Patch 7.4.853
Problem:    "zt" in diff mode does not always work properly. (Gary Johnson)
Solution:   Don't count filler lines twice. (Christian Brabandt)
Files:      src/move.c


*** ../vim-7.4.852/src/move.c   2015-08-11 19:13:55.142175641 +0200
--- src/move.c  2015-09-01 20:44:12.507720203 +0200
***************
*** 1732,1738 ****
       * - at least 'scrolloff' lines above and below the cursor
       */
      validate_cheight();
!     used = curwin->w_cline_height;
      if (curwin->w_cursor.lnum < curwin->w_topline)
        scrolled = used;
  
--- 1732,1738 ----
       * - at least 'scrolloff' lines above and below the cursor
       */
      validate_cheight();
!     used = curwin->w_cline_height; /* includes filler lines above */
      if (curwin->w_cursor.lnum < curwin->w_topline)
        scrolled = used;
  
***************
*** 1751,1760 ****
      new_topline = top + 1;
  
  #ifdef FEAT_DIFF
!     /* count filler lines of the cursor window as context */
!     i = diff_check_fill(curwin, curwin->w_cursor.lnum);
!     used += i;
!     extra += i;
  #endif
  
      /*
--- 1751,1762 ----
      new_topline = top + 1;
  
  #ifdef FEAT_DIFF
!     /* used already contains the number of filler lines above, don't add it
!      * again.
!      * TODO: if filler lines above new top are to be considered as context for
!      * the current window, leave next statement commented, else hide filler
!      * lines above cursor line, by adding them to extra */
!     /* extra += diff_check_fill(curwin, curwin->w_cursor.lnum); */
  #endif
  
      /*
*** ../vim-7.4.852/src/version.c        2015-09-01 20:31:16.311776122 +0200
--- src/version.c       2015-09-01 20:40:44.433880446 +0200
***************
*** 743,744 ****
--- 743,746 ----
  {   /* Add new patch number below this line */
+ /**/
+     853,
  /**/

-- 
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 /// Bram Moolenaar -- b...@moolenaar.net -- http://www.Moolenaar.net   \\\
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