From 03523fdafb320d53cc455065a25079a9e3a93707 Mon Sep 17 00:00:00 2001
From: aycabta <aycabta@gmail.com>
Date: Fri, 29 Jan 2021 18:27:54 +0900
Subject: [PATCH] [ruby/reline] Scroll down when ^C is pressed

https://github.com/ruby/reline/commit/6877a7e3f5
---
 lib/reline/line_editor.rb | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/lib/reline/line_editor.rb b/lib/reline/line_editor.rb
index 4a635031a3..1017dc6cc9 100644
--- a/lib/reline/line_editor.rb
+++ b/lib/reline/line_editor.rb
@@ -150,6 +150,13 @@ class Reline::LineEditor
     @screen_height = @screen_size.first
     reset_variables(prompt, encoding: encoding)
     @old_trap = Signal.trap('SIGINT') {
+      if @scroll_partial_screen
+        move_cursor_down(@screen_height - (@line_index - @scroll_partial_screen) - 1)
+      else
+        move_cursor_down(@highest_in_all - @line_index - 1)
+      end
+      Reline::IOGate.move_cursor_column(0)
+      scroll_down(1)
       @old_trap.call if @old_trap.respond_to?(:call) # can also be string, ex: "DEFAULT"
       raise Interrupt
     }
@@ -420,6 +427,7 @@ class Reline::LineEditor
         end
       end
       @buffer_of_lines[@line_index] = @line
+      @rest_height = 0 if @scroll_partial_screen
     else
       line = modify_lines(whole_lines)[@line_index]
       render_partial(prompt, prompt_width, line, 0)