gistfile1.txt

$ git log -S"to_generator"
commit 1b8941fc2448d5cd34f853288d746faf61185674
Author: Brian Shirai <brixen@gmail.com>
Date:   Mon Jun 13 10:11:24 2016 -0700

    A bit of Enumerator cleanup.

commit d32213f3841de4c1603317cff40afa892cbf3e50
Author: Brian Shirai <brixen@gmail.com>
Date:   Wed Sep 18 23:07:37 2013 -0700

    Merged 2.1 kernel files into regular files.

commit c1c4a0a71757119dfae3e963094cfdaa105f4afc
Author: Brian Shirai <brixen@gmail.com>
Date:   Tue Sep 17 17:47:51 2013 -0700

    Removed 1.8 from kernel.

commit b268761bd526afe09f258c359e834111a009e9eb
Author: Brian Shirai <brixen@gmail.com>
Date:   Tue Aug 13 16:41:16 2013 -0700

    Migrated missing Enumerator code from 1.9.

commit 64a4804b985d8fe3586f9cf73cccf2d6bcefbbd4
Author: Dirkjan Bussink <d.bussink@gmail.com>
Date:   Sun Jul 21 12:29:42 2013 +0200

    Remove unused ValueGenerator from Array

commit f256fdad5f5d2acff6fe3dacfd7117bc4d16d6ba
Author: John Downey <jdowney@gmail.com>
Date:   Sun Oct 23 08:43:13 2011 -0400

    Implemented Enumerator#peek for 1.9

commit 9727e0875038a09dc9df548def5fd21c75922106
Author: Evan Phoenix <ephoenix@engineyard.com>
Date:   Mon Oct 4 13:43:46 2010 -0700

    Add support for Enumerator#next using Threads and Fibers