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[PATCH] Completion/Unix/Command/_systemctl renamed to Completion/Unix/Command/_systemd

Various enhancements mostly ported from systemctl-bash-completion.sh:

  Add arguments --root= --runtime
  Add verbs link mask unmask reenable list-unit-files.
  Also uses list-unit-files to make nicer enable and disable completions.
  Add completions for systemd-loginctl
  Get rid of awk, sed and grep
  Enable starting also disabled units
  List really all units (files included) for commands: is-active is-enabled status show mask preset
---
 Completion/Unix/Command/_systemctl |  311 ------------------------
 Completion/Unix/Command/_systemd   |  459 ++++++++++++++++++++++++++++++++++++
 2 files changed, 459 insertions(+), 311 deletions(-)
 delete mode 100644 Completion/Unix/Command/_systemctl
 create mode 100644 Completion/Unix/Command/_systemd

diff --git a/Completion/Unix/Command/_systemctl b/Completion/Unix/Command/_systemctl
deleted file mode 100644
index 3f54092..0000000
--- a/Completion/Unix/Command/_systemctl
+++ /dev/null
@@ -1,311 +0,0 @@
-#compdef systemctl
-
-# Copyright (c) 2011 Foudil Brétel <foudil.newbie+zshsystemctl@xxxxxxxxx>
-#
-# This file is released under the GPLv3.
-#
-# inspired from _yum and systemctl-bash-completion.sh (shipped with systemctl)
-#
-# TODO: enable options after commands. Ex: systemctl list-units --all --full
-
-# Main dispatcher
-_systemctl()
-{
-  local curcontext="$curcontext" state lstate line
-
-  # -s for aggregated options like -aP
-  _arguments -s \
-    {-h,--help}'[Show help]' \
-    '--version[Show package version]' \
-    {-t,--type=}'[List only units of a particular type]:unit type:(automount device mount path service snapshot socket swap target timer)' \
-    \*{-p,--property=}'[Show only properties by specific name]:unit property:' \
-    {-a,--all}'[Show all units/properties, including dead/empty ones]' \
-    '--failed[Show only failed units]' \
-    "--full[Don't ellipsize unit names on output]" \
-    '--fail[When queueing a new job, fail if conflicting jobs are pending]' \
-    '--ignore-dependencies[When queueing a new job, ignore all its dependencies]' \
-    '--kill-mode=[How to send signal]:killmode:(control-group process)' \
-    '--kill-who=[Who to send signal to]:killwho:(main control all)' \
-    {-s,--signal=}'[Which signal to send]:signal:_signals' \
-    {-H,--host=}'[Show information for remote host]:userathost:_hosts_or_user_at_host' \
-    {-P,--privileged}'[Acquire privileges before execution]' \
-    {-q,--quiet}'[Suppress output]' \
-    '--no-block[Do not wait until operation finished]' \
-    "--no-wall[Don't send wall message before halt/power-off/reboot]" \
-    "--no-reload[When enabling/disabling unit files, don't reload daemon configuration]" \
-    '--no-legend[Do not print a legend, i.e. the column headers and the footer with hints]' \
-    '--no-pager[Do not pipe output into a pager]' \
-    '--no-ask-password[Do not ask for system passwords]' \
-    '--order[When generating graph for dot, show only order]' \
-    '--require[When generating graph for dot, show only requirement]' \
-    '--system[Connect to system manager]' \
-    '--user[Connect to user service manager]' \
-    '--global[Enable/disable unit files globally]' \
-    {-f,--force}'[When enabling unit files, override existing symlinks. When shutting down, execute action immediately]' \
-    '--defaults[When disabling unit files, remove default symlinks only]' \
-    '--root=[Enable unit files in the specified root directory]:directory:_directories' \
-    '*::systemctl command:_systemctl_command'
-}
-
-_hosts_or_user_at_host()
-{
-  _alternative \
-    'users-hosts:: _user_at_host' \
-    'hosts:: _hosts'
-}
-
-(( $+functions[_systemctl_command] )) || _systemctl_command()
-{
-  local -a _systemctl_cmds
-  _systemctl_cmds=(
-    "list-units:List units"
-    "start:Start (activate) one or more units"
-    "stop:Stop (deactivate) one or more units"
-    "reload:Reload one or more units"
-    "restart:Start or restart one or more units"
-    "condrestart:Restart one or more units if active"
-    "try-restart:Restart one or more units if active"
-    "reload-or-restart:Reload one or more units is possible, otherwise start or restart"
-    "force-reload:Reload one or more units is possible, otherwise restart if active"
-    "reload-or-try-restart:Reload one or more units is possible, otherwise restart if active"
-    "isolate:Start one unit and stop all others"
-    "kill:Send signal to processes of a unit"
-    "is-active:Check whether units are active"
-    "status:Show runtime status of one or more units"
-    "show:Show properties of one or more units/jobs or the manager"
-    "reset-failed:Reset failed state for all, one, or more units"
-    "list-unit-files:List installed unit files"
-    "enable:Enable one or more unit files"
-    "disable:Disable one or more unit files"
-    "preset:Enable/disable one or more unit files based on preset configuration"
-    "mask:Mask one or more units"
-    "unmask:Unmask one or more units"
-    "link:Link one or more units into the search path"
-    "is-enabled:Check whether unit files are enabled"
-    "load:Load one or more units"
-    "list-jobs:List jobs"
-    "cancel:Cancel all, one, or more jobs"
-    "monitor:Monitor unit/job changes"
-    "dump:Dump server status"
-    "dot:Dump dependency graph for dot(1)"
-    "snapshot:Create a snapshot"
-    "delete:Remove one or more snapshots"
-    "daemon-reload:Reload systemd manager configuration"
-    "daemon-reexec:Reexecute systemd manager"
-    "show-environment:Dump environment"
-    "set-environment:Set one or more environment variables"
-    "unset-environment:Unset one or more environment variables"
-    "default:Enter system default mode"
-    "rescue:Enter system rescue mode"
-    "emergency:Enter system emergency mode"
-    "halt:Shut down and halt the system"
-    "poweroff:Shut down and power-off the system"
-    "reboot:Shut down and reboot the system"
-    "kexec:Shut down and reboot the system with kexec"
-    "exit:Ask for user instance termination"
-  )
-
-  if (( CURRENT == 1 )); then
-    _describe -t commands 'systemctl command' _systemctl_cmds || compadd "$@"
-  else
-    local curcontext="$curcontext"
-
-    cmd="${${_systemctl_cmds[(r)$words[1]:*]%%:*}}"
-    # Deal with any aliases
-    case $cmd in
-      condrestart) cmd="try-restart";;
-      force-reload) cmd="reload-or-try-restart";;
-    esac
-
-    if (( $#cmd )); then
-      curcontext="${curcontext%:*:*}:systemctl-${cmd}:"
-
-      local update_policy
-      zstyle -s ":completion:${curcontext}:" cache-policy update_policy
-      if [[ -z "$update_policy" ]]; then
-        zstyle ":completion:${curcontext}:" cache-policy _systemctl_caching_policy
-      fi
-
-      _call_function ret _systemctl_$cmd || _message 'no more arguments'
-    else
-      _message "unknown systemctl command: $words[1]"
-    fi
-    return ret
-  fi
-}
-
-__check_option_nolegend()
-{
-  systemctl --no-legend --version 2>&1 | grep -q 'unrecognized option'
-  print -Pn '%(?..--no-legend)'
-}
-nolegend=$(__check_option_nolegend)
-
-
-# Fills the unit lists
-_systemctl_all_units()
-{
-  if ( [[ ${+_sys_all_units} -eq 0 ]] || _cache_invalid SYS_ALL_UNITS ) &&
-    ! _retrieve_cache SYS_ALL_UNITS;
-  then
-    _sys_all_units=( $(systemctl ${nolegend} list-units --full --all \
-      | cut -d' ' -f1 2>/dev/null) )
-    _store_cache SYS_ALL_UNITS _sys_all_units
-  fi
-}
-
-_systemctl_inactive_units()
-{
-  _sys_inactive_units=( $(systemctl ${nolegend} list-units --full --all \
-    | awk '$3 != "active" {print $1}' 2>/dev/null) )
-}
-
-_systemctl_active_units()
-{
-  _sys_active_units=( $(systemctl ${nolegend} list-units --full \
-    | cut -d' ' -f1 2>/dev/null) )
-}
-
-_systemctl_failed_units()
-{
-  _sys_failed_units=( $(systemctl ${nolegend} list-units --full --failed \
-    | cut -d' ' -f1 2>/dev/null) )
-}
-
-_filter_units_by_property () {
-  local property=$1 value=$2 ; shift ; shift
-  local -a units ; units=($*)
-  local -a props ; props=( $(systemctl show --property "$property" -- \
-    ${units[*]} | grep -v '^$') )
-  for ((i=1; $i <= ${#units[*]}; i++)); do
-    if [[ "${props[i]}" = "$property=$value" ]]; then
-      echo "${units[i]}"
-    fi
-  done
-}
-
-# Completion functions for ALL_UNITS
-for fun in enable disable is-active is-enabled status show ; do
-  (( $+functions[_systemctl_$fun] )) || _systemctl_$fun()
-  {
-    _systemctl_all_units
-    compadd "$@" -a - _sys_all_units
-  }
-done
-
-# Completion functions for STARTABLE_UNITS
-(( $+functions[_systemctl_start] )) || _systemctl_start()
-{
-  _systemctl_inactive_units
-  compadd "$@" - $( _filter_units_by_property CanStart yes \
-    ${_sys_inactive_units[*]} | grep -Ev '\.(device|snapshot)$' )
-}
-
-# Completion functions for RESTARTABLE_UNITS
-for fun in restart reload-or-restart ; do
-  (( $+functions[_systemctl_$fun] )) || _systemctl_$fun()
-  {
-    _systemctl_all_units
-    compadd "$@" - $( _filter_units_by_property CanStart yes \
-      ${_sys_all_units[*]} | grep -Ev '\.(device|snapshot|socket|timer)$' )
-  }
-done
-
-# Completion functions for STOPPABLE_UNITS
-for fun in stop kill try-restart condrestart ; do
-  (( $+functions[_systemctl_$fun] )) || _systemctl_$fun()
-  {
-    _systemctl_active_units
-    compadd "$@" - $( _filter_units_by_property CanStop yes \
-      ${_sys_active_units[*]} )
-  }
-done
-
-# Completion functions for RELOADABLE_UNITS
-for fun in reload reload-or-try-restart force-reload ; do
-  (( $+functions[_systemctl_$fun] )) || _systemctl_$fun()
-  {
-    _systemctl_active_units
-    compadd "$@" - $( _filter_units_by_property CanReload yes \
-      ${_sys_active_units[*]} )
-  }
-done
-
-# Completion functions for ISOLATABLE_UNITS
-(( $+functions[_systemctl_isolate] )) || _systemctl_isolate()
-{
-  _systemctl_all_units
-  compadd "$@" - $( _filter_units_by_property AllowIsolate yes \
-    ${_sys_all_units[*]} )
-}
-
-# Completion functions for FAILED_UNITS
-(( $+functions[_systemctl_reset-failed] )) || _systemctl_reset-failed()
-{
-  _systemctl_failed_units
-  compadd "$@" -a - _sys_failed_units || _message "no failed-unit found"
-}
-
-# Completion functions for JOBS
-(( $+functions[_systemctl_cancel] )) || _systemctl_cancel()
-{
-  compadd "$@" - $(systemctl ${nolegend} list-jobs \
-    | cut -d' ' -f1  2>/dev/null ) || _message "no job found"
-}
-
-# Completion functions for SNAPSHOTS
-(( $+functions[_systemctl_delete] )) || _systemctl_delete()
-{
-  compadd "$@" - $(systemctl ${nolegend} list-units --type snapshot --full \
-    --all | cut -d' ' -f1  2>/dev/null ) || _message "no snampshot found"
-}
-
-# Completion functions for ENVS
-for fun in set-environment unset-environment ; do
-  (( $+functions[_systemctl_$fun] )) || _systemctl_$fun()
-  {
-    local fun=$0 ; fun=${fun##_systemctl_}
-    local suf
-    if [[ "${fun}" = "set-environment" ]]; then
-      suf='-S='
-    fi
-
-    compadd "$@" ${suf} - $(systemctl show-environment \
-      | sed 's_\([^=]\+\)=.*_\1_' )
-  }
-done
-
-# no completion for:
-#   [STANDALONE]='daemon-reexec daemon-reload default dot dump emergency exit
-#                 halt kexec list-jobs list-units monitor poweroff reboot
-#                 rescue show-environment'
-#         [NAME]='snapshot load'
-
-_systemctl_caching_policy()
-{
-  local _sysunits
-  local -a oldcache
-
-  # rebuild if cache is more than a day old
-  oldcache=( "$1"(mh+1) )
-  (( $#oldcache )) && return 0
-
-  _sysunits=($(systemctl ${nolegend} --full --all | cut -d' ' -f1))
-
-  if (( $#_sysunits )); then
-    for unit in $_sysunits; do
-      [[ "$unit" -nt "$1" ]] && return 0
-    done
-  fi
-
-  return 1
-}
-
-_systemctl "$@"
-
-# Local Variables:
-# mode: sh
-# sh-indentation: 2
-# indent-tabs-mode: nil
-# sh-basic-offset: 2
-# End:
diff --git a/Completion/Unix/Command/_systemd b/Completion/Unix/Command/_systemd
new file mode 100644
index 0000000..ab77e14
--- /dev/null
+++ b/Completion/Unix/Command/_systemd
@@ -0,0 +1,459 @@
+#compdef systemctl systemd-loginctl
+
+# Copyright (c) 2011 Foudil Brétel <foudil.newbie+zshsystemctl@xxxxxxxxx>
+#
+# This file is released under the GPLv3.
+#
+# inspired from _yum and systemctl-bash-completion.sh (shipped with systemctl)
+#
+# TODO: enable options after commands. Ex: systemctl list-units --all --full
+
+# Main dispatcher
+_systemd()
+{
+  local curcontext="$curcontext" state lstate line
+
+  case "$service" in
+    systemctl)
+      # -s for aggregated options like -aP
+      _arguments -s \
+        {-h,--help}'[Show help]' \
+        '--version[Show package version]' \
+        {-t,--type=}'[List only units of a particular type]:unit type:(automount device mount path service snapshot socket swap target timer)' \
+        \*{-p,--property=}'[Show only properties by specific name]:unit property:()' \
+        {-a,--all}'[Show all units/properties, including dead/empty ones]' \
+        '--failed[Show only failed units]' \
+        "--full[Don't ellipsize unit names on output]" \
+        '--fail[When queueing a new job, fail if conflicting jobs are pending]' \
+        '--ignore-dependencies[When queueing a new job, ignore all its dependencies]' \
+        '--kill-mode=[How to send signal]:killmode:(control-group process)' \
+        '--kill-who=[Who to send signal to]:killwho:(main control all)' \
+        {-s,--signal=}'[Which signal to send]:signal:_signals' \
+        {-H,--host=}'[Show information for remote host]:userathost:_hosts_or_user_at_host' \
+        {-P,--privileged}'[Acquire privileges before execution]' \
+        {-q,--quiet}'[Suppress output]' \
+        '--no-block[Do not wait until operation finished]' \
+        "--no-wall[Don't send wall message before halt/power-off/reboot]" \
+        "--no-reload[When enabling/disabling unit files, don't reload daemon configuration]" \
+        '--no-legend[Do not print a legend, i.e. the column headers and the footer with hints]' \
+        '--no-pager[Do not pipe output into a pager]' \
+        '--no-ask-password[Do not ask for system passwords]' \
+        '--order[When generating graph for dot, show only order]' \
+        '--require[When generating graph for dot, show only requirement]' \
+        '--system[Connect to system manager]' \
+        '--user[Connect to user service manager]' \
+        '--global[Enable/disable unit files globally]' \
+        {-f,--force}'[When enabling unit files, override existing symlinks. When shutting down, execute action immediately]' \
+        '--root=[Enable unit files in the specified root directory]:directory:_directories' \
+        '--runtime[Enable unit files only temporarily until next reboot]' \
+        '*::systemctl command:_systemctl_command'
+      ;;
+
+    systemd-loginctl)
+      _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]' \
+        '--failed[Show only failed units]' \
+        '--kill-who=[Who to send signal to]:killwho:(main control all)' \
+        {-s,--signal=}'[Which signal to send]:signal:_signals' \
+        {-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]' \
+        '*::systemd-loginctl command:_systemd_loginctl_command'
+      ;;
+
+    *) _message 'eh?' ;;
+  esac
+
+}
+
+_hosts_or_user_at_host()
+{
+  _alternative \
+    'users-hosts:: _user_at_host' \
+    'hosts:: _hosts'
+}
+
+(( $+functions[_systemctl_command] )) || _systemctl_command()
+{
+  local -a _systemctl_cmds
+  _systemctl_cmds=(
+    "list-units:List units"
+    "start:Start (activate) one or more units"
+    "stop:Stop (deactivate) one or more units"
+    "reload:Reload one or more units"
+    "restart:Start or restart one or more units"
+    "condrestart:Restart one or more units if active"
+    "try-restart:Restart one or more units if active"
+    "reload-or-restart:Reload one or more units is possible, otherwise start or restart"
+    "force-reload:Reload one or more units is possible, otherwise restart if active"
+    "reload-or-try-restart:Reload one or more units is possible, otherwise restart if active"
+    "isolate:Start one unit and stop all others"
+    "kill:Send signal to processes of a unit"
+    "is-active:Check whether units are active"
+    "status:Show runtime status of one or more units"
+    "show:Show properties of one or more units/jobs or the manager"
+    "reset-failed:Reset failed state for all, one, or more units"
+    "load:Load one or more units"
+    "list-unit-files:List installed unit files"
+    "enable:Enable one or more unit files"
+    "disable:Disable one or more unit files"
+    "reenable:Reenable one or more unit files"
+    "preset:Enable/disable one or more unit files based on preset configuration"
+    "mask:Mask one or more units"
+    "unmask:Unmask one or more units"
+    "link:Link one or more units files into the search path"
+    "is-enabled:Check whether unit files are enabled"
+    "list-jobs:List jobs"
+    "cancel:Cancel all, one, or more jobs"
+    "dump:Dump server status"
+    "dot:Dump dependency graph for dot(1)"
+    "snapshot:Create a snapshot"
+    "delete:Remove one or more snapshots"
+    "show-environment:Dump environment"
+    "set-environment:Set one or more environment variables"
+    "unset-environment:Unset one or more environment variables"
+    "daemon-reload:Reload systemd manager configuration"
+    "daemon-reexec:Reexecute systemd manager"
+    "default:Enter system default mode"
+    "rescue:Enter system rescue mode"
+    "emergency:Enter system emergency mode"
+    "halt:Shut down and halt the system"
+    "poweroff:Shut down and power-off the system"
+    "reboot:Shut down and reboot the system"
+    "kexec:Shut down and reboot the system with kexec"
+    "exit:Ask for user instance termination"
+  )
+
+  if (( CURRENT == 1 )); then
+    _describe -t commands 'systemctl command' _systemctl_cmds || compadd "$@"
+  else
+    local curcontext="$curcontext"
+
+    cmd="${${_systemctl_cmds[(r)$words[1]:*]%%:*}}"
+    # Deal with any aliases
+    case $cmd in
+      condrestart) cmd="try-restart";;
+      force-reload) cmd="reload-or-try-restart";;
+    esac
+
+    if (( $#cmd )); then
+      curcontext="${curcontext%:*:*}:systemctl-${cmd}:"
+
+      local update_policy
+      zstyle -s ":completion:${curcontext}:" cache-policy update_policy
+      if [[ -z "$update_policy" ]]; then
+        zstyle ":completion:${curcontext}:" cache-policy _systemctl_caching_policy
+      fi
+
+      _call_function ret _systemctl_$cmd || _message 'no more arguments'
+    else
+      _message "unknown systemctl command: $words[1]"
+    fi
+    return ret
+  fi
+}
+
+__systemctl()
+{
+  systemctl --full --no-legend --no-pager "$@"
+}
+
+
+# Fills the unit list
+_systemctl_all_units()
+{
+  if ( [[ ${+_sys_all_units} -eq 0 ]] || _cache_invalid SYS_ALL_UNITS ) &&
+    ! _retrieve_cache SYS_ALL_UNITS;
+  then
+    _sys_all_units=( $(__systemctl list-units --all | { while read a b; do echo "$a"; done; }) )
+    _store_cache SYS_ALL_UNITS _sys_all_units
+  fi
+}
+
+# Fills the unit list including all file units
+_systemctl_really_all_units()
+{
+  local -a all_unit_files;
+  local -a really_all_units;
+  if ( [[ ${+_sys_really_all_units} -eq 0 ]] || _cache_invalid SYS_REALLY_ALL_UNITS ) &&
+    ! _retrieve_cache SYS_REALLY_ALL_UNITS;
+  then
+    all_unit_files=( $(__systemctl list-unit-files | { while read a b; do echo "$a"; done; }) )
+    _systemctl_all_units
+    really_all_units=($_sys_all_units $all_unit_files)
+    _sys_really_all_units=(${(u)really_all_units})
+    _store_cache SYS_REALLY_ALL_UNITS _sys_really_all_units
+  fi
+}
+
+_filter_units_by_property() {
+  local property=$1 value=$2 ; shift ; shift
+  local -a units ; units=($*)
+  local prop unit
+  for ((i=1; $i <= ${#units[*]}; i++)); do
+    # FIXME: "Failed to issue method call: Unknown unit" errors are ignored for
+    # now (related to DBUS_ERROR_UNKNOWN_OBJECT). in the future, we need to
+    # revert to calling 'systemctl show' once for all units, which is way
+    # faster
+    unit=${units[i]}
+    prop=$(systemctl show --no-pager --property="$property" ${unit} 2>/dev/null)
+    if [[ "${prop}" = "$property=$value" ]]; then
+      echo "${unit}"
+    fi
+  done
+}
+
+_systemctl_active_units()  {_sys_active_units=(  $(__systemctl list-units          | { while read a b; do echo "$a"; done; }) )}
+_systemctl_inactive_units(){_sys_inactive_units=($(__systemctl list-units --all    | { while read a b c d; do [[ $c == "inactive" ]] && echo "$a"; done; }) )}
+_systemctl_failed_units()  {_sys_failed_units=(  $(__systemctl list-units --failed | { while read a b; do echo "$a"; done; }) )}
+_systemctl_enabled_units() {_sys_enabled_units=( $(__systemctl list-unit-files     | { while read a b; do [[ $b == "enabled" ]] && echo "$a"; done; }) )}
+_systemctl_disabled_units(){_sys_disabled_units=($(__systemctl list-unit-files     | { while read a b; do [[ $b == "disabled" ]] && echo "$a"; done; }) )}
+_systemctl_masked_units()  {_sys_masked_units=(  $(__systemctl list-unit-files     | { while read a b; do [[ $b == "masked" ]] && echo "$a"; done; }) )}
+
+# Completion functions for ALL_UNITS
+for fun in is-active is-enabled status show mask preset ; do
+  (( $+functions[_systemctl_$fun] )) || _systemctl_$fun()
+  {
+    _systemctl_really_all_units
+    compadd "$@" -a - _sys_really_all_units
+  }
+done
+
+# Completion functions for ENABLED_UNITS
+for fun in disable reenable ; do
+  (( $+functions[_systemctl_$fun] )) || _systemctl_$fun()
+  {
+    _systemctl_enabled_units
+    compadd "$@" -a - _sys_enabled_units
+  }
+done
+
+# Completion functions for DISABLED_UNITS
+(( $+functions[_systemctl_enable] )) || _systemctl_enable()
+{
+  _systemctl_disabled_units
+  compadd "$@" -a - _sys_disabled_units
+}
+
+# Completion functions for FAILED_UNITS
+(( $+functions[_systemctl_reset-failed] )) || _systemctl_reset-failed()
+{
+  _systemctl_failed_units
+  compadd "$@" -a - _sys_failed_units || _message "no failed unit found"
+}
+
+# Completion functions for STARTABLE_UNITS
+(( $+functions[_systemctl_start] )) || _systemctl_start()
+{
+  _systemctl_inactive_units
+  compadd "$@" -a - _sys_inactive_units
+}
+
+# Completion functions for STOPPABLE_UNITS
+for fun in stop kill try-restart condrestart ; do
+  (( $+functions[_systemctl_$fun] )) || _systemctl_$fun()
+  {
+    _systemctl_active_units
+    compadd "$@" - $( _filter_units_by_property CanStop yes \
+      ${_sys_active_units[*]} )
+  }
+done
+
+# Completion functions for ISOLATABLE_UNITS
+(( $+functions[_systemctl_isolate] )) || _systemctl_isolate()
+{
+  _systemctl_all_units
+  compadd "$@" - $( _filter_units_by_property AllowIsolate yes \
+    ${_sys_all_units[*]} )
+}
+
+# Completion functions for RELOADABLE_UNITS
+for fun in reload reload-or-try-restart force-reload ; do
+  (( $+functions[_systemctl_$fun] )) || _systemctl_$fun()
+  {
+    _systemctl_active_units
+    compadd "$@" - $( _filter_units_by_property CanReload yes \
+      ${_sys_active_units[*]} )
+  }
+done
+
+# Completion functions for RESTARTABLE_UNITS
+for fun in restart reload-or-restart ; do
+  (( $+functions[_systemctl_$fun] )) || _systemctl_$fun()
+  {
+    _systemctl_all_units
+    compadd "$@" - $( _filter_units_by_property CanStart yes \
+      ${_sys_all_units[*]} | while read line; do \
+      [[ "$line" =~ \.(device|snapshot|socket|timer)$ ]] || echo "$line"; \
+      done )
+  }
+done
+
+# Completion functions for MASKED_UNITS
+(( $+functions[_systemctl_unmask] )) || _systemctl_unmask()
+{
+  _systemctl_masked_units
+  compadd "$@" -a - _sys_masked_units || _message "no masked unit found"
+}
+
+# Completion functions for JOBS
+(( $+functions[_systemctl_cancel] )) || _systemctl_cancel()
+{
+  compadd "$@" - $(__systemctl list-jobs \
+    | cut -d' ' -f1  2>/dev/null ) || _message "no job found"
+}
+
+# Completion functions for SNAPSHOTS
+(( $+functions[_systemctl_delete] )) || _systemctl_delete()
+{
+  compadd "$@" - $(__systemctl list-units --type snapshot --all \
+    | cut -d' ' -f1  2>/dev/null ) || _message "no snampshot found"
+}
+
+# Completion functions for ENVS
+for fun in set-environment unset-environment ; do
+  (( $+functions[_systemctl_$fun] )) || _systemctl_$fun()
+  {
+    local fun=$0 ; fun=${fun##_systemctl_}
+    local suf
+    if [[ "${fun}" = "set-environment" ]]; then
+      suf='-S='
+    fi
+
+    compadd "$@" ${suf} - $(systemctl show-environment \
+      | while read line; do echo "${line%%\=}";done )
+  }
+done
+
+(( $+functions[_systemctl_link] )) || _systemctl_link() { _files }
+
+# no systemctl completion for:
+#    [STANDALONE]='daemon-reexec daemon-reload default dot dump
+#                  emergency exit halt kexec list-jobs list-units
+#                  list-unit-files poweroff reboot rescue show-environment'
+#         [NAME]='snapshot load'
+
+_systemctl_caching_policy()
+{
+  local _sysunits
+  local -a oldcache
+
+  # rebuild if cache is more than a day old
+  oldcache=( "$1"(mh+1) )
+  (( $#oldcache )) && return 0
+
+  _sysunits=($(__systemctl --all | cut -d' ' -f1))
+
+  if (( $#_sysunits )); then
+    for unit in $_sysunits; do
+      [[ "$unit" -nt "$1" ]] && return 0
+    done
+  fi
+
+  return 1
+}
+
+
+
+_systemd_loginctl_all_sessions(){_sys_all_sessions=($(systemd-loginctl list-sessions | { while read a b; do echo "$a"; done; }) )}
+_systemd_loginctl_all_users()   {_sys_all_users=(   $(systemd-loginctl list-users    | { while read a b; do echo "$a"; done; }) )}
+_systemd_loginctl_all_seats()   {_sys_all_seats=(   $(systemd-loginctl list-seats    | { while read a b; do echo "$a"; done; }) )}
+
+# Completion functions for SESSIONS
+for fun in session-status show-session activate lock-session unlock-session terminate-session kill-session ; do
+  (( $+functions[_systemd_loginctl_$fun] )) || _systemd_loginctl_$fun()
+  {
+    _systemd_loginctl_all_sessions
+    compadd "$@" -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
+  (( $+functions[_systemd_loginctl_$fun] )) || _systemd_loginctl_$fun()
+  {
+    _systemd_loginctl_all_users
+    compadd "$@" -a - _sys_all_users
+  }
+done
+
+# Completion functions for SEATS
+(( $+functions[_systemd_loginctl_seats] )) || _systemd_loginctl_seats()
+{
+  _systemd_loginctl_all_seats
+  compadd "$@" -a - _sys_all_seats
+}
+for fun in seat-status show-seat terminate-seat ; do
+  (( $+functions[_systemd_loginctl_$fun] )) || _systemd_loginctl_$fun()
+  { _systemd_loginctl_seats }
+done
+
+# Completion functions for ATTACH
+(( $+functions[_systemd_loginctl_attach] )) || _systemd_loginctl_attach()
+{
+  _systemd_loginctl_all_seats
+
+  _arguments -w -C -S -s \
+    ':seat:_systemd_loginctl_seats' \
+    '*:device:_files'
+}
+
+# no systemd-loginctl completion for:
+# [STANDALONE]='list-sessions list-users list-seats flush-devices'
+
+(( $+functions[_systemd_loginctl_command] )) || _systemd_loginctl_command()
+{
+  local -a _systemd_loginctl_cmds
+  _systemd_loginctl_cmds=(
+    "list-sessions:List sessions"
+    "session-status:Show session status"
+    "show-session:Show properties of one or more sessions"
+    "activate:Activate a session"
+    "lock-session:Screen lock one or more sessions"
+    "unlock-session:Screen unlock one or more sessions"
+    "terminate-session:Terminate one or more sessions"
+    "kill-session:Send signal to processes of a session"
+    "list-users:List users"
+    "user-status:Show user status"
+    "show-user:Show properties of one or more users"
+    "enable-linger:Enable linger state of one or more users"
+    "disable-linger:Disable linger state of one or more users"
+    "terminate-user:Terminate all sessions of one or more users"
+    "kill-user:Send signal to processes of a user"
+    "list-seats:List seats"
+    "seat-status:Show seat status"
+    "show-seat:Show properties of one or more seats"
+    "attach:Attach one or more devices to a seat"
+    "flush-devices:Flush all device associations"
+    "terminate-seat:Terminate all sessions on one or more seats"
+  )
+
+  if (( CURRENT == 1 )); then
+    _describe -t commands 'systemd-loginctl command' _systemd_loginctl_cmds || compadd "$@"
+  else
+    local curcontext="$curcontext"
+
+    cmd="${${_systemd_loginctl_cmds[(r)$words[1]:*]%%:*}}"
+
+    if (( $#cmd )); then
+      curcontext="${curcontext%:*:*}:systemd_loginctl-${cmd}:"
+
+      _call_function ret _systemd_loginctl_$cmd || _message 'no more arguments'
+    else
+      _message "unknown systemd-loginctl command: $words[1]"
+    fi
+    return ret
+  fi
+}
+
+_systemd "$@"
+
+# Local Variables:
+# mode: sh
+# sh-indentation: 2
+# indent-tabs-mode: nil
+# sh-basic-offset: 2
+# End:
-- 
1.7.7.6
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