custom analyzer question

gistfile1.txt

curl -XDELETE 'http://localhost:9200/twitter/'
curl -XPUT 'http://localhost:9200/twitter/' -d '{
"settings" : { 
    "analysis": 
        {
            "filter": {
                "synonym_filter" : {
                    "type" : "synonym",
                    "synonyms": [
                            "i-phone 4, i phone 4, iphone 4  => iphone4"
                    ],
                    "ignore_case": "true"
                },
                "front_edgengram_filter": {
                    "type": "edgeNGram","max_gram": 15, "side": "front",
                    "min_gram": 3
                }
            },
            "analyzer": {
                "k_search": {
                    "type": "custom",
                    "tokenizer": "standard",
                    "filter": [
                        "lowercase",
                        "synonym_filter"
                    ]
                },
                "k_index": {
                    "type": "custom",
                    "tokenizer": "standard",
                    "filter": [
                        "lowercase",
                        "synonym_filter",
                        "front_edgengram_filter"
                    ]
                }
            }
        }
    }
}'
echo '\n mapping'
curl -XPUT 'http://localhost:9200/twitter/tweet/_mapping?pretty' -d '
{
    "tweet" : {
        "dynamic": true,
        "properties" : {
            "message" : {
                "type" : "string", "store" : "yes",
                "index_analyzer": "k_index",
                "search_analyzer": "k_search"
            }
        }
    }
}
'
echo '\n done mapping'
# curl -XPUT 'http://localhost:9200/twitter/tweet/1?pretty' -d '{
#     "message" : "iphone 4 black 32GB factory unlocked, brand new, two days used, axiom warranty"
# }'


curl -XPUT 'http://localhost:9200/twitter/tweet/1?pretty' -d '{
    "message" : "iphone 4"
}'


sleep 10

# curl -XGET 'http://localhost:9200/classifieds/classified_mb/_mapping?pretty=true'
echo '\n done putting'

curl -XGET 'localhost:9200/twitter/_analyze?analyzer=k_index&pretty' -d 'iphone 4'

echo '\n done index analyzing sample'
curl -XGET 'localhost:9200/twitter/_analyze?analyzer=k_search&pretty' -d 'iphone 4'
echo '\n done search analyzing sample'


echo '\n\n search via term (not analyzed)'
curl -XGET 'http://localhost:9200/twitter/tweet/_search?pretty' -d '{
    "query" : {
        "term" : { "message" : "iphone 4" }
    }
}
'

echo '\n\n searching with query_string'
curl -XGET 'http://localhost:9200/twitter/tweet/_search?pretty' -d '{
    "explain": true,
            "query" : {
                "query_string" : {
                    "fields": ["message"],
                    "default_operator": "AND",
                    "query" : "iphone 4"
                }
            }
}
'
echo '\n\n searching with text'
curl -XGET 'http://localhost:9200/twitter/tweet/_search?pretty' -d '{
            "query" : {
                "text" : {
                    "message" : "iphone 4"
                }
            }
}
'

echo '\n done searching'

echo '\n should get:'
curl -XGET 'http://localhost:9200/twitter/tweet/1?pretty'