https://git.ruby-lang.org/ruby.git/commit/?id=9d900620ca

From 9d900620cafc379f527ee04a338f3a7f5daf6962 Mon Sep 17 00:00:00 2001
From: Nobuyoshi Nakada <nobu@r...>
Date: Wed, 13 Jul 2022 23:50:02 +0900
Subject: Set `GEM_PATH` environment variable in runruby.rb

---
 tool/runruby.rb | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/tool/runruby.rb b/tool/runruby.rb
index bff5d031cc..d9a4c855d3 100755
--- a/tool/runruby.rb
+++ b/tool/runruby.rb
@@ -122,6 +122,12 @@ if e = ENV["RUBYLIB"] https://github.com/ruby/ruby/blob/trunk/tool/runruby.rb#L122
 end
 env["RUBYLIB"] = $:.replace(libs).join(File::PATH_SEPARATOR)
 
+gem_path = [abs_archdir, srcdir].map {|d| File.realdirpath(".bundle", d)}
+if e = ENV["GEM_PATH"]
+ gem_path |= e.split(File::PATH_SEPARATOR)
+end
+env["GEM_PATH"] = gem_path.join(File::PATH_SEPARATOR)
+
 libruby_so = File.join(abs_archdir, config['LIBRUBY_SO'])
 if File.file?(libruby_so)
   if e = config['LIBPATHENV'] and !e.empty?
-- 
cgit v1.2.1


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