Don't abort when backup files already exist. Don't allow alternative names. Rationale: - When the user wants to revert, he shouldn't be stopped from doing this just because some old backups will be overwritten. - To not clobber important files by accident, alternative names for backup files were disabled. As the backup target now has a fixed name, the user doesn't have to be informed about the backup copy (unless --verbose)

abort: repository a not found!
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requesting all changes
abort: error: Connection refused
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abort: repository a not found!
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abort: destination '../a' already exists
1
abort: repository a not found!
255
abort: destination 'q' already exists