From a0b7580dc47ddcbbb9708980d131bfc2171926ce Mon Sep 17 00:00:00 2001
From: nandahkrishna <nanda.harishankar@gmail.com>
Date: Wed, 17 Feb 2021 01:18:25 +0530
Subject: [PATCH] Fix eql? in Cask::Cask

---
 Library/Homebrew/cask/cask.rb | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Library/Homebrew/cask/cask.rb b/Library/Homebrew/cask/cask.rb
index 2475b84da0..caf666397c 100644
--- a/Library/Homebrew/cask/cask.rb
+++ b/Library/Homebrew/cask/cask.rb
@@ -162,7 +162,7 @@ module Cask
     end
 
     def eql?(other)
-      token == other.token
+      instance_of?(other.class) && token == other.token
     end
     alias == eql?