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Re: [O] help debugging latex-overlays boxes

From: John Kitchin
Subject: Re: [O] help debugging latex-overlays boxes
Date: Fri, 05 Sep 2014 15:18:44 -0400
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/24.4.50 (darwin)

Nick Dokos <address@hidden> writes:

Thanks for the tips. It is possible minted is the culprit. I will give
that a try, and the other ideas too. I am sure it is using dvipng, and
that it works. It will be a nice adventure in more sophisticated
debugging ;)

> John Kitchin <address@hidden> writes:
>> Hi All,
>> I am using org-mode in a course this fall with 60 students.  All of them
>> are using org-mode from elpa. For about 10 of them, they are unable to
>> toggle the latex-overlays; instead of getting the equations, they get
>> empty gray boxes with an error that the png file was not created.  Oddly
>> enough, they can export to PDF just fine. I have also checked that they
>> have LaTeX (TeXLive) installed, and it appears it is. I am able to
>> convert tex files to dvi, and then use dvipng to make a png image. But
>> for some reason, the toggle-latex-overlay function does not work for
>> them.
>> I am at a loss to figure out what the issue is. These are Windows
>> laptops that were preconfigured by the department. Almost all of them
>> work fine, except for this small number I cannot figure out.
>> Any ideas? Thanks,
> I would edebug-defun the function org-create-formula-image and step
> through it to make sure that it goes the way you want (are you sure you
> are using the dvipng method on these machines? maybe you are using the
> imagemagick method but the program has not been installed?  Check the
> value of org-latex-create-formula-image-program).
> While you are stepping you can also check the variables in the function
> and see e.g. what the output file name is.
> If that goes OK, then I would edebug-defun
> org-create-formula-image-with-dvipng next and check the latex input file
> it produces. Make sure that things like minted which require
> --shell-escape are *not* included in that input file: it's processed by
> a hard-wired call to latex (without --shell-escape) , so minted will
> cause a failure. If that is the case, check org-latex-packages-alist and
> make sure that minted's snippet-flag is nil.
> HTH,
> Nick

John Kitchin
Doherty Hall A207F
Department of Chemical Engineering
Carnegie Mellon University
Pittsburgh, PA 15213

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