From 9cb7ba2f21aac6356089de949ef59ca42974b24b Mon Sep 17 00:00:00 2001
From: aycabta <aycabta@gmail.com>
Date: Sat, 9 Oct 2021 22:20:26 +0900
Subject: [PATCH] [ruby/reline] Add RELINE_ALT_SCROLLBAR env to use alternative
 text for scrollbar

The setting to use '::' instead of block elements.

https://github.com/ruby/reline/commit/4afbc98e2c
---
 lib/reline/line_editor.rb | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/lib/reline/line_editor.rb b/lib/reline/line_editor.rb
index a71bb65259..f6facc9da8 100644
--- a/lib/reline/line_editor.rb
+++ b/lib/reline/line_editor.rb
@@ -181,7 +181,12 @@ class Reline::LineEditor
     Reline::IOGate.set_winch_handler do
       @resized = true
     end
-    if Reline::IOGate.win?
+    if ENV.key?('RELINE_ALT_SCROLLBAR')
+      @full_block = '::'
+      @upper_half_block = "''"
+      @lower_half_block = '..'
+      @block_elem_width = 2
+    elsif Reline::IOGate.win?
       @full_block = '█'
       @upper_half_block = '▀'
       @lower_half_block = '▄'