return nil, 0
	}
	return re.Rune, re.Flags & FoldCase
}

// removeLeadingString removes the first n leading runes
// from the beginning of re. It returns the replacement for re.
func (p *parser) removeLeadingString(re *Regexp, n int) *Regexp {
	if re.Op == OpConcat && len(re.Sub) > 0 {
		// Removing a leading string in a concatenation
		// might simplify the concatenation.
		sub := re.Sub[0]

-----END CERTIFICATE-----
Trailing non-PEM content
`)

	invalidCertificateEmptyPEM = []byte(`
Leading non-PEM content
-----BEGIN CERTIFICATE-----
-----END CERTIFICATE-----
Trailing non-PEM content
`)

	// first character is invalid
	invalidCertificateNonASN1Data = []byte(`
Leading non-PEM content
-----BEGIN CERTIFICATE-----
MIIBqDCCAU2gAwIBAgIUfbqeieihh/oERbfvRm38XvS/xHAwCgYIKoZIzj0EAwIw

		}
		break
	}
	return data
}

// parseWord skips any leading spaces or comments in data
// and then parses the beginning of data as an identifier or keyword,
// returning that word and what remains after the word.
func parseWord(data []byte) (word, rest []byte) {
	data = skipSpaceOrComment(data)

	// Parse past leading word characters.
	rest = data
	for {
		r, size := utf8.DecodeRune(rest)

		path         string
		expectedErrs field.ErrorList
	}{
		"implementation specific: no leading slash": {
			pathType:     networking.PathTypeImplementationSpecific,
			path:         "foo",
			expectedErrs: field.ErrorList{field.Invalid(fldPath, "foo", "must be an absolute path")},
		},
		"implementation specific: leading slash": {
			pathType:     networking.PathTypeImplementationSpecific,
			path:         "/foo",

			Path:     "/a b",
			RawQuery: "q=c+d",
		},
		"",
	},
	// path without leading /, so no parsing
	{
		"http:www.google.com/?q=go+language",
		&URL{
			Scheme:   "http",
			Opaque:   "www.google.com/",
			RawQuery: "q=go+language",
		},
		"http:www.google.com/?q=go+language",
	},
	// path without leading /, so no parsing
	{
		"http:%2f%2fwww.google.com/?q=go+language",
		&URL{

}

// String returns the time formatted using the format string
//
//	"2006-01-02 15:04:05.999999999 -0700 MST"
//
// If the time has a monotonic clock reading, the returned string
// includes a final field "m=±<value>", where value is the monotonic
// clock reading formatted as a decimal number of seconds.
//
// The returned string is meant for debugging; for a stable serialized

			wantErr: `ParseAddr("010.000.015.001"): IPv4 field has octet with leading zero`,
		},
		// IPv4 address with a silly amount of leading zeros.
		{
			in:      "000001.00000002.00000003.000000004",
			wantErr: `ParseAddr("000001.00000002.00000003.000000004"): IPv4 field has octet with leading zero`,
		},
		// 4-in-6 with octet with leading zero
		{
			in:      "::ffff:1.2.03.4",

      if (exceptionMessage != null) {
        assertThat(iae).hasMessage(exceptionMessage)
      }
    }
  }

  @Test
  fun parseTrimsAsciiWhitespace() {
    val expected = parse("http://host/")
    // Leading.
    assertThat(parse("http://host/\u000c\n\t \r")).isEqualTo(expected)
    // Trailing.
    assertThat(parse("\r\n\u000c \thttp://host/")).isEqualTo(expected)
    // Both.

	// Peeks returns the word in *data, not as the return value.

	var buf [SizeofPtr]byte

	// Leading edge. PEEKTEXT/PEEKDATA don't require aligned
	// access (PEEKUSER warns that it might), but if we don't
	// align our reads, we might straddle an unmapped page
	// boundary and not get the bytes leading up to the page
	// boundary.
	n := 0
	if addr%SizeofPtr != 0 {

			recurse_64(sa, tmp, numLMS, maxID)
			unmap_8_64(text, sa, numLMS)
		} else {
			// If maxID == numLMS, then each LMS-substring
			// is unique, so the relative ordering of two LMS-suffixes
			// is determined by just the leading LMS-substring.
			// That is, the LMS-suffix sort order matches the
			// (simpler) LMS-substring sort order.
			// Copy the original LMS-substring order into the
			// suffix array destination.