From e61b3e6f43434bd815577a67d4f1719091b57d5c Mon Sep 17 00:00:00 2001
From: Patrick Plenefisch <simonpatp@gmail.com>
Date: Fri, 30 Sep 2022 14:26:46 -0400
Subject: [PATCH] [ruby/irb] Fix https://github.com/ruby/irb/pull/295: Ignore
 Java package reference objects in JRuby

https://github.com/ruby/irb/commit/84d030182d
---
 lib/irb/completion.rb | 1 +
 1 file changed, 1 insertion(+)

diff --git a/lib/irb/completion.rb b/lib/irb/completion.rb
index b41d5de35e..34640e17f9 100644
--- a/lib/irb/completion.rb
+++ b/lib/irb/completion.rb
@@ -361,6 +361,7 @@ module IRB
           to_ignore = ignored_modules
           ObjectSpace.each_object(Module){|m|
             next if (to_ignore.include?(m) rescue true)
+            next unless m.respond_to?(:instance_methods) # JRuby has modules that represent java packages. They don't include many common ruby methods
             candidates.concat m.instance_methods(false).collect{|x| x.to_s}
           }
           candidates.sort!