title: erlang how to print unicode strings?
body: <p>I use io:format to log messages to disk. Each message looks like [{field1, Content1}, {field2, Content2}, ...].</p>
  
  <p>When I use io:format("~p", [Msg]) to print it, the file will look like [{field1, &lt;&lt;123,456,789,...>>}, ...]. </p>
  
  <p>But I want to print the unicode strings in their original form, not like integer arrays. What should I do?</p>