From 1fe604a67501d5f05694266d065833e3c150d79a Mon Sep 17 00:00:00 2001
From: aycabta <aycabta@gmail.com>
Date: Mon, 6 Sep 2021 05:19:50 +0900
Subject: [PATCH] [ruby/reline] Add comments about optimizing chars in ASCII
 range of UTF-8

https://github.com/ruby/reline/commit/3c13d93486
---
 lib/reline/unicode.rb | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/lib/reline/unicode.rb b/lib/reline/unicode.rb
index d111a849c4..a0fe0741f4 100644
--- a/lib/reline/unicode.rb
+++ b/lib/reline/unicode.rb
@@ -101,9 +101,9 @@ class Reline::Unicode
 
   def self.get_mbchar_width(mbchar)
     ord = mbchar.ord
-    if (0x00 <= ord and ord <= 0x1F)
+    if (0x00 <= ord and ord <= 0x1F) # in EscapedPairs
       return 2
-    elsif (0x20 <= ord and ord <= 0x7E)
+    elsif (0x20 <= ord and ord <= 0x7E) # printable ASCII chars
       return 1
     end
     m = mbchar.encode(Encoding::UTF_8).match(MBCharWidthRE)