Change the way aliases to subcommands are handled.

worker/uniter/jujuc/config-get.go

 package jujuc
 
 import (
         "launchpad.net/gnuflag"
         "launchpad.net/juju-core/cmd"
 )
 
 // ConfigGetCommand implements the config-get command.
 type ConfigGetCommand struct {
         ctx Context
         Key string // The key to show. If empty, show all.
         out cmd.Output
 }
 
 func NewConfigGetCommand(ctx Context) cmd.Command {
         return &ConfigGetCommand{ctx: ctx}
 }
 
 func (c *ConfigGetCommand) Info() *cmd.Info {
-        return cmd.NewInfo(
-                "config-get", "[<key>]",
-                "print service configuration",
-                "If a key is given, only the value for that key will be printed.",
-        )
+        return &cmd.Info{
+                Name:    "config-get",
+                Args:    "[<key>]",
+                Purpose: "print service configuration",
+                Doc:     "If a key is given, only the value for that key will be printed.",
+        }
 }
 
 func (c *ConfigGetCommand) SetFlags(f *gnuflag.FlagSet) {
         c.out.AddFlags(f, "smart", cmd.DefaultFormatters)
 }
 
 func (c *ConfigGetCommand) Init(args []string) error {
         if args == nil {
                 return nil
         }
         c.Key = args[0]
         return cmd.CheckEmpty(args[1:])
 }
 
 func (c *ConfigGetCommand) Run(ctx *cmd.Context) error {
         cfg, err := c.ctx.Config()
         if err != nil {
                 return err
         }
         var value interface{}
         if c.Key == "" {
                 value = cfg
         } else {
                 value, _ = cfg[c.Key]
         }
         return c.out.Write(ctx, value)
 }