patch 7.4.2275

Problem:    ":diffoff!" does not remove filler lines.
Solution:   Force a redraw and invalidate the cursor. (closes #1014)

Author: brammool

src/diff.c

@@ -1236,10 +1236,14 @@ ex_diffoff(exarg_T *eap)
 							 : wp->w_p_fen_save;
 
 		foldUpdateAll(wp);
-		/* make sure topline is not halfway a fold */
-		changed_window_setting_win(wp);
 #endif
 	    }
+	    /* remove filler lines */
+	    wp->w_topfill = 0;
+
+	    /* make sure topline is not halfway a fold and cursor is
+	     * invalidated */
+	    changed_window_setting_win(wp);
 
 	    /* Note: 'sbo' is not restored, it's a global option. */
 	    diff_buf_adjust(wp);

src/testdir/test_diffmode.vim

@@ -202,3 +202,19 @@ func Test_diffget_diffput()
   bwipe!
   enew!
 endfunc
+
+func Test_diffoff()
+  enew!
+  call setline(1, ['Two', 'Three'])
+  let normattr = screenattr(1, 1)
+  diffthis
+  botright vert new
+  call setline(1, ['One', '', 'Two', 'Three'])
+  diffthis
+  redraw
+  diffoff!
+  redraw
+  call assert_equal(normattr, screenattr(1, 1))
+  bwipe!
+  bwipe!
+endfunc

src/version.c

@@ -763,6 +763,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    2275,
 /**/
     2274,
 /**/