* window.c (Fpos_visible_in_window_p): Simplify return value for

partially visible rows.
(window_scroll_pixel_based): Adapt to that change.

diff --git a/src/window.c b/src/window.c
index ef3d38c15544ba8e0928807244fbc12deda03fe4..bdc105da3ede03289a60b74e47b45f0aada308f9 100644 (file)
--- a/src/window.c
+++ b/src/window.c
@@ -333,11 +333,10 @@ If POS is only out of view because of horizontal scrolling, return non-nil.
 POS defaults to point in WINDOW; WINDOW defaults to the selected window.
 
 If POS is visible, return t if PARTIALLY is nil; if PARTIALLY is non-nil,
-return value is a list (X Y FULLY [RTOP RBOT]) where X and Y are the pixel
-coordinates relative to the top left corner of the window, and FULLY is t if the
-character after POS is fully visible and nil otherwise.  If FULLY is nil,
-RTOP and RBOT are the number of pixels invisible at the top and bottom row
-of the window.  */)
+return value is a list (X Y PARTIAL) where X and Y are the pixel coordinates
+relative to the top left corner of the window. PARTIAL is nil if the character
+after POS is fully visible; otherwise it is a cons (RTOP . RBOT) where RTOP
+and RBOT are the number of pixels invisible at the top and bottom of the row.  */)
      (pos, window, partially)
      Lisp_Object pos, window, partially;
 {
@@ -376,12 +375,10 @@ of the window.  */)
   if (!NILP (in_window) && !NILP (partially))
     in_window = Fcons (make_number (x),
                       Fcons (make_number (y),
-                             Fcons (fully_p ? Qt : Qnil,
-                                    (fully_p
-                                     ? Qnil
-                                     : Fcons (make_number (rtop),
-                                              Fcons (make_number (rbot),
-                                                     Qnil))))));
+                             Fcons ((fully_p ? Qnil
+                                    : Fcons (make_number (rtop),
+                                             make_number (rbot))),
+                                    Qnil)));
   return in_window;
 }
 
@@ -4578,7 +4575,7 @@ window_scroll_pixel_based (window, n, whole, noerror)
     }
   else if (auto_window_vscroll_p)
     {
-      if (NILP (XCAR (XCDR (XCDR (tem)))))
+      if (tem = XCAR (XCDR (XCDR (tem))), CONSP (tem))
        {
          int px;
          int dy = WINDOW_FRAME_LINE_HEIGHT (w);
@@ -4586,13 +4583,13 @@ window_scroll_pixel_based (window, n, whole, noerror)
            dy = window_box_height (w) - next_screen_context_lines * dy;
          dy *= n;
 
-         if (n < 0 && (px = XINT (Fnth (make_number (3), tem))) > 0)
+         if (n < 0 && (px = XINT (XCAR (tem))) > 0)
            {
              px = max (0, -w->vscroll - min (px, -dy));
              Fset_window_vscroll (window, make_number (px), Qt);
              return;
            }
-         if (n > 0 && (px = XINT (Fnth (make_number (4), tem))) > 0)
+         if (n > 0 && (px = XINT (XCDR (tem))) > 0)
            {
              px = max (0, -w->vscroll + min (px, dy));
              Fset_window_vscroll (window, make_number (px), Qt);