[PATCH 4/6] sync_close: This fix breakage from Ruby-trunk r50118

[Eric Wong <e@80x24.org>]

By providing read+readpartial methods

IO.copy_stream behaves slightly differently when operating on
non-IO-subclassed objects nowadays.

Ref:
> * io.c (copy_stream_body): use the arguments without conversion if
>   having read, readpartial, and write methods, than conversion by
>   to_path method.  [ruby-core:68676] [Bug #11015]
---
 lib/rainbows/sync_close.rb | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/lib/rainbows/sync_close.rb b/lib/rainbows/sync_close.rb
index 75f119e..8738cae 100644
--- a/lib/rainbows/sync_close.rb
+++ b/lib/rainbows/sync_close.rb
@@ -16,6 +16,14 @@ class Rainbows::SyncClose
     @body.respond_to?(m)
   end
 
+  def readpartial(*args)
+    @body.readpartial(*args)
+  end
+
+  def read(*args)
+    @body.read(*args)
+  end
+
   def to_path
     @body.to_path
   end
@@ -31,7 +39,7 @@ class Rainbows::SyncClose
   # called by the writer thread to wake up the original thread (in #initialize)
   def close
     @body.close
-    ensure
-      @mutex.synchronize { @cv.signal }
+  ensure
+    @mutex.synchronize { @cv.signal }
   end
 end
-- 
EW