if j > 0 {
				out.WriteString(" ")
			}
			out.WriteString(w)
		}
		writeNL(out)
	}
}

// oneLongLine prints the text sequence x to out as one long line,
// without worrying about line wrapping.
// Explicit links have the [ ] dropped to improve readability.
func (p *textPrinter) oneLongLine(out *strings.Builder, x []Text) {
	for _, t := range x {
		switch t := t.(type) {
		case Plain:

	// Note: The “hdr-” prefix is important to avoid DOM clobbering attacks.
	// See https://pkg.go.dev/github.com/google/safehtml#Identifier.
	var out strings.Builder
	var p textPrinter
	p.oneLongLine(&out, h.Text)
	s := strings.TrimSpace(out.String())
	if s == "" {
		return ""
	}
	out.Reset()
	out.WriteString("hdr-")
	for _, r := range s {
		if r < 0x80 && isIdentASCII(byte(r)) {