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Re: bugs in web.pdf

From: Masamichi Hosoda
Subject: Re: bugs in web.pdf
Date: Thu, 27 Apr 2017 00:29:18 +0900 (JST)

>> What's interesting is that my locally compiled web.pdf (with Xetex
>> version 2017.03.30:1237) displays page 10 almost correctly, in that
>> the page stays A4 vertical but the image is rotated 90°
>> counter-clockwise. See attached the extracted page.
>> web.pdf on lilypond.org was built with a more recent version of Xetex.

I think that it is not caused by the difference in XeTeX version.
Does your environment have `extractpdfmark`?

GUB has `extractpdfmark` and Ghostscript 9.20.
In such environments, PDFs are processed by Ghostscript after extractpdfmark.
At that time, Ghostscript seems to rotate by "majority decision".


`-dAutoRotatePages=/None` option for Ghostscript seems to need.
This will prevent landscape pages like lilypond.org web.pdf page 10.
However, it can not prevent image rotation like your web.pdf page 10.

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