Formatting Bug with multiple template tags nested in component

[JamieCurnow]

• 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: 0.32.0
• VS Code version: 1.52.1

Problem

Indentation of HTML is incorrect when (and only when) multiple <template> tags are used to define named slots in a component and the main <template> tag has lang="html".

Reproducible Case

• clone https://github.com/JamieCurnow/veturpack-template-bug
• open Test.vue
• manually add correct indentation to lines 8 and 9
• > Format document

Work around

Maybe lang="html" is no longer needed in the main template tag? Removing that fixes the issue.

[yoyo930021]

We are used vue-html name in template language.
Maybe we need to alias to html.

Ref: #2340

@octref Is there a reason we don't do this?