From d667008ae581d141c34fdb0a805307d518907391 Mon Sep 17 00:00:00 2001
From: Mari Imaizumi <mariimaizumi5@gmail.com>
Date: Sat, 30 Nov 2024 21:49:32 +0900
Subject: [PATCH] Prevent cursor flickering

---
 lib/irb/easter-egg.rb | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/lib/irb/easter-egg.rb b/lib/irb/easter-egg.rb
index bf8884838..07b6137be 100644
--- a/lib/irb/easter-egg.rb
+++ b/lib/irb/easter-egg.rb
@@ -125,6 +125,7 @@ def render_frame(i)
             canvas = Canvas.new(Reline.get_screen_size)
           end
           ruby_model = RubyModel.new
+          print "\e[?25l" # hide cursor
           0.step do |i| # TODO (0..).each needs Ruby 2.6 or later
             buff = canvas.draw do
               ruby_model.render_frame(i) do |p1, p2|
@@ -138,6 +139,7 @@ def render_frame(i)
           end
         rescue Interrupt
         ensure
+          print "\e[?25h" # show cursor
           trap("SIGINT", prev_trap)
         end
       end