On 8 August 2011 12:43, David Kastrup <[email protected]> wrote:
> I have no clue what start and end are
start and end are column ranks, i.e., an index to the position of a
particular column in a score. You can see them if you enable
debugging for columns:
\relative c' {
c1
}
\layout {
\context {
\Score
\override PaperColumn #'stencil = #ly:paper-column::print
\override NonMusicalPaperColumn #'stencil = #ly:paper-column::print
}
}
> and I have no clue what pure is.
https://secure.wikimedia.org/wikipedia/en/wiki/Pure_function
> But get_pure_property takes start and end as additional arguments over
> get_property, and so does pure_is_visible.
>
> So from a mere text-matching hand-waving likelihood point of view, the
> above change seems plausible.
>
> Is there anybody that could shed light on this?
The only effect I can see is that break-visiibility won't be cached.
There are no pure break-visibility callbacks so the start/end args
will never be applied.
Cheers,
Neil
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