title: Inno setup: how to replace a string in XML file?
body: <p>The following (in quote) is the content of a XML file which is part of my package.
  I'd like to replace the value of <code>c:\path\myapp.exe</code> during the installation (with the real path where the user chose to install the application.
  Is that possible? How to?</p>
  
  <pre><code>&lt;?xml version="1.0" encoding="UTF-8"?&gt;
  &lt;launchConfiguration type="org.eclipse.ui.externaltools.ProgramLaunchConfigurationType"&gt;
     &lt;listAttribute key="org.eclipse.debug.ui.favoriteGroups"&gt;
        &lt;listEntry value="org.eclipse.ui.externaltools.launchGroup"/&gt;
     &lt;/listAttribute&gt;
     &lt;stringAttribute key="org.eclipse.ui.externaltools.ATTR_LAUNCH_CONFIGURATION_BUILD_SCOPE" value="${none}"/&gt;
     &lt;stringAttribute key="org.eclipse.ui.externaltools.ATTR_LOCATION" value="c:\path\myapp.exe"/&gt;
     &lt;stringAttribute key="org.eclipse.ui.externaltools.ATTR_TOOL_ARGUMENTS" value="${resource_loc}"/&gt;
  &lt;/launchConfiguration&gt;
  </code></pre>