&bull; *`/alias`* `[[-completion completion] alias_name [command [arguments]]]`::

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  create an alias for a command

  completion: completion for alias (optional, by default completion is done with target command)
  alias_name: name of alias (can start or end with "*" for alias listing)
     command: command name (many commands can be separated by semicolons)
   arguments: arguments for command
  
  Without argument, this command lists all defined alias.
  
  Note: in command, special variables are replaced:
          $n: argument 'n' (between 1 and 9)
         $-m: arguments from 1 to 'm'
         $n-: arguments from 'n' to last
        $n-m: arguments from 'n' to 'm'
          $*: all arguments
          $~: last argument
       $nick: current nick
    $channel: current channel
     $server: current server
  
  To remove an alias, use command /unalias.
  
  Examples:
    alias /split to split window horizontally:
      /alias split /window splith
    alias /hello to say "hello" on all channels but not on #weechat:
      /alias hello /allchan -exclude=#weechat msg * hello
    alias /forcejoin to send IRC command "forcejoin" with completion of /sajoin:
      /alias -completion %%sajoin forcejoin /quote forcejoin
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