mongoid/mongoid — pull request #2770 by dblock (2013-02-01 00:19:35+00:00)
Title: (Unlikely) Fix #2769: use a positional operator for inserting L1 embedded documents.

This does pass all the specs, but the implementation feels very wrong. It should be in something like `Mongoid::Atomic::Paths::Embedded`, but I failed to find another place to insert similar path-like behavior for an insert.

Curious to see what the proper fix would be.