From 56a72fe2b1e35acb0df4179ecc79c7873a6f5d49 Mon Sep 17 00:00:00 2001
From: Bo Anderson <mail@boanderson.me>
Date: Tue, 13 Apr 2021 17:41:35 +0100
Subject: [PATCH] debrew/irb: fix trap handling

---
 Library/Homebrew/debrew/irb.rb | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/Library/Homebrew/debrew/irb.rb b/Library/Homebrew/debrew/irb.rb
index 6c2d285c13..af3c358c9d 100644
--- a/Library/Homebrew/debrew/irb.rb
+++ b/Library/Homebrew/debrew/irb.rb
@@ -5,8 +5,6 @@ require "irb"
 
 # @private
 module IRB
-  def self.parse_opts(argv: nil); end
-
   def self.start_within(binding)
     unless @setup_done
       setup(nil, argv: [])
@@ -19,7 +17,7 @@ module IRB
     @CONF[:IRB_RC]&.call(irb.context)
     @CONF[:MAIN_CONTEXT] = irb.context
 
-    trap("SIGINT") do
+    prev_trap = trap("SIGINT") do
       irb.signal_handle
     end
 
@@ -28,6 +26,7 @@ module IRB
         irb.eval_input
       end
     ensure
+      trap("SIGINT", prev_trap)
       irb_at_exit
     end
   end