}},
		{CaseName: Name(""), json: `{ "` + strings.Repeat("a", 513) + `" 1 }`, expTokens: []any{
			Delim('{'), strings.Repeat("a", 513),
			decodeThis{&SyntaxError{"expected colon after object key", 518}},
		}},
		{CaseName: Name(""), json: `{ "\a" }`, expTokens: []any{
			Delim('{'),
			&SyntaxError{"invalid character 'a' in string escape code", 3},
		}},

	"⊗":                     "\u2297",
	"∲":        "\u2232",
	"”":           "\u201d",
	"’":                 "\u2019",
	"∷":                           "\u2237",
	"⩴":                          "\u2a74",
	"≡":                       "\u2261",
	"∯":                          "\u222f",
	"∮":                 "\u222e",

// With the exception of the Lmsgprefix flag, there is no
// control over the order they appear (the order listed here)
// or the format they present (as described in the comments).
// The prefix is followed by a colon only when Llongfile or Lshortfile
// is specified.
// For example, flags Ldate | Ltime (or LstdFlags) produce,
//
//	2009/01/23 01:23:23 message
//
// while flags Ldate | Ltime | Lmicroseconds | Llongfile produce,
//

	// Sensitive means that this header field should never be
	// indexed.
	Sensitive bool
}

// IsPseudo reports whether the header field is an http2 pseudo header.
// That is, it reports whether it starts with a colon.
// It is not otherwise guaranteed to be a valid pseudo header field,
// though.
func (hf HeaderField) IsPseudo() bool {
	return len(hf.Name) != 0 && hf.Name[0] == ':'
}

func (hf HeaderField) String() string {

		"CircleTimes;":                     '\U00002297',
		"ClockwiseContourIntegral;":        '\U00002232',
		"CloseCurlyDoubleQuote;":           '\U0000201D',
		"CloseCurlyQuote;":                 '\U00002019',
		"Colon;":                           '\U00002237',
		"Colone;":                          '\U00002A74',
		"Congruent;":                       '\U00002261',
		"Conint;":                          '\U0000222F',

		line = strings.TrimSpace(line)
		if strings.HasPrefix(line, "#") || line == "" {
			continue
		}
		i := strings.Index(line, ":")
		if i < 0 {
			t.Fatalf("missing colon: %q", line)
		}
		key := strings.TrimSpace(line[:i])
		val := strings.TrimSpace(line[i+1:])
		if key == "" {
			t.Fatalf("missing key: %q", line)
		}
		kf := strings.Fields(key)
		switch kf[0] {

	testDir = flag.String("testdir", "", "Go root subdirectory - for testing only (faster startups)")
	pkgPath = flag.String("path", "", "additional package directories (colon-separated)")
	filter = flag.String("filter", "", "filter file containing permitted package directory paths")
	filterMin = flag.Int("filter_minutes", 0, "filter file update interval in minutes; disabled if <= 0")

	testDir		= flag.String("testdir", "", "Go root subdirectory - for testing only (faster startups)")
	pkgPath		= flag.String("path", "", "additional package directories (colon-separated)")
	filter		= flag.String("filter", "", "filter file containing permitted package directory paths")
	filterMin	= flag.Int("filter_minutes", 0, "filter file update interval in minutes; disabled if <= 0")

		{"http://[::1]/", false},
		{"http://[::1]a", true},
		{"http://[::1]%23", true},
		{"http://[::1%25en0]", false},    // valid zone id
		{"http://[::1]:", false},         // colon, but no port OK
		{"http://x:", false},             // colon, but no port OK
		{"http://[::1]:%38%30", true},    // not allowed: % encoding only for non-ASCII
		{"http://[::1%25%41]", false},    // RFC 6874 allows over-escaping in zone

	itemComplex                      // complex constant (1+2i); imaginary is just a number
	itemAssign                       // equals ('=') introducing an assignment
	itemDeclare                      // colon-equals (':=') introducing a declaration
	itemEOF
	itemField      // alphanumeric identifier starting with '.'
	itemIdentifier // alphanumeric identifier not starting with '.'
	itemLeftDelim  // left action delimiter