This is the expected outcome, so explicitely reporting this, with
requiring the user to click a dialog box away, is kind of clutter.
This should solve issue #136.
Likely users don't care too much about the name of the saved file,
so they likely use the default ones. If they mess up, they also
likely want to return to the original, but, d'oh, it's overwritten.
Don't let this happen, enforce a non-original file name for user
saves.
In other words: don't let users shoot themselfs into their foot.
jbernardis