Re: Minimum GS version

[Luca Fascione]

Ok so,
I looked in the PDF and I saw
I got a partial improvement using -dEPSCrop, now I get a pdf that gv will
open (but interestingly not okular, for some reason)
This is weird.
L

On Sun, Sep 29, 2024 at 9:33 AM Luca Fascione <l.fascione@gmail.com> wrote:

> Uh. I wonder if the resulting pdf, notwithstanding the directions to embed
> the fonts, also requires something like nosafer to work...
>
> On Sun, 29 Sept 2024, 09:31 Luca Fascione, <l.fascione@gmail.com> wrote:
>
>> 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
>>>
>>

-- 
Luca Fascione