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### 4.5 Defining a new command

Here's a simple new command, `/sv`. With it, you can boast about your IRC client. It shows how you can use `defun-rcirc-command` to define new commands.

We're waiting for the definition of this command until `rcirc` is loaded because `defun-rcirc-command` is not yet available, and without `rcirc` loaded, the command wouldn't do us much good anyway.

         (eval-after-load 'rcirc
           '(defun-rcirc-command sv (arg)
              "Boast about rcirc."
              (interactive "i")
              (rcirc-send-message process target
                                  (concat "I use " rcirc-id-string))))