/usr/share/fish/completions/chgrp.fish is in fish-common 2.4.0-1.
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1 2 3 4 5 6 7 8 9 10 11 | complete -c chgrp -s c -l changes --description "Output diagnostic for changed files"
complete -c chgrp -l dereference --description "Dereference symbolic links"
complete -c chgrp -s h -l no-dereference --description "Do not dereference symbolic links"
complete -c chgrp -l from --description "Change from owner/group"
complete -c chgrp -s f -l silent --description "Suppress errors"
complete -c chgrp -l reference --description "Use same owner/group as file" -r
complete -c chgrp -s R -l recursive --description "Operate recursively"
complete -c chgrp -s v -l verbose --description "Output diagnostic for every file"
complete -c chgrp -s h -l help --description "Display help and exit"
complete -c chgrp -l version --description "Display version and exit"
complete -c chgrp -d Group -a "(__fish_complete_groups)"
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