anchor.diff:    "script_fields": {
       "my_coordinates": {
         "script": {
  -        "inline": "doc['coords.lat'].value + ',' + doc['coords.lon'].value",
  +        "source": "doc['coords.lat'].value + ',' + doc['coords.lon'].value",
           "lang": "painless"
         }
       }
  
positive.code:     "my_script_field": {
        "script": {
          "lang": "painless",
          "inline": "doc['another_field'].value.trim()" <1>
        }
      }
    }
  
negative.code:     "my_script_field": {
        "script": {
          "lang": "painless",
          "source": "/\\s/.matcher(doc['tokenstring2'].value).replaceAll('_')" <1>
        }
      }
    }
  