`mouse-drag-mode-line-1' doesn't handle dragging header-line up

[John Paul Wallington]

Presently in HEAD, `mouse-drag-mode-line-1' doesn't handle dragging
the header-line up, only down.

We could partially revert to RC, like so:

--- /build-emacs/emacs/lisp/mouse.el.~1.241.~   Wed May 29 17:36:55 2002
+++ /build-emacs/emacs/lisp/mouse.el    Thu Nov 21 10:34:56 2002
@@ -438,8 +438,10 @@
                       (select-window start-event-window))
                   ;; no.  grow/shrink the selected window
                   ;(message "growth = %d" growth)
-                  (mouse-drag-move-window-bottom start-event-window growth))
-
+                  (if mode-line-p
+                      (mouse-drag-move-window-bottom start-event-window growth)
+                    (enlarge-window growth)))
+                
                 ;; if this window's growth caused another
                 ;; window to be deleted because it was too
                 ;; short, rescind the change.


Or instead of using `enlarge-window' in the nil `mode-line-p' case we
could use `mouse-drag-move-window-bottom' but move the window above,
like so:

(mouse-drag-move-window-bottom 
 (mouse-drag-window-above start-event-window) (- growth))


Or maybe there is a better fix.  WDYT?

-- 
John Paul Wallington