title: How to split string and store in list via TCL
body: <p>Is there a way to  split strings and save in a list ?
  How to split string and save in two list
  For example, I have a string where I split several string with <code>=</code>:</p>
  
  <pre>
  a=1
  b=2
  c=3
  d=4
  </pre>
  
  <p>and then I want to create two list like this <code>[a,b,c,d]</code> and <code>[1,2,3,4]</code>:</p>