*** empty log message ***

1 files changed, 19 insertions, 8 deletions

diff --git a/src/dispnew.c b/src/dispnew.c
index fce73f1e292..89c4bcfba13 100644
--- a/src/dispnew.c
+++ b/src/dispnew.c
@@ -534,8 +534,8 @@ safe_bcopy (from, to, size)
         }
       else
         {
-          /* Since the overlap is always less than SIZE, we can always
-             safely do this loop once.  */
+          /* Since TO - FROM >= 64, the overlap is less than SIZE,
+             so we can always safely do this loop once.  */
           while (endt > to)
             {
               endt -= (to - from);
@@ -584,7 +584,7 @@ safe_bcopy (from, to, size)
 }
 #endif
 
-/* Rotate a vector of SIZE bytes, by DISTANCE bytes.
+/* Rotate a vector of SIZE bytes right, by DISTANCE bytes.
    DISTANCE may be negative.  */
 
 static void
@@ -1248,20 +1248,31 @@ buffer_posn_from_coords (window, col, line)
        in the buffer, or at the top of the window; both of these
        assure us that the character at bufp starts flush with the
        beginning of the line.  */
-    int i;
+    int start_line;
+
+#if 0
+    /* Unfortunately, the bufp array doesn't seem to be updated properly.  */
 
     /* Only works for the leftmost window on a line.  bufp is useless
        for the others.  */
     if (window_left == 0)
       {
-        for (i = line; i > XFASTINT (window->top); i--)
-          if (FETCH_CHAR (bufp[i]-1) == '\n')
+        for (start_line = line; start_line > 0; start_line--)
+          if (FETCH_CHAR (bufp[XFASTINT (window->top) + start_line]-1)
+              == '\n')
             break;
+        posn = bufp[XFASTINT (window->top) + start_line];
+      }
+    else
+#endif
+      {
+        start_line = 0;
+        posn = Fmarker_position (window->start);
       }
 
     posn
-      = compute_motion (bufp[i], i, window_left,
-                        ZV, col, line,
+      = compute_motion (posn, start_line, window_left,
+                        ZV, line, col - window_left,
                         window_width, XINT (window->hscroll), 0)
         ->bufpos;
   }