From d10afe03575446fa8d561fdc21ca3bed90df6e94 Mon Sep 17 00:00:00 2001
From: Go <monkeywzr@gmail.com>
Date: Fri, 15 Mar 2024 00:40:59 +0900
Subject: [PATCH] [ruby/irb] Rescue from exceptions raised by #name
 (https://github.com/ruby/irb/pull/899)

* Rescue from exceptions raised by #name

Irb might terminate if the class overwrites `name` and raise errors. This commit rescue irb from termination.

* fix for other unknown patterns

https://github.com/ruby/irb/commit/35b87cf893
---
 lib/irb/completion.rb | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/lib/irb/completion.rb b/lib/irb/completion.rb
index ceb6eb087a1c56..b3813e89391d22 100644
--- a/lib/irb/completion.rb
+++ b/lib/irb/completion.rb
@@ -388,7 +388,7 @@ def retrieve_completion_data(input, bind:, doc_namespace:)
 
         if doc_namespace
           rec_class = rec.is_a?(Module) ? rec : rec.class
-          "#{rec_class.name}#{sep}#{candidates.find{ |i| i == message }}"
+          "#{rec_class.name}#{sep}#{candidates.find{ |i| i == message }}" rescue nil
         else
           select_message(receiver, message, candidates, sep)
         end
@@ -418,7 +418,7 @@ def retrieve_completion_data(input, bind:, doc_namespace:)
           vars = (bind.local_variables | bind.eval_instance_variables).collect{|m| m.to_s}
           perfect_match_var = vars.find{|m| m.to_s == input}
           if perfect_match_var
-            eval("#{perfect_match_var}.class.name", bind)
+            eval("#{perfect_match_var}.class.name", bind) rescue nil
           else
             candidates = (bind.eval_methods | bind.eval_private_methods | bind.local_variables | bind.eval_instance_variables | bind.eval_class_constants).collect{|m| m.to_s}
             candidates |= ReservedWords