From f486ee340289b779654fe2d6c1de5a348fd76d86 Mon Sep 17 00:00:00 2001
From: Nobuyoshi Nakada <nobu@ruby-lang.org>
Date: Tue, 10 Feb 2026 08:17:06 +0900
Subject: [Feature #21872] Search script from $PATH only if no separator

---
 ruby.c | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

(limited to 'ruby.c')

diff --git a/ruby.c b/ruby.c
index cd5c8d1d15..3d53610c24 100644
--- a/ruby.c
+++ b/ruby.c
@@ -2301,6 +2301,16 @@ process_options_global_setup(const ruby_cmdline_options_t *opt, const rb_iseq_t
     rb_exec_event_hook_script_compiled(ec, iseq, script);
 }
 
+static bool
+has_dir_sep(const char *path)
+{
+    if (strchr(path, '/')) return true;
+#ifdef _WIN32
+    if (strchr(path, '\\')) return true;
+#endif
+    return false;
+}
+
 static VALUE
 process_options(int argc, char **argv, ruby_cmdline_options_t *opt)
 {
@@ -2406,7 +2416,7 @@ process_options(int argc, char **argv, ruby_cmdline_options_t *opt)
             if (!opt->script || opt->script[0] == '\0') {
                 opt->script = "-";
             }
-            else if (opt->do_search) {
+            else if (opt->do_search && !has_dir_sep(opt->script)) {
                 const char *path = getenv("RUBYPATH");
 
                 opt->script = 0;
-- 
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