Re: Minimum GS version

[Luca Fascione]

Chrome displays it "ok" too (I'd swear there is a missing scanline at the
top, possibly two, and maybe one or two at the bottom)
L

On Sun, Sep 29, 2024 at 10:59 AM Luca Fascione <l.fascione@gmail.com> wrote:

> 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
>
>

-- 
Luca Fascione