title: run unison in bash script
body: <p>Hi when I run a command on terminal like that </p>
  
  <pre><code>unison dir1 dir2 -ignore 'Regex dir3' -batch -force dir1 -confirmbigdel=false
  </code></pre>
  
  <p>it runs normally. But when I try to run it in a bash script it like that </p>
  
  <pre><code>a="-ignore 'Regex dir3'"
  unison dir1 dir2 "$a" -batch -force dir1 -confirmbigdel=false
  </code></pre>
  
  <p>it says that </p>
  
  <blockquote>
    <p>unison: unknown option `-ignore 'Regex
    c''</p>
  </blockquote>
  
  <p>How can I solve that problem? Thank you...
  .</p>