1 files changed, 17 insertions, 3 deletions

diff --git a/src/window.c b/src/window.c
index 039e955efd0..d4e6ac3569f 100644
--- a/src/window.c
+++ b/src/window.c
@@ -661,12 +661,20 @@ coordinates_in_window (w, x, y)
           || WINDOW_RIGHTMOST_P (w))
         {
           if (!WINDOW_LEFTMOST_P (w) && abs (*x - x0) < grabbable_width)
-            return ON_VERTICAL_BORDER;
+            {
+              *x = max (0, *x - x0);
+              *y -= top_y;
+              return ON_VERTICAL_BORDER;
+            }
         }
       else
         {
           if (abs (*x - x1) < grabbable_width)
-            return ON_VERTICAL_BORDER;
+            {
+              *x = min (x1, *x) - x0;
+              *y -= top_y;
+              return ON_VERTICAL_BORDER;
+            }
         }
 
       if (*x < x0 || *x >= x1)
@@ -708,7 +716,11 @@ coordinates_in_window (w, x, y)
           && !WINDOW_HAS_VERTICAL_SCROLL_BAR (w)
           && !WINDOW_RIGHTMOST_P (w)
           && (abs (*x - right_x) < grabbable_width))
-        return ON_VERTICAL_BORDER;
+        {
+          *x = min (right_x, *x) - left_x;
+          *y -= top_y;
+          return ON_VERTICAL_BORDER;
+        }
     }
   else
     {
@@ -720,6 +732,8 @@ coordinates_in_window (w, x, y)
         {
           /* On the border on the right side of the window?  Assume that
              this area begins at RIGHT_X minus a canonical char width.  */
+          *x = min (right_x, *x) - left_x;
+          *y -= top_y;
           return ON_VERTICAL_BORDER;
         }
     }