trying to use standard_html_strip in ElasticSearch

gistfile1.txt

$ curl -XPUT http://localhost:9200/foo

{"ok":true,"acknowledged":true}

$ curl -XPUT http://localhost:9200/foo/bar/_mapping -d '{
  "properties" : {
    "body": {"type":"string", "analyzer":"standard_html_strip"}
  }
}'

{"ok":true,"acknowledged":true}

$ curl -XPUT http://localhost:9200/foo/bar/1 -d '{
  "body": "<p>This is a <strong>test</strong>.</p>"
}'

{"ok":true,"_index":"foo","_type":"bar","_id":"1","_version":1}

$ curl -XGET http://localhost:9200/foo/bar/_search?q=body:strong

{"took":35,"timed_out":false,"_shards":{"total":5,"successful":5,"failed":0},"hits":{"total":1,"max_score":0.18985549,"hits":[{"_index":"foo","_type":"bar","_id":"1","_score":0.18985549, "_source" : {
    "body": "<p>This is a <strong>test</strong>.</p>"
}}]}}