[ '--clean file1 file2', 'more than one file' ],
[ '--clean-all file1 file2', 'more than one file' ],
[ '- file', 'hyphen cannot be used as color string' ],
[ '--clean file1 file2', 'more than one file' ],
[ '--clean-all file1 file2', 'more than one file' ],
[ '- file', 'hyphen cannot be used as color string' ],