Customize PAREDIT

I love PAREDIT on the whole, but hate the default behavior of ';' and ')'. So here how to fix this and made PAREDIT slightly less aggressive (should be added into the ~/.emacs file):

(require 'paredit)
(eval-after-load 'paredit
  '(progn
     (define-key paredit-mode-map (kbd ";")   'self-insert-command)
     (define-key paredit-mode-map (kbd ")")   'paredit-close-parenthesis)
     (define-key paredit-mode-map (kbd "M-)") 'paredit-close-parenthesis-and-newline)))

SBCL and default location for ASDF-INSTALL

To make asdf-install find default location in sbcl:

(fmakunbound 'asdf-install::where)
(defun asdf-install::where ()
  (first asdf-install::*locations*))

This tip's been given by xach