From 9ac9d23f4164fc7e1eeea8a3e8d4e453dade51ab Mon Sep 17 00:00:00 2001
From: Roberto Ierusalimschy <roberto@inf.puc-rio.br>
Date: Wed, 27 Aug 2025 14:55:35 -0300
Subject: Bug: error with option '--' without a script

---
 lua.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

(limited to 'lua.c')

diff --git a/lua.c b/lua.c
index 4a90e55d..8055b70f 100644
--- a/lua.c
+++ b/lua.c
@@ -302,7 +302,8 @@ static int collectargs (char **argv, int *first) {
       case '-':  /* '--' */
         if (argv[i][2] != '\0')  /* extra characters after '--'? */
           return has_error;  /* invalid option */
-        *first = i + 1;
+        /* if there is a script name, it comes after '--' */
+        *first = (argv[i + 1] != NULL) ? i + 1 : 0;
         return args;
       case '\0':  /* '-' */
         return args;  /* script "name" is '-' */
-- 
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