redirect gist urls to raw gist.

w3m-redirect.el

;;; When opening gist pages on w3m, redirect automatically to the raw plaintext 
;;; counterpart.  
;;; http://puntoblogspot.blogspot.com/2012/02/w3m-redirect-automatically.html
;;; Raimon Grau

(defun rgc/w3m-follow-raw (arg)
  "redirect to raw gist on w3m"
  (interactive)
  (when (string-match "https?://gist.github.com" arg)
    (search-forward "raw")
    (w3m-view-this-url)))

(add-hook 'w3m-display-hook 'rgc/w3m-follow-raw)