title: Match a string with brackets
body: <p>This is a noob question, but my Regex skills in general are rather poor.
  I want to match a string according to the following format:</p>
  
  <p>left-bracket left-parenthesis C or R L right-parenthesis any A-Z a-z right-bracket</p>
  
  <p>Thus, a string <code>[(CL)test]</code> is correct, while <code>[blah(ll</code> is not.</p>
  
  <p>I have this regex pattern:</p>
  
  <pre><code>^\\[\\([RC]L\\)[A-Za-z]\\]$
  </code></pre>
  
  <p>But it fails to match the correct string (obviously due to my mistake, but I can't find it).</p>
  
  <p>Any help is greatly appreciated.</p>