Prevent cursor flickering (#1041)

ruby · Nov 30, 2024 · 0506ed0 · 0506ed0
1 parent 4217a46
commit 0506ed0
Showing 1 changed file with 2 additions and 0 deletions.
diff --git 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