Re: Fix 1248 (issue3416045)

[n . puttock]

LGTM.

BTW, while looking into this, I was a bit puzzled by the behaviour of
the identifier inside the \book block: it isn't a \bookpart unless it's
encapsulated in another \bookpart block since the parser makes no
distinction between \book and \bookpart identifiers: the regtest snippet
is functionally equivalent to the following:

mypart = \book {
 \relative c' {
 c1
 }
}

\book {
 \mypart
}

http://codereview.appspot.com/3416045/