Thought I'd help, for the newest people under us, or maybe even the more experienced ones....

code:

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function CommandParser (Message) {
   //If Message is not undefined, pass it to 'Parse'
   if (Message) this.Parse(Message);

   this.Parse = function (Message) {
      //A RegExp to check if it is a command... with params if possible
      //PM me if you need any help with this step
      this.IsCommand = /^\/([^\s]+)(?:\s+(.+))?/i.test(Message)
      if (this.IsCommand) {
         //If it is a command, the commandname and params are stored
         this.Command = RegExp.$1
         this.Param = (RegExp.$2 === "") ? undefined : RegExp.$2
      } else {
         //Else, they are set to undefined
         this.Command = undefined
         this.Param = undefined
      }
   }
   //Check if the command parsed is a given command (compare)
   this.CommandIs = function (Command) {
      if (this.IsCommand) {
         return (this.Command.toLowerCase() == Command.toLowerCase())
      }
   }
   //Return the parameters if any, split when necesary, or else return undefined
   //RegExp's can be used as Delimiter, to check if the're multiple spaces
   //Like in my example
   this.Params = function(Delimiter){
      if (this.IsCommand) {
         return (this.Param == undefined) ? undefined : (Delimiter) ? this.Param.split(Delimiter) : this.Param
      }
   }
}

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code:

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function OnEvent_ChatWndSendMessage (ChatWnd, Message) {
   var Parser = new CommandParser(Message)
   //Could also be written as:
   //var Parser = new CommandParser()
   //Parser.Parse(Message)
   //Or you could set Parser as a global var...
   if (Parser.CommandIs("ShowLog")) {
      var Emails = Parser.Params(/\s+/)
      if (Emails) {
         for (Offset in Emails) {
            //Call a custom function
            ShowLog(Emails[Offset])
         }
         Message = ""
      }
   }
   return Message
}

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