anchor.diff:  
   (define-command (twitter verify) () (:documentation "Perform an ACCOUNT/VERIFY-CREDENTIALS call to see if the account was linked successfully.")
     (let ((user (chirp:account/verify-credentials)))
  -    (respond event "Linked account: ~a" (screen-name user))))
  +    (respond event "Linked account: ~a" (chirp:screen-name user))))
   
   (define-command (twitter initiate-authentication) (&optional api-key api-secret) (:authorization T :documentation "Initiate the authentication process.")
     (respond event "Please visit: ~a" (chirp:initiate-authentication :api-key (or api-key chirp:*oauth-api-key*) :api-secret (or api-secret chirp:*oauth-api-secret*))))
  
positive.code: (define-command (twitter complete-authentication) (pin) (:authorization T :documentation "Complete the authentication process.")
    (chirp:complete-authentication pin)
    (let ((user (chirp:account/verify-credentials)))
      (respond event "Successfully authenticated as ~a" (screen-name user))))
  
  (define-command (twitter tweet) (&rest text) (:authorization T :documentation "Tweet on behalf of the linked user.")
    (chirp:tweet (format NIL "~{~a~^ ~}" text)))
  
negative.code: 
  (in-package :org.tymoonnext.colleen)
  (defpackage org.tymoonnext.colleen.mod.twitter
    (:use :cl :colleen :events))
  (in-package :org.tymoonnext.colleen.mod.twitter)
  
  (define-module twitter ()
  