Maybe I'm imagining it, or maybe I never tested this since moving to a Mac from a Gentoo machine (not by choice), but I could've sworn there used to be an option to keep Geany open after closing the last open document.  I've enabled the "new_document_after_close" preference, but it's not exactly the same.  Did this option disappear at some point fairly recently?  Is this a feature missing from the Mac version?  Am I just crazy?