title: R Error in prettyNum(.Internal(format(x, trim, digits, nsmall, width, 3L, : 8 arguments passed to .Internal(format) which requires 9
body: <p>It has been a long time since the last time I used Rstudio.<br>
  Today I updated it to the latest and updated R to 3.2.2. After that I created a Rmd document and its default code just turned to be error.  </p>
  
  <pre><code>summary(cars)  
  </code></pre>
  
  <p>And here is the error  </p>
  
  <pre><code>Error in prettyNum(.Internal(format(x, trim, digits, nsmall, width, 3L,  : 
  8 arguments passed to .Internal(format) which requires 9
  </code></pre>
  
  <p>It's not the only place that error happens.
  I write this in my Rmd document.</p>
  
  <pre><code>plot(set1$x, set1$y, pch=19, cex=0.50, main="Points in Set #1")
  </code></pre>
  
  <p>Then the <em>same</em> error happened. But it's OK to code it in console directly.<br>
  Besides, some view() function also tragger the error.<br>
  It took me a long time and I can't find out what had happened.  </p>
  
  <hr>
  
  <p>I redownload R-3.2.0, and things fit well in there place. So my new question is what has been updated about function <em>format</em>. </p>