asciifolding behavior in ElasticSearch

gistfile1.json

# config/elasticsearch.yml

index:
  analysis:
    analyzer:
      default:
        tokenizer: standard
        filter: ["standard", "lowercase", "stop", "asciifolding"]


curl -XPUT localhost:9200/test
# {"ok":true,"acknowledged":true}

curl -XPUT localhost:9200/test/person/1 -d '{"name":"Cameron Díaz"}'
# {"ok":true,"_index":"test","_type":"person","_id":"1","_version":1}

curl -XPUT localhost:9200/test/person/2 -d '{"name":"Juan Diaz"}'
# {"ok":true,"_index":"test","_type":"person","_id":"2","_version":1}

curl -XGET "localhost:9200/test/person/_search?q=diaz&pretty"
# {
#   ... omitted ...
#
#   "hits" : {
#     "total" : 2,
#     "max_score" : 0.13561106,
#     "hits" : [ {
#       "_index" : "test",
#       "_type" : "person",
#       "_id" : "1",
#       "_score" : 0.13561106, "_source" : {"name":"Cameron Díaz"}
#     }, {
#       "_index" : "test",
#       "_type" : "person",
#       "_id" : "2",
#       "_score" : 0.13561106, "_source" : {"name":"Juan Diaz"}
#     } ]
#   }
# }

curl -XGET "localhost:9200/test/person/_search?q=díaz&pretty"
# {
#   ... omitted ...
#
#   "hits" : {
#     "total" : 0,
#     "max_score" : null,
#     "hits" : [ ]
#   }
# }