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Re: [Bug-AUCTeX] 11.86; preview confused by beamer+xelatex

From: Ralf Angeli
Subject: Re: [Bug-AUCTeX] 11.86; preview confused by beamer+xelatex
Date: Sun, 03 Apr 2011 15:53:10 +0200

* Giacomo Boffi (2011-03-27) writes:

> Ralf Angeli writes:
>  > It looks like the document class or some package sets \pdfoutput.
>  > There is even a warning about this by the ifpdf package in the log.
>  > If \pdfoutput is set, preview.sty assumes that PDFLaTeX is used.
>  > It then checks the value of \pdfoutput in order to find out if PDF
>  > output is produced.  In your example the value is 0, so preview.sty
>  > comes to the conclusion that DVI output is produced.  And that's
>  > why preview-latex then calls dvips.
>  > 
>  > I didn't look by whom \pdfoutput is set to 0, but this looks a bit
>  > fishy.  Do you happen to know where and why this is done?
> i don't, sorry

It looks like beamer.cls does this itself:

,----[ from beamer.cls ]
| %
| % Ensure that \pdfoutput is defined. Might be removed at some point.
| %
| address@hidden \newcount\pdfoutput \fi
| \ifx\pdfoutput\relax \newcount\pdfoutput \fi

>  > In any case, either the document class or some package loads
>  > hyperref and recent versions of it are incompatible with
>  > preview.sty.  So even if we can get rid of the \pdfoutput problem,
>  > you won't have much joy with this combination.
> my debian has texlive 2009, so newest releases of hyperref shouldn't
> cast too dark a shadow on my texing...

I think the incompatibility already exists in this release.  I'm using
the same version of TeX Live and when I load hyperref in circ.tex (the
preview-latex showcase), preview-latex complains that it found no
previews.  At least when it is run on the document.  Running it at point
oddly seems to work.


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