complete -c zcat -x -a "( __fish_complete_suffix (commandline -ct) .gz 'Compressed file' __fish_complete_suffix (commandline -ct) .tgz 'Compressed archive' ) " complete -c zcat -s f -l force -d "Overwrite" complete -c zcat -s h -l help -d "Display help" complete -c zcat -s L -l license -d "Print license" complete -c zcat -s V -l version -d "Display version"