// Output:
	// "", invalid syntax
	// "\"double-quoted string\"", <nil>
	// "`or backquoted`", <nil>
	// "'☺'", <nil>
}

func ExampleUnquote() {
	s, err := strconv.Unquote("You can't unquote a string without quotes")
	fmt.Printf("%q, %v\n", s, err)
	s, err = strconv.Unquote("\"The string must be either double-quoted\"")
	fmt.Printf("%q, %v\n", s, err)
	s, err = strconv.Unquote("`or backquoted.`")

}

// WriteQuoted write quoted value
func (stmt *Statement) WriteQuoted(value interface{}) {
	stmt.QuoteTo(&stmt.SQL, value)
}

// QuoteTo write quoted value to writer
func (stmt *Statement) QuoteTo(writer clause.Writer, field interface{}) {
	write := func(raw bool, str string) {
		if raw {
			writer.WriteString(str)
		} else {
			stmt.DB.Dialector.QuoteTo(writer, str)
		}
	}

        '"quoted"'                         | 'quoted'
        '"with space"'                     | 'with space'
        '"with\\\\"quote\\\\"internal"'    | 'with"quote"internal'
        '"with \\\\"quote\\\\" and space"' | 'with "quote" and space'
    }

    @ToBeFixedForConfigurationCache
    def "compiler and linker args can contain quotes and spaces"() {
        given:

		{name: "space", args: []string{"a ", "b"}, want: "'a ' b"},
		{name: "newline", args: []string{"a\n", "b"}, want: "'a\n' b"},
		{name: "quote", args: []string{`'a `, "b"}, want: `"'a " b`},
		{name: "unquoteable", args: []string{`'"`}, wantErr: "contains both single and double quotes and cannot be quoted"},
	} {
		t.Run(test.name, func(t *testing.T) {
			got, err := Join(test.args)
			if err != nil {
				if test.wantErr == "" {

        //argument quoting:
        // - " must be encoded as \"
        // - % must be encoded as %%
        // - pathological case: \" must be encoded as \\\", but other than that, \ MUST NOT be quoted
        // - other characters (including ') will not be quoted
        // - use a state machine rather than regexps
        for (char ch = it.first(); ch != CharacterIterator.DONE; ch = it.next()) {
            String repl = Character.toString(ch);

      when {
        token == null -> {
          // Value is "double-quoted". That's valid and our regex group already strips the quotes.
          parameter.groups[3]!!.value
        }
        token.startsWith("'") && token.endsWith("'") && token.length > 2 -> {
          // If the token is 'single-quoted' it's invalid! But we're lenient and strip the quotes.
          token.substring(1, token.length - 1)
        }
        else -> token

	escaped := false
	quoted := false
	quote := '\x00'
	i := 0
	for _, rune := range s {
		switch {
		case escaped:
			escaped = false
		case rune == '\\':
			escaped = true
			continue
		case quote != '\x00':
			if rune == quote {
				quote = '\x00'
				continue
			}
		case rune == '"' || rune == '\'':
			quoted = true
			quote = rune
			continue

[Cookie] now preserves double quotes surrounding a cookie value.
The new [Cookie.Quoted] field indicates whether the [Cookie.Value]

//
// Fields which start and stop with the quote character " are called
// quoted-fields. The beginning and ending quote are not part of the
// field.
//
// The source:
//
//	normal string,"quoted-field"
//
// results in the fields
//
//	{`normal string`, `quoted-field`}
//
// Within a quoted-field a quote character followed by a second quote
// character is considered a single quote.
//

			}
			continue
		}
		if i >= len(line) {
			return nil, errors.New("unterminated quoted argument")
		}
		if line[i] == '\'' {
			if !quoted {
				// starting a quoted chunk
				if start >= 0 {
					rawArg = append(rawArg, argFragment{s: line[start:i], quoted: false})
				}
				start = i + 1
				quoted = true
				continue
			}
			// 'foo''bar' means foo'bar, like in rc shell and Pascal.