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Re: [AUCTeX] dvipng is not called by auctex

From: Faheem Mitha
Subject: Re: [AUCTeX] dvipng is not called by auctex
Date: Thu, 4 Jul 2013 13:25:28 +0530 (IST)
User-agent: Alpine 2.00 (DEB 1167 2008-08-23)

On Thu, 4 Jul 2013, David Kastrup wrote:

Faheem Mitha <address@hidden> writes:

Looking at the compilation output, I see that the creation of the
preview png snippets seems to be done by ghostscript. It looks like
a pdf file is first created by TeX and then pdf2dsc is used to
create a dsc file from that pdf.

The dsc file is not doing much: basically it fakes a PostScript page
directory for the PDF file that then can be processed as if it had
been PostScript to start with.

I see.

I'm not clear what gs uses to create the final png.

Its png16m backend.


In any case, in terms of speed, is this the best possible option?

Nowadays, it's conceivable that pdftocairo might be faster, but it
would not seem possible to do the kind of demand-based rendering
that the Ghostscript interactive interface does, not with a single
process.  If you are daring, you might want to try writing a backend
for that.  At the time preview-latex was actively developed, there
was no reasonable PDF->png converter available apart from

I see. The current preview setup is fine. Thanks very much for the explanation, and for preview-latex.

                                                   Regards, Faheem

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