1 files changed, 264 insertions, 375 deletions

diff --git a/src/window.c b/src/window.c
index 193f7eecd0e..0ec72168ace 100644
--- a/src/window.c
+++ b/src/window.c
@@ -58,34 +58,32 @@ Lisp_Object Qdisplay_buffer;
 Lisp_Object Qscroll_up, Qscroll_down, Qscroll_command;
 Lisp_Object Qwindow_size_fixed;
 
-extern Lisp_Object Qleft_margin, Qright_margin;
-
-static int displayed_window_lines P_ ((struct window *));
-static struct window *decode_window P_ ((Lisp_Object));
-static int count_windows P_ ((struct window *));
-static int get_leaf_windows P_ ((struct window *, struct window **, int));
-static void window_scroll P_ ((Lisp_Object, int, int, int));
-static void window_scroll_pixel_based P_ ((Lisp_Object, int, int, int));
-static void window_scroll_line_based P_ ((Lisp_Object, int, int, int));
-static int window_min_size_1 P_ ((struct window *, int, int));
-static int window_min_size_2 P_ ((struct window *, int, int));
-static int window_min_size P_ ((struct window *, int, int, int, int *));
-static void size_window P_ ((Lisp_Object, int, int, int, int, int));
-static int freeze_window_start P_ ((struct window *, void *));
-static int window_fixed_size_p P_ ((struct window *, int, int));
-static void enlarge_window P_ ((Lisp_Object, int, int));
-static Lisp_Object window_list P_ ((void));
-static int add_window_to_list P_ ((struct window *, void *));
-static int candidate_window_p P_ ((Lisp_Object, Lisp_Object, Lisp_Object,
-                                   Lisp_Object));
-static Lisp_Object next_window P_ ((Lisp_Object, Lisp_Object,
-                                    Lisp_Object, int));
-static void decode_next_window_args P_ ((Lisp_Object *, Lisp_Object *,
-                                         Lisp_Object *));
-static int foreach_window_1 P_ ((struct window *,
-                                 int (* fn) (struct window *, void *),
-                                 void *));
-static Lisp_Object window_list_1 P_ ((Lisp_Object, Lisp_Object, Lisp_Object));
+static int displayed_window_lines (struct window *);
+static struct window *decode_window (Lisp_Object);
+static int count_windows (struct window *);
+static int get_leaf_windows (struct window *, struct window **, int);
+static void window_scroll (Lisp_Object, int, int, int);
+static void window_scroll_pixel_based (Lisp_Object, int, int, int);
+static void window_scroll_line_based (Lisp_Object, int, int, int);
+static int window_min_size_1 (struct window *, int, int);
+static int window_min_size_2 (struct window *, int, int);
+static int window_min_size (struct window *, int, int, int, int *);
+static void size_window (Lisp_Object, int, int, int, int, int);
+static int freeze_window_start (struct window *, void *);
+static int window_fixed_size_p (struct window *, int, int);
+static void enlarge_window (Lisp_Object, int, int);
+static Lisp_Object window_list (void);
+static int add_window_to_list (struct window *, void *);
+static int candidate_window_p (Lisp_Object, Lisp_Object, Lisp_Object,
+                               Lisp_Object);
+static Lisp_Object next_window (Lisp_Object, Lisp_Object,
+                                Lisp_Object, int);
+static void decode_next_window_args (Lisp_Object *, Lisp_Object *,
+                                     Lisp_Object *);
+static int foreach_window_1 (struct window *,
+                             int (* fn) (struct window *, void *),
+                             void *);
+static Lisp_Object window_list_1 (Lisp_Object, Lisp_Object, Lisp_Object);
 
 /* This is the window in which the terminal's cursor should
    be left when nothing is being done with it.  This must
@@ -192,36 +190,29 @@ static int window_scroll_preserve_vpos;
 static int inhibit_frame_unsplittable;
 #endif /* 0 */
 
-extern EMACS_INT scroll_margin;
-
-extern Lisp_Object Qwindow_scroll_functions, Vwindow_scroll_functions;
-
 /* If non-nil, then the `recenter' command with a nil argument
    the entire frame to be redrawn; the special value `tty' causes the
    frame to be redrawn only if it is a tty frame.  */
 
 static Lisp_Object Vrecenter_redisplay;
-extern Lisp_Object Qtty;
 
 
 DEFUN ("windowp", Fwindowp, Swindowp, 1, 1, 0,
        doc: /* Return t if OBJECT is a window.  */)
-     (object)
-     Lisp_Object object;
+  (Lisp_Object object)
 {
   return WINDOWP (object) ? Qt : Qnil;
 }
 
 DEFUN ("window-live-p", Fwindow_live_p, Swindow_live_p, 1, 1, 0,
        doc: /* Return t if OBJECT is a window which is currently visible.  */)
-     (object)
-     Lisp_Object object;
+  (Lisp_Object object)
 {
   return WINDOW_LIVE_P (object) ? Qt : Qnil;
 }
 
 Lisp_Object
-make_window ()
+make_window (void)
 {
   Lisp_Object val;
   register struct window *p;
@@ -244,9 +235,9 @@ make_window ()
   p->dedicated = Qnil;
   p->window_parameters = Qnil;
   p->pseudo_window_p = 0;
-  bzero (&p->cursor, sizeof (p->cursor));
-  bzero (&p->last_cursor, sizeof (p->last_cursor));
-  bzero (&p->phys_cursor, sizeof (p->phys_cursor));
+  memset (&p->cursor, 0, sizeof (p->cursor));
+  memset (&p->last_cursor, 0, sizeof (p->last_cursor));
+  memset (&p->phys_cursor, 0, sizeof (p->phys_cursor));
   p->desired_matrix = p->current_matrix = 0;
   p->nrows_scale_factor = p->ncols_scale_factor = 1;
   p->phys_cursor_type = -1;
@@ -275,7 +266,7 @@ make_window ()
 
 DEFUN ("selected-window", Fselected_window, Sselected_window, 0, 0, 0,
        doc: /* Return the window that the cursor now appears in and commands apply to.  */)
-     ()
+  (void)
 {
   return selected_window;
 }
@@ -284,8 +275,7 @@ DEFUN ("minibuffer-window", Fminibuffer_window, Sminibuffer_window, 0, 1, 0,
        doc: /* Return the window used now for minibuffers.
 If the optional argument FRAME is specified, return the minibuffer window
 used by that frame.  */)
-     (frame)
-    Lisp_Object frame;
+  (Lisp_Object frame)
 {
   if (NILP (frame))
     frame = selected_frame;
@@ -296,8 +286,7 @@ used by that frame.  */)
 DEFUN ("window-minibuffer-p", Fwindow_minibuffer_p, Swindow_minibuffer_p, 0, 1, 0,
        doc: /* Return non-nil if WINDOW is a minibuffer window.
 WINDOW defaults to the selected window.  */)
-     (window)
-     Lisp_Object window;
+  (Lisp_Object window)
 {
   struct window *w = decode_window (window);
   return MINI_WINDOW_P (w) ? Qt : Qnil;
@@ -321,8 +310,7 @@ of the window.  The remaining elements are omitted if the character after
 POS is fully visible; otherwise, RTOP and RBOT are the number of pixels
 off-window at the top and bottom of the row, ROWH is the height of the
 display row, and VPOS is the row number (0-based) containing POS.  */)
-     (pos, window, partially)
-     Lisp_Object pos, window, partially;
+  (Lisp_Object pos, Lisp_Object window, Lisp_Object partially)
 {
   register struct window *w;
   register int posint;
@@ -390,8 +378,7 @@ of the (first) text line, YPOS is negative.
 
 Return nil if window display is not up-to-date.  In that case, use
 `pos-visible-in-window-p' to obtain the information.  */)
-     (line, window)
-     Lisp_Object line, window;
+  (Lisp_Object line, Lisp_Object window)
 {
   register struct window *w;
   register struct buffer *b;
@@ -484,8 +471,7 @@ Return nil if window display is not up-to-date.  In that case, use
 
 
 static struct window *
-decode_window (window)
-     register Lisp_Object window;
+decode_window (register Lisp_Object window)
 {
   if (NILP (window))
     return XWINDOW (selected_window);
@@ -495,8 +481,7 @@ decode_window (window)
 }
 
 static struct window *
-decode_any_window (window)
-     register Lisp_Object window;
+decode_any_window (register Lisp_Object window)
 {
   if (NILP (window))
     return XWINDOW (selected_window);
@@ -508,8 +493,7 @@ decode_any_window (window)
 DEFUN ("window-buffer", Fwindow_buffer, Swindow_buffer, 0, 1, 0,
        doc: /* Return the buffer that WINDOW is displaying.
 WINDOW defaults to the selected window.  */)
-     (window)
-     Lisp_Object window;
+  (Lisp_Object window)
 {
   return decode_window (window)->buffer;
 }
@@ -518,9 +502,11 @@ DEFUN ("window-height", Fwindow_height, Swindow_height, 0, 1, 0,
        doc: /* Return the number of lines in WINDOW.
 WINDOW defaults to the selected window.
 
-The return value includes WINDOW's mode line and header line, if any.  */)
-     (window)
-     Lisp_Object window;
+The return value includes WINDOW's mode line and header line, if any.
+
+Note: The function does not take into account the value of `line-spacing'
+when calculating the number of lines in WINDOW.  */)
+  (Lisp_Object window)
 {
   return decode_any_window (window)->total_lines;
 }
@@ -532,8 +518,7 @@ WINDOW defaults to the selected window.
 Note: The return value is the number of columns available for text in
 WINDOW.  If you want to find out how many columns WINDOW takes up, use
 (let ((edges (window-edges))) (- (nth 2 edges) (nth 0 edges))).  */)
-     (window)
-     Lisp_Object window;
+  (Lisp_Object window)
 {
   return make_number (window_box_text_cols (decode_any_window (window)));
 }
@@ -541,8 +526,7 @@ WINDOW.  If you want to find out how many columns WINDOW takes up, use
 DEFUN ("window-full-width-p", Fwindow_full_width_p, Swindow_full_width_p, 0, 1, 0,
        doc: /* Return t if WINDOW is as wide as its frame.
 WINDOW defaults to the selected window.  */)
-     (window)
-     Lisp_Object window;
+  (Lisp_Object window)
 {
   return WINDOW_FULL_WIDTH_P (decode_any_window (window)) ? Qt : Qnil;
 }
@@ -550,8 +534,7 @@ WINDOW defaults to the selected window.  */)
 DEFUN ("window-hscroll", Fwindow_hscroll, Swindow_hscroll, 0, 1, 0,
        doc: /* Return the number of columns by which WINDOW is scrolled from left margin.
 WINDOW defaults to the selected window.  */)
-     (window)
-     Lisp_Object window;
+  (Lisp_Object window)
 {
   return decode_window (window)->hscroll;
 }
@@ -562,8 +545,7 @@ Return NCOL.  NCOL should be zero or positive.
 
 Note that if `automatic-hscrolling' is non-nil, you cannot scroll the
 window so that the location of point moves off-window.  */)
-     (window, ncol)
-     Lisp_Object window, ncol;
+  (Lisp_Object window, Lisp_Object ncol)
 {
   struct window *w = decode_window (window);
   int hscroll;
@@ -584,8 +566,7 @@ DEFUN ("window-redisplay-end-trigger", Fwindow_redisplay_end_trigger,
        doc: /* Return WINDOW's redisplay end trigger value.
 WINDOW defaults to the selected window.
 See `set-window-redisplay-end-trigger' for more information.  */)
-     (window)
-     Lisp_Object window;
+  (Lisp_Object window)
 {
   return decode_window (window)->redisplay_end_trigger;
 }
@@ -598,8 +579,7 @@ If it is a buffer position, then if redisplay in WINDOW reaches a position
 beyond VALUE, the functions in `redisplay-end-trigger-functions' are called
 with two arguments: WINDOW, and the end trigger value.
 Afterwards the end-trigger value is reset to nil.  */)
-     (window, value)
-     register Lisp_Object window, value;
+  (register Lisp_Object window, Lisp_Object value)
 {
   register struct window *w;
 
@@ -619,8 +599,7 @@ BOTTOM is one more than the bottommost row occupied by WINDOW.
 The edges include the space used by WINDOW's scroll bar, display
 margins, fringes, header line, and/or mode line.  For the edges of
 just the text area, use `window-inside-edges'.  */)
-     (window)
-     Lisp_Object window;
+  (Lisp_Object window)
 {
   register struct window *w = decode_any_window (window);
 
@@ -641,8 +620,7 @@ BOTTOM is one more than the bottommost y position occupied by WINDOW.
 The pixel edges include the space used by WINDOW's scroll bar, display
 margins, fringes, header line, and/or mode line.  For the pixel edges
 of just the text area, use `window-inside-pixel-edges'.  */)
-     (window)
-     Lisp_Object window;
+  (Lisp_Object window)
 {
   register struct window *w = decode_any_window (window);
 
@@ -653,6 +631,52 @@ of just the text area, use `window-inside-pixel-edges'.  */)
                 Qnil))));
 }
 
+static void
+calc_absolute_offset(struct window *w, int *add_x, int *add_y)
+{
+  struct frame *f = XFRAME (w->frame);
+  *add_y = f->top_pos;
+#ifdef FRAME_MENUBAR_HEIGHT
+  *add_y += FRAME_MENUBAR_HEIGHT (f);
+#endif
+#ifdef FRAME_TOOLBAR_TOP_HEIGHT
+  *add_y += FRAME_TOOLBAR_TOP_HEIGHT (f);
+#elif FRAME_TOOLBAR_HEIGHT
+  *add_y += FRAME_TOOLBAR_HEIGHT (f);
+#endif
+#ifdef FRAME_NS_TITLEBAR_HEIGHT
+  *add_y += FRAME_NS_TITLEBAR_HEIGHT (f);
+#endif
+  *add_x = f->left_pos;
+#ifdef FRAME_TOOLBAR_LEFT_WIDTH
+  *add_x += FRAME_TOOLBAR_LEFT_WIDTH (f);
+#endif
+}
+
+DEFUN ("window-absolute-pixel-edges", Fwindow_absolute_pixel_edges,
+       Swindow_absolute_pixel_edges, 0, 1, 0,
+       doc: /* Return a list of the edge pixel coordinates of WINDOW.
+The list has the form (LEFT TOP RIGHT BOTTOM), all relative to 0, 0 at
+the top left corner of the display.
+
+RIGHT is one more than the rightmost x position occupied by WINDOW.
+BOTTOM is one more than the bottommost y position occupied by WINDOW.
+The pixel edges include the space used by WINDOW's scroll bar, display
+margins, fringes, header line, and/or mode line.  For the pixel edges
+of just the text area, use `window-inside-absolute-pixel-edges'.  */)
+  (Lisp_Object window)
+{
+  register struct window *w = decode_any_window (window);
+  int add_x, add_y;
+  calc_absolute_offset (w, &add_x, &add_y);
+
+  return Fcons (make_number (WINDOW_LEFT_EDGE_X (w) + add_x),
+         Fcons (make_number (WINDOW_TOP_EDGE_Y (w) + add_y),
+         Fcons (make_number (WINDOW_RIGHT_EDGE_X (w) + add_x),
+         Fcons (make_number (WINDOW_BOTTOM_EDGE_Y (w) + add_y),
+                Qnil))));
+}
+
 DEFUN ("window-inside-edges", Fwindow_inside_edges, Swindow_inside_edges, 0, 1, 0,
        doc: /* Return a list of the edge coordinates of WINDOW.
 The list has the form (LEFT TOP RIGHT BOTTOM).
@@ -663,8 +687,7 @@ RIGHT is one more than the rightmost column of WINDOW's text area.
 BOTTOM is one more than the bottommost row of WINDOW's text area.
 The inside edges do not include the space used by the WINDOW's scroll
 bar, display margins, fringes, header line, and/or mode line.  */)
-     (window)
-     Lisp_Object window;
+  (Lisp_Object window)
 {
   register struct window *w = decode_any_window (window);
 
@@ -689,8 +712,7 @@ RIGHT is one more than the rightmost x position of WINDOW's text area.
 BOTTOM is one more than the bottommost y position of WINDOW's text area.
 The inside edges do not include the space used by WINDOW's scroll bar,
 display margins, fringes, header line, and/or mode line.  */)
-     (window)
-     Lisp_Object window;
+  (Lisp_Object window)
 {
   register struct window *w = decode_any_window (window);
 
@@ -706,6 +728,35 @@ display margins, fringes, header line, and/or mode line.  */)
                              - WINDOW_MODE_LINE_HEIGHT (w)));
 }
 
+DEFUN ("window-inside-absolute-pixel-edges",
+       Fwindow_inside_absolute_pixel_edges,
+       Swindow_inside_absolute_pixel_edges, 0, 1, 0,
+       doc: /* Return a list of the edge pixel coordinates of WINDOW.
+The list has the form (LEFT TOP RIGHT BOTTOM), all relative to 0, 0 at
+the top left corner of the display.
+
+RIGHT is one more than the rightmost x position of WINDOW's text area.
+BOTTOM is one more than the bottommost y position of WINDOW's text area.
+The inside edges do not include the space used by WINDOW's scroll bar,
+display margins, fringes, header line, and/or mode line.  */)
+  (Lisp_Object window)
+{
+  register struct window *w = decode_any_window (window);
+  int add_x, add_y;
+  calc_absolute_offset (w, &add_x, &add_y);
+
+  return list4 (make_number (WINDOW_BOX_LEFT_EDGE_X (w)
+                             + WINDOW_LEFT_MARGIN_WIDTH (w)
+                             + WINDOW_LEFT_FRINGE_WIDTH (w) + add_x),
+                make_number (WINDOW_TOP_EDGE_Y (w)
+                             + WINDOW_HEADER_LINE_HEIGHT (w) + add_y),
+                make_number (WINDOW_BOX_RIGHT_EDGE_X (w)
+                             - WINDOW_RIGHT_MARGIN_WIDTH (w)
+                             - WINDOW_RIGHT_FRINGE_WIDTH (w) + add_x),
+                make_number (WINDOW_BOTTOM_EDGE_Y (w)
+                             - WINDOW_MODE_LINE_HEIGHT (w) + add_y));
+}
+
 /* Test if the character at column *X, row *Y is within window W.
    If it is not, return ON_NOTHING;
    if it is in the window's text area,
@@ -728,9 +779,7 @@ display margins, fringes, header line, and/or mode line.  */)
    X and Y are frame relative pixel coordinates.  */
 
 static enum window_part
-coordinates_in_window (w, x, y)
-     register struct window *w;
-     register int *x, *y;
+coordinates_in_window (register struct window *w, register int *x, register int *y)
 {
   struct frame *f = XFRAME (WINDOW_FRAME (w));
   int left_x, right_x, top_y, bottom_y;
@@ -935,8 +984,7 @@ If they are on the border between WINDOW and its right sibling,
   `vertical-line' is returned.
 If they are in the windows's left or right marginal areas, `left-margin'\n\
   or `right-margin' is returned.  */)
-     (coordinates, window)
-     register Lisp_Object coordinates, window;
+  (register Lisp_Object coordinates, Lisp_Object window)
 {
   struct window *w;
   struct frame *f;
@@ -1013,9 +1061,7 @@ struct check_window_data
 };
 
 static int
-check_window_containing (w, user_data)
-     struct window *w;
-     void *user_data;
+check_window_containing (struct window *w, void *user_data)
 {
   struct check_window_data *cw = (struct check_window_data *) user_data;
   enum window_part found;
@@ -1053,12 +1099,7 @@ check_window_containing (w, user_data)
    case.  */
 
 Lisp_Object
-window_from_coordinates (f, x, y, part, wx, wy, tool_bar_p)
-     struct frame *f;
-     int x, y;
-     enum window_part *part;
-     int *wx, *wy;
-     int tool_bar_p;
+window_from_coordinates (struct frame *f, int x, int y, enum window_part *part, int *wx, int *wy, int tool_bar_p)
 {
   Lisp_Object window;
   struct check_window_data cw;
@@ -1095,8 +1136,7 @@ DEFUN ("window-at", Fwindow_at, Swindow_at, 2, 3, 0,
 If omitted, FRAME defaults to the currently selected frame.
 The top left corner of the frame is considered to be row 0,
 column 0.  */)
-     (x, y, frame)
-     Lisp_Object x, y, frame;
+  (Lisp_Object x, Lisp_Object y, Lisp_Object frame)
 {
   struct frame *f;
 
@@ -1129,8 +1169,7 @@ is also currently selected, the value returned is the same as (point).
 It would be more strictly correct to return the `top-level' value
 of point, outside of any save-excursion forms.
 But that is hard to define.  */)
-     (window)
-     Lisp_Object window;
+  (Lisp_Object window)
 {
   register struct window *w = decode_window (window);
 
@@ -1144,8 +1183,7 @@ DEFUN ("window-start", Fwindow_start, Swindow_start, 0, 1, 0,
        doc: /* Return position at which display currently starts in WINDOW.
 WINDOW defaults to the selected window.
 This is updated by redisplay or by calling `set-window-start'.  */)
-     (window)
-     Lisp_Object window;
+  (Lisp_Object window)
 {
   return Fmarker_position (decode_window (window)->start);
 }
@@ -1171,8 +1209,7 @@ Return nil if there is no recorded value.  \(This can happen if the
 last redisplay of WINDOW was preempted, and did not finish.)
 If UPDATE is non-nil, compute the up-to-date position
 if it isn't already recorded.  */)
-     (window, update)
-     Lisp_Object window, update;
+  (Lisp_Object window, Lisp_Object update)
 {
   Lisp_Object value;
   struct window *w = decode_window (window);
@@ -1240,8 +1277,7 @@ if it isn't already recorded.  */)
 DEFUN ("set-window-point", Fset_window_point, Sset_window_point, 2, 2, 0,
        doc: /* Make point value in WINDOW be at position POS in WINDOW's buffer.
 Return POS.  */)
-     (window, pos)
-     Lisp_Object window, pos;
+  (Lisp_Object window, Lisp_Object pos)
 {
   register struct window *w = decode_window (window);
 
@@ -1265,8 +1301,7 @@ DEFUN ("set-window-start", Fset_window_start, Sset_window_start, 2, 3, 0,
 WINDOW defaults to the selected window.  Return POS.
 Optional third arg NOFORCE non-nil inhibits next redisplay from
 overriding motion of point in order to display at this exact start.  */)
-     (window, pos, noforce)
-     Lisp_Object window, pos, noforce;
+  (Lisp_Object window, Lisp_Object pos, Lisp_Object noforce)
 {
   register struct window *w = decode_window (window);
 
@@ -1304,8 +1339,7 @@ from displaying another buffer in it.  `get-lru-window' and
 Functions like `set-window-buffer' may change the buffer displayed by a
 window, unless that window is "strongly" dedicated to its buffer, that
 is the value returned by `window-dedicated-p' is t.  */)
-     (window)
-     Lisp_Object window;
+  (Lisp_Object window)
 {
   return decode_window (window)->dedicated;
 }
@@ -1329,8 +1363,7 @@ its buffer.  Functions like `set-window-buffer' may change the buffer
 displayed by a window, unless that window is strongly dedicated to its
 buffer.  If and when `set-window-buffer' displays another buffer in a
 window, it also makes sure that the window is not marked as dedicated.  */)
-     (window, flag)
-     Lisp_Object window, flag;
+  (Lisp_Object window, Lisp_Object flag)
 {
   register struct window *w = decode_window (window);
 
@@ -1344,8 +1377,7 @@ DEFUN ("window-parameters", Fwindow_parameters, Swindow_parameters,
        doc: /* Return the parameters of WINDOW and their values.
 WINDOW defaults to the selected window.  The return value is a list of
 elements of the form (PARAMETER . VALUE). */)
-     (window)
-     Lisp_Object window;
+  (Lisp_Object window)
 {
   return Fcopy_alist (decode_window (window)->window_parameters);
 }
@@ -1354,8 +1386,7 @@ DEFUN ("window-parameter", Fwindow_parameter, Swindow_parameter,
        2, 2, 0,
        doc:  /* Return WINDOW's value for PARAMETER.
 WINDOW defaults to the selected window.  */)
-     (window, parameter)
-     Lisp_Object window, parameter;
+  (Lisp_Object window, Lisp_Object parameter)
 {
   Lisp_Object result;
 
@@ -1367,8 +1398,7 @@ DEFUN ("set-window-parameter", Fset_window_parameter,
        Sset_window_parameter, 3, 3, 0,
        doc: /* Set WINDOW's value of PARAMETER to VALUE.
 WINDOW defaults to the selected window.  Return VALUE.  */)
-     (window, parameter, value)
-     Lisp_Object window, parameter, value;
+  (Lisp_Object window, Lisp_Object parameter, Lisp_Object value)
 {
   register struct window *w = decode_window (window);
   Lisp_Object old_alist_elt;
@@ -1386,8 +1416,7 @@ DEFUN ("window-display-table", Fwindow_display_table, Swindow_display_table,
        0, 1, 0,
        doc: /* Return the display-table that WINDOW is using.
 WINDOW defaults to the selected window.  */)
-     (window)
-     Lisp_Object window;
+  (Lisp_Object window)
 {
   return decode_window (window)->display_table;
 }
@@ -1398,8 +1427,7 @@ WINDOW defaults to the selected window.  */)
    return 0.  */
 
 struct Lisp_Char_Table *
-window_display_table (w)
-     struct window *w;
+window_display_table (struct window *w)
 {
   struct Lisp_Char_Table *dp = NULL;
 
@@ -1420,8 +1448,7 @@ window_display_table (w)
 
 DEFUN ("set-window-display-table", Fset_window_display_table, Sset_window_display_table, 2, 2, 0,
        doc: /* Set WINDOW's display-table to TABLE.  */)
-     (window, table)
-     register Lisp_Object window, table;
+  (register Lisp_Object window, Lisp_Object table)
 {
   register struct window *w;
 
@@ -1433,8 +1460,7 @@ DEFUN ("set-window-display-table", Fset_window_display_table, Sset_window_displa
 /* Record info on buffer window w is displaying
    when it is about to cease to display that buffer.  */
 static void
-unshow_buffer (w)
-     register struct window *w;
+unshow_buffer (register struct window *w)
 {
   Lisp_Object buf;
   struct buffer *b;
@@ -1482,8 +1508,7 @@ unshow_buffer (w)
 
 /* Put replacement into the window structure in place of old. */
 static void
-replace_window (old, replacement)
-     Lisp_Object old, replacement;
+replace_window (Lisp_Object old, Lisp_Object replacement)
 {
   register Lisp_Object tem;
   register struct window *o = XWINDOW (old), *p = XWINDOW (replacement);
@@ -1500,9 +1525,9 @@ replace_window (old, replacement)
   p->total_lines = o->total_lines;
   p->desired_matrix = p->current_matrix = 0;
   p->vscroll = 0;
-  bzero (&p->cursor, sizeof (p->cursor));
-  bzero (&p->last_cursor, sizeof (p->last_cursor));
-  bzero (&p->phys_cursor, sizeof (p->phys_cursor));
+  memset (&p->cursor, 0, sizeof (p->cursor));
+  memset (&p->last_cursor, 0, sizeof (p->last_cursor));
+  memset (&p->phys_cursor, 0, sizeof (p->phys_cursor));
   p->phys_cursor_type = -1;
   p->phys_cursor_width = -1;
   p->must_be_updated_p = 0;
@@ -1539,8 +1564,7 @@ DEFUN ("delete-window", Fdelete_window, Sdelete_window, 0, 1, "",
        doc: /* Remove WINDOW from its frame.
 WINDOW defaults to the selected window.  Return nil.
 Signal an error when WINDOW is the only window on its frame.  */)
-     (window)
-     register Lisp_Object window;
+  (register Lisp_Object window)
 {
   struct frame *f;
   if (NILP (window))
@@ -1557,8 +1581,7 @@ Signal an error when WINDOW is the only window on its frame.  */)
 }
 
 void
-delete_window (window)
-     register Lisp_Object window;
+delete_window (register Lisp_Object window)
 {
   register Lisp_Object tem, parent, sib;
   register struct window *p;
@@ -1772,9 +1795,7 @@ delete_window (window)
    function window_list.  */
 
 static int
-add_window_to_list (w, user_data)
-     struct window *w;
-     void *user_data;
+add_window_to_list (struct window *w, void *user_data)
 {
   Lisp_Object *list = (Lisp_Object *) user_data;
   Lisp_Object window;
@@ -1789,7 +1810,7 @@ add_window_to_list (w, user_data)
    list, cache it in Vwindow_list, and return that.  */
 
 static Lisp_Object
-window_list ()
+window_list (void)
 {
   if (!CONSP (Vwindow_list))
     {
@@ -1830,8 +1851,7 @@ window_list ()
                 a frame means consider windows on that frame, only.  */
 
 static int
-candidate_window_p (window, owindow, minibuf, all_frames)
-     Lisp_Object window, owindow, minibuf, all_frames;
+candidate_window_p (Lisp_Object window, Lisp_Object owindow, Lisp_Object minibuf, Lisp_Object all_frames)
 {
   struct window *w = XWINDOW (window);
   struct frame *f = XFRAME (w->frame);
@@ -1896,8 +1916,7 @@ candidate_window_p (window, owindow, minibuf, all_frames)
    ALL_FRAMES.  */
 
 static void
-decode_next_window_args (window, minibuf, all_frames)
-     Lisp_Object *window, *minibuf, *all_frames;
+decode_next_window_args (Lisp_Object *window, Lisp_Object *minibuf, Lisp_Object *all_frames)
 {
   if (NILP (*window))
     *window = selected_window;
@@ -1943,9 +1962,7 @@ decode_next_window_args (window, minibuf, all_frames)
    ALL_FRAMES.  */
 
 static Lisp_Object
-next_window (window, minibuf, all_frames, next_p)
-     Lisp_Object window, minibuf, all_frames;
-     int next_p;
+next_window (Lisp_Object window, Lisp_Object minibuf, Lisp_Object all_frames, int next_p)
 {
   decode_next_window_args (&window, &minibuf, &all_frames);
 
@@ -2044,8 +2061,7 @@ If you use consistent values for MINIBUF and ALL-FRAMES, you can use
 `next-window' to iterate through the entire cycle of acceptable
 windows, eventually ending up back at the window you started with.
 `previous-window' traverses the same cycle, in the reverse order.  */)
-     (window, minibuf, all_frames)
-     Lisp_Object window, minibuf, all_frames;
+  (Lisp_Object window, Lisp_Object minibuf, Lisp_Object all_frames)
 {
   return next_window (window, minibuf, all_frames, 1);
 }
@@ -2062,8 +2078,7 @@ use `previous-window' to iterate through the entire cycle of
 acceptable windows, eventually ending up back at the window you
 started with.  `next-window' traverses the same cycle, in the
 reverse order.  */)
-     (window, minibuf, all_frames)
-     Lisp_Object window, minibuf, all_frames;
+  (Lisp_Object window, Lisp_Object minibuf, Lisp_Object all_frames)
 {
   return next_window (window, minibuf, all_frames, 0);
 }
@@ -2082,8 +2097,7 @@ This function uses `next-window' for finding the window to select.
 The argument ALL-FRAMES has the same meaning as in `next-window',
 but the MINIBUF argument of `next-window' is always effectively
 nil.  */)
-     (count, all_frames)
-     Lisp_Object count, all_frames;
+  (Lisp_Object count, Lisp_Object all_frames)
 {
   Lisp_Object window;
   int i;
@@ -2109,8 +2123,7 @@ MINIBUF t means include the minibuffer window, even if it isn't active.
 MINIBUF nil or omitted means include the minibuffer window only
 if it's active.
 MINIBUF neither nil nor t means never include the minibuffer window.  */)
-     (frame, minibuf, window)
-     Lisp_Object frame, minibuf, window;
+  (Lisp_Object frame, Lisp_Object minibuf, Lisp_Object window)
 {
   if (NILP (window))
     window = FRAMEP (frame) ? XFRAME (frame)->selected_window : selected_window;
@@ -2129,8 +2142,7 @@ MINIBUF neither nil nor t means never include the minibuffer window.  */)
    for `next-window'.  */
 
 static Lisp_Object
-window_list_1 (window, minibuf, all_frames)
-     Lisp_Object window, minibuf, all_frames;
+window_list_1 (Lisp_Object window, Lisp_Object minibuf, Lisp_Object all_frames)
 {
   Lisp_Object tail, list, rest;
 
@@ -2178,10 +2190,7 @@ enum window_loop
 };
 
 static Lisp_Object
-window_loop (type, obj, mini, frames)
-     enum window_loop type;
-     Lisp_Object obj, frames;
-     int mini;
+window_loop (enum window_loop type, Lisp_Object obj, int mini, Lisp_Object frames)
 {
   Lisp_Object window, windows, best_window, frame_arg;
   struct frame *f;
@@ -2408,7 +2417,7 @@ window_loop (type, obj, mini, frames)
 /* Used for debugging.  Abort if any window has a dead buffer.  */
 
 void
-check_all_windows ()
+check_all_windows (void)
 {
   window_loop (CHECK_ALL_WINDOWS, Qnil, 1, Qt);
 }
@@ -2426,8 +2435,7 @@ If FRAME is 0, search all visible and iconified frames.
 If FRAME is t, search all frames.
 If FRAME is nil, search only the selected frame.
 If FRAME is a frame, search only that frame.  */)
-  (frame, dedicated)
-     Lisp_Object frame, dedicated;
+  (Lisp_Object frame, Lisp_Object dedicated)
 {
   register Lisp_Object w;
   /* First try for a window that is full-width */
@@ -2452,8 +2460,7 @@ If FRAME is 0, search all visible and iconified frames.
 If FRAME is t, search all frames.
 If FRAME is nil, search only the selected frame.
 If FRAME is a frame, search only that frame.  */)
-    (frame, dedicated)
-     Lisp_Object frame, dedicated;
+  (Lisp_Object frame, Lisp_Object dedicated)
 {
   return window_loop (GET_LARGEST_WINDOW, dedicated, 0,
                       frame);
@@ -2468,8 +2475,7 @@ If optional argument FRAME is 0, search all visible and iconified frames.
 If FRAME is t, search all frames.
 If FRAME is nil, search only the selected frame.
 If FRAME is a frame, search only that frame.  */)
-     (buffer_or_name, frame)
-     Lisp_Object buffer_or_name, frame;
+  (Lisp_Object buffer_or_name, Lisp_Object frame)
 {
   Lisp_Object buffer;
 
@@ -2493,8 +2499,7 @@ previously visible in WINDOW in the same place on the frame.  Doing this
 depends on the value of (window-start WINDOW), so if calling this
 function in a program gives strange scrolling, make sure the
 window-start value is reasonable when this function is called.  */)
-     (window)
-     Lisp_Object window;
+  (Lisp_Object window)
 {
   struct window *w;
   int startpos;
@@ -2561,8 +2566,7 @@ If FRAME is t, search only the selected frame.
 If FRAME is a frame, search only that frame.
 When a window showing BUFFER-OR-NAME is dedicated and the only window of
 its frame, that frame is deleted when there are other frames left.  */)
-     (buffer_or_name, frame)
-     Lisp_Object buffer_or_name, frame;
+  (Lisp_Object buffer_or_name, Lisp_Object frame)
 {
   Lisp_Object buffer;
 
@@ -2597,8 +2601,7 @@ When a window showing BUFFER-OR-NAME is dedicated that window is
 deleted.  If that window is the only window on its frame, that frame is
 deleted too when there are other frames left.  If there are no other
 frames left, some other buffer is displayed in that window.  */)
-     (buffer_or_name)
-     Lisp_Object buffer_or_name;
+  (Lisp_Object buffer_or_name)
 {
   Lisp_Object buffer;
 
@@ -2619,8 +2622,7 @@ frames left, some other buffer is displayed in that window.  */)
    of all frames, even those on other keyboards.  */
 
 void
-replace_buffer_in_all_windows (buffer)
-     Lisp_Object buffer;
+replace_buffer_in_all_windows (Lisp_Object buffer)
 {
   Lisp_Object tail, frame;
 
@@ -2649,9 +2651,7 @@ replace_buffer_in_all_windows (buffer)
    minimum allowable size.  */
 
 void
-check_frame_size (frame, rows, cols)
-     FRAME_PTR frame;
-     int *rows, *cols;
+check_frame_size (FRAME_PTR frame, int *rows, int *cols)
 {
   /* For height, we have to see:
      how many windows the frame has at minimum (one or two),
@@ -2677,9 +2677,7 @@ check_frame_size (frame, rows, cols)
    either.  */
 
 static int
-window_fixed_size_p (w, width_p, check_siblings_p)
-     struct window *w;
-     int width_p, check_siblings_p;
+window_fixed_size_p (struct window *w, int width_p, int check_siblings_p)
 {
   int fixed_p;
   struct window *c;
@@ -2779,9 +2777,7 @@ window_fixed_size_p (w, width_p, check_siblings_p)
    minibuffer window, always return 1.  */
 
 static int
-window_min_size_2 (w, width_p, safe_p)
-     struct window *w;
-     int width_p, safe_p;
+window_min_size_2 (struct window *w, int width_p, int safe_p)
 {
   /* We should consider buffer-local values of window_min_height and
      window_min_width here.  */
@@ -2815,9 +2811,7 @@ window_min_size_2 (w, width_p, safe_p)
    sizes of W's children.  */
 
 static int
-window_min_size_1 (w, width_p, safe_p)
-     struct window *w;
-     int width_p, safe_p;
+window_min_size_1 (struct window *w, int width_p, int safe_p)
 {
   struct window *c;
   int size;
@@ -2892,9 +2886,7 @@ window_min_size_1 (w, width_p, safe_p)
    to 1 if W is fixed-size unless FIXED is null.  */
 
 static int
-window_min_size (w, width_p, safe_p, ignore_fixed_p, fixed)
-     struct window *w;
-     int width_p, safe_p, ignore_fixed_p, *fixed;
+window_min_size (struct window *w, int width_p, int safe_p, int ignore_fixed_p, int *fixed)
 {
   int size, fixed_p;
 
@@ -2920,8 +2912,7 @@ window_min_size (w, width_p, safe_p, ignore_fixed_p, fixed)
    is still too narrow.  */
 
 static int
-adjust_window_margins (w)
-     struct window *w;
+adjust_window_margins (struct window *w)
 {
   int box_cols = (WINDOW_TOTAL_COLS (w)
                   - WINDOW_FRINGE_COLS (w)
@@ -2975,11 +2966,8 @@ adjust_window_margins (w)
    a specific window, it will attempt to strictly resize that window
    proportionally, even at the expense of deleting smaller windows.  */
 static int *
-shrink_windows (total, size, nchildren, shrinkable, resize_fixed_p,
-                forward, width_p, safe_p)
-     int total, size, nchildren, shrinkable;
-     int resize_fixed_p, width_p, safe_p;
-     Lisp_Object forward;
+shrink_windows (int total, int size, int nchildren, int shrinkable,
+                int resize_fixed_p, Lisp_Object forward, int width_p, int safe_p)
 {
   int available_resize = 0;
   int *new_sizes, *min_sizes;
@@ -3119,10 +3107,7 @@ shrink_windows (total, size, nchildren, shrinkable, resize_fixed_p,
    This should give better behavior when resizing frames.  */
 
 static void
-size_window (window, size, width_p, nodelete_p, first_only, last_only)
-     Lisp_Object window;
-     int size, width_p, nodelete_p;
-     int first_only, last_only;
+size_window (Lisp_Object window, int size, int width_p, int nodelete_p, int first_only, int last_only)
 {
   struct window *w = XWINDOW (window);
   struct window *c;
@@ -3313,10 +3298,7 @@ size_window (window, size, width_p, nodelete_p, first_only, last_only)
    displayed correctly.  */
 
 void
-set_window_height (window, height, nodelete)
-     Lisp_Object window;
-     int height;
-     int nodelete;
+set_window_height (Lisp_Object window, int height, int nodelete)
 {
   size_window (window, height, 0, nodelete, 0, 0);
 }
@@ -3330,10 +3312,7 @@ set_window_height (window, height, nodelete)
    displayed correctly.  */
 
 void
-set_window_width (window, width, nodelete)
-     Lisp_Object window;
-     int width;
-     int nodelete;
+set_window_width (Lisp_Object window, int width, int nodelete)
 {
   size_window (window, width, 1, nodelete, 0, 0);
 }
@@ -3341,9 +3320,7 @@ set_window_width (window, width, nodelete)
 /* Change window heights in windows rooted in WINDOW by N lines.  */
 
 void
-change_window_heights (window, n)
-     Lisp_Object window;
-     int n;
+change_window_heights (Lisp_Object window, int n)
 {
   struct window *w = XWINDOW (window);
 
@@ -3439,9 +3416,7 @@ run_window_configuration_change_hook (struct frame *f)
    reset from the buffer's local settings.  */
 
 void
-set_window_buffer (window, buffer, run_hooks_p, keep_margins_p)
-     Lisp_Object window, buffer;
-     int run_hooks_p, keep_margins_p;
+set_window_buffer (Lisp_Object window, Lisp_Object buffer, int run_hooks_p, int keep_margins_p)
 {
   struct window *w = XWINDOW (window);
   struct buffer *b = XBUFFER (buffer);
@@ -3463,7 +3438,7 @@ set_window_buffer (window, buffer, run_hooks_p, keep_margins_p)
 
   XSETFASTINT (w->window_end_pos, 0);
   XSETFASTINT (w->window_end_vpos, 0);
-  bzero (&w->last_cursor, sizeof w->last_cursor);
+  memset (&w->last_cursor, 0, sizeof w->last_cursor);
   w->window_end_valid = Qnil;
   if (!(keep_margins_p && samebuf))
     { /* If we're not actually changing the buffer, don't reset hscroll and
@@ -3552,8 +3527,7 @@ already display BUFFER-OR-NAME.
 
 This function runs `window-scroll-functions' before running
 `window-configuration-change-hook'.  */)
-     (window, buffer_or_name, keep_margins)
-     register Lisp_Object window, buffer_or_name, keep_margins;
+  (register Lisp_Object window, Lisp_Object buffer_or_name, Lisp_Object keep_margins)
 {
   register Lisp_Object tem, buffer;
   register struct window *w = decode_window (window);
@@ -3596,8 +3570,7 @@ make this window the most recently selected one.
 
 Note that the main editor command loop selects the buffer of the
 selected window before each command.  */)
-     (window, norecord)
-     register Lisp_Object window, norecord;
+  (register Lisp_Object window, Lisp_Object norecord)
 {
   register struct window *w;
   register struct window *ow;
@@ -3673,24 +3646,21 @@ selected window before each command.  */)
 }
 
 static Lisp_Object
-select_window_norecord (window)
-     Lisp_Object window;
+select_window_norecord (Lisp_Object window)
 {
   return WINDOW_LIVE_P (window)
     ? Fselect_window (window, Qt) : selected_window;
 }
 
 static Lisp_Object
-select_frame_norecord (frame)
-     Lisp_Object frame;
+select_frame_norecord (Lisp_Object frame)
 {
   return FRAME_LIVE_P (XFRAME (frame))
     ? Fselect_frame (frame, Qt) : selected_frame;
 }
 
 Lisp_Object
-display_buffer (buffer, not_this_window_p, override_frame)
-     Lisp_Object buffer, not_this_window_p, override_frame;
+display_buffer (Lisp_Object buffer, Lisp_Object not_this_window_p, Lisp_Object override_frame)
 {
   return call3 (Qdisplay_buffer, buffer, not_this_window_p, override_frame);
 }
@@ -3701,8 +3671,7 @@ DEFUN ("force-window-update", Fforce_window_update, Sforce_window_update,
 If optional arg OBJECT is a window, force redisplay of that window only.
 If OBJECT is a buffer or buffer name, force redisplay of all windows
 displaying that buffer.  */)
-     (object)
-     Lisp_Object object;
+  (Lisp_Object object)
 {
   if (NILP (object))
     {
@@ -3741,8 +3710,7 @@ displaying that buffer.  */)
 
 
 void
-temp_output_buffer_show (buf)
-     register Lisp_Object buf;
+temp_output_buffer_show (register Lisp_Object buf)
 {
   register struct buffer *old = current_buffer;
   register Lisp_Object window;
@@ -3802,8 +3770,7 @@ temp_output_buffer_show (buf)
 }
 
 static void
-make_dummy_parent (window)
-     Lisp_Object window;
+make_dummy_parent (Lisp_Object window)
 {
   Lisp_Object new;
   register struct window *o, *p;
@@ -3845,8 +3812,7 @@ The upper or leftmost window is the original one, and remains selected
 if it was selected before.
 
 See Info node `(elisp)Splitting Windows' for more details and examples.  */)
-     (window, size, horizontal)
-     Lisp_Object window, size, horizontal;
+  (Lisp_Object window, Lisp_Object size, Lisp_Object horizontal)
 {
   register Lisp_Object new;
   register struct window *o, *p;
@@ -3936,7 +3902,7 @@ See Info node `(elisp)Splitting Windows' for more details and examples.  */)
   p->parent = o->parent;
   p->buffer = Qt;
   p->window_end_valid = Qnil;
-  bzero (&p->last_cursor, sizeof p->last_cursor);
+  memset (&p->last_cursor, 0, sizeof p->last_cursor);
 
   /* Duplicate special geometry settings.  */
 
@@ -3985,8 +3951,7 @@ window wider by SIZE columns.  If SIZE is negative, shrink the window by
 
 This function can delete windows if they get too small.  The size of
 fixed size windows is not altered by this function.  */)
-     (size, horizontal)
-     Lisp_Object size, horizontal;
+  (Lisp_Object size, Lisp_Object horizontal)
 {
   CHECK_NUMBER (size);
   enlarge_window (selected_window, XINT (size), !NILP (horizontal));
@@ -4005,8 +3970,7 @@ window by -SIZE lines or columns.  Return nil.
 
 This function can delete windows if they get too small.  The size of
 fixed size windows is not altered by this function. */)
-     (size, horizontal)
-     Lisp_Object size, horizontal;
+  (Lisp_Object size, Lisp_Object horizontal)
 {
   CHECK_NUMBER (size);
   enlarge_window (selected_window, -XINT (size), !NILP (horizontal));
@@ -4017,16 +3981,14 @@ fixed size windows is not altered by this function. */)
 }
 
 int
-window_height (window)
-     Lisp_Object window;
+window_height (Lisp_Object window)
 {
   register struct window *p = XWINDOW (window);
   return WINDOW_TOTAL_LINES (p);
 }
 
 int
-window_width (window)
-     Lisp_Object window;
+window_width (Lisp_Object window)
 {
   register struct window *p = XWINDOW (window);
   return WINDOW_TOTAL_COLS (p);
@@ -4048,17 +4010,15 @@ window_width (window)
    deleted.  */
 
 static void
-enlarge_window (window, delta, horiz_flag)
-     Lisp_Object window;
-     int delta, horiz_flag;
+enlarge_window (Lisp_Object window, int delta, int horiz_flag)
 {
   Lisp_Object parent, next, prev;
   struct window *p;
   Lisp_Object *sizep;
   int maximum;
-  int (*sizefun) P_ ((Lisp_Object))
+  int (*sizefun) (Lisp_Object)
     = horiz_flag ? window_width : window_height;
-  void (*setsizefun) P_ ((Lisp_Object, int, int))
+  void (*setsizefun) (Lisp_Object, int, int)
     = (horiz_flag ? set_window_width : set_window_height);
 
   /* Give up if this window cannot be resized.  */
@@ -4326,9 +4286,7 @@ enlarge_window (window, delta, horiz_flag)
    are not deleted; instead, we signal an error.  */
 
 static void
-adjust_window_trailing_edge (window, delta, horiz_flag)
-     Lisp_Object window;
-     int delta, horiz_flag;
+adjust_window_trailing_edge (Lisp_Object window, int delta, int horiz_flag)
 {
   Lisp_Object parent, child;
   struct window *p;
@@ -4464,8 +4422,7 @@ Otherwise, adjust the height, moving the bottom edge.
 Following siblings of the selected window are resized to fulfill
 the size request.  If they become too small in the process, they
 are not deleted; instead, we signal an error.  */)
-  (window, delta, horizontal)
-  Lisp_Object window, delta, horizontal;
+  (Lisp_Object window, Lisp_Object delta, Lisp_Object horizontal)
 {
   CHECK_NUMBER (delta);
   if (NILP (window))
@@ -4484,7 +4441,7 @@ are not deleted; instead, we signal an error.  */)
                         Resizing Mini-Windows
  ***********************************************************************/
 
-static void shrink_window_lowest_first P_ ((struct window *, int));
+static void shrink_window_lowest_first (struct window *, int);
 
 enum save_restore_action
 {
@@ -4493,16 +4450,14 @@ enum save_restore_action
     RESTORE_ORIG_SIZES
 };
 
-static int save_restore_orig_size P_ ((struct window *,
-                                       enum save_restore_action));
+static int save_restore_orig_size (struct window *,
+                                   enum save_restore_action);
 
 /* Shrink windows rooted in window W to HEIGHT.  Take the space needed
    from lowest windows first.  */
 
 static void
-shrink_window_lowest_first (w, height)
-     struct window *w;
-     int height;
+shrink_window_lowest_first (struct window *w, int height)
 {
   struct window *c;
   Lisp_Object child;
@@ -4584,9 +4539,7 @@ shrink_window_lowest_first (w, height)
    stored in orig_top_line and orig_total_lines for all windows.  */
 
 static int
-save_restore_orig_size (w, action)
-     struct window *w;
-     enum save_restore_action action;
+save_restore_orig_size (struct window *w, enum save_restore_action action)
 {
   int success_p = 1;
 
@@ -4641,9 +4594,7 @@ save_restore_orig_size (w, action)
    without deleting other windows.  */
 
 void
-grow_mini_window (w, delta)
-     struct window *w;
-     int delta;
+grow_mini_window (struct window *w, int delta)
 {
   struct frame *f = XFRAME (w->frame);
   struct window *root;
@@ -4692,8 +4643,7 @@ grow_mini_window (w, delta)
    line.  */
 
 void
-shrink_mini_window (w)
-     struct window *w;
+shrink_mini_window (struct window *w)
 {
   struct frame *f = XFRAME (w->frame);
   struct window *root = XWINDOW (FRAME_ROOT_WINDOW (f));
@@ -4723,8 +4673,7 @@ shrink_mini_window (w)
    the frame are cleared.  */
 
 void
-mark_window_cursors_off (w)
-     struct window *w;
+mark_window_cursors_off (struct window *w)
 {
   while (w)
     {
@@ -4743,8 +4692,7 @@ mark_window_cursors_off (w)
 /* Return number of lines of text (not counting mode lines) in W.  */
 
 int
-window_internal_height (w)
-     struct window *w;
+window_internal_height (struct window *w)
 {
   int ht = XFASTINT (w->total_lines);
 
@@ -4771,8 +4719,7 @@ window_internal_height (w)
    separating W from the sibling to its right.  */
 
 int
-window_box_text_cols (w)
-     struct window *w;
+window_box_text_cols (struct window *w)
 {
   struct frame *f = XFRAME (WINDOW_FRAME (w));
   int width = XINT (w->total_cols);
@@ -4809,11 +4756,7 @@ window_box_text_cols (w)
    respectively.  */
 
 static void
-window_scroll (window, n, whole, noerror)
-     Lisp_Object window;
-     int n;
-     int whole;
-     int noerror;
+window_scroll (Lisp_Object window, int n, int whole, int noerror)
 {
   immediate_quit = 1;
 
@@ -4833,11 +4776,7 @@ window_scroll (window, n, whole, noerror)
    descriptions.  */
 
 static void
-window_scroll_pixel_based (window, n, whole, noerror)
-     Lisp_Object window;
-     int n;
-     int whole;
-     int noerror;
+window_scroll_pixel_based (Lisp_Object window, int n, int whole, int noerror)
 {
   struct it it;
   struct window *w = XWINDOW (window);
@@ -5183,11 +5122,7 @@ window_scroll_pixel_based (window, n, whole, noerror)
    See the comment of window_scroll for parameter descriptions.  */
 
 static void
-window_scroll_line_based (window, n, whole, noerror)
-     Lisp_Object window;
-     int n;
-     int whole;
-     int noerror;
+window_scroll_line_based (Lisp_Object window, int n, int whole, int noerror)
 {
   register struct window *w = XWINDOW (window);
   register int opoint = PT, opoint_byte = PT_BYTE;
@@ -5345,9 +5280,7 @@ window_scroll_line_based (window, n, whole, noerror)
    up.  This is the guts of Fscroll_up and Fscroll_down.  */
 
 static void
-scroll_command (n, direction)
-     Lisp_Object n;
-     int direction;
+scroll_command (Lisp_Object n, int direction)
 {
   int count = SPECPDL_INDEX ();
 
@@ -5384,8 +5317,7 @@ A near full screen is `next-screen-context-lines' less than a full screen.
 Negative ARG means scroll downward.
 If ARG is the atom `-', scroll downward by nearly full screen.
 When calling from a program, supply as argument a number, nil, or `-'.  */)
-     (arg)
-     Lisp_Object arg;
+  (Lisp_Object arg)
 {
   scroll_command (arg, 1);
   return Qnil;
@@ -5398,8 +5330,7 @@ A near full screen is `next-screen-context-lines' less than a full screen.
 Negative ARG means scroll upward.
 If ARG is the atom `-', scroll upward by nearly full screen.
 When calling from a program, supply as argument a number, nil, or `-'.  */)
-     (arg)
-     Lisp_Object arg;
+  (Lisp_Object arg)
 {
   scroll_command (arg, -1);
   return Qnil;
@@ -5412,7 +5343,7 @@ showing that buffer is used.
 If in the minibuffer, `minibuffer-scroll-window' if non-nil
 specifies the window.  This takes precedence over
 `other-window-scroll-buffer'.  */)
-     ()
+  (void)
 {
   Lisp_Object window;
 
@@ -5462,8 +5393,7 @@ showing that buffer, popping the buffer up if necessary.
 If in the minibuffer, `minibuffer-scroll-window' if non-nil
 specifies the window to scroll.  This takes precedence over
 `other-window-scroll-buffer'.  */)
-     (arg)
-     Lisp_Object arg;
+  (Lisp_Object arg)
 {
   Lisp_Object window;
   struct window *w;
@@ -5506,8 +5436,7 @@ If SET-MINIMUM is non-nil, the new scroll amount becomes the
 lower bound for automatic scrolling, i.e. automatic scrolling
 will not scroll a window to a column less than the value returned
 by this function.  This happens in an interactive call.  */)
-     (arg, set_minimum)
-     register Lisp_Object arg, set_minimum;
+  (register Lisp_Object arg, Lisp_Object set_minimum)
 {
   Lisp_Object result;
   int hscroll;
@@ -5536,8 +5465,7 @@ If SET-MINIMUM is non-nil, the new scroll amount becomes the
 lower bound for automatic scrolling, i.e. automatic scrolling
 will not scroll a window to a column less than the value returned
 by this function.  This happens in an interactive call.  */)
-     (arg, set_minimum)
-     register Lisp_Object arg, set_minimum;
+  (register Lisp_Object arg, Lisp_Object set_minimum)
 {
   Lisp_Object result;
   int hscroll;
@@ -5560,7 +5488,7 @@ by this function.  This happens in an interactive call.  */)
 DEFUN ("minibuffer-selected-window", Fminibuffer_selected_window, Sminibuffer_selected_window, 0, 0, 0,
        doc: /* Return the window which was selected when entering the minibuffer.
 Returns nil, if selected window is not a minibuffer window.  */)
-     ()
+  (void)
 {
   if (minibuf_level > 0
       && MINI_WINDOW_P (XWINDOW (selected_window))
@@ -5574,8 +5502,7 @@ Returns nil, if selected window is not a minibuffer window.  */)
    as opposed to its height.  */
 
 static int
-displayed_window_lines (w)
-     struct window *w;
+displayed_window_lines (struct window *w)
 {
   struct it it;
   struct text_pos start;
@@ -5643,8 +5570,7 @@ then only tty frame are redrawn.
 
 Just C-u as prefix means put point in the center of the window
 and redisplay normally--don't erase and redraw the frame.  */)
-     (arg)
-     register Lisp_Object arg;
+  (register Lisp_Object arg)
 {
   struct window *w = XWINDOW (selected_window);
   struct buffer *buf = XBUFFER (w->buffer);
@@ -5828,8 +5754,7 @@ WINDOW defaults to the selected window.
 
 The return value does not include the mode line, any header line, nor
 any partial-height lines in the text display area.  */)
-     (window)
-     Lisp_Object window;
+  (Lisp_Object window)
 {
   struct window *w = decode_window (window);
   int pixel_height = window_box_height (w);
@@ -5845,8 +5770,7 @@ DEFUN ("move-to-window-line", Fmove_to_window_line, Smove_to_window_line,
 With no argument, position point at center of window.
 An argument specifies vertical position within the window;
 zero means top of window, negative means relative to bottom of window.  */)
-     (arg)
-     Lisp_Object arg;
+  (Lisp_Object arg)
 {
   struct window *w = XWINDOW (selected_window);
   int lines, start;
@@ -5959,16 +5883,14 @@ struct saved_window
 
 DEFUN ("window-configuration-p", Fwindow_configuration_p, Swindow_configuration_p, 1, 1, 0,
        doc: /* Return t if OBJECT is a window-configuration object.  */)
-     (object)
-     Lisp_Object object;
+  (Lisp_Object object)
 {
   return WINDOW_CONFIGURATIONP (object) ? Qt : Qnil;
 }
 
 DEFUN ("window-configuration-frame", Fwindow_configuration_frame, Swindow_configuration_frame, 1, 1, 0,
        doc: /* Return the frame that CONFIG, a window-configuration object, is about.  */)
-     (config)
-     Lisp_Object config;
+  (Lisp_Object config)
 {
   register struct save_window_data *data;
   struct Lisp_Vector *saved_windows;
@@ -5988,8 +5910,7 @@ by `current-window-configuration' (which see).
 If CONFIGURATION was made from a frame that is now deleted,
 only frame-independent values can be restored.  In this case,
 the return value is nil.  Otherwise the value is t.  */)
-     (configuration)
-     Lisp_Object configuration;
+  (Lisp_Object configuration)
 {
   register struct save_window_data *data;
   struct Lisp_Vector *saved_windows;
@@ -6320,8 +6241,7 @@ the return value is nil.  Otherwise the value is t.  */)
    by setting their buffers to nil.  */
 
 void
-delete_all_subwindows (w)
-     register struct window *w;
+delete_all_subwindows (register struct window *w)
 {
   if (!NILP (w->next))
     delete_all_subwindows (XWINDOW (w->next));
@@ -6347,8 +6267,7 @@ delete_all_subwindows (w)
 }
 
 static int
-count_windows (window)
-     register struct window *window;
+count_windows (register struct window *window)
 {
   register int count = 1;
   if (!NILP (window->next))
@@ -6365,10 +6284,7 @@ count_windows (window)
    Value is last index + 1.  */
 
 static int
-get_leaf_windows (w, flat, i)
-     struct window *w;
-     struct window **flat;
-     int i;
+get_leaf_windows (struct window *w, struct window **flat, int i)
 {
   while (w)
     {
@@ -6391,8 +6307,7 @@ get_leaf_windows (w, flat, i)
    can be returned.  */
 
 struct glyph *
-get_phys_cursor_glyph (w)
-     struct window *w;
+get_phys_cursor_glyph (struct window *w)
 {
   struct glyph_row *row;
   struct glyph *glyph;
@@ -6411,10 +6326,7 @@ get_phys_cursor_glyph (w)
 
 
 static int
-save_window_save (window, vector, i)
-     Lisp_Object window;
-     struct Lisp_Vector *vector;
-     int i;
+save_window_save (Lisp_Object window, struct Lisp_Vector *vector, int i)
 {
   register struct saved_window *p;
   register struct window *w;
@@ -6504,8 +6416,7 @@ point and mark.  An exception is made for point in the current buffer:
 its value is -not- saved.
 This also records the currently selected frame, and FRAME's focus
 redirection (see `redirect-frame-focus').  */)
-     (frame)
-     Lisp_Object frame;
+  (Lisp_Object frame)
 {
   register Lisp_Object tem;
   register int n_windows;
@@ -6553,8 +6464,7 @@ Also restore the choice of selected window.
 Also restore which buffer is current.
 Does not restore the value of point in current buffer.
 usage: (save-window-excursion BODY...)  */)
-     (args)
-     Lisp_Object args;
+  (Lisp_Object args)
 {
   register Lisp_Object val;
   register int count = SPECPDL_INDEX ();
@@ -6572,8 +6482,7 @@ usage: (save-window-excursion BODY...)  */)
  ***********************************************************************/
 
 static Lisp_Object
-window_tree (w)
-     struct window *w;
+window_tree (struct window *w)
 {
   Lisp_Object tail = Qnil;
   Lisp_Object result = Qnil;
@@ -6626,8 +6535,7 @@ EDGES is a list \(LEFT TOP RIGHT BOTTOM) as returned by `window-edges'.
 
 If FRAME is nil or omitted, return information on the currently
 selected frame.  */)
-     (frame)
-     Lisp_Object frame;
+  (Lisp_Object frame)
 {
   FRAME_PTR f;
 
@@ -6656,8 +6564,7 @@ Second arg LEFT-WIDTH specifies the number of character cells to
 reserve for the left marginal area.  Optional third arg RIGHT-WIDTH
 does the same for the right marginal area.  A nil width parameter
 means no margin.  */)
-     (window, left_width, right_width)
-     Lisp_Object window, left_width, right_width;
+  (Lisp_Object window, Lisp_Object left_width, Lisp_Object right_width)
 {
   struct window *w = decode_window (window);
 
@@ -6701,8 +6608,7 @@ If WINDOW is omitted or nil, use the currently selected window.
 Value is a cons of the form (LEFT-WIDTH . RIGHT-WIDTH).
 If a marginal area does not exist, its width will be returned
 as nil.  */)
-     (window)
-     Lisp_Object window;
+  (Lisp_Object window)
 {
   struct window *w = decode_window (window);
   return Fcons (w->left_margin_cols, w->right_margin_cols);
@@ -6727,8 +6633,7 @@ the command `set-fringe-style'.
 If optional fourth arg OUTSIDE-MARGINS is non-nil, draw the fringes
 outside of the display margins.  By default, fringes are drawn between
 display marginal areas and the text area.  */)
-     (window, left_width, right_width, outside_margins)
-     Lisp_Object window, left_width, right_width, outside_margins;
+  (Lisp_Object window, Lisp_Object left_width, Lisp_Object right_width, Lisp_Object outside_margins)
 {
   struct window *w = decode_window (window);
 
@@ -6765,8 +6670,7 @@ DEFUN ("window-fringes", Fwindow_fringes, Swindow_fringes,
        doc: /* Get width of fringes of window WINDOW.
 If WINDOW is omitted or nil, use the currently selected window.
 Value is a list of the form (LEFT-WIDTH RIGHT-WIDTH OUTSIDE-MARGINS).  */)
-     (window)
-     Lisp_Object window;
+  (Lisp_Object window)
 {
   struct window *w = decode_window (window);
 
@@ -6793,8 +6697,7 @@ bar: left, right, or nil.
 If WIDTH is nil, use the frame's scroll-bar width.
 If VERTICAL-TYPE is t, use the frame's scroll-bar type.
 Fourth parameter HORIZONTAL-TYPE is currently unused.  */)
-     (window, width, vertical_type, horizontal_type)
-     Lisp_Object window, width, vertical_type, horizontal_type;
+  (Lisp_Object window, Lisp_Object width, Lisp_Object vertical_type, Lisp_Object horizontal_type)
 {
   struct window *w = decode_window (window);
 
@@ -6838,8 +6741,7 @@ If WINDOW is omitted or nil, use the currently selected window.
 Value is a list of the form (WIDTH COLS VERTICAL-TYPE HORIZONTAL-TYPE).
 If WIDTH is nil or TYPE is t, the window is using the frame's corresponding
 value.  */)
-     (window)
-     Lisp_Object window;
+  (Lisp_Object window)
 {
   struct window *w = decode_window (window);
   return Fcons (make_number ((WINDOW_CONFIG_SCROLL_BAR_WIDTH (w)
@@ -6861,8 +6763,7 @@ DEFUN ("window-vscroll", Fwindow_vscroll, Swindow_vscroll, 0, 2, 0,
 Use the selected window if WINDOW is nil or omitted.
 Normally, value is a multiple of the canonical character height of WINDOW;
 optional second arg PIXELS-P means value is measured in pixels.  */)
-  (window, pixels_p)
-     Lisp_Object window, pixels_p;
+  (Lisp_Object window, Lisp_Object pixels_p)
 {
   Lisp_Object result;
   struct frame *f;
@@ -6895,8 +6796,7 @@ If PIXELS-P is nil, VSCROLL may have to be rounded so that it
 corresponds to an integral number of pixels.  The return value is the
 result of this rounding.
 If PIXELS-P is non-nil, the return value is VSCROLL.  */)
-  (window, vscroll, pixels_p)
-     Lisp_Object window, vscroll, pixels_p;
+  (Lisp_Object window, Lisp_Object vscroll, Lisp_Object pixels_p)
 {
   struct window *w;
   struct frame *f;
@@ -6940,10 +6840,7 @@ If PIXELS-P is non-nil, the return value is VSCROLL.  */)
    additional argument USER_DATA.  Stops when FN returns 0.  */
 
 void
-foreach_window (f, fn, user_data)
-     struct frame *f;
-     int (* fn) P_ ((struct window *, void *));
-     void *user_data;
+foreach_window (struct frame *f, int (*fn) (struct window *, void *), void *user_data)
 {
   /* delete_frame may set FRAME_ROOT_WINDOW (f) to Qnil.  */
   if (WINDOWP (FRAME_ROOT_WINDOW (f)))
@@ -6957,10 +6854,7 @@ foreach_window (f, fn, user_data)
    Stop when FN returns 0.  Value is 0 if stopped by FN.  */
 
 static int
-foreach_window_1 (w, fn, user_data)
-     struct window *w;
-     int (* fn) P_ ((struct window *, void *));
-     void *user_data;
+foreach_window_1 (struct window *w, int (*fn) (struct window *, void *), void *user_data)
 {
   int cont;
 
@@ -6985,9 +6879,7 @@ foreach_window_1 (w, fn, user_data)
    the window start.  */
 
 static int
-freeze_window_start (w, freeze_p)
-     struct window *w;
-     void *freeze_p;
+freeze_window_start (struct window *w, void *freeze_p)
 {
   if (MINI_WINDOW_P (w)
       || (WINDOWP (selected_window) /* Can be nil in corner cases.  */
@@ -7007,9 +6899,7 @@ freeze_window_start (w, freeze_p)
    means freeze the window start.  */
 
 void
-freeze_window_starts (f, freeze_p)
-     struct frame *f;
-     int freeze_p;
+freeze_window_starts (struct frame *f, int freeze_p)
 {
   foreach_window (f, freeze_window_start, (void *) (freeze_p ? f : 0));
 }
@@ -7023,9 +6913,7 @@ freeze_window_starts (f, freeze_p)
    describe the same state of affairs.  This is used by Fequal.  */
 
 int
-compare_window_configurations (c1, c2, ignore_positions)
-     Lisp_Object c1, c2;
-     int ignore_positions;
+compare_window_configurations (Lisp_Object c1, Lisp_Object c2, int ignore_positions)
 {
   register struct save_window_data *d1, *d2;
   struct Lisp_Vector *sw1, *sw2;
@@ -7142,8 +7030,7 @@ DEFUN ("compare-window-configurations", Fcompare_window_configurations,
        doc: /* Compare two window configurations as regards the structure of windows.
 This function ignores details such as the values of point and mark
 and scrolling positions.  */)
-     (x, y)
-     Lisp_Object x, y;
+  (Lisp_Object x, Lisp_Object y)
 {
   if (compare_window_configurations (x, y, 1))
     return Qt;
@@ -7151,7 +7038,7 @@ and scrolling positions.  */)
 }
 
 void
-init_window_once ()
+init_window_once (void)
 {
   struct frame *f = make_initial_frame ();
   XSETFRAME (selected_frame, f);
@@ -7164,13 +7051,13 @@ init_window_once ()
 }
 
 void
-init_window ()
+init_window (void)
 {
   Vwindow_list = Qnil;
 }
 
 void
-syms_of_window ()
+syms_of_window (void)
 {
   Qscroll_up = intern_c_string ("scroll-up");
   staticpro (&Qscroll_up);
@@ -7314,8 +7201,10 @@ frame to be redrawn only if it is a tty frame.  */);
   defsubr (&Sset_window_redisplay_end_trigger);
   defsubr (&Swindow_edges);
   defsubr (&Swindow_pixel_edges);
+  defsubr (&Swindow_absolute_pixel_edges);
   defsubr (&Swindow_inside_edges);
   defsubr (&Swindow_inside_pixel_edges);
+  defsubr (&Swindow_inside_absolute_pixel_edges);
   defsubr (&Scoordinates_in_window_p);
   defsubr (&Swindow_at);
   defsubr (&Swindow_point);
@@ -7377,7 +7266,7 @@ frame to be redrawn only if it is a tty frame.  */);
 }
 
 void
-keys_of_window ()
+keys_of_window (void)
 {
   initial_define_key (control_x_map, '1', "delete-other-windows");
   initial_define_key (control_x_map, '2', "split-window");