(window_scroll_pixel_based): Signal "Beginning of buffer" when scroll-down

at the beginning of an empty buffer.

diff --git a/src/window.c b/src/window.c
index acb4c5cfbdde68cb0718fc969b56512d23a29530..e0ea9beb211319b4892391a767d5721a6286deac 100644 (file)
--- a/src/window.c
+++ b/src/window.c
@@ -4895,6 +4895,8 @@ window_scroll_pixel_based (window, n, whole, noerror)
            }
          else if (noerror)
            return;
+         else if (n < 0)       /* could happen with empty buffers */
+           Fsignal (Qbeginning_of_buffer, Qnil);
          else
            Fsignal (Qend_of_buffer, Qnil);
        }