#compdef chgrp

autoload -U is-at-least

_chgrp() {
    typeset -A opt_args
    typeset -a _arguments_options
    local ret=1

    if is-at-least 5.2; then
        _arguments_options=(-s -S -C)
    else
        _arguments_options=(-s -C)
    fi

    local context curcontext="$curcontext" state line
    _arguments "${_arguments_options[@]}" : \
'--reference=[use RFILE'\''s group rather than specifying GROUP values]:RFILE:_files' \
'--from=[change the group only if its current group matches GROUP]:GROUP:_default' \
'--help[Print help information.]' \
'-c[like verbose but report only when a change is made]' \
'--changes[like verbose but report only when a change is made]' \
'-f[]' \
'--silent[]' \
'--quiet[suppress most error messages]' \
'-v[output a diagnostic for every file processed]' \
'--verbose[output a diagnostic for every file processed]' \
'--preserve-root[fail to operate recursively on '\''/'\'']' \
'--no-preserve-root[do not treat '\''/'\'' specially (the default)]' \
'-R[operate on files and directories recursively]' \
'--recursive[operate on files and directories recursively]' \
'-H[if a command line argument is a symbolic link to a directory, traverse it]' \
'-L[traverse every symbolic link to a directory encountered]' \
'-P[do not traverse any symbolic links (default)]' \
'--dereference[affect the referent of each symbolic link (this is the default), rather than the symbolic link itself]' \
'-h[affect symbolic links instead of any referenced file (useful only on systems that can change the ownership of a symlink)]' \
'--no-dereference[affect symbolic links instead of any referenced file (useful only on systems that can change the ownership of a symlink)]' \
'-V[Print version]' \
'--version[Print version]' \
&& ret=0
}

(( $+functions[_chgrp_commands] )) ||
_chgrp_commands() {
    local commands; commands=()
    _describe -t commands 'chgrp commands' commands "$@"
}

if [ "$funcstack[1]" = "_chgrp" ]; then
    _chgrp "$@"
else
    compdef _chgrp chgrp
fi
