The archive was created thus: echo hello > 'filename with spaces.txt' rar a archive.rar 'filename with spaces.txt' ... Our 'urar' supports two listing formats: that of version 5, and that of version 4. 'urar.v5.input' was created with "unrar vt -c- -cfg- archive.rar" using unrar 5.30. 'urar.v4,v3.input' was created with "unrar v -c- -cfg- archive.rar" using unrar 3.80 for DOS (google "unrar dos"), via DOSBox (and then the "\" was changed to "/" by hand). An inspection of our urar's source code should lead us to conclude that this format is compatible with that of version 4.