p.output = append(p.output, tabwriter.Escape)
		// p.out must match the //line directive
		p.out.Filename = pos.Filename
		p.out.Line = pos.Line
	}
}

// writeIndent writes indentation.
func (p *printer) writeIndent() {
	// use "hard" htabs - indentation columns
	// must not be discarded by the tabwriter
	n := p.Config.Indent + p.indent // include base indentation
	for i := 0; i < n; i++ {

func (p *printer) writeStart(start *StartElement) error {
	if start.Name.Local == "" {
		return fmt.Errorf("xml: start tag with no name")
	}

	p.tags = append(p.tags, start.Name)
	p.markPrefix()

	p.writeIndent(1)
	p.WriteByte('<')
	p.WriteString(start.Name.Local)

	if start.Name.Space != "" {
		p.WriteString(` xmlns="`)
		p.EscapeString(start.Name.Space)
		p.WriteByte('"')
	}

	// Attributes