complete -c uu-comm -n "__fish_use_subcommand" -l output-delimiter -d 'separate columns with STR'
complete -c uu-comm -n "__fish_use_subcommand" -s 1 -d 'suppress column 1 (lines unique to FILE1)'
complete -c uu-comm -n "__fish_use_subcommand" -s 2 -d 'suppress column 2 (lines unique to FILE2)'
complete -c uu-comm -n "__fish_use_subcommand" -s 3 -d 'suppress column 3 (lines that appear in both files)'
complete -c uu-comm -n "__fish_use_subcommand" -s h -l help -d 'Prints help information'
complete -c uu-comm -n "__fish_use_subcommand" -s V -l version -d 'Prints version information'
