dabbrev in minibuffer

[Dan Nicolaescu]

When editing in the minibuffer it would be nice if dabbrev-expand
would be able to use the minibuffer history as a source for
expansions. 
dabbrev only looks in buffers for expansions. So one way to solve this
would be to create a buffer that contains the minibuffer history and
put it at the beginning of the list of buffers.

I post the (very simple) code, maybe someone can figure out an elegant
way to integrate such a feature in emacs...

(defun minibuffer-setup-dabbrev-buffers ()
  (let ((buf (get-buffer-create " *dabbrev history* ")))
        (save-excursion 
          (set-buffer buf)
          (erase-buffer)
          (mapc (lambda (arg) 
                  (insert arg "\n")) 
                (if minibuffer-history-variable 
                    (eval minibuffer-history-variable)
                  minibuffer-history)))
        (append (list buf) (dabbrev--select-buffers))))

(defun minibuffer-setup-hook-dabbrev ()
  (setq dabbrev-select-buffers-function 'minibuffer-setup-dabbrev-buffers))

(add-hook 'minibuffer-setup-hook 'minibuffer-setup-hook-dabbrev)