patch 8.1.1425: win_execute() does not set window pointers properly

Problem:    Win_execute() does not set window pointers properly.
Solution:   Use switch_win_noblock().  Also execute autocommands in a popup
            window.

src/autocmd.c

@@ -1349,7 +1349,7 @@ ex_doautoall(exarg_T *eap)
      */
     FOR_ALL_BUFFERS(buf)
     {
-	if (buf->b_ml.ml_mfp != NULL && !bt_popup(buf))
+	if (buf->b_ml.ml_mfp != NULL)
 	{
 	    // find a window for this buffer and save some values
 	    aucmd_prepbuf(&aco, buf);
@@ -1612,8 +1612,6 @@ apply_autocmds(
     int		force,	    // when TRUE, ignore autocmd_busy
     buf_T	*buf)	    // buffer for <abuf>
 {
-    if (bt_popup(buf))
-	return FALSE;
     return apply_autocmds_group(event, fname, fname_io, force,
 						      AUGROUP_ALL, buf, NULL);
 }

src/evalfunc.c

@@ -6116,19 +6116,18 @@ f_win_execute(typval_T *argvars, typval_T *rettv)
 {
     int		id = (int)tv_get_number(argvars);
     win_T	*wp = win_id2wp(id);
-    win_T	*save_curwin = curwin;
+    win_T	*save_curwin;
+    tabpage_T	*save_curtab;
 
     if (wp != NULL)
     {
-	curwin = wp;
+	if (switch_win_noblock(&save_curwin, &save_curtab, wp, curtab, TRUE)
-	curbuf = curwin->w_buffer;
+									 == OK)
-	check_cursor();
-	execute_common(argvars, rettv, 1);
-	if (win_valid(save_curwin))
 	{
-	    curwin = save_curwin;
+	    check_cursor();
-	    curbuf = curwin->w_buffer;
+	    execute_common(argvars, rettv, 1);
 	}
+	restore_win_noblock(save_curwin, save_curtab, TRUE);
     }
 }
 

src/proto/window.pro

@@ -77,7 +77,9 @@ void reset_lnums(void);
 void make_snapshot(int idx);
 void restore_snapshot(int idx, int close_curwin);
 int switch_win(win_T **save_curwin, tabpage_T **save_curtab, win_T *win, tabpage_T *tp, int no_display);
+int switch_win_noblock(win_T **save_curwin, tabpage_T **save_curtab, win_T *win, tabpage_T *tp, int no_display);
 void restore_win(win_T *save_curwin, tabpage_T *save_curtab, int no_display);
+void restore_win_noblock(win_T *save_curwin, tabpage_T *save_curtab, int no_display);
 void switch_buffer(bufref_T *save_curbuf, buf_T *buf);
 void restore_buffer(bufref_T *save_curbuf);
 int win_hasvertsplit(void);

src/version.c

@@ -767,6 +767,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1425,
 /**/
     1424,
 /**/

src/window.c

@@ -6495,6 +6495,20 @@ switch_win(
     int		no_display)
 {
     block_autocmds();
+    return switch_win_noblock(save_curwin, save_curtab, win, tp, no_display);
+}
+
+/*
+ * As switch_win() but without blocking autocommands.
+ */
+    int
+switch_win_noblock(
+    win_T	**save_curwin,
+    tabpage_T	**save_curtab,
+    win_T	*win,
+    tabpage_T	*tp,
+    int		no_display)
+{
     *save_curwin = curwin;
     if (tp != NULL)
     {
@@ -6524,9 +6538,22 @@ switch_win(
  */
     void
 restore_win(
-    win_T	*save_curwin UNUSED,
+    win_T	*save_curwin,
-    tabpage_T	*save_curtab UNUSED,
+    tabpage_T	*save_curtab,
-    int		no_display UNUSED)
+    int		no_display)
+{
+    restore_win_noblock(save_curwin, save_curtab, no_display);
+    unblock_autocmds();
+}
+
+/*
+ * As restore_win() but without unblocking autocommands.
+ */
+    void
+restore_win_noblock(
+    win_T	*save_curwin,
+    tabpage_T	*save_curtab,
+    int		no_display)
 {
     if (save_curtab != NULL && valid_tabpage(save_curtab))
     {
@@ -6546,7 +6573,6 @@ restore_win(
 	curwin = save_curwin;
 	curbuf = curwin->w_buffer;
     }
-    unblock_autocmds();
 }
 
 /*