Re: Set indent based on instrument name (issue 6457049)

[Phil Holmes]

----- Original Message ----- 
From: "David Kastrup" <address@hidden>
To: <address@hidden>
Sent: Tuesday, July 31, 2012 12:50 PM
Subject: Re: Set indent based on instrument name (issue 6457049)


> "Phil Holmes" <address@hidden> writes:
>
> > ----- Original Message ----- 
> > From: "David Kastrup" <address@hidden>
> > To: <address@hidden>
> > Sent: Tuesday, July 31, 2012 12:04 PM
> > Subject: Re: Set indent based on instrument name (issue 6457049)
> >
> >
> > > "Phil Holmes" <address@hidden> writes:
> > >
> > > > I'd be happy to change it if someone could suggest an improvement.
> > > > When I initially asked how this could be done, Keith said:
> > > >
> > > > "Maybe each Instrument_name_engraver, one for each staff, could push
> > > > information to a central location"
> > > >
> > > > which does sound rather like a global variable.
> > >
> > > More like a Score-level context property.  And/or a grob announced on an
> > > interface that an engraver at Score level listens to.
> > >
> > > --
> > > David Kastrup
> >
> > Whoosh.  Straight over my head...
>
> It may be worth asking on the user list.  That's the sort of thing
> Thomas Morley and David Nalesnik are constantly cranking out in Scheme.
>
> > Question is - is it OK to modify my code to use statics,
>
> No.  Even engravers at score level are running in parallel, like when
> using a \score markup or using the part combiner or quoting music and so
> on.  Static variables just don't work in this setting.

I'm sure that's not a problem here - the instrument name engraver finishes 
its work before the output-def indent code is called at all, so the name 
engraver "corrects" the indent before it's ever used.

> > or should I bother you with trying to understand what this means and
> > how to do it?
>
> Since Keith were making the suggestions, he would know better what he
> was envisioning here.

Don't think he's around at present - modem problems.

--
Phil Holmes