From ab01b8f23f1e218fa5a360806120a1d6eaaa228f Mon Sep 17 00:00:00 2001
From: Nobuyoshi Nakada <nobu@ruby-lang.org>
Date: Mon, 7 Nov 2022 09:43:45 +0900
Subject: [PATCH] jobserver option may not be at the last

---
 tool/lib/test/unit.rb | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/tool/lib/test/unit.rb b/tool/lib/test/unit.rb
index 80d69dd38a..0449fa215a 100644
--- a/tool/lib/test/unit.rb
+++ b/tool/lib/test/unit.rb
@@ -286,9 +286,10 @@ module Test
         @jobserver = nil
         makeflags = ENV.delete("MAKEFLAGS")
         if !options[:parallel] and
-          /(?:\A|\s)--jobserver-(?:auth|fds)=(?:(\d+),(\d+)|fifo:(.*))/ =~ makeflags
+          /(?:\A|\s)--jobserver-(?:auth|fds)=(?:(\d+),(\d+)|fifo:((?:\\.|\S)+))/ =~ makeflags
           begin
             if fifo = $3
+              fifo.gsub!(/\\(?=.)/, '')
               r = File.open(fifo, IO::RDONLY|IO::NONBLOCK|IO::BINARY)
               w = File.open(fifo, IO::WRONLY|IO::NONBLOCK|IO::BINARY)
             else