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Firefox: PDF: Probleme mit Schriften #2933

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pmenzel opened this issue Jul 24, 2023 · 1 comment
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Firefox: PDF: Probleme mit Schriften #2933

pmenzel opened this issue Jul 24, 2023 · 1 comment

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@pmenzel
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pmenzel commented Jul 24, 2023

@donald hatte es schon einmal bei Dokumenten im SAP-System erwähnt und jetzt meinte das Lager, dass die die Schrift bei der Kommissionierungsliste des eLagers nicht gut aussehe.

@pmenzel
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pmenzel commented Jul 26, 2023

Siehe Helpdesk-Diskussion [Linux] Pdf und andere Ausdrucke aus Firefox fehlerhaft.

pmenzel added a commit that referenced this issue Jul 28, 2023
…Firefox

This works around a Mozilla Firefox regression from 114.0 to 115.0.
Firefox was upgraded from 114.0 to 115.0 around July 5th, 2023, and
until now we had two problem reports. It’s actually a [regression][1]
[in][2] [pdf.js][3], used to display PDF files inside the browser.
Evince or other PDF viewers do not have the problem.

The problem is, that for PDF documents using Helvetica, but not
embedding the font, pdf.js chooses the X.Org font, despite Fontconfig
matching *Helvetica* to *Nimbus Sans L*:

    $ fc-match Helvetica
    n019003l.pfb: "Nimbus Sans L" "Regular"

As downgrading Firefox from 115.0.2 to 114.0 is unsupported by Mozilla
for profiles – a warning is shown, and you need to start it with
`--allow-downgrade` – remove the likely unused Helvetica fonts confusing
Firefox/pdf.js.

Resolves: #2933

[1]: https://bugzilla.mozilla.org/show_bug.cgi?id=1845551
[2]: https://bugzilla.mozilla.org/show_bug.cgi?id=1839860
[3]: https://github.com/mozilla/pdf.js/commit/53134c0c0bb2d19244dd8c31aa4e8e6d01a657e4
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