title: Using a heredoc as a hash value
body: <p>I have a method <code>Embed.toggler</code> that takes a hash argument. With the following code, I'm trying to use a heredoc in the hash. </p>
  
  <pre><code>                Embed.toggler({
                      title: &lt;&lt;-RUBY 
                          #{entry['time']}
                          #{entry['group']['who']
                          #{entry['name']}
                      RUBY
                      content: content
                  })
  </code></pre>
  
  <p>However, I'm getting the following error trace:</p>
  
  <pre><code>syntax error, unexpected ':', expecting tSTRING_DEND
                          content: content
                                  ^
  can't find string "RUBY" anywhere before EOF
  syntax error, unexpected end-of-input, expecting tSTRING_CONTENT or tSTRING_DBEG or tSTRING_DVAR or tSTRING_END
                          title: &lt;&lt;-RUBY 
                                        ^
  </code></pre>
  
  <p>How I can avoid getting this error?</p>