[bug?][ox-beamer] hyperref crashes when options are specified

[bug?][ox-beamer] hyperref crashes when options are specified

[Rasmus]

Hi,

If you give hyperref options when exporting to Beamer it will
typically crash.

I load hyperref as follows to make it compatible with "exotic"
headlines in XeLaTeX:

  (setq org-latex-default-packages-alist
        '(("" "iftex" nil)
          ("" "fixltx2e" nil)
          ("AUTO" "inputenc" t)
          ("T1" "fontenc" t)
          ("AUTO" "babel" nil)
          ("" "scrpage2" nil)
          ("" "graphicx" t)
          ("" "amsmath" t)
          ("" "amssymb" t)
          ("" "booktabs" t)
          ("" "marvosym" t)
          ("" "microtype" nil)
          ("" "slantsc" nil)
          ("unicode, psdextra,hidelinks" "hyperref" nil)))

Because Beamer loads hyperref automatically this will crash.  The
correct way to load it is through the document class options, e.g.

     \documentclass[hyperref={unicode, psdextra,hidelinks}]{beamer}

Should ox-beamer automatically move the options in this case?
Unfortunately, it seems that I cannot directly modify the latex
package alist via a parse tree filter, which would have been the
easiest.

Alternatively, I could write a LaTeX hack using \@ifclassloaded or
using the final filter to move things around before compilation.

Thanks,
Rasmus

-- 
May the Force be with you

Re: [bug?][ox-beamer] hyperref crashes when options are specified

[Nicolas Goaziou]

Hello,

Rasmus <rasmus@gmx.us> writes:

> If you give hyperref options when exporting to Beamer it will
> typically crash.
>
> I load hyperref as follows to make it compatible with "exotic"
> headlines in XeLaTeX:
>
>   (setq org-latex-default-packages-alist
>         '(("" "iftex" nil)
>           ("" "fixltx2e" nil)
>           ("AUTO" "inputenc" t)
>           ("T1" "fontenc" t)
>           ("AUTO" "babel" nil)
>           ("" "scrpage2" nil)
>           ("" "graphicx" t)
>           ("" "amsmath" t)
>           ("" "amssymb" t)
>           ("" "booktabs" t)
>           ("" "marvosym" t)
>           ("" "microtype" nil)
>           ("" "slantsc" nil)
>           ("unicode, psdextra,hidelinks" "hyperref" nil)))
>
> Because Beamer loads hyperref automatically this will crash.  The
> correct way to load it is through the document class options, e.g.
>
>      \documentclass[hyperref={unicode, psdextra,hidelinks}]{beamer}
>
> Should ox-beamer automatically move the options in this case?

No, it shoudn't. This crash is not really Org's fault.

You could define an appropriate class for `beamer' back-end instead.


Regards,

-- 
Nicolas Goaziou

Re: [bug?][ox-beamer] hyperref crashes when options are specified

[Rasmus]

Hi,

Nicolas Goaziou <n.goaziou@gmail.com> writes:

> Hello,
>
> Rasmus <rasmus@gmx.us> writes:
>
>> If you give hyperref options when exporting to Beamer it will
>> typically crash.
>>
>> I load hyperref as follows to make it compatible with "exotic"
>> headlines in XeLaTeX:
>>
>>   (setq org-latex-default-packages-alist
>>         '(("" "iftex" nil)
>>           ("" "fixltx2e" nil)
>>           ("AUTO" "inputenc" t)
>>           ("T1" "fontenc" t)
>>           ("AUTO" "babel" nil)
>>           ("" "scrpage2" nil)
>>           ("" "graphicx" t)
>>           ("" "amsmath" t)
>>           ("" "amssymb" t)
>>           ("" "booktabs" t)
>>           ("" "marvosym" t)
>>           ("" "microtype" nil)
>>           ("" "slantsc" nil)
>>           ("unicode, psdextra,hidelinks" "hyperref" nil)))
>>
>> Because Beamer loads hyperref automatically this will crash.  The
>> correct way to load it is through the document class options, e.g.
>>
>>      \documentclass[hyperref={unicode, psdextra,hidelinks}]{beamer}
>>
>> Should ox-beamer automatically move the options in this case?
>
> No, it shoudn't. This crash is not really Org's fault.

Customizing an Org package alist, Org inserts code that is invalid in
a Beamer context.

> You could define an appropriate class for `beamer' back-end instead.

Org-latex-classes gives me access to [NO-DEFAULT-PACKAGES].  Not
removing a single element from it as far as I understand.  Or am i
mistaken?

IMO, a wrapper around the header like org-latex-guess-babel-language
would be better, but I don't have strong opinions on this.

—Rasmus

-- 
Dung makes an excellent fertilizer

Re: [bug?][ox-beamer] hyperref crashes when options are specified

[Nicolas Goaziou]

Rasmus <rasmus@gmx.us> writes:

> Customizing an Org package alist, Org inserts code that is invalid in
> a Beamer context.

Code generated is valid and conform to expectations, but, unfortunately,
incompatible with "beamer" class.

>> You could define an appropriate class for `beamer' back-end instead.
>
> Org-latex-classes gives me access to [NO-DEFAULT-PACKAGES].  Not
> removing a single element from it as far as I understand.  Or am i
> mistaken?

You probably shouldn't add this package to default header in the first
place. `org-latex-packages-alist' is a better place.

Anyway, yes, you need to remove all packages/default-packages first in
your dedicated "beamer" class.

> IMO, a wrapper around the header like org-latex-guess-babel-language
> would be better, but I don't have strong opinions on this.

Again, we shouldn't try to start fixing incompatibilities between
packages and classes, or between packages in Org. Your configuration is
broken, not Org.


Regards,

-- 
Nicolas Goaziou