From: Eric Hodel <drbrain@...7.net>
Date: 2011-02-03T10:33:59+09:00
Subject: Re: Zlib::GzipReader and multiple compressed blobs in a single stream

On Jan 28, 2011, at 15:09, Jos Backus wrote:
> I'm trying to inflate a set of concatenated gzipped blobs stored in a single
> file. As it stands, Zlib::GzipReader only inflates the first blob. It
> appears that the unused instance method would return the remaining data,
> ready to be passed into Zlib::GzipReader, but it yields an error:
> 
> method `method_missing' called on hidden T_STRING object
> 
> What could be going on here?

It's a bug, the internal buffer that libz uses is dup'd, but this is not enough to make it safe for use by ruby.  I have filed a ticket and attached a stupid patch:

http://redmine.ruby-lang.org/issues/show/4360