From fd956c72eaeb07d26d61310a9e4b55b500237c02 Mon Sep 17 00:00:00 2001
From: aycabta <aycabta@gmail.com>
Date: Mon, 25 Nov 2019 07:27:15 +0900
Subject: [PATCH] Cache loaded module to suppress method redefined warnings

---
 lib/irb/locale.rb | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/lib/irb/locale.rb b/lib/irb/locale.rb
index b713f50e76..ba833eced4 100644
--- a/lib/irb/locale.rb
+++ b/lib/irb/locale.rb
@@ -21,6 +21,7 @@ module IRB # :nodoc:
     LOCALE_DIR = "/lc/"
 
     @@legacy_encoding_alias_map = {}.freeze
+    @@loaded = []
 
     def initialize(locale = nil)
       @lang = @territory = @encoding_name = @modifier = nil
@@ -107,7 +108,10 @@ module IRB # :nodoc:
     def load(file, priv=nil)
       found = find(file)
       if found
-        return real_load(found, priv)
+        unless @@loaded.include?(found)
+          @@loaded << found # cache
+          return real_load(found, priv)
+        end
       else
         raise LoadError, "No such file to load -- #{file}"
       end