Unfortunately...
Once override a built-in for `markdown`, it applies to all embedded formatting within that file!
This means that overrides occur with js-in-**vue**-in-markdown, and since we haven't addressed this yet, the code breaks.
````md
# MD
```vue
<!-- VUE -->
<script>
// JS
</script>
<template>
<li v-for="function _(IT_BREAKS_HERE 💥) {} in items"></li>
</template>
````