Template rendering using mustache

Elastic Stack Elasticsearch
1

I've been trying to create a template, but I am having some trouble with the mustache rendering.

On the page: https://www.elastic.co/guide/en/elasticsearch/reference/current/search-template.html, you mention how to use a pre-registered template, that is what I wanted to do. It doesn't really work and the output is very minimal, such as "Unexpected ']'".

I thought I'd start with one of you examples and then call the REST endpoint /_render/template
So this one:

{
  "inline": {
    "query": {
      "terms": {
        "status": [
          "{{#status}}",
          "{{.}}",
          "{{/status}}"
        ]
      }
    }
  },
  "params": {
    "status": [ "pending", "published" ]
  }
}

Have you tried rendering this?

It is supposed to give this output:

{
  "template_output": {
    "query": {
      "terms": {
        "status": [ 
          "pending",
          "published"
        ]
      }
    }
  }
}

but I get:

{
  "template_output": {
    "query": {
      "terms": {
        "status": [
          "",
          "pending",
          "",
          "published",
          ""
        ]
      }
    }
  }
}

Now if my status would never be "", then this query would work, but it would not be what I expected?
I am running Elastic Search 2.1.0.

This question was asked and dismissed in topic: Search template creates unnecessary empty strings in arrays

I am not showing my own example.
I am using the examples from your own reference guide, so that I won't confuse the issue with my own failed attempts.

Kind regards, Martin.