From ae616494d77e9930da703d65d12ac0abf6dc425f Mon Sep 17 00:00:00 2001
From: Bram Moolenaar <Bram@vim.org>
Date: Tue, 28 Jul 2020 20:07:27 +0200
Subject: patch 8.2.1308: Vim9: accidentally using "x" causes Vim to exit

Problem:    Vim9: accidentally using "x" causes Vim to exit.
Solution:   Disallow using ":x" or "xit" in Vim9 script. (closes #6399)
---
 src/ex_cmds.c | 6 ++++++
 1 file changed, 6 insertions(+)

(limited to 'src/ex_cmds.c')

diff --git a/src/ex_cmds.c b/src/ex_cmds.c
index e8e38aa97..895912f41 100644
--- a/src/ex_cmds.c
+++ b/src/ex_cmds.c
@@ -3176,6 +3176,9 @@ ex_append(exarg_T *eap)
     int		vcol;
     int		empty = (curbuf->b_ml.ml_flags & ML_EMPTY);
 
+    if (not_in_vim9(eap) == FAIL)
+	return;
+
     // the ! flag toggles autoindent
     if (eap->forceit)
 	curbuf->b_p_ai = !curbuf->b_p_ai;
@@ -3317,6 +3320,9 @@ ex_change(exarg_T *eap)
 {
     linenr_T	lnum;
 
+    if (not_in_vim9(eap) == FAIL)
+	return;
+
     if (eap->line2 >= eap->line1
 	    && u_save(eap->line1 - 1, eap->line2 + 1) == FAIL)
 	return;
-- 
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