commit 0e1574c4069ded47c170fcd7a47a0df66693a5f4
author Bram Moolenaar <Bram@vim.org> Thu Mar 03 17:05:35 2022 +0000
committer Bram Moolenaar <Bram@vim.org> Thu Mar 03 17:05:35 2022 +0000
tree f266c5d17984eca34d287a3f04bc6584a425bafe
parent 28bf649a5732ffe5a47951b5e437b765cebc5b38

patch 8.2.4500: Vim9: can declare a global variable on the command line

Problem:    Vim9: can declare a global variable on the command line.
Solution:   Disallow declaring a variable on the command line. (closes #9881)

src/evalvars.c

diff --git a/src/evalvars.c b/src/evalvars.c
index eb69d3e..260c297 100644
--- a/src/evalvars.c
+++ b/src/evalvars.c
@@ -759,6 +759,11 @@
 	semsg(_(e_str_cannot_be_used_in_legacy_vim_script), ":var");
 	return;
     }
+    if (current_sctx.sc_sid == 0)
+    {
+	emsg(_(e_cannot_declare_variable_on_command_line));
+	return;
+    }
     ex_let(eap);
 }
 
@@ -3440,7 +3445,7 @@
 	if (in_vim9script() && is_export
 		&& SCRIPT_ID_VALID(current_sctx.sc_sid)
 		&& (si = SCRIPT_ITEM(current_sctx.sc_sid))
-						   ->sn_autoload_prefix != NULL)
+						  ->sn_autoload_prefix != NULL)
 	{
 	    // In a vim9 autoload script an exported variable is put in the
 	    // global namespace with the autoload prefix.