Completion/User/_groups


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#compdef newgrp

local expl

: ${(A)groups:=${${(s: :)$(</etc/group)}%%:*}}
# : ${(A)groups:=${${(s: :)$(ypcat group.byname)}%%:*}} # If you use NIS

_description expl group
compadd "$@" "$expl[@]" - $groups