title: Parse out single complete sentence containing a certain string pattern with regex
body: <p>I have a certain string of Chinese text: </p>
  
  <blockquote>
    <p>xxxxx。xxxx。xxx。xxx。xxxxx。xxxCxxxx。</p>
  </blockquote>
  
  <p>How do I use regex to parse out the sentence containing the letter "C"? </p>
  
  <blockquote>
    <p>xxxCxxxx。</p>
  </blockquote>
  
  <p>The regex: </p>
  
  <pre><code>/。.+?C.+?。/
  </code></pre>
  
  <p>gave this result: </p>
  
  <pre><code>"。xxxx。xxx。xxx。xxxxx。xxxCxxxx。"
  </code></pre>
  
  <hr>
  
  <p><strong>UPDATE:</strong></p>
  
  <p>Found the answer: <code>[^。]*C[^。]*</code></p>
  
  <p>Can anyone explain why <code>/[^。]*C[^。]*。/</code> works and <code>/。.+?C.+?。/</code> doesn't?</p>