# HG changeset patch
# User Bram Moolenaar <Bram@vim.org>
# Date 1635806704 -3600
# Node ID 0bb9004c993b3a6875c5123d5da591248f764da6
# Parent  40941a52ae54b91510487e9b36a1b9297ff540a8
patch 8.2.3569: error for :let when vimrc is Vim 9 script

Commit: https://github.com/vim/vim/commit/fd916d654d9731b3515abf7bc1ac12bd3632b601
Author: Christian Brabandt <cb@256bit.org>
Date:   Mon Nov 1 22:44:33 2021 +0000

    patch 8.2.3569: error for :let when vimrc is Vim 9 script

    Problem:    Error for :let when vimrc is Vim 9 script.
    Solution:   Prepend :legacy in the code for converting arguments. (Christian
                Brabandt, closes #9068, closes #9077)

diff --git a/src/os_win32.c b/src/os_win32.c
--- a/src/os_win32.c
+++ b/src/os_win32.c
@@ -7768,11 +7768,14 @@ fix_arg_enc(void)
 	// Also, unset wildignore to not be influenced by this option.
 	// The arguments specified in command-line should be kept even if
 	// encoding options were changed.
-	do_cmdline_cmd((char_u *)":let SaVe_ISF = &isf|set isf+=(,)");
-	do_cmdline_cmd((char_u *)":let SaVe_WIG = &wig|set wig=");
+	// Use :legacy so that it also works when in Vim9 script.
+	do_cmdline_cmd((char_u *)":legacy let g:SaVe_ISF = &isf|set isf+=(,)");
+	do_cmdline_cmd((char_u *)":legacy let g:SaVe_WIG = &wig|set wig=");
 	alist_expand(fnum_list, used_alist_count);
-	do_cmdline_cmd((char_u *)":let &isf = SaVe_ISF|unlet SaVe_ISF");
-	do_cmdline_cmd((char_u *)":let &wig = SaVe_WIG|unlet SaVe_WIG");
+	do_cmdline_cmd(
+		(char_u *)":legacy let &isf = g:SaVe_ISF|unlet g:SaVe_ISF");
+	do_cmdline_cmd(
+		(char_u *)":legacy let &wig = g:SaVe_WIG|unlet g:SaVe_WIG");
     }
 
     // If wildcard expansion failed, we are editing the first file of the
diff --git a/src/version.c b/src/version.c
--- a/src/version.c
+++ b/src/version.c
@@ -758,6 +758,8 @@ static char *(features[]) =
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    3569,
+/**/
     3568,
 /**/
     3567,