If you try to leave a folder with unsaved changes to a file, a message pops up about it, asking if you would like to save the file. The choices are only "OK" and "Cancel". Normally "Cancel" would cancel the request to leave the folder, but if you click on it, your changes are gone like so many snowflakes in a fire. I would ask for 3 choices: "Yes", "No", and "Cancel".
I've added this in 206a47a.
Now there are three options..."Save Files", "Don't Save", "Cancel".
Thanks for the feedback!