Re: Issue 1716 in lilypond: No convert-ly rule for the fix for issue1655

[Trevor Daniels]

> > So are you comfortable with a genera rule that says something 
> > like "If a
> > user knows enough to play around with internal properties, they 
> > know  enough to deal with the elimination of internal properties 
> > without us  giving them an indication"?
>
> I'd be perfectly happy with this rule.  The internal properties 
> are quite  well hidden in the IR, and in many cases it's not 
> really clear how they  might be useful without consulting the 
> source code.

Seems acceptable to me too.  Internal properties are not
intended to be user-serviceable, so fiddling with them is
equivalent to messing with the source code.  We don't
alert users to the elimination of a source code variable.

Trevor