updated for version 7.3.708

Problem:    Filler lines above the first line may be hidden when opening Vim.
Solution:   Change how topfill is computed. (Christian Brabandt)

Author: brammool

src/diff.c

@@ -615,11 +615,13 @@ diff_redraw(dofold)
 #endif
 	    /* A change may have made filler lines invalid, need to take care
 	     * of that for other windows. */
-	    if (wp != curwin && wp->w_topfill > 0)
+	    n = diff_check(wp, wp->w_topline);
+	    if ((wp != curwin && wp->w_topfill > 0) || n > 0)
 	    {
-		n = diff_check(wp, wp->w_topline);
 		if (wp->w_topfill > n)
 		    wp->w_topfill = (n < 0 ? 0 : n);
+		else if (n > 0 && n > wp->w_topfill)
+		    wp->w_topfill = n;
 	    }
 	}
 }

src/testdir/test47.in

@@ -36,7 +36,22 @@ j:let three = three . "-" . winline()
 :call append("$", two)
 :call append("$", three)
 :$-2,$w! test.out
-:unlet one two three
+:" Test that diffing shows correct filler lines
+:diffoff!
+:windo :bw!
+:enew
+:put =range(4,10)
+:1d _
+:vnew
+:put =range(1,10)
+:1d _
+:windo :diffthis
+:wincmd h
+:let w0=line('w0')
+:enew
+:put =w0
+:.w >> test.out
+:unlet! one two three w0
 :qa!
 ENDTEST
 

src/testdir/test47.ok

@@ -1,3 +1,4 @@
 2-4-5-6-8-9
 1-2-4-5-8
 2-3-4-5-6-7-8
+1

src/version.c

@@ -725,6 +725,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    708,
 /**/
     707,
 /**/