anchor.diff:      }
   }
   --------------------------------------------------
  -// NOTCONSOLE
  +// TESTRESPONSE[skip:historically skipped]
   
   <1> The `rating` field is unmapped` in `index5`.
   <2> The `title` field is unmapped` in `index5`.
  
positive.code: --------------------------------------------------
  // TEST[setup:twitter]
  
  Supported request options:
  
  [horizontal]
  `fields`::  A list of fields to compute stats for. The field name supports wildcard notation. For example, using `text_*`
              will cause all fields that match the expression to be returned.
  
  [float]
  ==== Field Capabilities
  
  The field capabilities API returns the following information per field:
  
  [horizontal]
  `searchable`::
  
  Whether this field is indexed for search on all indices.
  
  `aggregatable`::
  
  Whether this field can be aggregated on all indices.
  
  `indices`::
  
  The list of indices where this field has the same type,
  or null if all indices have the same type for the field.
  
  `non_searchable_indices`::
  
  The list of indices where this field is not searchable,
  or null if all indices have the same definition for the field.
  
  `non_aggregatable_indices`::
  
  The list of indices where this field is not aggregatable,
  or null if all indices have the same definition for the field.
  
  
  [float]
  ==== Response format
  
  Request:
  
  [source,console]
  --------------------------------------------------
  GET _field_caps?fields=rating,title
  --------------------------------------------------
  
  [source,js]
  --------------------------------------------------
  {
      "indices": ["index1", "index2", "index3", "index4", "index5"],
  
negative.code:     }
  }
  --------------------------------------------------
  // TESTRESPONSE[skip:historically skipped]
  
  <1> The field `rating` is defined as a long in `index1` and `index2`
  and as a `keyword` in `index3` and `index4`.
  