Use window-full-height-p.

lisp/ChangeLog

 2009-10-06  Glenn Morris  <rgm@gnu.org>
 
+	* emerge.el (emerge-show-file-name):
+	* calc/calc.el (calc-quit):
+	* calc/calc-misc.el (calc-big-or-small):
+	* calc/calc-graph.el (calc-graph-view):
+	* calc/calc-ext.el (calc-reset):
+	* calendar/calendar.el (calendar-basic-setup):
+	Use window-full-height-p.
+
 	* mail/rmailedit.el (rmail-cease-edit): If there is a Content-Type
 	header we don't understand, don't insert another.  (Bug#4624)
 	If changing mime charset, insert the new one in the right place.

lisp/calc/calc-ext.el

@@ -1343,7 +1343,7 @@ calc-kill calc-kill-region calc-yank))))
        ;; take up the whole height of the frame.
        (if (and
             win
-            (< (window-height win) (1- (frame-height))))
+	    (not (window-full-height-p)))
            (let ((height (- (window-height win) 2)))
              (set-window-point win (point))
              (or (= height calc-window-height)

lisp/calc/calc-graph.el

@@ -1388,7 +1388,7 @@ This \"dumb\" driver will be present in Gnuplot 3.0."
 	      (set-window-buffer win buf)
 	    (if (eq major-mode 'calc-mode)
 		(if (or need
-			(< (window-height) (1- (frame-height))))
+			(not (window-full-height-p)))
 		    (display-buffer buf))
 	      (switch-to-buffer buf)))))
     (save-excursion

lisp/calc/calc-misc.el

@@ -140,8 +140,8 @@ Calc user interface as before (either C-x * C or C-x * K; initially C-x * C).
     (if cwin
 	(setq calc-full-mode
 	      (if kwin
-		  (and twin (eq (window-width twin) (frame-width)))
-		(eq (window-height cwin) (1- (frame-height))))))
+		  (and twin (window-full-width-p twin))
+		(window-full-height-p cwin))))
     (setq calc-full-mode (if arg
 			     (> (prefix-numeric-value arg) 0)
 			   (not calc-full-mode)))

lisp/calc/calc.el

@@ -1496,7 +1496,7 @@ commands given here will actually operate on the *Calculator* stack."
         ;; next time Calc is called, the window will be the same size
         ;; as the current window.
         (if (and win
-                 (< (window-height win) (1- (frame-height)))
+		 (not (window-full-height-p win))
                  (window-full-width-p win) ; avoid calc-keypad
                  (not (get-buffer-window "*Calc Keypad*")))
             (setq calc-window-height (- (window-height win) 2)))

lisp/calendar/calendar.el

@@ -1320,9 +1320,9 @@ display the generated calendar."
       ;; Is this a wide frame?  If so, split it horizontally.
       (if (window-splittable-p t) (split-window-horizontally))
       (pop-to-buffer calendar-buffer)
-      ;; Has the window already been split vertically?  (See bug#4543)
+      ;; Has the window already been split vertically?
       (when (and (not (window-dedicated-p))
-                 (= (window-height) (window-height (frame-root-window))))
+                 (window-full-height-p))
         (let ((win (split-window-vertically)))
           ;; Show something else in the upper window.
           (switch-to-buffer (other-buffer))

lisp/emerge.el

@@ -3103,10 +3103,9 @@ SPC, it is ignored; if it is anything else, it is processed as a command."
 	  (progn
 	    (erase-buffer)
 	    (insert name)
-	    (if (not (pos-visible-in-window-p))
-		(while (and (not (pos-visible-in-window-p))
-			    (> (1- (frame-height)) (window-height)))
-		  (enlarge-window 1)))
+	    (while (and (not (pos-visible-in-window-p))
+			(not (window-full-height-p)))
+	      (enlarge-window 1))
 	    (let* ((echo-keystrokes 0)
 		   (c (read-event)))
 	      (if (not (eq c 32))

lisp/mh-e/ChangeLog

+2009-10-06  Glenn Morris  <rgm@gnu.org>
+
+	* mh-show.el (mh-show-msg): Use window-full-height-p.
+
 2009-08-28  Stefan Monnier  <monnier@iro.umontreal.ca>
 
 	* mh-comp.el (mh-send-letter): default-buffer-file-coding-system

lisp/mh-e/mh-show.el

@@ -148,9 +148,11 @@ displayed."
             (if (not clean-message-header)
                 (mh-start-of-uncleaned-message)))
         (mh-display-msg msg folder)))
-    (if (not (= (1+ (window-height)) (frame-height))) ;not horizontally split
-        (shrink-window (- (window-height) (or mh-summary-height
-                                              (mh-summary-height)))))
+    (unless (if (fbound 'window-full-height-p)
+                (window-full-height-p)
+              (= (1+ (window-height)) (frame-height))) ; not vertically split
+      (shrink-window (- (window-height) (or mh-summary-height
+                                            (mh-summary-height)))))
     (mh-recenter nil)
     ;; The following line is a nop which forces update of the scan line so
     ;; that font-lock will update it (if needed)...