title: Multiline Textbox allow to split wording after cursor highlight in specific word
body: <p>Let say,</p>
  
  <p>I have a multiline textbox</p>
  
  <p>the textbox content will be as below:</p>
  
  <pre><code>abc def             
  ghi aa jkl         
  mno pqr  
  </code></pre>
  
  <p>The cursor will be located at second line after sentences 'aa'</p>
  
  <p>How to use the string to split out when there is a cursor in-between 'aa'</p>