Elasticsearch edgengram fields in _all issue

elasticsearch-_all-test.sh

# elasticsearch: Version: 2.3.3, Build: 218bdf1/2016-05-17T15:40:04Z, JVM: 1.8.0_92
# Arch Linux
# Kernel version 4.4.3-1-custom

# Setup a basic index using an edgengram filter
curl -XPUT "http://localhost:9200/test_index?pretty=true" -d'
{
   "settings": {
      "analysis": {
         "filter": {
            "edge_ngram_filter": {
               "type": "edge_ngram",
               "min_gram": 2,
               "max_gram": 20
            }
         },
         "analyzer": {
            "edge_ngram_analyzer": {
               "type": "custom",
               "tokenizer": "standard",
               "filter": [
                  "lowercase",
                  "edge_ngram_filter"
               ]
            }
         }
      }
   },
   "mappings": {
      "doc": {
         "properties": {
            "text_field": {
               "type": "string",
               "analyzer": "edge_ngram_analyzer",
               "search_analyzer": "standard"
            }
         }
      }
   }
}'

# Example document
curl -XPUT "http://localhost:9200/test_index/doc/1?pretty=true" -d'
{
    "text_field": "Hello, World!"
}'

# _all ngram search doesn't work. It retuns an empty result.
curl -XPOST "http://localhost:9200/test_index/_search?pretty=true" -d'
{
    "query": {
        "match": {
            "_all": "hell"
        }
    }
}'

# _all whole word search works though
curl -XPOST "http://localhost:9200/test_index/_search?pretty=true" -d'
{
    "query": {
        "match": {
            "_all": "hello"
        }
    }
}'

# And an ngram search on the specific field works
curl -XPOST "http://localhost:9200/test_index/_search?pretty=true" -d'
{
    "query": {
        "match": {
            "text_field": "hell"
        }
    }
}'

# The term vector looks fine too
curl -XGET "http://localhost:9200/test_index/doc/1/_termvector?fields=text_field&pretty=true"