# HG changeset patch
# User Christian Brabandt <cb@256bit.org>
# Date 1518195607 -3600
# Node ID dc28351a85d4fea088a207db5d6e6e1fef40e2a3
# Parent  195671a4d06fde6ecd6e58d413a04307fd5ebd58
patch 8.0.1485: weird autocmd may cause arglist to be changed recursively

commit https://github.com/vim/vim/commit/9e33efd1523b85a70533930dd43a26925a2b648c
Author: Bram Moolenaar <Bram@vim.org>
Date:   Fri Feb 9 17:50:28 2018 +0100

    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)

diff --git a/src/ex_docmd.c b/src/ex_docmd.c
--- 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;
 }
 
 /*
diff --git a/src/globals.h b/src/globals.h
--- a/src/globals.h
+++ b/src/globals.h
@@ -1594,6 +1594,9 @@ EXTERN char_u e_notset[]	INIT(= N_("E764
 EXTERN char_u e_invalidreg[]    INIT(= N_("E850: Invalid register name"));
 #endif
 EXTERN char_u e_dirnotf[]	INIT(= N_("E919: Directory not found in '%s': \"%s\""));
+#ifdef FEAT_AUTOCMD
+EXTERN char_u e_au_recursive[]	INIT(= N_("E952: Autocommand caused recursive behavior"));
+#endif
 
 #ifdef FEAT_GUI_MAC
 EXTERN short disallow_gui	INIT(= FALSE);
diff --git a/src/version.c b/src/version.c
--- a/src/version.c
+++ b/src/version.c
@@ -772,6 +772,8 @@ static char *(features[]) =
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1485,
+/**/
     1484,
 /**/
     1483,