<start_html>
<script>
    const foo=`?source=${encodeURIComponent(filename)}`
</script>
<script type="module">
    const foo=`?source=${encodeURIComponent(filename)}`
</script>
<script type="application/javascript">
    const foo=`?source=${encodeURIComponent(filename)}`
</script>
<script type="text/javascript">
    const foo=`?source=${encodeURIComponent(filename)}`
</script>
<script type="text/plain">
subst +{subst}
</script>
<script type="text/plain" nosubst>
nosubst +{nosubst}
</script>
