diff --git a/src/Makefile b/src/Makefile
index d49c5f46ff..9a65df0499 100644
--- a/src/Makefile
+++ b/src/Makefile
@@ -2059,7 +2059,7 @@ test1 \
 	test_utf8 \
 	test_wordcount \
 	test2 test3 test4 test5 test6 test7 test8 test9 \
-	test11 test12 test13 test14 test15 test17 test18 test19 \
+	test11 test12 test14 test15 test17 test18 test19 \
 	test20 test21 test22 test23 test24 test25 test26 test27 test28 test29 \
 	test30 test31 test32 test33 test34 test36 test37 test38 test39 \
 	test40 test41 test42 test43 test44 test45 test48 test49 \
diff --git a/src/buffer.c b/src/buffer.c
index 3d637c0dd5..aade1d4c52 100644
--- a/src/buffer.c
+++ b/src/buffer.c
@@ -450,6 +450,11 @@ close_buffer(
     int		is_curbuf;
     int		nwindows;
     bufref_T	bufref;
+# ifdef FEAT_WINDOWS
+    int		is_curwin = (curwin!= NULL && curwin->w_buffer == buf);
+    win_T	*the_curwin = curwin;
+    tabpage_T	*the_curtab = curtab;
+# endif
 #endif
     int		unload_buf = (action != 0);
     int		del_buf = (action == DOBUF_DEL || action == DOBUF_WIPE);
@@ -476,6 +481,16 @@ close_buffer(
 	unload_buf = TRUE;
 #endif
 
+#ifdef FEAT_AUTOCMD
+    /* Disallow deleting the buffer when it is locked (already being closed or
+     * halfway a command that relies on it). Unloading is allowed. */
+    if (buf->b_locked > 0 && (del_buf || wipe_buf))
+    {
+	EMSG(_("E937: Attempt to delete a buffer that is in use"));
+	return;
+    }
+#endif
+
     if (win != NULL
 #ifdef FEAT_WINDOWS
 	&& win_valid_any_tab(win) /* in case autocommands closed the window */
@@ -499,7 +514,7 @@ close_buffer(
     /* When the buffer is no longer in a window, trigger BufWinLeave */
     if (buf->b_nwindows == 1)
     {
-	buf->b_closing = TRUE;
+	++buf->b_locked;
 	if (apply_autocmds(EVENT_BUFWINLEAVE, buf->b_fname, buf->b_fname,
 								  FALSE, buf)
 		&& !bufref_valid(&bufref))
@@ -509,7 +524,7 @@ aucmd_abort:
 	    EMSG(_(e_auabort));
 	    return;
 	}
-	buf->b_closing = FALSE;
+	--buf->b_locked;
 	if (abort_if_last && one_window())
 	    /* Autocommands made this the only window. */
 	    goto aucmd_abort;
@@ -518,13 +533,13 @@ aucmd_abort:
 	 * BufHidden */
 	if (!unload_buf)
 	{
-	    buf->b_closing = TRUE;
+	    ++buf->b_locked;
 	    if (apply_autocmds(EVENT_BUFHIDDEN, buf->b_fname, buf->b_fname,
 								  FALSE, buf)
 		    && !bufref_valid(&bufref))
 		/* Autocommands deleted the buffer. */
 		goto aucmd_abort;
-	    buf->b_closing = FALSE;
+	    --buf->b_locked;
 	    if (abort_if_last && one_window())
 		/* Autocommands made this the only window. */
 		goto aucmd_abort;
@@ -534,6 +549,19 @@ aucmd_abort:
 	    return;
 # endif
     }
+
+# ifdef FEAT_WINDOWS
+    /* If the buffer was in curwin and the window has changed, go back to that
+     * window, if it still exists.  This avoids that ":edit x" triggering a
+     * "tabnext" BufUnload autocmd leaves a window behind without a buffer. */
+    if (is_curwin && curwin != the_curwin &&  win_valid_any_tab(the_curwin))
+    {
+	block_autocmds();
+	goto_tabpage_win(the_curtab, the_curwin);
+	unblock_autocmds();
+    }
+# endif
+
     nwindows = buf->b_nwindows;
 #endif
 
@@ -683,13 +711,13 @@ buf_freeall(buf_T *buf, int flags)
     int		is_curbuf = (buf == curbuf);
     bufref_T	bufref;
 # ifdef FEAT_WINDOWS
-    int		is_curwin = (curwin!= NULL && curwin->w_buffer == buf);
+    int		is_curwin = (curwin != NULL && curwin->w_buffer == buf);
     win_T	*the_curwin = curwin;
     tabpage_T	*the_curtab = curtab;
 # endif
 
     /* Make sure the buffer isn't closed by autocommands. */
-    buf->b_closing = TRUE;
+    ++buf->b_locked;
     set_bufref(&bufref, buf);
     if (buf->b_ml.ml_mfp != NULL)
     {
@@ -715,7 +743,7 @@ buf_freeall(buf_T *buf, int flags)
 	    /* autocommands deleted the buffer */
 	    return;
     }
-    buf->b_closing = FALSE;
+    --buf->b_locked;
 
 # ifdef FEAT_WINDOWS
     /* If the buffer was in curwin and the window has changed, go back to that
@@ -748,7 +776,7 @@ buf_freeall(buf_T *buf, int flags)
 #endif
 #ifdef FEAT_SYN_HL
     /* Remove any ownsyntax, unless exiting. */
-    if (firstwin != NULL && curwin->w_buffer == buf)
+    if (curwin != NULL && curwin->w_buffer == buf)
 	reset_synblock(curwin);
 #endif
 
@@ -764,7 +792,7 @@ buf_freeall(buf_T *buf, int flags)
 		clearFolding(win);
     }
 # else
-    if (curwin->w_buffer == buf)
+    if (curwin != NULL && curwin->w_buffer == buf)
 	clearFolding(curwin);
 # endif
 #endif
@@ -1373,7 +1401,7 @@ do_buffer(
 	 */
 	while (buf == curbuf
 # ifdef FEAT_AUTOCMD
-		   && !(curwin->w_closing || curwin->w_buffer->b_closing)
+		   && !(curwin->w_closing || curwin->w_buffer->b_locked > 0)
 # endif
 		   && (firstwin != lastwin || first_tabpage->tp_next != NULL))
 	{
@@ -5110,7 +5138,7 @@ ex_buffer_all(exarg_T *eap)
 #endif
 		    ) && firstwin != lastwin
 #ifdef FEAT_AUTOCMD
-		    && !(wp->w_closing || wp->w_buffer->b_closing)
+		    && !(wp->w_closing || wp->w_buffer->b_locked > 0)
 #endif
 		    )
 	    {
diff --git a/src/channel.c b/src/channel.c
index 75359da5cb..7296e87d3b 100644
--- a/src/channel.c
+++ b/src/channel.c
@@ -2163,7 +2163,7 @@ channel_exe_cmd(channel_T *channel, int part, typval_T *argv)
 	}
 	else
 	{
-	    typval_T	*tv;
+	    typval_T	*tv = NULL;
 	    typval_T	res_tv;
 	    typval_T	err_tv;
 	    char_u	*json = NULL;
@@ -2180,8 +2180,6 @@ channel_exe_cmd(channel_T *channel, int part, typval_T *argv)
 		ch_logs(channel, "Calling '%s'", (char *)arg);
 		if (func_call(arg, &argv[2], NULL, NULL, &res_tv) == OK)
 		    tv = &res_tv;
-		else
-		    tv = NULL;
 	    }
 
 	    if (argv[id_idx].v_type == VAR_NUMBER)
@@ -2195,11 +2193,9 @@ channel_exe_cmd(channel_T *channel, int part, typval_T *argv)
 		    /* If evaluation failed or the result can't be encoded
 		     * then return the string "ERROR". */
 		    vim_free(json);
-		    free_tv(tv);
 		    err_tv.v_type = VAR_STRING;
 		    err_tv.vval.v_string = (char_u *)"ERROR";
-		    tv = &err_tv;
-		    json = json_encode_nr_expr(id, tv, options | JSON_NL);
+		    json = json_encode_nr_expr(id, &err_tv, options | JSON_NL);
 		}
 		if (json != NULL)
 		{
@@ -2212,7 +2208,7 @@ channel_exe_cmd(channel_T *channel, int part, typval_T *argv)
 	    --emsg_skip;
 	    if (tv == &res_tv)
 		clear_tv(tv);
-	    else if (tv != &err_tv)
+	    else
 		free_tv(tv);
 	}
     }
diff --git a/src/evalfunc.c b/src/evalfunc.c
index 78974e6c73..15b06dd70f 100644
--- a/src/evalfunc.c
+++ b/src/evalfunc.c
@@ -7648,7 +7648,7 @@ max_min(typval_T *argvars, typval_T *rettv, int domax)
 	}
     }
     else
-	EMSG(_(e_listdictarg));
+	EMSG2(_(e_listdictarg), domax ? "max()" : "min()");
     rettv->vval.v_number = error ? 0 : n;
 }
 
diff --git a/src/ex_cmds.c b/src/ex_cmds.c
index 61ab2ab125..daae0dd6fd 100644
--- a/src/ex_cmds.c
+++ b/src/ex_cmds.c
@@ -3872,8 +3872,8 @@ do_ecmd(
 	    oldbuf = TRUE;
 	    set_bufref(&bufref, buf);
 	    (void)buf_check_timestamp(buf, FALSE);
-	    /* Check if autocommands made buffer invalid or changed the current
-	     * buffer. */
+	    /* Check if autocommands made the buffer invalid or changed the
+	     * current buffer. */
 	    if (!bufref_valid(&bufref)
 #ifdef FEAT_AUTOCMD
 		    || curbuf != old_curbuf.br_buf
@@ -3938,8 +3938,9 @@ do_ecmd(
 		win_T	    *the_curwin = curwin;
 
 		/* Set the w_closing flag to avoid that autocommands close the
-		 * window. */
+		 * window.  And set b_locked for the same reason. */
 		the_curwin->w_closing = TRUE;
+		++buf->b_locked;
 
 		if (curbuf == old_curbuf.br_buf)
 #endif
@@ -3953,6 +3954,7 @@ do_ecmd(
 
 #ifdef FEAT_AUTOCMD
 		the_curwin->w_closing = FALSE;
+		--buf->b_locked;
 
 # ifdef FEAT_EVAL
 		/* autocmds may abort script processing */
@@ -4139,11 +4141,6 @@ do_ecmd(
     /* Assume success now */
     retval = OK;
 
-    /*
-     * Reset cursor position, could be used by autocommands.
-     */
-    check_cursor();
-
     /*
      * Check if we are editing the w_arg_idx file in the argument list.
      */
diff --git a/src/ex_docmd.c b/src/ex_docmd.c
index 2f5bc1b084..27482f0b86 100644
--- a/src/ex_docmd.c
+++ b/src/ex_docmd.c
@@ -7218,7 +7218,7 @@ ex_quit(exarg_T *eap)
     /* Refuse to quit when locked or when the buffer in the last window is
      * being closed (can only happen in autocommands). */
     if (curbuf_locked() || (wp->w_buffer->b_nwindows == 1
-						  && wp->w_buffer->b_closing))
+						&& wp->w_buffer->b_locked > 0))
 	return;
 #endif
 
@@ -7300,7 +7300,7 @@ ex_quit_all(exarg_T *eap)
     apply_autocmds(EVENT_QUITPRE, NULL, NULL, FALSE, curbuf);
     /* Refuse to quit when locked or when the buffer in the last window is
      * being closed (can only happen in autocommands). */
-    if (curbuf_locked() || (curbuf->b_nwindows == 1 && curbuf->b_closing))
+    if (curbuf_locked() || (curbuf->b_nwindows == 1 && curbuf->b_locked > 0))
 	return;
 #endif
 
@@ -7682,7 +7682,7 @@ ex_exit(exarg_T *eap)
     apply_autocmds(EVENT_QUITPRE, NULL, NULL, FALSE, curbuf);
     /* Refuse to quit when locked or when the buffer in the last window is
      * being closed (can only happen in autocommands). */
-    if (curbuf_locked() || (curbuf->b_nwindows == 1 && curbuf->b_closing))
+    if (curbuf_locked() || (curbuf->b_nwindows == 1 && curbuf->b_locked > 0))
 	return;
 #endif
 
diff --git a/src/misc2.c b/src/misc2.c
index a5da94f650..9fbd01c4cc 100644
--- a/src/misc2.c
+++ b/src/misc2.c
@@ -504,6 +504,28 @@ get_cursor_rel_lnum(
     return retval;
 }
 
+/*
+ * Make sure "pos.lnum" and "pos.col" are valid in "buf".
+ * This allows for the col to be on the NUL byte.
+ */
+    void
+check_pos(buf_T *buf, pos_T *pos)
+{
+    char_u *line;
+    colnr_T len;
+
+    if (pos->lnum > buf->b_ml.ml_line_count)
+	pos->lnum = buf->b_ml.ml_line_count;
+
+    if (pos->col > 0)
+    {
+	line = ml_get_buf(buf, pos->lnum, FALSE);
+	len = (colnr_T)STRLEN(line);
+	if (pos->col > len)
+	    pos->col = len;
+    }
+}
+
 /*
  * Make sure curwin->w_cursor.lnum is valid.
  */
diff --git a/src/move.c b/src/move.c
index 7f657c1c08..5d146f2227 100644
--- a/src/move.c
+++ b/src/move.c
@@ -2508,6 +2508,7 @@ onepage(int dir, long count)
     foldAdjustCursor();
 #endif
     cursor_correct();
+    check_cursor_col();
     if (retval == OK)
 	beginline(BL_SOL | BL_FIX);
     curwin->w_valid &= ~(VALID_WCOL|VALID_WROW|VALID_VIRTCOL);
diff --git a/src/normal.c b/src/normal.c
index 1f04172db8..f2e2197a1f 100644
--- a/src/normal.c
+++ b/src/normal.c
@@ -9485,7 +9485,10 @@ get_op_vcol(
 #ifdef FEAT_MBYTE
     /* prevent from moving onto a trail byte */
     if (has_mbyte)
+    {
+	check_pos(curwin->w_buffer, &oap->end);
 	mb_adjustpos(curwin->w_buffer, &oap->end);
+    }
 #endif
 
     getvvcol(curwin, &(oap->start), &oap->start_vcol, NULL, &oap->end_vcol);
diff --git a/src/ops.c b/src/ops.c
index c03c7be2e7..4bef6c5a21 100644
--- a/src/ops.c
+++ b/src/ops.c
@@ -4741,6 +4741,7 @@ fex_format(
     int		use_sandbox = was_set_insecurely((char_u *)"formatexpr",
 								   OPT_LOCAL);
     int		r;
+    char_u	*fex;
 
     /*
      * Set v:lnum to the first line number and v:count to the number of lines.
@@ -4750,16 +4751,22 @@ fex_format(
     set_vim_var_nr(VV_COUNT, count);
     set_vim_var_char(c);
 
+    /* Make a copy, the option could be changed while calling it. */
+    fex = vim_strsave(curbuf->b_p_fex);
+    if (fex == NULL)
+	return 0;
+
     /*
      * Evaluate the function.
      */
     if (use_sandbox)
 	++sandbox;
-    r = (int)eval_to_number(curbuf->b_p_fex);
+    r = (int)eval_to_number(fex);
     if (use_sandbox)
 	--sandbox;
 
     set_vim_var_string(VV_CHAR, NULL, -1);
+    vim_free(fex);
 
     return r;
 }
diff --git a/src/proto/misc2.pro b/src/proto/misc2.pro
index 70c7dae5b6..d18ae20330 100644
--- a/src/proto/misc2.pro
+++ b/src/proto/misc2.pro
@@ -12,6 +12,7 @@ int dec_cursor(void);
 int dec(pos_T *lp);
 int decl(pos_T *lp);
 linenr_T get_cursor_rel_lnum(win_T *wp, linenr_T lnum);
+void check_pos(buf_T *buf, pos_T *pos);
 void check_cursor_lnum(void);
 void check_cursor_col(void);
 void check_cursor_col_win(win_T *win);
diff --git a/src/structs.h b/src/structs.h
index e58c492234..dd7a7a2925 100644
--- a/src/structs.h
+++ b/src/structs.h
@@ -1848,8 +1848,8 @@ struct file_buffer
 
     int		b_flags;	/* various BF_ flags */
 #ifdef FEAT_AUTOCMD
-    int		b_closing;	/* buffer is being closed, don't let
-				   autocommands close it too. */
+    int		b_locked;	/* Buffer is being closed or referenced, don't
+				   let autocommands wipe it out. */
 #endif
 
     /*
diff --git a/src/testdir/Make_all.mak b/src/testdir/Make_all.mak
index b038605fbc..5a7099337d 100644
--- a/src/testdir/Make_all.mak
+++ b/src/testdir/Make_all.mak
@@ -111,7 +111,6 @@ SCRIPTS_MORE1 = \
 SCRIPTS_MORE2 = \
 	test2.out \
 	test12.out \
-	test13.out \
 	test25.out \
 	test49.out \
 	test97.out \
diff --git a/src/testdir/test13.in b/src/testdir/test13.in
deleted file mode 100644
index cbf78c7367..0000000000
--- a/src/testdir/test13.in
+++ /dev/null
@@ -1,64 +0,0 @@
-Tests for autocommands on :close command
-
-Write three files and open them, each in a window.
-Then go to next window, with autocommand that deletes the previous one.
-Do this twice, writing the file.
-
-Also test deleting the buffer on a Unload event.  If this goes wrong there
-will be the ATTENTION prompt.
-
-Also test changing buffers in a BufDel autocommand.  If this goes wrong there
-are ml_line errors and/or a Crash.
-
-STARTTEST
-:so small.vim
-:/^start of testfile/,/^end of testfile/w! Xtestje1
-:/^start of testfile/,/^end of testfile/w! Xtestje2
-:/^start of testfile/,/^end of testfile/w! Xtestje3
-:e Xtestje1
-otestje1
-:w
-:sp Xtestje2
-otestje2
-:w
-:sp Xtestje3
-otestje3
-:w
-
-:au WinLeave Xtestje2 bwipe
-
-:w! test.out
-:au WinLeave Xtestje1 bwipe Xtestje3
-:close
-:w >>test.out
-:e Xtestje1
-:bwipe Xtestje2 Xtestje3 test.out
-:au!
-:au! BufUnload Xtestje1 bwipe
-:e Xtestje3
-:w >>test.out
-:e Xtestje2
-:sp Xtestje1
-:e
-:w >>test.out
-:au!
-:only
-:e Xtestje1
-:bwipe Xtestje2 Xtestje3 test.out test13.in
-:au BufWipeout Xtestje1 buf Xtestje1
-:bwipe
-:w >>test.out
-:only
-:help
-:wincmd w
-:1quit
-:$put ='Final line'
-:$w >>test.out
-:qa!
-ENDTEST
-
-start of testfile
-	contents
-	contents
-	contents
-end of testfile
diff --git a/src/testdir/test13.ok b/src/testdir/test13.ok
deleted file mode 100644
index 66ebce63f7..0000000000
--- a/src/testdir/test13.ok
+++ /dev/null
@@ -1,31 +0,0 @@
-start of testfile
-testje1
-	contents
-	contents
-	contents
-end of testfile
-start of testfile
-testje1
-	contents
-	contents
-	contents
-end of testfile
-start of testfile
-testje3
-	contents
-	contents
-	contents
-end of testfile
-start of testfile
-testje2
-	contents
-	contents
-	contents
-end of testfile
-start of testfile
-testje1
-	contents
-	contents
-	contents
-end of testfile
-Final line
diff --git a/src/testdir/test_autocmd.vim b/src/testdir/test_autocmd.vim
index 8a44ab89bf..e18566b574 100644
--- a/src/testdir/test_autocmd.vim
+++ b/src/testdir/test_autocmd.vim
@@ -77,11 +77,59 @@ function Test_autocmd_bufunload_with_tabnext()
   quit
   call assert_equal(2, tabpagenr('$'))
 
+  autocmd! test_autocmd_bufunload_with_tabnext_group
   augroup! test_autocmd_bufunload_with_tabnext_group
   tablast
   quit
 endfunc
 
+function Test_autocmd_bufwinleave_with_tabfirst()
+  tabedit
+  augroup sample
+    autocmd!
+    autocmd BufWinLeave <buffer> tabfirst
+  augroup END
+  call setline(1, ['a', 'b', 'c'])
+  edit! a.txt
+endfunc
+
+" SEGV occurs in older versions.  (At least 7.4.2321 or older)
+function Test_autocmd_bufunload_avoiding_SEGV_01()
+  split aa.txt
+  let lastbuf = bufnr('$')
+
+  augroup test_autocmd_bufunload
+    autocmd!
+    exe 'autocmd BufUnload <buffer> ' . (lastbuf + 1) . 'bwipeout!'
+  augroup END
+
+  call assert_fails('edit bb.txt', 'E937:')
+
+  autocmd! test_autocmd_bufunload
+  augroup! test_autocmd_bufunload
+  bwipe! aa.txt
+  bwipe! bb.txt
+endfunc
+
+" SEGV occurs in older versions.  (At least 7.4.2321 or older)
+function Test_autocmd_bufunload_avoiding_SEGV_02()
+  setlocal buftype=nowrite
+  let lastbuf = bufnr('$')
+
+  augroup test_autocmd_bufunload
+    autocmd!
+    exe 'autocmd BufUnload <buffer> ' . (lastbuf + 1) . 'bwipeout!'
+  augroup END
+
+  normal! i1
+  call assert_fails('edit a.txt', 'E517:')
+  call feedkeys("\<CR>")
+
+  autocmd! test_autocmd_bufunload
+  augroup! test_autocmd_bufunload
+  bwipe! a.txt
+endfunc
+
 func Test_win_tab_autocmd()
   let g:record = []
 
@@ -196,3 +244,63 @@ func Test_augroup_deleted()
   au! VimEnter
 endfunc
 
+" Tests for autocommands on :close command.
+" This used to be in test13.
+func Test_three_windows()
+  " Write three files and open them, each in a window.
+  " Then go to next window, with autocommand that deletes the previous one.
+  " Do this twice, writing the file.
+  e! Xtestje1
+  call setline(1, 'testje1')
+  w
+  sp Xtestje2
+  call setline(1, 'testje2')
+  w
+  sp Xtestje3
+  call setline(1, 'testje3')
+  w
+  wincmd w
+  au WinLeave Xtestje2 bwipe
+  wincmd w
+  call assert_equal('Xtestje1', expand('%'))
+
+  au WinLeave Xtestje1 bwipe Xtestje3
+  close
+  call assert_equal('Xtestje1', expand('%'))
+
+  " Test deleting the buffer on a Unload event.  If this goes wrong there
+  " will be the ATTENTION prompt.
+  e Xtestje1
+  au!
+  au! BufUnload Xtestje1 bwipe
+  call assert_fails('e Xtestje3', 'E937:')
+  call assert_equal('Xtestje3', expand('%'))
+
+  e Xtestje2
+  sp Xtestje1
+  call assert_fails('e', 'E937:')
+  call assert_equal('Xtestje2', expand('%'))
+
+  " Test changing buffers in a BufWipeout autocommand.  If this goes wrong
+  " there are ml_line errors and/or a Crash.
+  au!
+  only
+  e Xanother
+  e Xtestje1
+  bwipe Xtestje2
+  bwipe Xtestje3
+  au BufWipeout Xtestje1 buf Xtestje1
+  bwipe
+  call assert_equal('Xanother', expand('%'))
+
+  only
+  help
+  wincmd w
+  1quit
+  call assert_equal('Xanother', expand('%'))
+
+  au!
+  call delete('Xtestje1')
+  call delete('Xtestje2')
+  call delete('Xtestje3')
+endfunc
diff --git a/src/testdir/test_expr.vim b/src/testdir/test_expr.vim
index 3097daf443..108ee508ea 100644
--- a/src/testdir/test_expr.vim
+++ b/src/testdir/test_expr.vim
@@ -335,6 +335,13 @@ function Test_printf_errors()
   call assert_fails('echo printf("%d", 1.2)', 'E805:')
 endfunc
 
+function Test_max_min_errors()
+  call assert_fails('call max(v:true)', 'E712:')
+  call assert_fails('call max(v:true)', 'max()')
+  call assert_fails('call min(v:true)', 'E712:')
+  call assert_fails('call min(v:true)', 'min()')
+endfunc
+
 function Test_printf_64bit()
   if has('num64')
     call assert_equal("123456789012345", printf('%d', 123456789012345))
diff --git a/src/testdir/test_normal.vim b/src/testdir/test_normal.vim
index ff6710218d..34561ffbab 100644
--- a/src/testdir/test_normal.vim
+++ b/src/testdir/test_normal.vim
@@ -192,6 +192,30 @@ func! Test_normal05_formatexpr()
   bw!
 endfu
 
+func Test_normal05_formatexpr_newbuf()
+  " Edit another buffer in the 'formatexpr' function
+  new
+  func! Format()
+    edit another
+  endfunc
+  set formatexpr=Format()
+  norm gqG
+  bw!
+  set formatexpr=
+endfunc
+
+func Test_normal05_formatexpr_setopt()
+  " Change the 'formatexpr' value in the function
+  new
+  func! Format()
+    set formatexpr=
+  endfunc
+  set formatexpr=Format()
+  norm gqG
+  bw!
+  set formatexpr=
+endfunc
+
 func! Test_normal06_formatprg()
   " basic test for formatprg
   " only test on non windows platform
@@ -398,6 +422,15 @@ func! Test_normal14_page()
   bw!
 endfu
 
+func! Test_normal14_page_eol()
+  10new
+  norm oxxxxxxx
+  exe "norm 2\<c-f>"
+  " check with valgrind that cursor is put back in column 1
+  exe "norm 2\<c-b>"
+  bw!
+endfunc
+
 func! Test_normal15_z_scroll_vert()
   " basic test for z commands that scroll the window
   call Setup_NewWindow()
diff --git a/src/version.c b/src/version.c
index 13e01086ac..515714d8bb 100644
--- a/src/version.c
+++ b/src/version.c
@@ -778,6 +778,24 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    2330,
+/**/
+    2329,
+/**/
+    2328,
+/**/
+    2327,
+/**/
+    2326,
+/**/
+    2325,
+/**/
+    2324,
+/**/
+    2323,
+/**/
+    2322,
 /**/
     2321,
 /**/
diff --git a/src/window.c b/src/window.c
index 9b81072e19..033ac551cf 100644
--- a/src/window.c
+++ b/src/window.c
@@ -2132,7 +2132,7 @@ close_windows(
     {
 	if (wp->w_buffer == buf && (!keep_curwin || wp != curwin)
 #ifdef FEAT_AUTOCMD
-		&& !(wp->w_closing || wp->w_buffer->b_closing)
+		&& !(wp->w_closing || wp->w_buffer->b_locked > 0)
 #endif
 		)
 	{
@@ -2153,7 +2153,7 @@ close_windows(
 	    for (wp = tp->tp_firstwin; wp != NULL; wp = wp->w_next)
 		if (wp->w_buffer == buf
 #ifdef FEAT_AUTOCMD
-		    && !(wp->w_closing || wp->w_buffer->b_closing)
+		    && !(wp->w_closing || wp->w_buffer->b_locked > 0)
 #endif
 		    )
 		{
@@ -2292,7 +2292,8 @@ win_close(win_T *win, int free_buf)
     }
 
 #ifdef FEAT_AUTOCMD
-    if (win->w_closing || (win->w_buffer != NULL && win->w_buffer->b_closing))
+    if (win->w_closing || (win->w_buffer != NULL
+					       && win->w_buffer->b_locked > 0))
 	return FAIL; /* window is already being closed */
     if (win == aucmd_win)
     {
@@ -2508,7 +2509,8 @@ win_close_othertab(win_T *win, int free_buf, tabpage_T *tp)
 #ifdef FEAT_AUTOCMD
     /* Get here with win->w_buffer == NULL when win_close() detects the tab
      * page changed. */
-    if (win->w_closing || (win->w_buffer != NULL && win->w_buffer->b_closing))
+    if (win->w_closing || (win->w_buffer != NULL
+					       && win->w_buffer->b_locked > 0))
 	return; /* window is already being closed */
 #endif