crash ES with the ! character

gistfile1.rb

#encoding: utf-8
require 'rubygems'
require 'tire'
require 'json'
require 'active_support/core_ext/object/to_query'
require 'active_support/core_ext/object/to_param'

Tire.configure { logger 'elasticsearch.log', :level => 'debug' }

Tire.index 'ponctu' do
  delete
  create

  import [
    {id:1, text:"Hello!"}
  ]
  refresh
end

s = Tire.search 'ponctu' do
  query do
      #Crash without the escape paramater
      string 'Hello!', escape: true
  end
end

s.results.each do |document|
  p document.text
end

# curl -X GET "http://localhost:9200/ponctu/_search?pretty=true" -d '{"query":{"query_string":{"query":"Hello!"}}}'

You have to escape the query strings, search "Lucene query syntax".

It works well with string 'Hello!', escape: true