From 481e10160f4810dc7731922b3a98461deb1dcbed Mon Sep 17 00:00:00 2001
From: Viktor Szakats <commit@vsz.me>
Date: Wed, 24 Jun 2026 17:04:03 +0200
Subject: [PATCH] runtests: restore `-k` option and actively process as no-op

Restore processing this option to avoid falling it through and
misinterpreted as something else, which in turn disables tests.

Exit with an error instead. We delete completely in December 2026.

Reported-by: Sam James
Bug: https://github.com/curl/curl/pull/22100#issuecomment-4789828929
Follow-up to 04305a3e40989d3731e97bd0ef41bbd55c680a3f #22100
Follow-up to 6617db6a7ed322d28322896aa20bcabf3a479e7c #4035

Closes #22157
---
 tests/runtests.pl | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/tests/runtests.pl b/tests/runtests.pl
index 61949614b9..a326fc37b6 100755
--- a/tests/runtests.pl
+++ b/tests/runtests.pl
@@ -2539,6 +2539,10 @@ while(@ARGV) {
             $jobs = $1;
         }
     }
+    elsif($ARGV[0] eq "-k") {  # delete this check after December 2026
+        print "Option -k became always-on in 7.65.2 (2019) and now a no-op. Delete it to continue.\n";
+        exit;
+    }
     elsif($ARGV[0] eq "-r") {
         # run time statistics needs Time::HiRes
         if($Time::HiRes::VERSION) {