EditorPrefs.Set*() when using -batchmode -quit under MacOSX

Hi!

I have a EditorWindow implementation that I'm trying to save preferences for under MacOSX. In particular, I'm doing it from a command-line script that invokes Unity using -batchmode -quit.

This is roughly what I have:

 public class MyEditorTool : EditorWindow {
     const string PREF_KEY = "MyEditorTool/MyStringPreference";
 
     public static void SetPreferenceFromCommandLine() {
         string[] args = Environment.GetCommandLineArgs ();
         int argIndex = 1;
         ...
         // (Scan for the appropriate command-line option index)
         ...
         EditorPrefs.SetString (PREF_KEY, args[argIndex]);
     }
 
     ...
 }
 

So under MacOSX, I have a script that sets up the preference for a particular project that does the following:

 /Applications/Unity/Unity.app/Contents/MacOS/Unity -quit -batchmode \
   -executeMethod MyEditorTool.SetPreferenceFromCommandLine \
   -projectPath <project_path> \
   <my_preference_value>

Under MacOSX, this doesn't seem to work if -quit is specified. However, without -quit, it works if I close the Unity App.

Under Windows, the equivalent command line works with -quit.

Am I missing something to commit the change to the preferences?

Thanks in advance.