #=> \\\\\*\?\{\}\.
 */

static VALUE
rb_reg_s_quote(argc, argv)
    int argc;
    VALUE *argv;
{
    VALUE str, kcode;
    int kcode_saved = reg_kcode;

    rb_scan_args(argc, argv, "11", &str, &kcode);
    if (!NIL_P(kcode)) {
        rb_set_kcode(StringValuePtr(kcode));
        curr_kcode = reg_kcode;
        reg_kcode = kcode_saved;
    }
    StringValue(str);
    str = rb_reg_quote(str);
    kcode_reset_option();
    return str;
}