> Thanks for figuring this out.  You had some nice examples for how to
> reproduce the problem you are fixing, how about turning those into a
> test?

Updated patch: added tests, removed few autocommands left (BufLeave, TabLeave 
and WinLeave from leave_tabpage). Changes from the previous patch are here: 
https://bitbucket.org/ZyX_I/vim/changeset/86a5abc53a8e20a2f738cd5a099da82c8de48ce3.

# HG changeset patch
# User ZyX <[email protected]>
# Date 1366986343 -14400
# Branch python-extended-2
# Node ID 869937c7f5d4cfb2a2a1b50ffb88b84db5eeea17
# Parent  1ffc8d40ecea0d75d48612b828fd62d9e3669191
Various tab and autocommands related fixes:

- Do not launch autocommands for various set*var functions
- Fix missing (BufEnter) autocommands on :tabclose
- Fix duplicate (WinEnter) autocommands on :tabclose
- Fix wrong ordering (TabEnter then WinEnter instead of the opposite) of
  autocommands on :tabclose and :tabnew

diff -r 1ffc8d40ecea -r 869937c7f5d4 runtime/doc/eval.txt
--- a/runtime/doc/eval.txt      Thu Apr 25 00:40:58 2013 +0400
+++ b/runtime/doc/eval.txt      Fri Apr 26 18:25:43 2013 +0400
@@ -5320,8 +5320,6 @@
                |t:var|
                Note that the variable name without "t:" must be used.
                Tabs are numbered starting with one.
-               Vim briefly goes to the tab page {tabnr}, this may trigger
-               TabLeave and TabEnter autocommands.
                This function is not available in the |sandbox|.
 
 settabwinvar({tabnr}, {winnr}, {varname}, {val})       *settabwinvar()*
@@ -5334,8 +5332,6 @@
                doesn't work for a global or local buffer variable.
                For a local buffer option the global value is unchanged.
                Note that the variable name without "w:" must be used.
-               Vim briefly goes to the tab page {tabnr}, this may trigger
-               TabLeave and TabEnter autocommands.
                Examples: >
                        :call settabwinvar(1, 1, "&list", 0)
                        :call settabwinvar(3, 2, "myvar", "foobar")
diff -r 1ffc8d40ecea -r 869937c7f5d4 src/buffer.c
--- a/src/buffer.c      Thu Apr 25 00:40:58 2013 +0400
+++ b/src/buffer.c      Fri Apr 26 18:25:43 2013 +0400
@@ -4551,7 +4551,7 @@
      * When the ":tab" modifier was used do this for all tab pages.
      */
     if (had_tab > 0)
-       goto_tabpage_tp(first_tabpage, TRUE);
+       goto_tabpage_tp(first_tabpage, TRUE, TRUE);
     for (;;)
     {
        tpnext = curtab->tp_next;
@@ -4663,7 +4663,7 @@
        if (!valid_tabpage(tpnext))
            tpnext = first_tabpage;     /* start all over...*/
 # endif
-       goto_tabpage_tp(tpnext, TRUE);
+       goto_tabpage_tp(tpnext, TRUE, TRUE);
     }
 
     /*
@@ -4767,13 +4767,13 @@
     if (last_curtab != new_curtab)
     {
        if (valid_tabpage(last_curtab))
-           goto_tabpage_tp(last_curtab, TRUE);
+           goto_tabpage_tp(last_curtab, TRUE, TRUE);
        if (win_valid(last_curwin))
            win_enter(last_curwin, FALSE);
     }
     /* to window with first arg */
     if (valid_tabpage(new_curtab))
-       goto_tabpage_tp(new_curtab, TRUE);
+       goto_tabpage_tp(new_curtab, TRUE, TRUE);
     if (win_valid(new_curwin))
        win_enter(new_curwin, FALSE);
 
@@ -4825,7 +4825,7 @@
      */
 #ifdef FEAT_WINDOWS
     if (had_tab > 0)
-       goto_tabpage_tp(first_tabpage, TRUE);
+       goto_tabpage_tp(first_tabpage, TRUE, TRUE);
     for (;;)
     {
 #endif
@@ -4865,7 +4865,7 @@
        /* Without the ":tab" modifier only do the current tab page. */
        if (had_tab == 0 || tpnext == NULL)
            break;
-       goto_tabpage_tp(tpnext, TRUE);
+       goto_tabpage_tp(tpnext, TRUE, TRUE);
     }
 #endif
 
diff -r 1ffc8d40ecea -r 869937c7f5d4 src/eval.c
--- a/src/eval.c        Thu Apr 25 00:40:58 2013 +0400
+++ b/src/eval.c        Fri Apr 26 18:25:43 2013 +0400
@@ -16604,7 +16604,7 @@
     if (tp != NULL && varname != NULL && varp != NULL)
     {
        save_curtab = curtab;
-       goto_tabpage_tp(tp, TRUE);
+       goto_tabpage_tp(tp, FALSE, FALSE);
 
        tabvarname = alloc((unsigned)STRLEN(varname) + 3);
        if (tabvarname != NULL)
@@ -16617,7 +16617,7 @@
 
        /* Restore current tabpage */
        if (valid_tabpage(save_curtab))
-           goto_tabpage_tp(save_curtab, TRUE);
+           goto_tabpage_tp(save_curtab, FALSE, FALSE);
     }
 }
 
@@ -16654,7 +16654,7 @@
     /* set curwin to be our win, temporarily */
     *save_curwin = curwin;
     *save_curtab = curtab;
-    goto_tabpage_tp(tp, TRUE);
+    goto_tabpage_tp(tp, FALSE, FALSE);
     if (!win_valid(win))
        return 1;
     curwin = win;
@@ -16672,7 +16672,7 @@
     /* Restore current tabpage and window, if still valid (autocomands can
      * make them invalid). */
     if (valid_tabpage(save_curtab))
-       goto_tabpage_tp(save_curtab, TRUE);
+       goto_tabpage_tp(save_curtab, FALSE, FALSE);
     if (win_valid(save_curwin))
     {
        curwin = save_curwin;
diff -r 1ffc8d40ecea -r 869937c7f5d4 src/ex_cmds2.c
--- a/src/ex_cmds2.c    Thu Apr 25 00:40:58 2013 +0400
+++ b/src/ex_cmds2.c    Fri Apr 26 18:25:43 2013 +0400
@@ -2482,7 +2482,7 @@
                /* go to window "tp" */
                if (!valid_tabpage(tp))
                    break;
-               goto_tabpage_tp(tp, TRUE);
+               goto_tabpage_tp(tp, TRUE, TRUE);
                tp = tp->tp_next;
            }
 #endif
diff -r 1ffc8d40ecea -r 869937c7f5d4 src/fileio.c
--- a/src/fileio.c      Thu Apr 25 00:40:58 2013 +0400
+++ b/src/fileio.c      Fri Apr 26 18:25:43 2013 +0400
@@ -8934,7 +8934,7 @@
                if (wp == aucmd_win)
                {
                    if (tp != curtab)
-                       goto_tabpage_tp(tp, TRUE);
+                       goto_tabpage_tp(tp, TRUE, TRUE);
                    win_goto(aucmd_win);
                    goto win_found;
                }
diff -r 1ffc8d40ecea -r 869937c7f5d4 src/proto/window.pro
--- a/src/proto/window.pro      Thu Apr 25 00:40:58 2013 +0400
+++ b/src/proto/window.pro      Fri Apr 26 18:25:43 2013 +0400
@@ -27,7 +27,7 @@
 tabpage_T *find_tabpage __ARGS((int n));
 int tabpage_index __ARGS((tabpage_T *ftp));
 void goto_tabpage __ARGS((int n));
-void goto_tabpage_tp __ARGS((tabpage_T *tp, int trigger_autocmds));
+void goto_tabpage_tp __ARGS((tabpage_T *tp, int trigger_enter_autocmds, int 
trigger_leave_autocmds));
 void goto_tabpage_win __ARGS((tabpage_T *tp, win_T *wp));
 void tabpage_move __ARGS((int nr));
 void win_goto __ARGS((win_T *wp));
diff -r 1ffc8d40ecea -r 869937c7f5d4 src/testdir/test62.in
--- a/src/testdir/test62.in     Thu Apr 25 00:40:58 2013 +0400
+++ b/src/testdir/test62.in     Fri Apr 26 18:25:43 2013 +0400
@@ -120,6 +120,68 @@
 :endtry
 i =a
 
 :"
+:" Test autocommands
+:tabonly!
+:let g:r=[]
+:command -nargs=1 -bar C :call add(g:r, '=== ' . <q-args> . ' ===')|<args>
+:function Test()
+    let hasau=has('autocmd')
+    if hasau
+        autocmd TabEnter * :call add(g:r, 'TabEnter')
+        autocmd WinEnter * :call add(g:r, 'WinEnter')
+        autocmd BufEnter * :call add(g:r, 'BufEnter')
+        autocmd TabLeave * :call add(g:r, 'TabLeave')
+        autocmd WinLeave * :call add(g:r, 'WinLeave')
+        autocmd BufLeave * :call add(g:r, 'BufLeave')
+    endif
+    let t:a='a'
+    C tab split
+    if !hasau
+        let g:r+=['WinLeave', 'TabLeave', 'WinEnter', 'TabEnter']
+    endif
+    let t:a='b'
+    C tabnew
+    if !hasau
+        let g:r+=['WinLeave', 'TabLeave', 'WinEnter', 'TabEnter', 'BufLeave', 
'BufEnter']
+    endif
+    let t:a='c'
+    call add(g:r, join(map(range(1, tabpagenr('$')), 'gettabvar(v:val, "a")')))
+    C call map(range(1, tabpagenr('$')), 'settabvar(v:val, "a", v:val*2)')
+    call add(g:r, join(map(range(1, tabpagenr('$')), 'gettabvar(v:val, "a")')))
+    let w:a='a'
+    C vsplit
+    if !hasau
+        let g:r+=['WinLeave', 'WinEnter']
+    endif
+    let w:a='a'
+    let tabn=tabpagenr()
+    let winr=range(1, winnr('$'))
+    C tabnext 1
+    if !hasau
+        let g:r+=['BufLeave', 'WinLeave', 'TabLeave', 'WinEnter', 'TabEnter', 
'BufEnter']
+    endif
+    call add(g:r, join(map(copy(winr), 'gettabwinvar('.tabn.', v:val, "a")')))
+    C call map(copy(winr), 'settabwinvar('.tabn.', v:val, "a", v:val*2)')
+    call add(g:r, join(map(copy(winr), 'gettabwinvar('.tabn.', v:val, "a")')))
+    if hasau
+        augroup TabDestructive
+            autocmd TabEnter * :C tabnext 2 | C tabclose 3
+        augroup END
+        C tabnext 3
+        let g:r+=[tabpagenr().'/'.tabpagenr('$')]
+        autocmd! TabDestructive TabEnter
+        C tabnew
+        C tabnext 1
+        autocmd TabDestructive TabEnter * nested :C tabnext 2 | C tabclose 3
+        C tabnext 3
+        let g:r+=[tabpagenr().'/'.tabpagenr('$')]
+    else
+        let g:r+=["=== tabnext 3 
===","BufLeave","WinLeave","TabLeave","WinEnter","TabEnter","=== tabnext 2 
===","=== tabclose 3 ===","2/2","=== tabnew 
===","WinLeave","TabLeave","WinEnter","TabEnter","BufLeave","BufEnter","=== 
tabnext 1 
===","BufLeave","WinLeave","TabLeave","WinEnter","TabEnter","BufEnter","=== 
tabnext 3 ===","BufLeave","WinLeave","TabLeave","WinEnter","TabEnter","=== 
tabnext 2 ===","BufLeave","WinLeave","TabLeave","WinEnter","TabEnter","=== 
tabnext 2 ===","=== tabclose 3 ===","BufEnter","=== tabclose 3 ===","2/2",]
+    endif
+endfunction
+:call Test()
+:$ put =g:r
+:"
 :"
 :/^Results/,$w! test.out
 :qa!
diff -r 1ffc8d40ecea -r 869937c7f5d4 src/testdir/test62.ok
--- a/src/testdir/test62.ok     Thu Apr 25 00:40:58 2013 +0400
+++ b/src/testdir/test62.ok     Fri Apr 26 18:25:43 2013 +0400
@@ -18,3 +18,71 @@
 4
 6
 E474 caught.
+=== tab split ===
+WinLeave
+TabLeave
+WinEnter
+TabEnter
+=== tabnew ===
+WinLeave
+TabLeave
+WinEnter
+TabEnter
+BufLeave
+BufEnter
+a b c
+=== call map(range(1, tabpagenr('$')), 'settabvar(v:val, ===
+a b c
+=== vsplit ===
+WinLeave
+WinEnter
+=== tabnext 1 ===
+BufLeave
+WinLeave
+TabLeave
+WinEnter
+TabEnter
+BufEnter
+a a
+=== call map(copy(winr), 'settabwinvar('.tabn.', v:val, ===
+a a
+=== tabnext 3 ===
+BufLeave
+WinLeave
+TabLeave
+WinEnter
+TabEnter
+=== tabnext 2 ===
+=== tabclose 3 ===
+2/2
+=== tabnew ===
+WinLeave
+TabLeave
+WinEnter
+TabEnter
+BufLeave
+BufEnter
+=== tabnext 1 ===
+BufLeave
+WinLeave
+TabLeave
+WinEnter
+TabEnter
+BufEnter
+=== tabnext 3 ===
+BufLeave
+WinLeave
+TabLeave
+WinEnter
+TabEnter
+=== tabnext 2 ===
+BufLeave
+WinLeave
+TabLeave
+WinEnter
+TabEnter
+=== tabnext 2 ===
+=== tabclose 3 ===
+BufEnter
+=== tabclose 3 ===
+2/2
diff -r 1ffc8d40ecea -r 869937c7f5d4 src/window.c
--- a/src/window.c      Thu Apr 25 00:40:58 2013 +0400
+++ b/src/window.c      Fri Apr 26 18:25:43 2013 +0400
@@ -44,11 +44,11 @@
 static void new_frame __ARGS((win_T *wp));
 #if defined(FEAT_WINDOWS) || defined(PROTO)
 static tabpage_T *alloc_tabpage __ARGS((void));
-static int leave_tabpage __ARGS((buf_T *new_curbuf));
-static void enter_tabpage __ARGS((tabpage_T *tp, buf_T *old_curbuf, int 
trigger_autocmds));
+static int leave_tabpage __ARGS((buf_T *new_curbuf, int 
trigger_leave_autocmds));
+static void enter_tabpage __ARGS((tabpage_T *tp, buf_T *old_curbuf, int 
trigger_enter_autocmds, int trigger_leave_autocmds));
 static void frame_fix_height __ARGS((win_T *wp));
 static int frame_minheight __ARGS((frame_T *topfrp, win_T *next_curwin));
-static void win_enter_ext __ARGS((win_T *wp, int undo_sync, int no_curwin));
+static void win_enter_ext __ARGS((win_T *wp, int undo_sync, int no_curwin, int 
trigger_enter_autocmds, int trigger_leave_autocmds));
 static void win_free __ARGS((win_T *wp, tabpage_T *tp));
 static void frame_append __ARGS((frame_T *after, frame_T *frp));
 static void frame_insert __ARGS((frame_T *before, frame_T *frp));
@@ -353,11 +353,11 @@
                                                     && valid_tabpage(oldtab))
                    {
                        newtab = curtab;
-                       goto_tabpage_tp(oldtab, TRUE);
+                       goto_tabpage_tp(oldtab, TRUE, TRUE);
                        if (curwin == wp)
                            win_close(curwin, FALSE);
                        if (valid_tabpage(newtab))
-                           goto_tabpage_tp(newtab, TRUE);
+                           goto_tabpage_tp(newtab, TRUE, TRUE);
                    }
                }
                break;
@@ -2124,6 +2124,7 @@
 {
     if (firstwin == lastwin)
     {
+       buf_T   *old_curbuf;
        /*
         * Closing the last window in a tab page.  First go to another tab
         * page and then close the window and the tab page.  This avoids that
@@ -2132,7 +2133,8 @@
         * Don't trigger autocommands yet, they may use wrong values, so do
         * that below.
         */
-       goto_tabpage_tp(alt_tabpage(), FALSE);
+       old_curbuf = curbuf;
+       goto_tabpage_tp(alt_tabpage(), FALSE, TRUE);
        redraw_tabline = TRUE;
 
        /* Safety check: Autocommands may have closed the window when jumping
@@ -2148,8 +2150,10 @@
        /* Since goto_tabpage_tp above did not trigger *Enter autocommands, do
         * that now. */
 #ifdef FEAT_AUTOCMD
+       apply_autocmds(EVENT_WINENTER, NULL, NULL, FALSE, curbuf);
        apply_autocmds(EVENT_TABENTER, NULL, NULL, FALSE, curbuf);
-       apply_autocmds(EVENT_WINENTER, NULL, NULL, FALSE, curbuf);
+       if (old_curbuf != curbuf)
+           apply_autocmds(EVENT_BUFENTER, NULL, NULL, FALSE, curbuf);
 #endif
        return TRUE;
     }
@@ -2341,7 +2345,7 @@
        win_comp_pos();
     if (close_curwin)
     {
-       win_enter_ext(wp, FALSE, TRUE);
+       win_enter_ext(wp, FALSE, TRUE, TRUE, TRUE);
 #ifdef FEAT_AUTOCMD
        if (other_buffer)
            /* careful: after this wp and win may be invalid! */
@@ -3529,7 +3533,7 @@
        return FAIL;
 
     /* Remember the current windows in this Tab page. */
-    if (leave_tabpage(curbuf) == FAIL)
+    if (leave_tabpage(curbuf, TRUE) == FAIL)
     {
        vim_free(newtp);
        return FAIL;
@@ -3574,14 +3578,14 @@
 
        redraw_all_later(CLEAR);
 #ifdef FEAT_AUTOCMD
+       apply_autocmds(EVENT_WINENTER, NULL, NULL, FALSE, curbuf);
        apply_autocmds(EVENT_TABENTER, NULL, NULL, FALSE, curbuf);
-       apply_autocmds(EVENT_WINENTER, NULL, NULL, FALSE, curbuf);
 #endif
        return OK;
     }
 
     /* Failed, get back the previous Tab page */
-    enter_tabpage(curtab, curbuf, TRUE);
+    enter_tabpage(curtab, curbuf, TRUE, TRUE);
     return FAIL;
 }
 
@@ -3692,9 +3696,10 @@
  * Careful: When OK is returned need to get a new tab page very very soon!
  */
     static int
-leave_tabpage(new_curbuf)
+leave_tabpage(new_curbuf, trigger_leave_autocmds)
     buf_T      *new_curbuf UNUSED;    /* what is going to be the new curbuf,
                                       NULL if unknown */
+    int                trigger_leave_autocmds UNUSED;
 {
     tabpage_T  *tp = curtab;
 
@@ -3702,18 +3707,21 @@
     reset_VIsual_and_resel();  /* stop Visual mode */
 #endif
 #ifdef FEAT_AUTOCMD
-    if (new_curbuf != curbuf)
-    {
-       apply_autocmds(EVENT_BUFLEAVE, NULL, NULL, FALSE, curbuf);
+    if (trigger_leave_autocmds)
+    {
+       if (new_curbuf != curbuf)
+       {
+           apply_autocmds(EVENT_BUFLEAVE, NULL, NULL, FALSE, curbuf);
+           if (curtab != tp)
+               return FAIL;
+       }
+       apply_autocmds(EVENT_WINLEAVE, NULL, NULL, FALSE, curbuf);
        if (curtab != tp)
            return FAIL;
-    }
-    apply_autocmds(EVENT_WINLEAVE, NULL, NULL, FALSE, curbuf);
-    if (curtab != tp)
-       return FAIL;
-    apply_autocmds(EVENT_TABLEAVE, NULL, NULL, FALSE, curbuf);
-    if (curtab != tp)
-       return FAIL;
+       apply_autocmds(EVENT_TABLEAVE, NULL, NULL, FALSE, curbuf);
+       if (curtab != tp)
+           return FAIL;
+    }
 #endif
 #if defined(FEAT_GUI)
     /* Remove the scrollbars.  They may be added back later. */
@@ -3734,13 +3742,15 @@
 /*
  * Start using tab page "tp".
  * Only to be used after leave_tabpage() or freeing the current tab page.
- * Only trigger *Enter autocommands when trigger_autocmds is TRUE.
+ * Only trigger *Enter autocommands when trigger_enter_autocmds is TRUE.
+ * Only trigger *Leave autocommands when trigger_leave_autocmds is TRUE.
  */
     static void
-enter_tabpage(tp, old_curbuf, trigger_autocmds)
+enter_tabpage(tp, old_curbuf, trigger_enter_autocmds, trigger_leave_autocmds)
     tabpage_T  *tp;
     buf_T      *old_curbuf UNUSED;
-    int                trigger_autocmds UNUSED;
+    int                trigger_enter_autocmds UNUSED;
+    int                trigger_leave_autocmds UNUSED;
 {
     int                old_off = tp->tp_firstwin->w_winrow;
     win_T      *next_prevwin = tp->tp_prevwin;
@@ -3753,7 +3763,7 @@
     /* We would like doing the TabEnter event first, but we don't have a
      * valid current window yet, which may break some commands.
      * This triggers autocommands, thus may make "tp" invalid. */
-    win_enter_ext(tp->tp_curwin, FALSE, TRUE);
+    win_enter_ext(tp->tp_curwin, FALSE, TRUE, trigger_enter_autocmds, 
trigger_leave_autocmds);
     prevwin = next_prevwin;
 
     last_status(FALSE);                /* status line may appear or disappear 
*/
@@ -3788,7 +3798,7 @@
 #ifdef FEAT_AUTOCMD
     /* Apply autocommands after updating the display, when 'rows' and
      * 'columns' have been set correctly. */
-    if (trigger_autocmds)
+    if (trigger_enter_autocmds)
     {
        apply_autocmds(EVENT_TABENTER, NULL, NULL, FALSE, curbuf);
        if (old_curbuf != curbuf)
@@ -3869,7 +3879,7 @@
        }
     }
 
-    goto_tabpage_tp(tp, TRUE);
+    goto_tabpage_tp(tp, TRUE, TRUE);
 
 #ifdef FEAT_GUI_TABLINE
     if (gui_use_tabline())
@@ -3879,23 +3889,28 @@
 
 /*
  * Go to tabpage "tp".
- * Only trigger *Enter autocommands when trigger_autocmds is TRUE.
+ * Only trigger *Enter autocommands when trigger_enter_autocmds is TRUE.
+ * Only trigger *Leave autocommands when trigger_leave_autocmds is TRUE.
  * Note: doesn't update the GUI tab.
  */
     void
-goto_tabpage_tp(tp, trigger_autocmds)
+goto_tabpage_tp(tp, trigger_enter_autocmds, trigger_leave_autocmds)
     tabpage_T  *tp;
-    int                trigger_autocmds;
+    int                trigger_enter_autocmds;
+    int                trigger_leave_autocmds;
 {
     /* Don't repeat a message in another tab page. */
     set_keep_msg(NULL, 0);
 
-    if (tp != curtab && leave_tabpage(tp->tp_curwin->w_buffer) == OK)
+    if (tp != curtab && leave_tabpage(tp->tp_curwin->w_buffer,
+                                       trigger_leave_autocmds) == OK)
     {
        if (valid_tabpage(tp))
-           enter_tabpage(tp, curbuf, trigger_autocmds);
+           enter_tabpage(tp, curbuf, trigger_enter_autocmds,
+                   trigger_leave_autocmds);
        else
-           enter_tabpage(curtab, curbuf, trigger_autocmds);
+           enter_tabpage(curtab, curbuf, trigger_enter_autocmds,
+                   trigger_leave_autocmds);
     }
 }
 
@@ -3908,7 +3923,7 @@
     tabpage_T  *tp;
     win_T      *wp;
 {
-    goto_tabpage_tp(tp, TRUE);
+    goto_tabpage_tp(tp, TRUE, TRUE);
     if (curtab == tp && win_valid(wp))
     {
        win_enter(wp, TRUE);
@@ -4168,7 +4183,7 @@
     win_T      *wp;
     int                undo_sync;
 {
-    win_enter_ext(wp, undo_sync, FALSE);
+    win_enter_ext(wp, undo_sync, FALSE, TRUE, TRUE);
 }
 
 /*
@@ -4177,10 +4192,12 @@
  * been closed and isn't valid.
  */
     static void
-win_enter_ext(wp, undo_sync, curwin_invalid)
+win_enter_ext(wp, undo_sync, curwin_invalid, trigger_enter_autocmds, 
trigger_leave_autocmds)
     win_T      *wp;
     int                undo_sync;
     int                curwin_invalid;
+    int                trigger_enter_autocmds UNUSED;
+    int                trigger_leave_autocmds UNUSED;
 {
 #ifdef FEAT_AUTOCMD
     int                other_buffer = FALSE;
@@ -4190,7 +4207,7 @@
        return;
 
 #ifdef FEAT_AUTOCMD
-    if (!curwin_invalid)
+    if (!curwin_invalid && trigger_leave_autocmds)
     {
        /*
         * Be careful: If autocommands delete the window, return now.
@@ -4259,9 +4276,12 @@
     }
 
 #ifdef FEAT_AUTOCMD
-    apply_autocmds(EVENT_WINENTER, NULL, NULL, FALSE, curbuf);
-    if (other_buffer)
-       apply_autocmds(EVENT_BUFENTER, NULL, NULL, FALSE, curbuf);
+    if (trigger_enter_autocmds)
+    {
+       apply_autocmds(EVENT_WINENTER, NULL, NULL, FALSE, curbuf);
+       if (other_buffer)
+           apply_autocmds(EVENT_BUFENTER, NULL, NULL, FALSE, curbuf);
+    }
 #endif
 
 #ifdef FEAT_TITLE

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diff -cr vim.1ffc8d40ecea/runtime/doc/eval.txt vim.869937c7f5d4/runtime/doc/eval.txt
*** vim.1ffc8d40ecea/runtime/doc/eval.txt	2013-04-26 18:29:40.976148609 +0400
--- vim.869937c7f5d4/runtime/doc/eval.txt	2013-04-26 18:29:41.011148291 +0400
***************
*** 5320,5327 ****
  		|t:var|
  		Note that the variable name without "t:" must be used.
  		Tabs are numbered starting with one.
- 		Vim briefly goes to the tab page {tabnr}, this may trigger
- 		TabLeave and TabEnter autocommands.
  		This function is not available in the |sandbox|.
  
  settabwinvar({tabnr}, {winnr}, {varname}, {val})	*settabwinvar()*
--- 5320,5325 ----
***************
*** 5334,5341 ****
  		doesn't work for a global or local buffer variable.
  		For a local buffer option the global value is unchanged.
  		Note that the variable name without "w:" must be used.
- 		Vim briefly goes to the tab page {tabnr}, this may trigger
- 		TabLeave and TabEnter autocommands.
  		Examples: >
  			:call settabwinvar(1, 1, "&list", 0)
  			:call settabwinvar(3, 2, "myvar", "foobar")
--- 5332,5337 ----
diff -cr vim.1ffc8d40ecea/src/buffer.c vim.869937c7f5d4/src/buffer.c
*** vim.1ffc8d40ecea/src/buffer.c	2013-04-26 18:29:40.960148754 +0400
--- vim.869937c7f5d4/src/buffer.c	2013-04-26 18:29:40.995148436 +0400
***************
*** 4551,4557 ****
       * When the ":tab" modifier was used do this for all tab pages.
       */
      if (had_tab > 0)
! 	goto_tabpage_tp(first_tabpage, TRUE);
      for (;;)
      {
  	tpnext = curtab->tp_next;
--- 4551,4557 ----
       * When the ":tab" modifier was used do this for all tab pages.
       */
      if (had_tab > 0)
! 	goto_tabpage_tp(first_tabpage, TRUE, TRUE);
      for (;;)
      {
  	tpnext = curtab->tp_next;
***************
*** 4663,4669 ****
  	if (!valid_tabpage(tpnext))
  	    tpnext = first_tabpage;	/* start all over...*/
  # endif
! 	goto_tabpage_tp(tpnext, TRUE);
      }
  
      /*
--- 4663,4669 ----
  	if (!valid_tabpage(tpnext))
  	    tpnext = first_tabpage;	/* start all over...*/
  # endif
! 	goto_tabpage_tp(tpnext, TRUE, TRUE);
      }
  
      /*
***************
*** 4767,4779 ****
      if (last_curtab != new_curtab)
      {
  	if (valid_tabpage(last_curtab))
! 	    goto_tabpage_tp(last_curtab, TRUE);
  	if (win_valid(last_curwin))
  	    win_enter(last_curwin, FALSE);
      }
      /* to window with first arg */
      if (valid_tabpage(new_curtab))
! 	goto_tabpage_tp(new_curtab, TRUE);
      if (win_valid(new_curwin))
  	win_enter(new_curwin, FALSE);
  
--- 4767,4779 ----
      if (last_curtab != new_curtab)
      {
  	if (valid_tabpage(last_curtab))
! 	    goto_tabpage_tp(last_curtab, TRUE, TRUE);
  	if (win_valid(last_curwin))
  	    win_enter(last_curwin, FALSE);
      }
      /* to window with first arg */
      if (valid_tabpage(new_curtab))
! 	goto_tabpage_tp(new_curtab, TRUE, TRUE);
      if (win_valid(new_curwin))
  	win_enter(new_curwin, FALSE);
  
***************
*** 4825,4831 ****
       */
  #ifdef FEAT_WINDOWS
      if (had_tab > 0)
! 	goto_tabpage_tp(first_tabpage, TRUE);
      for (;;)
      {
  #endif
--- 4825,4831 ----
       */
  #ifdef FEAT_WINDOWS
      if (had_tab > 0)
! 	goto_tabpage_tp(first_tabpage, TRUE, TRUE);
      for (;;)
      {
  #endif
***************
*** 4865,4871 ****
  	/* Without the ":tab" modifier only do the current tab page. */
  	if (had_tab == 0 || tpnext == NULL)
  	    break;
! 	goto_tabpage_tp(tpnext, TRUE);
      }
  #endif
  
--- 4865,4871 ----
  	/* Without the ":tab" modifier only do the current tab page. */
  	if (had_tab == 0 || tpnext == NULL)
  	    break;
! 	goto_tabpage_tp(tpnext, TRUE, TRUE);
      }
  #endif
  
diff -cr vim.1ffc8d40ecea/src/eval.c vim.869937c7f5d4/src/eval.c
*** vim.1ffc8d40ecea/src/eval.c	2013-04-26 18:29:40.991148473 +0400
--- vim.869937c7f5d4/src/eval.c	2013-04-26 18:29:41.025148164 +0400
***************
*** 16604,16610 ****
      if (tp != NULL && varname != NULL && varp != NULL)
      {
  	save_curtab = curtab;
! 	goto_tabpage_tp(tp, TRUE);
  
  	tabvarname = alloc((unsigned)STRLEN(varname) + 3);
  	if (tabvarname != NULL)
--- 16604,16610 ----
      if (tp != NULL && varname != NULL && varp != NULL)
      {
  	save_curtab = curtab;
! 	goto_tabpage_tp(tp, FALSE, FALSE);
  
  	tabvarname = alloc((unsigned)STRLEN(varname) + 3);
  	if (tabvarname != NULL)
***************
*** 16617,16623 ****
  
  	/* Restore current tabpage */
  	if (valid_tabpage(save_curtab))
! 	    goto_tabpage_tp(save_curtab, TRUE);
      }
  }
  
--- 16617,16623 ----
  
  	/* Restore current tabpage */
  	if (valid_tabpage(save_curtab))
! 	    goto_tabpage_tp(save_curtab, FALSE, FALSE);
      }
  }
  
***************
*** 16654,16660 ****
      /* set curwin to be our win, temporarily */
      *save_curwin = curwin;
      *save_curtab = curtab;
!     goto_tabpage_tp(tp, TRUE);
      if (!win_valid(win))
  	return 1;
      curwin = win;
--- 16654,16660 ----
      /* set curwin to be our win, temporarily */
      *save_curwin = curwin;
      *save_curtab = curtab;
!     goto_tabpage_tp(tp, FALSE, FALSE);
      if (!win_valid(win))
  	return 1;
      curwin = win;
***************
*** 16672,16678 ****
      /* Restore current tabpage and window, if still valid (autocomands can
       * make them invalid). */
      if (valid_tabpage(save_curtab))
! 	goto_tabpage_tp(save_curtab, TRUE);
      if (win_valid(save_curwin))
      {
  	curwin = save_curwin;
--- 16672,16678 ----
      /* Restore current tabpage and window, if still valid (autocomands can
       * make them invalid). */
      if (valid_tabpage(save_curtab))
! 	goto_tabpage_tp(save_curtab, FALSE, FALSE);
      if (win_valid(save_curwin))
      {
  	curwin = save_curwin;
diff -cr vim.1ffc8d40ecea/src/ex_cmds2.c vim.869937c7f5d4/src/ex_cmds2.c
*** vim.1ffc8d40ecea/src/ex_cmds2.c	2013-04-26 18:29:40.979148581 +0400
--- vim.869937c7f5d4/src/ex_cmds2.c	2013-04-26 18:29:41.014148264 +0400
***************
*** 2482,2488 ****
  		/* go to window "tp" */
  		if (!valid_tabpage(tp))
  		    break;
! 		goto_tabpage_tp(tp, TRUE);
  		tp = tp->tp_next;
  	    }
  #endif
--- 2482,2488 ----
  		/* go to window "tp" */
  		if (!valid_tabpage(tp))
  		    break;
! 		goto_tabpage_tp(tp, TRUE, TRUE);
  		tp = tp->tp_next;
  	    }
  #endif
diff -cr vim.1ffc8d40ecea/src/fileio.c vim.869937c7f5d4/src/fileio.c
*** vim.1ffc8d40ecea/src/fileio.c	2013-04-26 18:29:40.968148681 +0400
--- vim.869937c7f5d4/src/fileio.c	2013-04-26 18:29:41.003148364 +0400
***************
*** 8934,8940 ****
  		if (wp == aucmd_win)
  		{
  		    if (tp != curtab)
! 			goto_tabpage_tp(tp, TRUE);
  		    win_goto(aucmd_win);
  		    goto win_found;
  		}
--- 8934,8940 ----
  		if (wp == aucmd_win)
  		{
  		    if (tp != curtab)
! 			goto_tabpage_tp(tp, TRUE, TRUE);
  		    win_goto(aucmd_win);
  		    goto win_found;
  		}
diff -cr vim.1ffc8d40ecea/src/proto/window.pro vim.869937c7f5d4/src/proto/window.pro
*** vim.1ffc8d40ecea/src/proto/window.pro	2013-04-26 18:29:40.968148681 +0400
--- vim.869937c7f5d4/src/proto/window.pro	2013-04-26 18:29:41.004148355 +0400
***************
*** 27,33 ****
  tabpage_T *find_tabpage __ARGS((int n));
  int tabpage_index __ARGS((tabpage_T *ftp));
  void goto_tabpage __ARGS((int n));
! void goto_tabpage_tp __ARGS((tabpage_T *tp, int trigger_autocmds));
  void goto_tabpage_win __ARGS((tabpage_T *tp, win_T *wp));
  void tabpage_move __ARGS((int nr));
  void win_goto __ARGS((win_T *wp));
--- 27,33 ----
  tabpage_T *find_tabpage __ARGS((int n));
  int tabpage_index __ARGS((tabpage_T *ftp));
  void goto_tabpage __ARGS((int n));
! void goto_tabpage_tp __ARGS((tabpage_T *tp, int trigger_enter_autocmds, int trigger_leave_autocmds));
  void goto_tabpage_win __ARGS((tabpage_T *tp, win_T *wp));
  void tabpage_move __ARGS((int nr));
  void win_goto __ARGS((win_T *wp));
diff -cr vim.1ffc8d40ecea/src/testdir/test62.in vim.869937c7f5d4/src/testdir/test62.in
*** vim.1ffc8d40ecea/src/testdir/test62.in	2013-04-26 18:29:40.963148727 +0400
--- vim.869937c7f5d4/src/testdir/test62.in	2013-04-26 18:29:40.999148400 +0400
***************
*** 120,125 ****
--- 120,187 ----
  :endtry
  i=a

  :"
+ :" Test autocommands
+ :tabonly!
+ :let g:r=[]
+ :command -nargs=1 -bar C :call add(g:r, '=== ' . <q-args> . ' ===')|<args>
+ :function Test()
+     let hasau=has('autocmd')
+     if hasau
+         autocmd TabEnter * :call add(g:r, 'TabEnter')
+         autocmd WinEnter * :call add(g:r, 'WinEnter')
+         autocmd BufEnter * :call add(g:r, 'BufEnter')
+         autocmd TabLeave * :call add(g:r, 'TabLeave')
+         autocmd WinLeave * :call add(g:r, 'WinLeave')
+         autocmd BufLeave * :call add(g:r, 'BufLeave')
+     endif
+     let t:a='a'
+     C tab split
+     if !hasau
+         let g:r+=['WinLeave', 'TabLeave', 'WinEnter', 'TabEnter']
+     endif
+     let t:a='b'
+     C tabnew
+     if !hasau
+         let g:r+=['WinLeave', 'TabLeave', 'WinEnter', 'TabEnter', 'BufLeave', 'BufEnter']
+     endif
+     let t:a='c'
+     call add(g:r, join(map(range(1, tabpagenr('$')), 'gettabvar(v:val, "a")')))
+     C call map(range(1, tabpagenr('$')), 'settabvar(v:val, "a", v:val*2)')
+     call add(g:r, join(map(range(1, tabpagenr('$')), 'gettabvar(v:val, "a")')))
+     let w:a='a'
+     C vsplit
+     if !hasau
+         let g:r+=['WinLeave', 'WinEnter']
+     endif
+     let w:a='a'
+     let tabn=tabpagenr()
+     let winr=range(1, winnr('$'))
+     C tabnext 1
+     if !hasau
+         let g:r+=['BufLeave', 'WinLeave', 'TabLeave', 'WinEnter', 'TabEnter', 'BufEnter']
+     endif
+     call add(g:r, join(map(copy(winr), 'gettabwinvar('.tabn.', v:val, "a")')))
+     C call map(copy(winr), 'settabwinvar('.tabn.', v:val, "a", v:val*2)')
+     call add(g:r, join(map(copy(winr), 'gettabwinvar('.tabn.', v:val, "a")')))
+     if hasau
+         augroup TabDestructive
+             autocmd TabEnter * :C tabnext 2 | C tabclose 3
+         augroup END
+         C tabnext 3
+         let g:r+=[tabpagenr().'/'.tabpagenr('$')]
+         autocmd! TabDestructive TabEnter
+         C tabnew
+         C tabnext 1
+         autocmd TabDestructive TabEnter * nested :C tabnext 2 | C tabclose 3
+         C tabnext 3
+         let g:r+=[tabpagenr().'/'.tabpagenr('$')]
+     else
+         let g:r+=["=== tabnext 3 ===","BufLeave","WinLeave","TabLeave","WinEnter","TabEnter","=== tabnext 2 ===","=== tabclose 3 ===","2/2","=== tabnew ===","WinLeave","TabLeave","WinEnter","TabEnter","BufLeave","BufEnter","=== tabnext 1 ===","BufLeave","WinLeave","TabLeave","WinEnter","TabEnter","BufEnter","=== tabnext 3 ===","BufLeave","WinLeave","TabLeave","WinEnter","TabEnter","=== tabnext 2 ===","BufLeave","WinLeave","TabLeave","WinEnter","TabEnter","=== tabnext 2 ===","=== tabclose 3 ===","BufEnter","=== tabclose 3 ===","2/2",]
+     endif
+ endfunction
+ :call Test()
+ :$ put =g:r
+ :"
  :"
  :/^Results/,$w! test.out
  :qa!
diff -cr vim.1ffc8d40ecea/src/testdir/test62.ok vim.869937c7f5d4/src/testdir/test62.ok
*** vim.1ffc8d40ecea/src/testdir/test62.ok	2013-04-26 18:29:40.960148754 +0400
--- vim.869937c7f5d4/src/testdir/test62.ok	2013-04-26 18:29:40.996148427 +0400
***************
*** 18,20 ****
--- 18,88 ----
  4
  6
  E474 caught.
+ === tab split ===
+ WinLeave
+ TabLeave
+ WinEnter
+ TabEnter
+ === tabnew ===
+ WinLeave
+ TabLeave
+ WinEnter
+ TabEnter
+ BufLeave
+ BufEnter
+ a b c
+ === call map(range(1, tabpagenr('$')), 'settabvar(v:val, ===
+ a b c
+ === vsplit ===
+ WinLeave
+ WinEnter
+ === tabnext 1 ===
+ BufLeave
+ WinLeave
+ TabLeave
+ WinEnter
+ TabEnter
+ BufEnter
+ a a
+ === call map(copy(winr), 'settabwinvar('.tabn.', v:val, ===
+ a a
+ === tabnext 3 ===
+ BufLeave
+ WinLeave
+ TabLeave
+ WinEnter
+ TabEnter
+ === tabnext 2 ===
+ === tabclose 3 ===
+ 2/2
+ === tabnew ===
+ WinLeave
+ TabLeave
+ WinEnter
+ TabEnter
+ BufLeave
+ BufEnter
+ === tabnext 1 ===
+ BufLeave
+ WinLeave
+ TabLeave
+ WinEnter
+ TabEnter
+ BufEnter
+ === tabnext 3 ===
+ BufLeave
+ WinLeave
+ TabLeave
+ WinEnter
+ TabEnter
+ === tabnext 2 ===
+ BufLeave
+ WinLeave
+ TabLeave
+ WinEnter
+ TabEnter
+ === tabnext 2 ===
+ === tabclose 3 ===
+ BufEnter
+ === tabclose 3 ===
+ 2/2
diff -cr vim.1ffc8d40ecea/src/window.c vim.869937c7f5d4/src/window.c
*** vim.1ffc8d40ecea/src/window.c	2013-04-26 18:29:40.963148727 +0400
--- vim.869937c7f5d4/src/window.c	2013-04-26 18:29:40.999148400 +0400
***************
*** 44,54 ****
  static void new_frame __ARGS((win_T *wp));
  #if defined(FEAT_WINDOWS) || defined(PROTO)
  static tabpage_T *alloc_tabpage __ARGS((void));
! static int leave_tabpage __ARGS((buf_T *new_curbuf));
! static void enter_tabpage __ARGS((tabpage_T *tp, buf_T *old_curbuf, int trigger_autocmds));
  static void frame_fix_height __ARGS((win_T *wp));
  static int frame_minheight __ARGS((frame_T *topfrp, win_T *next_curwin));
! static void win_enter_ext __ARGS((win_T *wp, int undo_sync, int no_curwin));
  static void win_free __ARGS((win_T *wp, tabpage_T *tp));
  static void frame_append __ARGS((frame_T *after, frame_T *frp));
  static void frame_insert __ARGS((frame_T *before, frame_T *frp));
--- 44,54 ----
  static void new_frame __ARGS((win_T *wp));
  #if defined(FEAT_WINDOWS) || defined(PROTO)
  static tabpage_T *alloc_tabpage __ARGS((void));
! static int leave_tabpage __ARGS((buf_T *new_curbuf, int trigger_leave_autocmds));
! static void enter_tabpage __ARGS((tabpage_T *tp, buf_T *old_curbuf, int trigger_enter_autocmds, int trigger_leave_autocmds));
  static void frame_fix_height __ARGS((win_T *wp));
  static int frame_minheight __ARGS((frame_T *topfrp, win_T *next_curwin));
! static void win_enter_ext __ARGS((win_T *wp, int undo_sync, int no_curwin, int trigger_enter_autocmds, int trigger_leave_autocmds));
  static void win_free __ARGS((win_T *wp, tabpage_T *tp));
  static void frame_append __ARGS((frame_T *after, frame_T *frp));
  static void frame_insert __ARGS((frame_T *before, frame_T *frp));
***************
*** 353,363 ****
  						     && valid_tabpage(oldtab))
  		    {
  			newtab = curtab;
! 			goto_tabpage_tp(oldtab, TRUE);
  			if (curwin == wp)
  			    win_close(curwin, FALSE);
  			if (valid_tabpage(newtab))
! 			    goto_tabpage_tp(newtab, TRUE);
  		    }
  		}
  		break;
--- 353,363 ----
  						     && valid_tabpage(oldtab))
  		    {
  			newtab = curtab;
! 			goto_tabpage_tp(oldtab, TRUE, TRUE);
  			if (curwin == wp)
  			    win_close(curwin, FALSE);
  			if (valid_tabpage(newtab))
! 			    goto_tabpage_tp(newtab, TRUE, TRUE);
  		    }
  		}
  		break;
***************
*** 2124,2129 ****
--- 2124,2130 ----
  {
      if (firstwin == lastwin)
      {
+ 	buf_T	*old_curbuf;
  	/*
  	 * Closing the last window in a tab page.  First go to another tab
  	 * page and then close the window and the tab page.  This avoids that
***************
*** 2132,2138 ****
  	 * Don't trigger autocommands yet, they may use wrong values, so do
  	 * that below.
  	 */
! 	goto_tabpage_tp(alt_tabpage(), FALSE);
  	redraw_tabline = TRUE;
  
  	/* Safety check: Autocommands may have closed the window when jumping
--- 2133,2140 ----
  	 * Don't trigger autocommands yet, they may use wrong values, so do
  	 * that below.
  	 */
! 	old_curbuf = curbuf;
! 	goto_tabpage_tp(alt_tabpage(), FALSE, TRUE);
  	redraw_tabline = TRUE;
  
  	/* Safety check: Autocommands may have closed the window when jumping
***************
*** 2148,2155 ****
  	/* Since goto_tabpage_tp above did not trigger *Enter autocommands, do
  	 * that now. */
  #ifdef FEAT_AUTOCMD
- 	apply_autocmds(EVENT_TABENTER, NULL, NULL, FALSE, curbuf);
  	apply_autocmds(EVENT_WINENTER, NULL, NULL, FALSE, curbuf);
  #endif
  	return TRUE;
      }
--- 2150,2159 ----
  	/* Since goto_tabpage_tp above did not trigger *Enter autocommands, do
  	 * that now. */
  #ifdef FEAT_AUTOCMD
  	apply_autocmds(EVENT_WINENTER, NULL, NULL, FALSE, curbuf);
+ 	apply_autocmds(EVENT_TABENTER, NULL, NULL, FALSE, curbuf);
+ 	if (old_curbuf != curbuf)
+ 	    apply_autocmds(EVENT_BUFENTER, NULL, NULL, FALSE, curbuf);
  #endif
  	return TRUE;
      }
***************
*** 2341,2347 ****
  	win_comp_pos();
      if (close_curwin)
      {
! 	win_enter_ext(wp, FALSE, TRUE);
  #ifdef FEAT_AUTOCMD
  	if (other_buffer)
  	    /* careful: after this wp and win may be invalid! */
--- 2345,2351 ----
  	win_comp_pos();
      if (close_curwin)
      {
! 	win_enter_ext(wp, FALSE, TRUE, TRUE, TRUE);
  #ifdef FEAT_AUTOCMD
  	if (other_buffer)
  	    /* careful: after this wp and win may be invalid! */
***************
*** 3529,3535 ****
  	return FAIL;
  
      /* Remember the current windows in this Tab page. */
!     if (leave_tabpage(curbuf) == FAIL)
      {
  	vim_free(newtp);
  	return FAIL;
--- 3533,3539 ----
  	return FAIL;
  
      /* Remember the current windows in this Tab page. */
!     if (leave_tabpage(curbuf, TRUE) == FAIL)
      {
  	vim_free(newtp);
  	return FAIL;
***************
*** 3574,3587 ****
  
  	redraw_all_later(CLEAR);
  #ifdef FEAT_AUTOCMD
- 	apply_autocmds(EVENT_TABENTER, NULL, NULL, FALSE, curbuf);
  	apply_autocmds(EVENT_WINENTER, NULL, NULL, FALSE, curbuf);
  #endif
  	return OK;
      }
  
      /* Failed, get back the previous Tab page */
!     enter_tabpage(curtab, curbuf, TRUE);
      return FAIL;
  }
  
--- 3578,3591 ----
  
  	redraw_all_later(CLEAR);
  #ifdef FEAT_AUTOCMD
  	apply_autocmds(EVENT_WINENTER, NULL, NULL, FALSE, curbuf);
+ 	apply_autocmds(EVENT_TABENTER, NULL, NULL, FALSE, curbuf);
  #endif
  	return OK;
      }
  
      /* Failed, get back the previous Tab page */
!     enter_tabpage(curtab, curbuf, TRUE, TRUE);
      return FAIL;
  }
  
***************
*** 3692,3700 ****
   * Careful: When OK is returned need to get a new tab page very very soon!
   */
      static int
! leave_tabpage(new_curbuf)
      buf_T	*new_curbuf UNUSED;    /* what is going to be the new curbuf,
  				       NULL if unknown */
  {
      tabpage_T	*tp = curtab;
  
--- 3696,3705 ----
   * Careful: When OK is returned need to get a new tab page very very soon!
   */
      static int
! leave_tabpage(new_curbuf, trigger_leave_autocmds)
      buf_T	*new_curbuf UNUSED;    /* what is going to be the new curbuf,
  				       NULL if unknown */
+     int		trigger_leave_autocmds UNUSED;
  {
      tabpage_T	*tp = curtab;
  
***************
*** 3702,3719 ****
      reset_VIsual_and_resel();	/* stop Visual mode */
  #endif
  #ifdef FEAT_AUTOCMD
!     if (new_curbuf != curbuf)
      {
! 	apply_autocmds(EVENT_BUFLEAVE, NULL, NULL, FALSE, curbuf);
  	if (curtab != tp)
  	    return FAIL;
      }
-     apply_autocmds(EVENT_WINLEAVE, NULL, NULL, FALSE, curbuf);
-     if (curtab != tp)
- 	return FAIL;
-     apply_autocmds(EVENT_TABLEAVE, NULL, NULL, FALSE, curbuf);
-     if (curtab != tp)
- 	return FAIL;
  #endif
  #if defined(FEAT_GUI)
      /* Remove the scrollbars.  They may be added back later. */
--- 3707,3727 ----
      reset_VIsual_and_resel();	/* stop Visual mode */
  #endif
  #ifdef FEAT_AUTOCMD
!     if (trigger_leave_autocmds)
      {
! 	if (new_curbuf != curbuf)
! 	{
! 	    apply_autocmds(EVENT_BUFLEAVE, NULL, NULL, FALSE, curbuf);
! 	    if (curtab != tp)
! 		return FAIL;
! 	}
! 	apply_autocmds(EVENT_WINLEAVE, NULL, NULL, FALSE, curbuf);
! 	if (curtab != tp)
! 	    return FAIL;
! 	apply_autocmds(EVENT_TABLEAVE, NULL, NULL, FALSE, curbuf);
  	if (curtab != tp)
  	    return FAIL;
      }
  #endif
  #if defined(FEAT_GUI)
      /* Remove the scrollbars.  They may be added back later. */
***************
*** 3734,3746 ****
  /*
   * Start using tab page "tp".
   * Only to be used after leave_tabpage() or freeing the current tab page.
!  * Only trigger *Enter autocommands when trigger_autocmds is TRUE.
   */
      static void
! enter_tabpage(tp, old_curbuf, trigger_autocmds)
      tabpage_T	*tp;
      buf_T	*old_curbuf UNUSED;
!     int		trigger_autocmds UNUSED;
  {
      int		old_off = tp->tp_firstwin->w_winrow;
      win_T	*next_prevwin = tp->tp_prevwin;
--- 3742,3756 ----
  /*
   * Start using tab page "tp".
   * Only to be used after leave_tabpage() or freeing the current tab page.
!  * Only trigger *Enter autocommands when trigger_enter_autocmds is TRUE.
!  * Only trigger *Leave autocommands when trigger_leave_autocmds is TRUE.
   */
      static void
! enter_tabpage(tp, old_curbuf, trigger_enter_autocmds, trigger_leave_autocmds)
      tabpage_T	*tp;
      buf_T	*old_curbuf UNUSED;
!     int		trigger_enter_autocmds UNUSED;
!     int		trigger_leave_autocmds UNUSED;
  {
      int		old_off = tp->tp_firstwin->w_winrow;
      win_T	*next_prevwin = tp->tp_prevwin;
***************
*** 3753,3759 ****
      /* We would like doing the TabEnter event first, but we don't have a
       * valid current window yet, which may break some commands.
       * This triggers autocommands, thus may make "tp" invalid. */
!     win_enter_ext(tp->tp_curwin, FALSE, TRUE);
      prevwin = next_prevwin;
  
      last_status(FALSE);		/* status line may appear or disappear */
--- 3763,3769 ----
      /* We would like doing the TabEnter event first, but we don't have a
       * valid current window yet, which may break some commands.
       * This triggers autocommands, thus may make "tp" invalid. */
!     win_enter_ext(tp->tp_curwin, FALSE, TRUE, trigger_enter_autocmds, trigger_leave_autocmds);
      prevwin = next_prevwin;
  
      last_status(FALSE);		/* status line may appear or disappear */
***************
*** 3788,3794 ****
  #ifdef FEAT_AUTOCMD
      /* Apply autocommands after updating the display, when 'rows' and
       * 'columns' have been set correctly. */
!     if (trigger_autocmds)
      {
  	apply_autocmds(EVENT_TABENTER, NULL, NULL, FALSE, curbuf);
  	if (old_curbuf != curbuf)
--- 3798,3804 ----
  #ifdef FEAT_AUTOCMD
      /* Apply autocommands after updating the display, when 'rows' and
       * 'columns' have been set correctly. */
!     if (trigger_enter_autocmds)
      {
  	apply_autocmds(EVENT_TABENTER, NULL, NULL, FALSE, curbuf);
  	if (old_curbuf != curbuf)
***************
*** 3869,3875 ****
  	}
      }
  
!     goto_tabpage_tp(tp, TRUE);
  
  #ifdef FEAT_GUI_TABLINE
      if (gui_use_tabline())
--- 3879,3885 ----
  	}
      }
  
!     goto_tabpage_tp(tp, TRUE, TRUE);
  
  #ifdef FEAT_GUI_TABLINE
      if (gui_use_tabline())
***************
*** 3879,3901 ****
  
  /*
   * Go to tabpage "tp".
!  * Only trigger *Enter autocommands when trigger_autocmds is TRUE.
   * Note: doesn't update the GUI tab.
   */
      void
! goto_tabpage_tp(tp, trigger_autocmds)
      tabpage_T	*tp;
!     int		trigger_autocmds;
  {
      /* Don't repeat a message in another tab page. */
      set_keep_msg(NULL, 0);
  
!     if (tp != curtab && leave_tabpage(tp->tp_curwin->w_buffer) == OK)
      {
  	if (valid_tabpage(tp))
! 	    enter_tabpage(tp, curbuf, trigger_autocmds);
  	else
! 	    enter_tabpage(curtab, curbuf, trigger_autocmds);
      }
  }
  
--- 3889,3916 ----
  
  /*
   * Go to tabpage "tp".
!  * Only trigger *Enter autocommands when trigger_enter_autocmds is TRUE.
!  * Only trigger *Leave autocommands when trigger_leave_autocmds is TRUE.
   * Note: doesn't update the GUI tab.
   */
      void
! goto_tabpage_tp(tp, trigger_enter_autocmds, trigger_leave_autocmds)
      tabpage_T	*tp;
!     int		trigger_enter_autocmds;
!     int		trigger_leave_autocmds;
  {
      /* Don't repeat a message in another tab page. */
      set_keep_msg(NULL, 0);
  
!     if (tp != curtab && leave_tabpage(tp->tp_curwin->w_buffer,
! 					trigger_leave_autocmds) == OK)
      {
  	if (valid_tabpage(tp))
! 	    enter_tabpage(tp, curbuf, trigger_enter_autocmds,
! 		    trigger_leave_autocmds);
  	else
! 	    enter_tabpage(curtab, curbuf, trigger_enter_autocmds,
! 		    trigger_leave_autocmds);
      }
  }
  
***************
*** 3908,3914 ****
      tabpage_T	*tp;
      win_T	*wp;
  {
!     goto_tabpage_tp(tp, TRUE);
      if (curtab == tp && win_valid(wp))
      {
  	win_enter(wp, TRUE);
--- 3923,3929 ----
      tabpage_T	*tp;
      win_T	*wp;
  {
!     goto_tabpage_tp(tp, TRUE, TRUE);
      if (curtab == tp && win_valid(wp))
      {
  	win_enter(wp, TRUE);
***************
*** 4168,4174 ****
      win_T	*wp;
      int		undo_sync;
  {
!     win_enter_ext(wp, undo_sync, FALSE);
  }
  
  /*
--- 4183,4189 ----
      win_T	*wp;
      int		undo_sync;
  {
!     win_enter_ext(wp, undo_sync, FALSE, TRUE, TRUE);
  }
  
  /*
***************
*** 4177,4186 ****
   * been closed and isn't valid.
   */
      static void
! win_enter_ext(wp, undo_sync, curwin_invalid)
      win_T	*wp;
      int		undo_sync;
      int		curwin_invalid;
  {
  #ifdef FEAT_AUTOCMD
      int		other_buffer = FALSE;
--- 4192,4203 ----
   * been closed and isn't valid.
   */
      static void
! win_enter_ext(wp, undo_sync, curwin_invalid, trigger_enter_autocmds, trigger_leave_autocmds)
      win_T	*wp;
      int		undo_sync;
      int		curwin_invalid;
+     int		trigger_enter_autocmds UNUSED;
+     int		trigger_leave_autocmds UNUSED;
  {
  #ifdef FEAT_AUTOCMD
      int		other_buffer = FALSE;
***************
*** 4190,4196 ****
  	return;
  
  #ifdef FEAT_AUTOCMD
!     if (!curwin_invalid)
      {
  	/*
  	 * Be careful: If autocommands delete the window, return now.
--- 4207,4213 ----
  	return;
  
  #ifdef FEAT_AUTOCMD
!     if (!curwin_invalid && trigger_leave_autocmds)
      {
  	/*
  	 * Be careful: If autocommands delete the window, return now.
***************
*** 4259,4267 ****
      }
  
  #ifdef FEAT_AUTOCMD
!     apply_autocmds(EVENT_WINENTER, NULL, NULL, FALSE, curbuf);
!     if (other_buffer)
! 	apply_autocmds(EVENT_BUFENTER, NULL, NULL, FALSE, curbuf);
  #endif
  
  #ifdef FEAT_TITLE
--- 4276,4287 ----
      }
  
  #ifdef FEAT_AUTOCMD
!     if (trigger_enter_autocmds)
!     {
! 	apply_autocmds(EVENT_WINENTER, NULL, NULL, FALSE, curbuf);
! 	if (other_buffer)
! 	    apply_autocmds(EVENT_BUFENTER, NULL, NULL, FALSE, curbuf);
!     }
  #endif
  
  #ifdef FEAT_TITLE

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