From 9e33efd1523b85a70533930dd43a26925a2b648c Mon Sep 17 00:00:00 2001
From: Bram Moolenaar <Bram@vim.org>
Date: Fri, 9 Feb 2018 17:50:28 +0100
Subject: patch 8.0.1485: weird autocmd may cause arglist to be changed
 recursively

Problem:    Weird autocmd may cause arglist to be changed recursively.
Solution:   Prevent recursively changing the argument list. (Christian
            Brabandt, closes #2472)
---
 src/ex_docmd.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)

(limited to 'src/ex_docmd.c')

diff --git a/src/ex_docmd.c b/src/ex_docmd.c
index cd915c9da..591775f4c 100644
--- a/src/ex_docmd.c
+++ b/src/ex_docmd.c
@@ -8058,6 +8058,16 @@ alist_set(
     int		fnum_len)
 {
     int		i;
+    static int  recursive = 0;
+
+    if (recursive)
+    {
+#ifdef FEAT_AUTOCMD
+	EMSG(_(e_au_recursive));
+#endif
+	return;
+    }
+    ++recursive;
 
     alist_clear(al);
     if (ga_grow(&al->al_ga, count) == OK)
@@ -8087,6 +8097,8 @@ alist_set(
 	FreeWild(count, files);
     if (al == &global_alist)
 	arg_had_last = FALSE;
+
+    --recursive;
 }
 
 /*
-- 
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