shell-completion: fix completion of inactive units

Units which not loaded were not proposed properly. OTOH, we should
filter units from get-unit-files by their state if they are currently
loaded. Bring zsh completions in line with bash completion, the same
logic should be used in both implementations.

https://bugzilla.redhat.com/show_bug.cgi?id=1024379
https://bugzilla.redhat.com/show_bug.cgi?id=790768
https://bugs.freedesktop.org/show_bug.cgi?id=84720

2 files changed, 18 insertions, 15 deletions

diff --git a/shell-completion/bash/systemctl.in b/shell-completion/bash/systemctl.in
index 015001815..bca02310a 100644
--- a/shell-completion/bash/systemctl.in
+++ b/shell-completion/bash/systemctl.in
@@ -55,10 +55,14 @@ __get_all_units      () { { __systemctl $1 list-unit-files; __systemctl $1 list-
         | { while read -r a b; do echo " $a"; done; }; }
 __get_active_units   () { __systemctl $1 list-units       \
         | { while read -r a b; do echo " $a"; done; }; }
-__get_startable_units () { {
-        __systemctl $1 list-units --all -t service,timer,socket,mount,automount,path,snapshot,swap
-        __systemctl $1 list-unit-files -t service,timer,socket,mount,automount,path,snapshot,swap; } \
-        | { while read -r a b c d; do [[ $c == "inactive" || $c == "failed" ]] && echo " $a"; done; }; }
+__get_startable_units () {
+        # find inactive or failed units, filter out masked and not-found
+        __systemctl $1 list-units --state inactive,failed -- $( __get_all_units ) | \
+                { while read -r a b c d; do [[ $b == "loaded" ]] && echo " $a"; done; }; }
+__get_restartable_units () {
+        # find !masked, filter out masked and not-found
+        __systemctl $1 list-units --state active,inactive,failed -- $( __get_all_units ) | \
+                { while read -r a b c d; do [[ $b == "loaded" ]] && echo " $a"; done; }; }
 __get_failed_units   () { __systemctl $1 list-units       \
         | { while read -r a b c d; do [[ $c == "failed"   ]] && echo " $a"; done; }; }
 __get_enabled_units  () { __systemctl $1 list-unit-files  \
@@ -180,10 +184,7 @@ _systemctl () {
 
         elif __contains_word "$verb" ${VERBS[RESTARTABLE_UNITS]}; then
                 comps=$( __filter_units_by_property $mode CanStart yes \
-                      $( __get_all_units $mode \
-                        | while read -r line; do \
-                                [[ "$line" =~ @\.|\.(device|snapshot|socket|timer)$ ]] || echo " $line"; \
-                        done ))
+                      $( __get_restartable_units $mode))
                 compopt -o filenames
 
         elif __contains_word "$verb" ${VERBS[STOPPABLE_UNITS]}; then
diff --git a/shell-completion/zsh/_systemctl.in b/shell-completion/zsh/_systemctl.in
index e681ec663..ca4b899bb 100644
--- a/shell-completion/zsh/_systemctl.in
+++ b/shell-completion/zsh/_systemctl.in
@@ -138,8 +138,11 @@ _filter_units_by_property() {
   done
 }
 
+_systemctl_all_units() { { __systemctl list-unit-files; __systemctl list-units --all; } | { while read -r a b; do echo -E - " $a"; done; } }
+
 _systemctl_active_units()  {_sys_active_units=(  $(__systemctl list-units          | { while read -r a b; do echo -E - " $a"; done; }) )}
-_systemctl_inactive_units(){_sys_inactive_units=($(__systemctl list-units --all    | { while read -r a b c d; do [[ $c == "inactive" || $c == "failed" ]] && echo -E - " $a"; done; }) )}
+_systemctl_startable_units(){_sys_startable_units=($(__systemctl list-units --state inactive,failed -- $(_systemctl_all_units) | { while read -r a b c d; do [[ $b == "loaded" ]] && echo -E - " $a"; done; }) )}
+_systemctl_restartable_units(){_sys_restartable_units=($(__systemctl list-units --state inactive,failed,active -- $(_systemctl_all_units) | { while read -r a b c d; do [[ $b == "loaded" ]] && echo -E - " $a"; done; }) )}
 _systemctl_failed_units()  {_sys_failed_units=(  $(__systemctl list-units --failed | { while read -r a b; do echo -E - " $a"; done; }) )}
 _systemctl_enabled_units() {_sys_enabled_units=( $(__systemctl list-unit-files     | { while read -r a b; do [[ $b == "enabled" ]] && echo -E - " $a"; done; }) )}
 _systemctl_disabled_units(){_sys_disabled_units=($(__systemctl list-unit-files     | { while read -r a b; do [[ $b == "disabled" ]] && echo -E - " $a"; done; }) )}
@@ -181,8 +184,9 @@ done
 # Completion functions for STARTABLE_UNITS
 (( $+functions[_systemctl_start] )) || _systemctl_start()
 {
-  _systemctl_inactive_units
-  compadd "$@" -a - _sys_inactive_units
+   _systemctl_startable_units
+   compadd "$@" - $( _filter_units_by_property CanStart yes \
+      ${_sys_startable_units[*]} )
 }
 
 # Completion functions for STOPPABLE_UNITS
@@ -217,11 +221,9 @@ done
 for fun in restart reload-or-restart ; do
   (( $+functions[_systemctl_$fun] )) || _systemctl_$fun()
   {
-    _systemctl_all_units
+    _systemctl_restartable_units
     compadd "$@" - $( _filter_units_by_property CanStart yes \
-      ${_sys_all_units[*]} | while read -r line; do \
-      [[ "$line" =~ \.device$ ]] || echo -E - " $line"; \
-      done )
+      ${_sys_restartable_units[*]} )
   }
 done