X-Git-Url: https://code.delx.au/gnu-emacs/blobdiff_plain/615a3b8d0d2c88cd664f1e0beb5a32b5b8e08f90..0e963201d03d9229bb8ac4323291d2b0119526ed:/lisp/windmove.el

diff --git a/lisp/windmove.el b/lisp/windmove.el
index 1deaa44c7d..7cfb7d5946 100644
--- a/lisp/windmove.el
+++ b/lisp/windmove.el
@@ -1,6 +1,6 @@
 ;;; windmove.el --- directional window-selection routines
 ;;
-;; Copyright (C) 1998-2011 Free Software Foundation, Inc.
+;; Copyright (C) 1998-2016 Free Software Foundation, Inc.
 ;;
 ;; Author: Hovav Shacham (hovav@cs.stanford.edu)
 ;; Created: 17 October 1998
@@ -94,7 +94,7 @@
 
 ;; Installation:
 ;;
-;; Put the following line in your `.emacs' file:
+;; Put the following line in your init file:
 ;;
 ;;     (windmove-default-keybindings)         ; shifted arrow keys
 ;;
@@ -118,7 +118,7 @@
 ;;     (setq windmove-window-distance-delta 2)
 ;;
 
-;; Acknowledgements:
+;; Acknowledgments:
 ;;
 ;; Special thanks to Julian Assange (proff@iq.org), whose
 ;; change-windows-intuitively.el predates Windmove, and provided the
@@ -417,17 +417,17 @@ supplied, if ARG is greater or smaller than zero, respectively."
                               (- (nth 3 edges) 1))))
       (cond
        ((> effective-arg 0)
-          top-left)
+	top-left)
        ((< effective-arg 0)
-          bottom-right)
+	bottom-right)
        ((= effective-arg 0)
-          (windmove-coord-add
-             top-left
-	     (let ((col-row
-		    (posn-col-row
-		     (posn-at-point (window-point window) window))))
-	       (cons (- (car col-row) (window-hscroll window))
-		     (cdr col-row)))))))))
+	(windmove-coord-add
+	 top-left
+	 ;; Don't care whether window is horizontally scrolled -
+	 ;; `posn-at-point' handles that already.  See also:
+	 ;; http://lists.gnu.org/archive/html/emacs-devel/2012-01/msg00638.html
+	 (posn-col-row
+	  (posn-at-point (window-point window) window))))))))
 
 ;; This uses the reference location in the current window (calculated
 ;; by `windmove-reference-loc' above) to find a reference location
@@ -459,24 +459,17 @@ movement is relative to."
                windmove-window-distance-delta))) ; (x, y1+d-1)
      (t (error "Invalid direction of movement: %s" dir)))))
 
+;; Rewritten on 2013-12-13 using `window-in-direction'.  After the
+;; pixelwise change the old approach didn't work any more.  martin
 (defun windmove-find-other-window (dir &optional arg window)
   "Return the window object in direction DIR.
 DIR, ARG, and WINDOW are handled as by `windmove-other-window-loc'."
-  (let* ((actual-current-window (or window (selected-window)))
-         (raw-other-window-loc
-          (windmove-other-window-loc dir arg actual-current-window))
-         (constrained-other-window-loc
-          (windmove-constrain-loc-for-movement raw-other-window-loc
-                                               actual-current-window
-                                               dir))
-         (other-window-loc
-          (if windmove-wrap-around
-            (windmove-wrap-loc-for-movement constrained-other-window-loc
-                                            actual-current-window)
-            constrained-other-window-loc)))
-    (window-at (car other-window-loc)
-               (cdr other-window-loc))))
-
+  (window-in-direction
+   (cond
+    ((eq dir 'up) 'above)
+    ((eq dir 'down) 'below)
+    (t dir))
+   window nil arg windmove-wrap-around t))
 
 ;; Selects the window that's hopefully at the location returned by
 ;; `windmove-other-window-loc', or screams if there's no window there.
@@ -486,17 +479,17 @@ DIR, ARG, and WINDOW are handled as by `windmove-other-window-loc'.
 If no window is at direction DIR, an error is signaled."
   (let ((other-window (windmove-find-other-window dir arg window)))
     (cond ((null other-window)
-           (error "No window %s from selected window" dir))
+           (user-error "No window %s from selected window" dir))
           ((and (window-minibuffer-p other-window)
                 (not (minibuffer-window-active-p other-window)))
-           (error "Minibuffer is inactive"))
+           (user-error "Minibuffer is inactive"))
           (t
            (select-window other-window)))))
 
 
 ;;; end-user functions
-;; these are all simple interactive wrappers to `windmove-do-
-;; window-select', meant to be bound to keys.
+;; these are all simple interactive wrappers to
+;; `windmove-do-window-select', meant to be bound to keys.
 
 ;;;###autoload
 (defun windmove-left (&optional arg)
@@ -553,7 +546,7 @@ If no window is at the desired location, an error is signaled."
 (defun windmove-default-keybindings (&optional modifier)
   "Set up keybindings for `windmove'.
 Keybindings are of the form MODIFIER-{left,right,up,down}.
-Default MODIFIER is 'shift."
+Default MODIFIER is `shift'."
   (interactive)
   (unless modifier (setq modifier 'shift))
   (global-set-key (vector (list modifier 'left))  'windmove-left)