Re: Add an example implementation of cross-staff stems (issue 5882053)

[graham]

The basic question is this: is this test helpful for programmers?  At
first glance I'd say that it is, provided that you update the syntax as
David suggested.

IMO it takes a pretty silly example for something to *not* be a helpful
test case.  Sure, having complicated scheme here might mean that future
changes to some scheme interfaces would need to update this file as
well, but IMO that's a perfectly legitimate function of a regtest!

Now, this test might be useful as a LSR snippet as well, so you may want
to consider sending it there (at least once LSR supports 2.16).  Until
that happens, it could got to Documentation/snippets/new, but I
recommend asking James or Phil to handle that part of it.

http://codereview.appspot.com/5882053/