Snippet broken in 2.17.14

[Phil Holmes]

The snippet 
http://lilypond.org/doc/v2.17/Documentation/snippets/contexts-and-engravers#contexts-and-engravers-engravers-one_002dby_002done 
no longer produces sensible output.  It was broken by 
http://code.google.com/p/lilypond/issues/detail?id=3225

See attached images from current unstable docs and stable docs.

I'm not sure whether this a bug in the snippet or the enhancement.

--
Phil Holmes

Engravers2.16.0.png
Description: PNG image

Engravers2.17.15.png
Description: PNG image