Add auto-completion for puppet man:

Provides auto-complete options for puppet man sub-command.

custom/plugins/puppet/_puppet

@@ -350,6 +350,14 @@ _kick_arguments=(
   '--ping:Do an ICMP echo against the target host'
 )
 
+local -a _man_arguments
+_man_arguments=(
+  'man:Display the manual page for a Puppet subcommand'
+  '--render-as:FORMAT The rendering format to use'
+  '--verbose:Whether to log verbosely'
+  '--debug:Whether to log debug information'
+)
+
 
 __task_list ()
 {
@@ -701,6 +709,23 @@ __puppet-kick ()
   esac
 }
 
+__puppet-man ()
+{
+  local curcontext="$curcontext" state line
+  typeset -A opt_args
+
+  _arguments -C \
+    ':command:->command' \
+    '*::options:->options'
+
+  case $state in
+    (command)
+      _describe -t commands "gem subcommand" _man_arguments
+      return
+    ;;
+  esac
+}
+
 
 
 local expl
@@ -825,6 +850,11 @@ case $state in
       (kick)
           __puppet-kick
       ;;
+
+      # Display sub-commands for puppet man.
+      (man)
+          __puppet-man
+      ;;
     esac
   ;;
 esac