title: how to join multiple lines in notepad++ with comma as a separator
body: <p>I need to join multiple lines in notepad++ into one single line with comma as a separator</p>
  
  <pre><code>one
  two
  three
  four
  five
  </code></pre>
  
  <p>the output that I need is as below</p>
  
  <pre><code>one,two,three,four,five
  </code></pre>
  
  <p><kbd>Ctrl</kbd>+<kbd>A</kbd> and <kbd>Ctrl</kbd>+<kbd>j</kbd> will join but will add space</p>