gistfile1.txt

{
    "settings": {
        "index": {
            "number_of_shards": 5,
            "number_of_replicas": 1
        },
        "analysis": {
            "analyzer": {
                "marker_search_analyzer": {
                    "tokenizer": "standard",
                    "filter": [
                        "lowercase"
                    ],
                    "char_filter": [
                        "my_filter"
                    ]
                },
                "marker_index_analyzer": {
                    "tokenizer": "standard",
                    "filter": [
                        "lowercase",
                        "substring"
                    ],
                    "char_filter": [
                        "my_filter"
                    ]
                },
                "marker_keyword_only": {
                    "tokenizer": "keyword",
                    "filter": [
                        "lowercase"
                    ],
                    "char_filter": [
                        "my_filter"
                    ]
                }
            },
            "filter": {
                "substring": {
                    "type": "edgeNGram",
                    "min_gram": 1,
                    "max_gram": 20,
                    "side": "front"
                },
                "my_snow": {
                    "type": "stemmer",
                    "name": "english"
                }
            },
            "char_filter": {
                "my_filter": {
                    "type": "mapping",
                    "mappings": [
                        "&=>and"
                    ]
                }
            }
        }
    }
}