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+#compdef loginctl
+
+_hosts_or_user_at_host() {
+ _alternative \
+ 'users-hosts:: _user_at_host' \
+ 'hosts:: _hosts'
+}
+
+_loginctl_all_sessions(){_sys_all_sessions=($(loginctl list-sessions | { while read a b; do echo " $a"; done; }) )}
+_loginctl_all_users() {_sys_all_users=( $(loginctl list-users | { while read a b; do echo " $a"; done; }) )}
+_loginctl_all_seats() {_sys_all_seats=( $(loginctl list-seats | { while read a b; do echo " $a"; done; }) )}
+
+# Completion functions for SESSIONS
+for fun in session-status show-session activate lock-session unlock-session terminate-session kill-session ; do
+ (( $+functions[_loginctl_$fun] )) || _loginctl_$fun()
+ {
+ _loginctl_all_sessions
+ compadd "$@" -a - _sys_all_sessions
+ }
+done
+
+# Completion functions for USERS
+for fun in user-status show-user enable-linger disable-linger terminate-user kill-user ; do
+ (( $+functions[_loginctl_$fun] )) || _loginctl_$fun()
+ {
+ _loginctl_all_users
+ compadd "$@" -a - _sys_all_users
+ }
+done
+
+# Completion functions for SEATS
+(( $+functions[_loginctl_seats] )) || _loginctl_seats()
+{
+ _loginctl_all_seats
+ compadd "$@" -a - _sys_all_seats
+}
+for fun in seat-status show-seat terminate-seat ; do
+ (( $+functions[_loginctl_$fun] )) || _loginctl_$fun()
+ { _loginctl_seats }
+done
+
+# Completion functions for ATTACH
+(( $+functions[_loginctl_attach] )) || _loginctl_attach()
+{
+ _loginctl_all_seats
+
+ _arguments -w -C -S -s \
+ ':seat:_loginctl_seats' \
+ '*:device:_files'
+}
+
+# no loginctl completion for:
+# [STANDALONE]='list-sessions list-users list-seats flush-devices'
+
+(( $+functions[_loginctl_command] )) || _loginctl_command()
+{
+ local -a _loginctl_cmds
+ _loginctl_cmds=(
+ "list-sessions:List sessions"
+ "session-status:Show session status"
+ "show-session:Show properties of one or more sessions"
+ "activate:Activate a session"
+ "lock-session:Screen lock one or more sessions"
+ "unlock-session:Screen unlock one or more sessions"
+ "terminate-session:Terminate one or more sessions"
+ "kill-session:Send signal to processes of a session"
+ "list-users:List users"
+ "user-status:Show user status"
+ "show-user:Show properties of one or more users"
+ "enable-linger:Enable linger state of one or more users"
+ "disable-linger:Disable linger state of one or more users"
+ "terminate-user:Terminate all sessions of one or more users"
+ "kill-user:Send signal to processes of a user"
+ "list-seats:List seats"
+ "seat-status:Show seat status"
+ "show-seat:Show properties of one or more seats"
+ "attach:Attach one or more devices to a seat"
+ "flush-devices:Flush all device associations"
+ "terminate-seat:Terminate all sessions on one or more seats"
+ )
+
+ if (( CURRENT == 1 )); then
+ _describe -t commands 'loginctl command' _loginctl_cmds || compadd "$@"
+ else
+ local curcontext="$curcontext"
+
+ cmd="${${_loginctl_cmds[(r)$words[1]:*]%%:*}}"
+
+ if (( $#cmd )); then
+ curcontext="${curcontext%:*:*}:loginctl-${cmd}:"
+
+ _call_function ret _loginctl_$cmd || _message 'no more arguments'
+ else
+ _message "unknown loginctl command: $words[1]"
+ fi
+ return ret
+ fi
+}
+
+
+_arguments -s \
+ {-h,--help}'[Show help]' \
+ '--version[Show package version]' \
+ \*{-p,--property=}'[Show only properties by this name]:unit property' \
+ {-a,--all}'[Show all properties, including empty ones]' \
+ '--kill-who=[Who to send signal to]:killwho:(main control all)' \
+ {-s,--signal=}'[Which signal to send]:signal:_signals' \
+ '--no-ask-password[Do not ask for system passwords]' \
+ {-H,--host=}'[Show information for remote host]:userathost:_hosts_or_user_at_host' \
+ {-P,--privileged}'[Acquire privileges before execution]' \
+ '--no-pager[Do not pipe output into a pager]' \
+ '*::loginctl command:_loginctl_command'