All, I'm continuing with this feature implementation. Getting advantage on my newly acquired experience on this project I made some changes in my implementation. Now I have a concern about the option name "--suffix". I think the --suffix-length, --numeric-suffixes and the new --suffix are confusing for the user since the two first are related to the count suffix and the last one is an additional suffix appended to the whole output file name. I think it would be clearer to replace "--suffix" with something like "--additional-suffix". What do you think ? Cheers, Jérémy