Testing special chars and query_string

gistfile1.txt

DELETE /test
PUT test
{
  "settings": {
    "analysis": {
      "analyzer": {
        "my_ngram_analyzer": {
          "tokenizer": "keyword",
          "filter": [
            "substring"
          ]
        }
      },
      "filter": {
        "substring": {
          "type": "nGram",
          "min_gram": 1,
          "max_gram": 50
        }
      }
    }
  },
  "mappings": {
    "test": {
      "properties": {
        "Path": {
          "type": "string",
          "index_analyzer": "my_ngram_analyzer",
          "search_analyzer": "keyword"
        }
      }
    }
  }
}
POST /test/test/_bulk
{"index":{}}
{"Path":"C:\\temp\\ab-cd\\abc.doc@ddd"}
{"index":{}}
{"Path":"C:\\temp\\ab-cd\\abc.doc"}
{"index":{}}
{"Path":"C:temp\\ab-cd\\bc.docddd"}
{"index":{}}
{"Path":"C:temp\\ab-cd\\bc.doc"}

GET /test/test/_search
{
  "query": {
    "query_string": {
      "default_field": "Path",
      "query": "ab\\-cd"
    }
  }
}

GET /test/test/_search
{
  "query": {
    "query_string": {
      "default_field": "Path",
      "query": "cd\\\\abc"
    }
  }
}

GET /test/test/_search
{
  "query": {
    "query_string": {
      "default_field": "Path",
      "query": "C\\:\\\\temp"
    }
  }
}

GET /test/test/_search
{
  "query": {
    "query_string": {
      "default_field": "Path",
      "query": "C\\:temp"
    }
  }
}