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diff --git a/elisp/geiser-popup.el b/elisp/geiser-popup.el
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+;; geiser-popup.el -- popup windows
+
+;; Copyright (C) 2009 Jose Antonio Ortega Ruiz
+
+;; Author: Jose Antonio Ortega Ruiz <jao@gnu.org>
+;; Start date: Sat Feb 07, 2009 14:05
+
+;; This file is free software; you can redistribute it and/or modify
+;; it under the terms of the GNU General Public License as published by
+;; the Free Software Foundation; either version 3 of the License, or
+;; (at your option) any later version.
+
+;; This file is distributed in the hope that it will be useful,
+;; but WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+;; GNU General Public License for more details.
+
+;; You should have received a copy of the GNU General Public License
+;; along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+;;; Comentary:
+
+;; Utilities for defining pop-up windows that get easily out of the
+;; way.
+
+;;; Code:
+
+(make-variable-buffer-local
+ (defvar geiser-popup--created-window nil))
+
+(make-variable-buffer-local
+ (defvar geiser-popup--selected-window nil))
+
+(defun geiser-popup--display (&optional buffer)
+  (when buffer (set-buffer buffer))
+  (let ((selected-window (selected-window))
+        (buffer (current-buffer)))
+    (unless (eq selected-window (get-buffer-window buffer))
+      (let ((windows))
+        (walk-windows (lambda (w) (push w windows)) nil t)
+        (prog1 (pop-to-buffer buffer)
+          (set (make-local-variable 'geiser-popup--created-window)
+               (unless (memq (selected-window) windows) (selected-window)))
+          (set (make-local-variable 'geiser-popup--selected-window)
+               selected-window))))))
+
+(defun geiser-popup--quit ()
+  (interactive)
+  (let ((selected geiser-popup--selected-window)
+        (created geiser-popup--created-window))
+    (bury-buffer)
+    (when (eq created (selected-window)) (delete-window created))
+    (when (window-live-p selected) (select-window selected))))
+
+(define-minor-mode geiser-popup-mode
+  "Mode for displaying read only stuff"
+  nil nil
+  '(("q" . geiser-popup--quit))
+  (setq buffer-read-only t))
+
+(defmacro geiser-popup--define (base name mode)
+  (let ((get-buff (intern (format "geiser-%s--buffer" base)))
+        (pop-buff (intern (format "geiser-%s--pop-to-buffer" base)))
+        (with-macro (intern (format "geiser-%s--with-buffer" base)))
+        (method (make-symbol "method")))
+  `(progn
+     (defun ,get-buff ()
+       (or (get-buffer ,name)
+           (with-current-buffer (get-buffer-create ,name)
+             (,mode)
+             (geiser-popup-mode)
+             (current-buffer))))
+     (defun ,pop-buff (&optional ,method)
+       (cond ((eq ,method 'buffer) (switch-to-buffer (,get-buff)))
+             ((eq ,method 'frame) (switch-to-buffer-other-frame (,get-buff)))
+             (t (geiser-popup--display (,get-buff)))))
+     (defmacro ,with-macro (&rest body)
+       (let ((buff ',get-buff))
+         `(with-current-buffer (funcall ',buff)
+            (let ((inhibit-read-only t))
+              ,@body))))
+     (put ',with-macro 'lisp-indent-function 'defun))))
+
+(put 'geiser-popup--define 'lisp-indent-function 1)
+
+
+(provide 'geiser-popup)
+;;; geiser-popup.el ends here