gistfile1.txt

{
    "analysis" : {
        "filter" : {
            "name_synonyms" : {
                "type" : "synonym",
                "synonyms_path" : "analysis/name_synonyms.txt",
                "expand": "false"
            },
            "name_ngrams" : {
                "type" : "edgeNGram",
                "side" : "front",
                "max_gram" : 30,
                "min_gram" : 1
            },
            "name_metaphone"  : {
                "type" : "vdm_filter",
                "encoder" : "nysiis_and_id",
                "replace" : "false"
            },
            "city_synonyms" : {
                "type" : "synonym",
                "synonyms_path" : "analysis/city_synonyms.txt"
            },
            "city_ngrams" : {
                "type" : "edgeNGram",
                "side" : "front",
                "max_gram" : 30,
                "min_gram" : 1
            },
            "autocomplete_ngrams" : {
                "type" : "edgeNGram",
                "side" : "front",
                "max_gram" : 30,
                "min_gram" : 1
            }
        },
        "analyzer" : {
            "name_autocomplete_search_analyzer" : {
                "filter" : [
                    "standard",
                    "lowercase",
                    "asciifolding",
                    "name_synonyms"
                ],
                "type" : "custom",
                "tokenizer" : "standard"
            },

            "name_autocomplete_index_analyzer" : {
                "filter" : [
                    "standard",
                    "lowercase",
                    "asciifolding",
                    "name_synonyms",
                    "name_ngrams"
                ],
                "type" : "custom",
                "tokenizer" : "standard"
            },
            "standard_analyzer" : {
                "type" : "standard"
            }
        }
    }
}


and a snippet of a mapping definition using it:

"first_name__v" : {
            "type" : "string",
            "store" : true,
            "term_vector" : "with_positions_offsets",
            "analyzer" : "name_autocomplete_search_analyzer",
            "fields" : {
              "autocomplete" : {
                "type" : "string",
                "store" : true,
                "term_vector" : "with_positions_offsets",
                "index_analyzer" : "name_autocomplete_index_analyzer",
                "search_analyzer" : "name_autocomplete_search_analyzer"
              },
              "plain" : {
                "type" : "string",
                "store" : true,
                "term_vector" : "with_positions_offsets",
                "analyzer" : "lowercase_keyword_analyzer"
              },
              "phonetic" : {
                "type" : "string",
                "store" : true,
                "term_vector" : "with_positions_offsets",
                "analyzer" : "name_phonetic_analyzer"
              }
            }
          }