uncommit: abort if an explicitly given file cannot be uncommitted (BC) I've gotten burned several times by this in the last few days. The former tests look simple enough, but if a good file and a bad file are given, the bad files are silently ignored. Some commands like `forget` will warn about bogus files, but that would likely get lost in the noise of an interactive uncommit. The commit command aborts if a bad file is given, so this seems more consistent for commands that alter the repository.