From 1272df7cb6db0603113cabd5eee126739bf81115 Mon Sep 17 00:00:00 2001
From: Akira Yumiyama <yumiyama.akira@gmail.com>
Date: Sun, 2 Jun 2013 12:03:45 +0900
Subject: fix IO#eof? method (consider the read buffer)

---
 mrblib/io.rb | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/mrblib/io.rb b/mrblib/io.rb
index 011f1dc21..990a4b92d 100644
--- a/mrblib/io.rb
+++ b/mrblib/io.rb
@@ -55,7 +55,8 @@ class IO
   end
 
   def eof?
-    # XXX: @buf のことを考えなくてよい？？
+    return true if @buf && @buf.size > 0
+
     ret = false
     char = ''
 
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