brew_zsh_completion: add brew services support

Closes Homebrew/homebrew#26105.

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>

Library/Contributions/brew_zsh_completion.zsh

@@ -22,6 +22,10 @@ _brew_outdated_formulae() {
   outdated_formulae=(`brew outdated`)
 }
 
+_brew_running_services() {
+  running_services=(`brew services list | awk '{print $1}'`)
+}
+
 local -a _1st_arguments
 _1st_arguments=(
   'audit:check formulae for Homebrew coding style'
@@ -47,6 +51,7 @@ _1st_arguments=(
   'remove:remove a formula'
   'search:search for a formula (/regex/ or string)'
   'server:start a local web app that lets you browse formulae (requires Sinatra)'
+  'services:small wrapper around `launchctl` for supported formulae'
   'tap:tap a new formula repository from GitHub, or list existing taps'
   'unlink:unlink a formula'
   'unpin:unpin specified formulae'
@@ -56,8 +61,17 @@ _1st_arguments=(
   'uses:show formulae which depend on a formula'
 )
 
+local -a _service_arguments
+_service_arguments=(
+  'cleanup:get rid of stale services and unused plists'
+  'list:list all services managed by `brew services`'
+  'restart:gracefully restart selected service'
+  'start:start selected service'
+  'stop:stop selected service'
+)
+
 local expl
-local -a formulae installed_formulae installed_taps outdated_formulae
+local -a formulae installed_formulae installed_taps outdated_formulae running_services
 
 _arguments \
   '(-v)-v[verbose]' \
@@ -76,31 +90,41 @@ if (( CURRENT == 1 )); then
 fi
 
 case "$words[1]" in
-  search|-S)
+  install|reinstall|audit|home|homepage|log|info|abv|uses|cat|deps|edit|options)
-    _arguments \
+    _brew_all_formulae
-      '(--macports)--macports[search the macports repository]' \
+    _wanted formulae expl 'all formulae' compadd -a formulae ;;
-      '(--fink)--fink[search the fink repository]' ;;
   list|ls)
     _arguments \
       '(--unbrewed)--unbrewed[files in brew --prefix not controlled by brew]' \
       '(--pinned)--pinned[list all versions of pinned formulae]' \
       '(--versions)--versions[list all installed versions of a formula]' \
-      '1: :->forms' &&  return 0
+      '1: :->forms' && return 0
 
       if [[ "$state" == forms ]]; then
         _brew_installed_formulae
         _wanted installed_formulae expl 'installed formulae' compadd -a installed_formulae
       fi ;;
-  install|reinstall|audit|home|homepage|log|info|abv|uses|cat|deps|edit|options)
-    _brew_all_formulae
-    _wanted formulae expl 'all formulae' compadd -a formulae ;;
   remove|rm|uninstall|unlink|cleanup|link|ln|pin|unpin)
     _brew_installed_formulae
     _wanted installed_formulae expl 'installed formulae' compadd -a installed_formulae ;;
-  upgrade)
+  search|-S)
-    _brew_outdated_formulae
+    _arguments \
-    _wanted outdated_formulae expl 'outdated formulae' compadd -a outdated_formulae ;;
+      '(--macports)--macports[search the macports repository]' \
+      '(--fink)--fink[search the fink repository]' ;;
+  services)
+    if [[ -n "$words[2]" ]]; then
+      case "$words[2]" in
+        restart|start|stop)
+          _brew_running_services
+          _wanted running_services expl 'running services' compadd -a running_services ;;
+      esac
+    else
+      _describe -t commands "brew services subcommand" _service_arguments
+    fi ;;
   untap)
     _brew_installed_taps
     _wanted installed_taps expl 'installed taps' compadd -a installed_taps ;;
+  upgrade)
+    _brew_outdated_formulae
+    _wanted outdated_formulae expl 'outdated formulae' compadd -a outdated_formulae ;;
 esac