Re: post-GDP doc team

[Neil Puttock]

Hi Trevor,

2008/8/5 Trevor Daniels <address@hidden>:
> Neil (or anyone else who knows)
>
> Here's my first question.  It concerns the 'layer property.  I'd assumed all
> objects were placed in layer 0 by default, and objects which were processed
> first were overwritten by objects processed later.  To check this I tried
> colouring bar lines white, and indeed found that they overwrote the staff
> lines unless I set the StaffSymbol layer to 1.  So far so good.  I placed
> this example in my local copy of the NR to demonstrate the overwriting:

The default layer is 1; BarLine and StaffSymbol are exceptions in that
they have 'layer set to 0 (along with a few other grobs like
LedgerLineSpanner and SpanBar).

> @lilypond[quote,verbatim,relative=2]
> a1 a
> \once \override Score.BarLine #'color = #white
> a a
> @end lilypond
>
> but then found that the staff lines in the NR are not reliably overwritten -
> sometimes they are, sometimes they are not.  I can't see any pattern in
> this.  So far the overwriting is always as expected if I compile this
> example separately to a pdf.  Any ideas?  Or are my initial assumptions not
> correct?

Hmm, that is rather strange; have you tried testing compilation with
BarLine #'layer = #1?

I'll try a test compilation myself to see what's going on.

Regards,
Neil