Re: Minimum GS version

[Luca Fascione]

I'm using the same options that gv uses, nosafer and all, and gv displays
the file just fine. I've not fiddled with it enough to make gs
DRIVER=display work, because WSL2 and that driver don't seem to be on good
terms. But I'll spend some time on that today.
Because I'm still experimenting with things, I'd rather have under control
how to go from a vector representation to a raster (I'dlike to
investigatethe effects of resolution and AA settings, for example), can I
use Cairo in pdf mode?

On Sun, 29 Sept 2024, 09:26 Han-Wen Nienhuys, <hanwenn@gmail.com> wrote:

> The EPS files have some tricks to keep sizes small (load font files
> directly from the FS), which requires -dNOSAFER, and makes them more
> fiddly.
>
> If you are trying to get up to speed with regression testing, you
> could try running the whole thing (baseline and test) with
> -dbackend=cairo which produces PNG files directly.
>
> On Sun, Sep 29, 2024 at 12:08 AM Luca Fascione <l.fascione@gmail.com>
> wrote:
> >
> > Hi,
> > I'm trying to convert this file
> > $build/input/regression/out-test/tuplet-number-shift-along-kneed-beam.eps
> > to pdf
> > using epstopdf.
> > This doesn't fail, and in fact gv shows the contents (using -dNOSAFER).
> > But the pdf produced seems to be an empty file.
> > Or rather has some data in it, but gv displays the message
> >
> > Warning: Missing charsets in String to FontSet conversion
> >
> > And all pixels render white.
> >
> > I'm using GhostScript 9.55 and just remembered something about a minimum
> > version of GS being needed for lilypond EPS files.
> >
> > FWIW, if I read it correctly, epstopdf ends up doing just about this:
> > cat
> >
> /home/lukes/src/lilypond-build/input/regression/out-test/tuplet-number-shift-along-kneed-beam.eps
> > | gs -dNOSAFER -dNOPAUSE -dBATCH -dCompatibilityLevel=1.5
> -sDEVICE=pdfwrite
> >
> -sOutputFile=/tmp/lukes/lilypond/input/regression/out-test/tuplet-number-shift-along-kneed-beam.pdf
> > -dPDFSETTINGS#/prepress -dMaxSubsetPct=100 -dEmbedAllFonts=true
> > -dAutoRotatePages#/None -dDEBUG - -c quit
> >
> > Which I also tried on cmdline with the same result.
> >
> > I see on this page
> >
> >
> https://lilypond.org/doc/v2.25/Documentation/contributor/requirements-for-running-lilypond
> >
> > that minimum GS is 9.03, though.
> >
> > Any clues?
> > Cheers
> > Luca
> >
> > --
> > Luca Fascione
>
>
>
> --
> Han-Wen Nienhuys - hanwenn@gmail.com - http://www.xs4all.nl/~hanwen
>