Re: measure counter engraver

[David Kastrup]

David Nalesnik <address@hidden> writes:

> On Tue, Apr 24, 2012 at 12:41 AM, David Kastrup <address@hidden> wrote:
>     
>     Using define-event-class makes the file unfit for inclusion in
>     multi-file runs of LilyPond since define-event-class permanently
>     changes LilyPond.
>     
>
> I'm a little confused by the word "permanently".  Here I understand
> that the new event-class, measure-counter-event, will persist between
> the files if I run a group of files containing my file, but will be
> gone in a new session not involving that file.  Any problems which
> might result will only affect that multi-file run?

Basically every use of lilypond-book is a multi-file run.  So are our
regtests.

>     I am working on a replacement
>     <URL:http://code.google.com/p/lilypond/issues/detail?id=2449>, but
>     the pending patch is just one of several changes needed for
>     changing the event class hierarchy into a per-parser item instead
>     of a global entity.
>
>
> Thank you, David--I appreciate this very much.

I doubt that Erik Sandberg would appreciate it.  His idea of an
executable-independent event stream is moot if the stream event
hierarchy is session dependent.

-- 
David Kastrup