[Code formatting] {{else if}} doesn't work in handlebars files

[shijistar]

• VSCode Version: 1.15.1
• OS Version: Ubuntu 16.04 LTS

Steps to Reproduce:

1. Try to format the following code in hbs (Ember template) files

{{#if conditionA}}
    Something when conditionA comes true
{{else if conditionB}}
     Otherwise, something when conditionB comes true
{{/if}}

Expected:
Code indent like above.
Actually:

  {{#if conditionA}}
    Something when conditionA comes true {{else if conditionB}} Otherwise, something when conditionB comes true
  {{/if}}

Reason:
{{else if}} direction is not recognized as a block statement but regular handlebars tags.

Reproduces without extensions: Yes

[aeschli]

We use http://jsbeautifier.org/ as the formatter. It is foremost a HTML formatter, but has some support for handlebars.
I suggest to file this as a feature request there.