* unescaped, they would be escaped by the consumer at parse time, anyway.</a>) Additionally, the
   * escaper escapes the slash character ("/"). While slashes are acceptable in URL paths, they are
   * considered by the specification to be separators between "path segments." This implies that, if
   * you wish for your path to contain slashes, you must escape each segment separately and then
   * join them.
   *

	f.Add([]byte(`\$(/bin/false)`))
	f.Add([]byte(`$((0))`))
	f.Add([]byte(`\$((0))`))
	f.Add([]byte(`unescaped space`))
	f.Add([]byte(`escaped\ space`))
	f.Add([]byte(`"unterminated quote`))
	f.Add([]byte(`'unterminated quote`))
	f.Add([]byte(`unterminated escape\`))
	f.Add([]byte(`"quote with unterminated escape\`))
	f.Add([]byte(`'quoted "double quotes"'`))
	f.Add([]byte(`"quoted 'single quotes'"`))
	f.Add([]byte(`"\$0"`))

   * unescaped, they would be escaped by the consumer at parse time, anyway.</a>) Additionally, the
   * escaper escapes the slash character ("/"). While slashes are acceptable in URL paths, they are
   * considered by the specification to be separators between "path segments." This implies that, if
   * you wish for your path to contain slashes, you must escape each segment separately and then
   * join them.
   *

 * {@code char} value. An additional safe range is provided that determines whether {@code char}
 * values without specific replacements are to be considered safe and left unescaped or should be
 * escaped in a general way.
 *
 * <p>A good example of usage of this class is for Java source code escaping where the replacement

}

func (b *Builder) copyCheck() {
	if b.addr == nil {
		// This hack works around a failing of Go's escape analysis
		// that was causing b to escape and be heap allocated.
		// See issue 23382.
		// TODO: once issue 7921 is fixed, this should be reverted to
		// just "b.addr = b".
		b.addr = (*Builder)(abi.NoEscape(unsafe.Pointer(b)))
	} else if b.addr != b {
		panic("strings: illegal use of non-zero Builder copied by value")
	}

import (
	"internal/goexperiment"
	"internal/runtime/atomic"
	"unsafe"
)

// These functions cannot have go:noescape annotations,
// because while ptr does not escape, new does.
// If new is marked as not escaping, the compiler will make incorrect
// escape analysis decisions about the pointer value being stored.

// atomicwb performs a write barrier before an atomic pointer write.

 * code point. An additional safe range is provided that determines whether code points without
 * specific replacements are to be considered safe and left unescaped or should be escaped in a
 * general way.
 *
 * <p>A good example of usage of this class is for HTML escaping where the replacement array

		{`"\x"`, "invalid character '\"' in hexadecimal escape", 0, 3},
		{`"\y"`, "unknown escape", 0, 2},
		{`"\x0"`, "invalid character '\"' in hexadecimal escape", 0, 4},
		{`"\00"`, "invalid character '\"' in octal escape", 0, 4},
		{`"\377" /*`, "comment not terminated", 0, 7}, // valid octal escape
		{`"\378"`, "invalid character '8' in octal escape", 0, 4},
		{`"\400"`, "octal escape value 256 > 255", 0, 5},

	}

}

var escapeBenchmarks = []struct {
	unescaped string
	query     string
	path      string
}{
	{
		unescaped: "one two",
		query:     "one+two",
		path:      "one%20two",
	},
	{
		unescaped: "Фотки собак",
		query:     "%D0%A4%D0%BE%D1%82%D0%BA%D0%B8+%D1%81%D0%BE%D0%B1%D0%B0%D0%BA",

// ERROR "newline in character literal|newline in rune literal"
// ERROR "invalid character literal \(missing closing '\)|rune literal not terminated"

const (
	_ = ''     // ERROR "empty character literal or unescaped ' in character literal|empty rune literal"
	_ = 'f'
	_ = 'foo'  // ERROR "invalid character literal \(more than one character\)|more than one character in rune literal"
//line issue15611.go:11
	_ = '