// begins and ends with a tabwriter.Escape byte.
	// And some newlines have turned into \f bytes.
	insert := 0
	for pos := 0; ; {
		// Skip leading space at beginning of line.
		blank := true
		for pos < len(p.output) && (p.output[pos] == ' ' || p.output[pos] == '\t') {
			pos++
		}
		// Skip over // comment if any.
		if pos+3 < len(p.output) && p.output[pos] == tabwriter.Escape && p.output[pos+1] == '/' && p.output[pos+2] == '/' {

	y := t.x[:]
	for i := range t.x[:] {
		y = t.x[:]
		y[i] = 1
	}

	var z *byte
	for i := range t.x[:] {
		z = &t.x[i]
		*z = 2
	}
}

// Issue 15730: copy causes unnecessary escape

var sink []byte
var sink2 []int
var sink3 []*int

func f15730a(args ...interface{}) { // ERROR "args does not escape"
	for _, arg := range args {
		switch a := arg.(type) {

// errorcheck -0 -m -l

// Copyright 2019 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

// Test escape analysis for goto statements.

package escape

var x bool

func f1() {
	var p *int
loop:
	if x {
		goto loop
	}
	// BAD: We should be able to recognize that there
	// aren't any more "goto loop" after here.

   * not throw any exceptions.
   *
   * @param c the character to escape if necessary
   * @return the replacement characters, or {@code null} if no escaping was needed
   */
  @CheckForNull
  protected abstract char[] escape(char c);

  /**
   * Returns the escaped form of a given literal string, starting at the given index. This method is
   * called by the {@link #escape(String)} method when it discovers that escaping is required. It is

   * not throw any exceptions.
   *
   * @param c the character to escape if necessary
   * @return the replacement characters, or {@code null} if no escaping was needed
   */
  @CheckForNull
  protected abstract char[] escape(char c);

  /**
   * Returns the escaped form of a given literal string, starting at the given index. This method is
   * called by the {@link #escape(String)} method when it discovers that escaping is required. It is

func (p *htmlPrinter) text(out *bytes.Buffer, x []Text) {
	for _, t := range x {
		switch t := t.(type) {
		case Plain:
			p.escape(out, string(t))
		case Italic:
			out.WriteString("<i>")
			p.escape(out, string(t))
			out.WriteString("</i>")
		case *Link:
			out.WriteString(`<a href="`)
			p.escape(out, t.URL)
			out.WriteString(`">`)
			p.text(out, t.Text)
			out.WriteString("</a>")
		case *DocLink:

      @Override
      @CheckForNull
      protected char[] escape(int cp) {
        // If a code point maps to a single character, just escape that.
        if (cp < Character.MIN_SUPPLEMENTARY_CODE_POINT) {
          return escaper.escape((char) cp);
        }
        // Convert the code point to a surrogate pair and escape them both.
        // Note: This code path is horribly slow and typically allocates 4 new

    }

    public QueryStringBuilder sortField(final String sortField) {
        this.sortField = sortField;
        return this;
    }

    public QueryStringBuilder escape(final boolean escape) {
        this.escape = escape;
        return this;
    }

      @Override
      @CheckForNull
      protected char[] escape(int cp) {
        // If a code point maps to a single character, just escape that.
        if (cp < Character.MIN_SUPPLEMENTARY_CODE_POINT) {
          return escaper.escape((char) cp);
        }
        // Convert the code point to a surrogate pair and escape them both.
        // Note: This code path is horribly slow and typically allocates 4 new

	prev := runeZero
	hasLeadingPercent := false
	patLen := len([]rune(pattern))
	for i, r := range pattern {
		if i > 0 && prev == escape {
			switch r {
			case percent, escape, underscore:
				s = append(s, r)
				prev = r
				if r == escape {
					prev = runeZero
				}
			default:
				return false, errMalformedEscapeSequence
			}
			continue
		}

		prev = r

		var ok bool
		switch r {
		case percent: