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To: vim_dev@googlegroups.com
Subject: Patch 8.1.0394
Fcc: outbox
From: Bram Moolenaar <Bram@moolenaar.net>
Mime-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
------------

Patch 8.1.0394
Problem:    Diffs are not always updated correctly.
Solution:   When using internal diff update for any changes properly.
Files:	    src/structs.h, src/diff.c, src/proto/diff.pro, src/misc1.c,
            src/main.c


*** ../vim-8.1.0393/src/structs.h	2018-09-13 18:33:02.366426166 +0200
--- src/structs.h	2018-09-16 13:55:20.676506925 +0200
***************
*** 2509,2515 ****
  #ifdef FEAT_DIFF
      diff_T	    *tp_first_diff;
      buf_T	    *(tp_diffbuf[DB_COUNT]);
!     int		    tp_diff_invalid;	/* list of diffs is outdated */
  #endif
      frame_T	    *(tp_snapshot[SNAP_COUNT]);  /* window layout snapshots */
  #ifdef FEAT_EVAL
--- 2509,2516 ----
  #ifdef FEAT_DIFF
      diff_T	    *tp_first_diff;
      buf_T	    *(tp_diffbuf[DB_COUNT]);
!     int		    tp_diff_invalid;	// list of diffs is outdated
!     int		    tp_diff_update;	// update diffs before redrawing
  #endif
      frame_T	    *(tp_snapshot[SNAP_COUNT]);  /* window layout snapshots */
  #ifdef FEAT_EVAL
*** ../vim-8.1.0393/src/diff.c	2018-09-15 19:17:07.510653263 +0200
--- src/diff.c	2018-09-16 13:57:36.259501809 +0200
***************
*** 292,297 ****
--- 292,307 ----
      linenr_T	lnum_deleted = line1;	/* lnum of remaining deletion */
      int		check_unchanged;
  
+     if (diff_internal())
+     {
+ 	// Will udpate diffs before redrawing.  Set _invalid to update the
+ 	// diffs themselves, set _update to also update folds properly just
+ 	// before redrawing.
+ 	tp->tp_diff_invalid = TRUE;
+ 	tp->tp_diff_update = TRUE;
+ 	return;
+     }
+ 
      if (line2 == MAXLNUM)
      {
  	/* mark_adjust(99, MAXLNUM, 9, 0): insert lines */
***************
*** 640,646 ****
   */
      static void
  diff_redraw(
!     int		dofold)	    /* also recompute the folds */
  {
      win_T	*wp;
      int		n;
--- 650,656 ----
   */
      static void
  diff_redraw(
!     int		dofold)	    // also recompute the folds
  {
      win_T	*wp;
      int		n;
***************
*** 863,869 ****
   * Note that if the internal diff failed for one of the buffers, the external
   * diff will be used anyway.
   */
!     static int
  diff_internal(void)
  {
      return (diff_flags & DIFF_INTERNAL) != 0 && *p_dex == NUL;
--- 873,879 ----
   * Note that if the internal diff failed for one of the buffers, the external
   * diff will be used anyway.
   */
!     int
  diff_internal(void)
  {
      return (diff_flags & DIFF_INTERNAL) != 0 && *p_dex == NUL;
***************
*** 887,895 ****
  
  /*
   * Completely update the diffs for the buffers involved.
!  * This uses the ordinary "diff" command.
!  * The buffers are written to a file, also for unmodified buffers (the file
!  * could have been produced by autocommands, e.g. the netrw plugin).
   */
      void
  ex_diffupdate(exarg_T *eap)	// "eap" can be NULL
--- 897,905 ----
  
  /*
   * Completely update the diffs for the buffers involved.
!  * When using the external "diff" command the buffers are written to a file,
!  * also for unmodified buffers (the file could have been produced by
!  * autocommands, e.g. the netrw plugin).
   */
      void
  ex_diffupdate(exarg_T *eap)	// "eap" can be NULL
*** ../vim-8.1.0393/src/proto/diff.pro	2018-05-17 13:52:31.000000000 +0200
--- src/proto/diff.pro	2018-09-15 19:36:03.456884220 +0200
***************
*** 4,9 ****
--- 4,10 ----
  void diff_buf_add(buf_T *buf);
  void diff_invalidate(buf_T *buf);
  void diff_mark_adjust(linenr_T line1, linenr_T line2, long amount, long amount_after);
+ int diff_internal(void);
  void ex_diffupdate(exarg_T *eap);
  void ex_diffpatch(exarg_T *eap);
  void ex_diffsplit(exarg_T *eap);
*** ../vim-8.1.0393/src/misc1.c	2018-09-10 19:03:01.641716307 +0200
--- src/misc1.c	2018-09-16 14:00:38.606151494 +0200
***************
*** 3093,3099 ****
      changed_lines_buf(curbuf, lnum, lnume, xtra);
  
  #ifdef FEAT_DIFF
!     if (xtra == 0 && curwin->w_p_diff)
      {
  	/* When the number of lines doesn't change then mark_adjust() isn't
  	 * called and other diff buffers still need to be marked for
--- 3093,3099 ----
      changed_lines_buf(curbuf, lnum, lnume, xtra);
  
  #ifdef FEAT_DIFF
!     if (xtra == 0 && curwin->w_p_diff && !diff_internal())
      {
  	/* When the number of lines doesn't change then mark_adjust() isn't
  	 * called and other diff buffers still need to be marked for
***************
*** 3173,3178 ****
--- 3173,3183 ----
      /* mark the buffer as modified */
      changed();
  
+ #ifdef FEAT_DIFF
+     if (curwin->w_p_diff && diff_internal())
+ 	curtab->tp_diff_update = TRUE;
+ #endif
+ 
      /* set the '. mark */
      if (!cmdmod.keepjumps)
      {
*** ../vim-8.1.0393/src/main.c	2018-09-13 15:33:39.605712221 +0200
--- src/main.c	2018-09-16 14:01:36.921719929 +0200
***************
*** 1200,1205 ****
--- 1200,1214 ----
  	    }
  
  #if defined(FEAT_DIFF)
+ 	    // Updating diffs from changed() does not always work properly,
+ 	    // esp. updating folds.  Do an update just before redrawing if
+ 	    // needed.
+ 	    if (curtab->tp_diff_update || curtab->tp_diff_invalid)
+ 	    {
+ 		ex_diffupdate(NULL);
+ 		curtab->tp_diff_update = FALSE;
+ 	    }
+ 
  	    /* Scroll-binding for diff mode may have been postponed until
  	     * here.  Avoids doing it for every change. */
  	    if (diff_need_scrollbind)
*** ../vim-8.1.0393/src/version.c	2018-09-15 19:17:07.514653227 +0200
--- src/version.c	2018-09-15 20:13:51.888452794 +0200
***************
*** 796,797 ****
--- 796,799 ----
  {   /* Add new patch number below this line */
+ /**/
+     394,
  /**/

-- 
hundred-and-one symptoms of being an internet addict:
60. As your car crashes through the guardrail on a mountain road, your first
    instinct is to search for the "back" button.

 /// Bram Moolenaar -- Bram@Moolenaar.net -- http://www.Moolenaar.net   \\\
///        sponsor Vim, vote for features -- http://www.Vim.org/sponsor/ \\\
\\\  an exciting new programming language -- http://www.Zimbu.org        ///
 \\\            help me help AIDS victims -- http://ICCF-Holland.org    ///