Hi, I'm currently observing my system log file:
tail -F /var/log/system.log
And on loading an Xcode project I've got many warnings about redundant files in the introjucer-generated project, for instance:
Jul 16 11:09:11 MyMachine.local Xcode: warning: The file reference for "../../../xxxxxxx/juce/modules/juce_audio_plugin_client/VST/juce_VST_Wrapper.cpp" is a member of multiple groups ("VST" and "Juce Library Code"); this indicates a malformed project. Only the membership in one of the groups will be preserved (but membership in targets will be unaffected). If you want a reference to the same file in more than one group, please add another reference to the same path.
As a consequence, the file only appears once in the Xcode project tree; this does not prevent the project to apparently compile fine, but who knows? You might want to prevent such issues, just in case you were not aware of these.
All the best!