From e82c1d3f3829cd9057017a0848b9c101c4aab46a Mon Sep 17 00:00:00 2001
From: Tomoyuki Sahara <sahara@caddr.net>
Date: Wed, 17 Dec 2014 13:37:15 +0900
Subject: Revert "FIX: IO#read create a large number of objects."

---
 mrblib/io.rb | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/mrblib/io.rb b/mrblib/io.rb
index 51a395119..fceea1171 100644
--- a/mrblib/io.rb
+++ b/mrblib/io.rb
@@ -194,12 +194,12 @@ class IO
 
       if length && (str.size + @buf.size) >= length
         len = length - str.size
-        str << @buf[0, len]
+        str += @buf[0, len]
         @pos += len
         @buf = @buf[len, @buf.size - len]
         break
       else
-        str << @buf
+        str += @buf
         @pos += @buf.size
         @buf = ''
       end
@@ -238,18 +238,18 @@ class IO
 
       if limit && (str.size + @buf.size) >= limit
         len = limit - str.size
-        str << @buf[0, len]
+        str += @buf[0, len]
         @pos += len
         @buf = @buf[len, @buf.size - len]
         break
       elsif idx = @buf.index(rs)
         len = idx + rs.size
-        str << @buf[0, len]
+        str += @buf[0, len]
         @pos += len
         @buf = @buf[len, @buf.size - len]
         break
       else
-        str << @buf
+        str += @buf
         @pos += @buf.size
         @buf = ''
       end
-- 
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