From b87268f130c4a29f4be4172409dbe12cddb4e2f9 Mon Sep 17 00:00:00 2001
From: "Yukihiro \"Matz\" Matsumoto" <matz@ruby.or.jp>
Date: Tue, 28 Apr 2020 13:18:43 +0900
Subject: Fix `IO#readchar` to support UTF-8 char reading; fix #4712

This fix only effective when `MRB_UTF8_STRING` is set.
---
 mrbgems/mruby-io/mrblib/io.rb | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

(limited to 'mrbgems/mruby-io/mrblib')

diff --git a/mrbgems/mruby-io/mrblib/io.rb b/mrbgems/mruby-io/mrblib/io.rb
index ce33f2367..e43b81004 100644
--- a/mrbgems/mruby-io/mrblib/io.rb
+++ b/mrbgems/mruby-io/mrblib/io.rb
@@ -283,9 +283,10 @@ class IO
 
   def readchar
     _read_buf
-    c = @buf[0]
-    @buf[0] = ""
-    c
+    _readchar(@buf)
+#    c = @buf[0]
+#    @buf[0] = ""
+#    c
   end
 
   def getc
-- 
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