Re: repeat bar at the beginning of a piece

[Steve Tarr]

> > Steve Tarr schrieb:
> > I'm working with 2.13.20, trying to reproduce a piece of shape-note 
> > music that has a 4-dot (with no line) repeat bar at the beginning of 
> > the piece.
> >
> > The snippet titled "Printing a repeat sign at the beginning of a 
> > piece" works as described if I use the "|:" bar, but doesn't display 
> > the bar if I use ":" (or any other bar style) instead.
> >
> > What's special about "|:" in this case?  Is there some property I can
> > override to allow arbitrary bar lines to be displayed at the beginning
> > of a piece?  Or is there something I can change so that ":" will be 
> > treated as a repeat bar just as "|:" is?

> Marc Hohl wrote:
> As a somewhat hackish solution, you can start the piece with an
> invisible grace note, like this:
>
> <snip>
>
> HTH,
> Marc

Thanks Marc.  That will work nicely for my case and it's simpler than 
the documented snippet.
I'm still curious, though, about why lilypond treats the two barlines 
differently.
It may be intentional, but what's controlling this behavior?

-Steve