shell-completion: propose templates for disable/[re]enable/[re]start

Templates can be [re]enabled, on their own if the have DefaultInstance set,
and with an instance suffix in all cases. Propose just the template name
ending in @, to underline the instance suffix may have to be appended.

Likewise for start/restart.

This means that sometimes superflous units that one will not really
want to operate on will be proposed, but this seems better than
proposing a very incomplete set of names.

https://bugs.freedesktop.org/show_bug.cgi?id=66912

2 files changed, 24 insertions, 11 deletions

diff --git a/shell-completion/bash/systemctl.in b/shell-completion/bash/systemctl.in
index bca02310a..afa80dad7 100644
--- a/shell-completion/bash/systemctl.in
+++ b/shell-completion/bash/systemctl.in
@@ -53,6 +53,9 @@ __filter_units_by_property () {
 
 __get_all_units      () { { __systemctl $1 list-unit-files; __systemctl $1 list-units --all; } \
         | { while read -r a b; do echo " $a"; done; }; }
+__get_template_names () { __systemctl $1 list-unit-files \
+        | { while read -r a b; do [[ $a =~ @\. ]] && echo " ${a%%@.*}@"; done; }; }
+
 __get_active_units   () { __systemctl $1 list-units       \
         | { while read -r a b; do echo " $a"; done; }; }
 __get_startable_units () {
@@ -169,22 +172,26 @@ _systemctl () {
                 compopt -o filenames
 
         elif __contains_word "$verb" ${VERBS[DISABLED_UNITS]}; then
-                comps=$( __get_disabled_units $mode )
+                comps=$( __get_disabled_units $mode;
+                        __get_template_names $mode)
                 compopt -o filenames
 
         elif __contains_word "$verb" ${VERBS[REENABLABLE_UNITS]}; then
                 comps=$( __get_disabled_units $mode;
-                         __get_enabled_units $mode )
+                         __get_enabled_units $mode;
+                         __get_template_names $mode)
                 compopt -o filenames
 
         elif __contains_word "$verb" ${VERBS[STARTABLE_UNITS]}; then
                 comps=$( __filter_units_by_property $mode CanStart yes \
-                      $( __get_startable_units $mode))
+                        $( __get_startable_units $mode);
+                        __get_template_names $mode)
                 compopt -o filenames
 
         elif __contains_word "$verb" ${VERBS[RESTARTABLE_UNITS]}; then
                 comps=$( __filter_units_by_property $mode CanStart yes \
-                      $( __get_restartable_units $mode))
+                        $( __get_restartable_units $mode); \
+                        __get_template_names $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 ca4b899bb..1435dee72 100644
--- a/shell-completion/zsh/_systemctl.in
+++ b/shell-completion/zsh/_systemctl.in
@@ -139,6 +139,8 @@ _filter_units_by_property() {
 }
 
 _systemctl_all_units() { { __systemctl list-unit-files; __systemctl list-units --all; } | { while read -r a b; do echo -E - " $a"; done; } }
+_systemctl_get_template_names() { __systemctl list-unit-files | { while read -r a b; do  [[ $a =~ @\. ]] && echo -E - " ${a%%@.*}@"; done; } }
+
 
 _systemctl_active_units()  {_sys_active_units=(  $(__systemctl list-units          | { while read -r a b; do 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; }) )}
@@ -158,20 +160,24 @@ for fun in is-active is-failed is-enabled status show cat mask preset help list-
 done
 
 # Completion functions for ENABLED_UNITS
-for fun in disable reenable ; do
-  (( $+functions[_systemctl_$fun] )) || _systemctl_$fun()
-  {
+(( $+functions[_systemctl_disable] )) || _systemctl_disable()
+{
+    _systemctl_enabled_units
+    compadd "$@" -a - _sys_enabled_units
+}
+
+(( $+functions[_systemctl_reenable] )) || _systemctl_reenable()
+{
     _systemctl_enabled_units
     _systemctl_disabled_units
-    compadd "$@" -a - _sys_enabled_units _sys_disabled_units
-  }
-done
+    compadd "$@" -a - _sys_enabled_units _sys_disabled_units $(_systemctl_get_template_names)
+}
 
 # Completion functions for DISABLED_UNITS
 (( $+functions[_systemctl_enable] )) || _systemctl_enable()
 {
   _systemctl_disabled_units
-  compadd "$@" -a - _sys_disabled_units
+  compadd "$@" -a - _sys_disabled_units $(_systemctl_get_template_names)
 }
 
 # Completion functions for FAILED_UNITS