ICU folding tokenizer filter in action

gistfile1.txt

curl -XDELETE 'http://localhost:9200/test/'

curl -XPOST 'http://localhost:9200/test' -d '{
  "settings" : {
     "index" : {
        "analysis" : {
            "analyzer" : {
                "icu" : {
                    "type" : "custom",
                    "tokenizer" : "icu_tokenizer",
                    "filter" : [ "icu_folding" ]
                }
            }
        }
    }
  },
  "mappings" : {
     "_default_" : {
       "properties" : {
         "name" : {
           "type" : "string",
           "analyzer" : "icu"
         }
       }
     }
  }    
}'

curl -XPUT 'http://localhost:9200/test/names/1' -d '{
    "name" : "Gearóid"
}'

curl -XPUT 'http://localhost:9200/test/names/2' -d '{
    "name" : "Raphaël"
}'

curl -XPUT 'http://localhost:9200/test/names/3' -d '{
    "name" : "Éva"
}'

curl -XPUT 'http://localhost:9200/test/names/4' -d '{
    "name" : "Häberle"
}'

curl -XPOST 'http://localhost:9200/test/_refresh'
echo

curl -XGET 'http://localhost:9200/test/_search?pretty' -d '{
      "query": {
            "text" : {
                  "name": "Gearóid"
             }
      }
}'
echo

curl -XGET 'http://localhost:9200/test/_search?pretty' -d '{
      "query": {
            "text" : {
                  "name": "Raphaël"
             }
      }
}'
echo

curl -XGET 'http://localhost:9200/test/_search?pretty' -d '{
      "query": {
            "text" : {
                  "name": "Éva"
             }
      }
}'
echo

curl -XGET 'http://localhost:9200/test/_search?pretty' -d '{
      "query": {
            "text" : {
                  "name": "Häberle"
             }
      }
}'
echo

curl -XGET 'http://localhost:9200/test/_search?pretty' -d '{
      "query": {
            "text" : {
                  "name": "Gearoid"
             }
      }
}'
echo

curl -XGET 'http://localhost:9200/test/_search?pretty' -d '{
      "query": {
            "text" : {
                  "name": "Raphael"
             }
      }
}'
echo

curl -XGET 'http://localhost:9200/test/_search?pretty' -d '{
      "query": {
            "text" : {
                  "name": "Eva"
             }
      }
}'
echo

curl -XGET 'http://localhost:9200/test/_search?pretty' -d '{
      "query": {
            "text" : {
                  "name": "Haberle"
             }
      }
}'
echo