--- a/lisp/prim/frame.el	Mon Aug 13 09:12:43 2007 +0200
+++ b/lisp/prim/frame.el	Mon Aug 13 09:13:56 2007 +0200
@@ -1022,6 +1022,9 @@
 	(append (list save-frame) frames)
       frames)))
 
+(defvar temp-buffer-shrink-to-fit t
+  "*When non-nil resize temporary output buffers to minimize blank lines.")
+
 (defun show-temp-buffer-in-current-frame (buffer)
   "For use as the value of temp-buffer-show-function:
 always displays the buffer in the current frame, regardless of the behavior
@@ -1035,7 +1038,8 @@
       (setq minibuffer-scroll-window window)
       (set-window-start window 1) ; obeys narrowing
       (set-window-point window 1)
-      (shrink-window-if-larger-than-buffer window)
+      (when temp-buffer-shrink-to-fit
+	(shrink-window-if-larger-than-buffer window))
       nil)))
 
 (setq pre-display-buffer-function 'get-frame-for-buffer)