complete -c uu-tac -n "__fish_use_subcommand" -s s -l separator -d 'use STRING as the separator instead of newline'
complete -c uu-tac -n "__fish_use_subcommand" -s b -l before -d 'attach the separator before instead of after'
complete -c uu-tac -n "__fish_use_subcommand" -s r -l regex -d 'interpret the sequence as a regular expression'
complete -c uu-tac -n "__fish_use_subcommand" -s h -l help -d 'Prints help information'
complete -c uu-tac -n "__fish_use_subcommand" -s V -l version -d 'Prints version information'
