title: Use StrStr in Uninstaller Code
body: <p>Is it possible to use the NSIS function <code>StrStr</code> in uninstaller macro functions? Ie, call the function <code>un.StrStr</code> if it exists?</p>
  
  <p>I am having trouble remembering if StrStr is part of the main API like <code>IntCmp</code> and <code>FileExists</code> or if its a function someone has written and widely distrubuted? If its the latter than I'll search through my nsi files and edit the code to work for uninstaller code aswell.</p>
  
  <p>How do other people use StrStr in uninstaller code?</p>