puts 'hello world"'.gsub(/\A"+(.*)"+\Z/s, '\1')
puts '"hello world"""""'.gsub(/\A"+(.*)"+\Z/s, '\1')
puts '"hello world'.gsub(/\A"+(.*)"+\Z/s, '\1')
cHV0cyAnaGVsbG8gd29ybGQiJy5nc3ViKC9cQSIrKC4qKSIrXFovcywgJ1wxJykKcHV0cyAnImhlbGxvIHdvcmxkIiIiIiInLmdzdWIoL1xBIisoLiopIitcWi9zLCAnXDEnKQpwdXRzICciaGVsbG8gd29ybGQnLmdzdWIoL1xBIisoLiopIitcWi9zLCAnXDEnKQ==