_, end = parseTag(scan, false)
			scan.toLower(start, end)
		}
		for len(scan.token) == 2 && !isAlpha(scan.token[1]) {
			end = scan.acceptMinSize(3)
		}
	case 'x':
		end = scan.acceptMinSize(1)
	default:
		end = scan.acceptMinSize(2)
	}
	return end
}

// getExtension returns the name, body and end position of the extension.
func getExtension(s string, p int) (end int, ext string) {