[luatex] CMYK colors and transparency

[Mojca Miklavec]

On Sun, Jan 22, 2012 at 01:02, Reinhard Kotucha wrote:
>
> Curiously enough, xpdf and gv display everything correctly.  Thus, I
> assume that the problem is caused by an Acrobug.
>
> Maybe some PDF expert can answer the following questions:
>
>  * Does the way TikZ applies its color space comply 100% with the PDF
>   specification?
>
>  * Is there a way to restrict the color space applied by TikZ to act
>   on the TikZ graphic only, instead of the whole page?
>
>  * Can this problem be reproduced with ConTeXt?  Does ConTeXt
>   implement transparency in a more robust way?

See http://www.ntg.nl/pipermail/ntg-context/2005/012867.html

>  * If it's not possible to make the PDF file created by TeX more
>   robust, how can I contact Adobe in order to file a bug report?

Be happy that Acrobat doesn't crash ;) Snow Leopard kept crashing on
my files, even if I only wanted to attach them in my emails.

It's not the same company, but I submitted a bug report about
rendering of smooth shading to Apple around 2007. Last month they
replied me for the first time, saying that I should upgrade to
10.7.<latest> which probably fixes the bug. Of course it doesn't
(except that Lion now doesn't crash, but it still renders patterns in
the wrong way).

Mojca