Merge pull request #4230 from jbradaric/vim-7.4.853

vim-patch:7.4.{853,856}

src/nvim/move.c

@@ -1288,9 +1288,10 @@ void scroll_cursor_top(int min_scroll, int always)
    * - at least 'scrolloff' lines above and below the cursor
    */
   validate_cheight();
-  int used = curwin->w_cline_height;
-  if (curwin->w_cursor.lnum < curwin->w_topline)
+  int used = curwin->w_cline_height;  // includes filler lines above
+  if (curwin->w_cursor.lnum < curwin->w_topline) {
     scrolled = used;
+  }
 
   if (hasFolding(curwin->w_cursor.lnum, &top, &bot)) {
     --top;
@@ -1301,9 +1302,10 @@ void scroll_cursor_top(int min_scroll, int always)
   }
   new_topline = top + 1;
 
-  /* count filler lines of the cursor window as context */
+  // "used" already contains the number of filler lines above, don't add it
+  // again.
+  // Hide filler lines above cursor line by adding them to "extra".
   int extra = diff_check_fill(curwin, curwin->w_cursor.lnum);
-  used += extra;
 
   /*
    * Check if the lines from "top" to "bot" fit in the window.  If they do,
@@ -1312,7 +1314,7 @@ void scroll_cursor_top(int min_scroll, int always)
   while (top > 0) {
     int i = hasFolding(top, &top, NULL)
             ? 1  // count one logical line for a sequence of folded lines
-            : plines(top);
+            : plines_nofill(top);
     used += i;
     if (extra + i <= off && bot < curbuf->b_ml.ml_line_count) {
       if (hasFolding(bot, NULL, &bot))

src/nvim/version.c

@@ -432,10 +432,10 @@ static int included_patches[] = {
   // 859,
   858,
   // 857,
-  // 856,
+  856,
   // 855 NA
   // 854 NA
-  // 853,
+  853,
   // 852 NA
   // 851 NA
   // 850 NA