HTML attributes with comma in value throws the whole tag off

For example, <meta name="viewport" content="width=device-width, initial-scale=1.0"> is a common practice for mobile-friendly development. When written in jade.php as meta(name="viewport", content="width=device-width, initial-scale=1.0"), it is rendered as <meta name="viewport" content="width=device-width" initial-scale="1.0" />. The Javascript version does not currently have this bug.