https://git.ruby-lang.org/ruby.git/commit/?id=f863ed5210

From f863ed5210084e33545e3b1c620c2b83e2d7a1f8 Mon Sep 17 00:00:00 2001
From: aycabta <aycabta@g...>
Date: Tue, 24 Aug 2021 21:31:04 +0900
Subject: [ruby/reline] Drop too much contents before processing

https://github.com/ruby/reline/commit/94f7027edc
---
 lib/reline/line_editor.rb | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/reline/line_editor.rb b/lib/reline/line_editor.rb
index ffd5b9c..5976e09 100644
--- a/lib/reline/line_editor.rb
+++ b/lib/reline/line_editor.rb
@@ -541,6 +541,7 @@ class Reline::LineEditor https://github.com/ruby/ruby/blob/trunk/lib/reline/line_editor.rb#L541
     old_dialog_updown = @dialog_updown
     if result and not result.empty?
       @dialog_contents = result
+      @dialog_contents = @dialog_contents[0...DIALOG_HEIGHT] if @dialog_contents.size > DIALOG_HEIGHT
       @dialog_contents_width = @dialog_contents.map{ |c| calculate_width(c) }
     else
       clear_dialog
@@ -577,7 +578,6 @@ class Reline::LineEditor https://github.com/ruby/ruby/blob/trunk/lib/reline/line_editor.rb#L578
     when :up
     end
     Reline::IOGate.move_cursor_column(@dialog_column)
-    @dialog_contents = @dialog_contents[0...DIALOG_HEIGHT] if @dialog_contents.size > DIALOG_HEIGHT
     @dialog_contents.each_with_index do |item, i|
       @output.write "\e[46m%-#{DIALOG_WIDTH}s\e[49m" % item.slice(0, DIALOG_WIDTH)
       Reline::IOGate.move_cursor_column(@dialog_column)
-- 
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