title: Format dataframe with no spaces and bold
body: <p>I have no idea how to go about this.  I'd like to print the dataframe df1 with no spaces between the numbers, after formatting them using df2 such that the corresponding values in df1 are bolded:</p>
  <pre><code>df1 = t(data.frame(c(1,2,3),c(1,2,3)))
  df2 = t(data.frame(c(F,F,T),c(T,T,F)))
  </code></pre>
  <p>desired output:</p>
  <blockquote>
  <p>12<strong>3</strong></p>
  <p><strong>12</strong>3</p>
  </blockquote>
  <p>Thanks in advance</p>