Re: Why does -dbackend=svg -dcrop remove system-system-spacing?

[David Wright]

On Sat 09 Jan 2021 at 07:31:19 (+0100), Werner LEMBERG wrote:
> >> $ lilypond-2.21.80-1.linux-64/bin/lilypond --svg -dcrop Bača.ly
> >> will produce the tightly packed:
> >> E   ┌──────────────┐
> >>     │▒▒▒▒▒▒▒▒▒▒▒▒▒▒│
> >>     │▒▒▒▒▒▒▒▒▒▒▒▒▒▒│
> >>     │▒▒▒▒▒▒▒▒▒▒▒▒▒▒│
> >>     └──────────────┘
> >> which is what you implied you didn't want (by saying "Is this
> >> supposed to happen?" and "Seems like cropping should be …").
> > 
> > This is clearly something that needs to be documented more clearly,
> > but also we may need to reconsider what -dcrop *should* be doing
> > rather than what is currently does.
> 
> For me, it's a bug, mainly because the behaviour is completely
> unexpected.  Also, `-dhelp` says
> 
>   crop (#f)                Match the size of the normal output to the
>                            typeset image.
> 
> which differs from the reality.  Note the words 'normal output'.
> Removing inter-line spacing between staves is definitely not normal
> output.

I'd missed that. I only looked at the Usage manual:

  crop bool    If bool is #t, fit all the music and headers, without
               margins, into a ‘single-page’ output file. Default: #f.

So I certainly agree that it needs clarification as to whether "music"
means *systems* or *made-up pages*.

Cheers,
David.