Component data attribute description missing for dynamic attributes

[rchl]

• I have searched through existing issues
• I have read through docs
• I have read FAQ
• I have tried restarting VS Code or running Vetur: Restart VLS

Info

• Platform: macOS
• Vetur version: -
• VS Code version: -
• VLS version: 0.7.2

Problem

The hover info shows the attribute description if the attribute is not dynamic (doesn't start with the :):

But the description is nowhere to be found when the attribute is dynamic:

Reproducible Case

Repo: https://github.com/rchl/vetur-hover-component-data

1. Create component data like:

// tags.json
{
  "foo-tag": {
    "attributes": ["foo-attr"],
    "description": "A foo tag"
  }
}

// attributes.json
{
    "foo-attr": {
        "description": "Some property"
    }
}

// package.json
  "vetur": {
    "tags": "./tags.json",
    "attributes": "./attributes.json"
  }

2. Create a template:

<template>
  <div>
    <foo-tag foo-attr="v" /><foo-tag :foo-attr="'v'" />
  </div>
</template>

3. Hover the first and then the second foo-attr.

The first one shows the description from attributes.json while the second one doesn't.

[rchl]

Forgot to mention that this is only a problem with vetur.experimental.templateInterpolationService enabled.