Bug: Beamer export error

Bug: Beamer export error

[Jarmo Hurri]

Greetings.

I get an error (pdflatex hangs up) when trying to Beamer export the
following simple Org file (key command C-c C-e l O).

# -----------------------------------------------------------------
#+STARTUP: beamer

* This is a simple test
  - let us see what happens
# -----------------------------------------------------------------

I have traced the issue to the extra comma in the following line in the
exported TeX file:

\begin{frame}[,label={sec:org03f80c8}]{This is a simple test}

If you remove the extra comma, then the file compiles just fine.

Thanks in advance!

Jarmo

Re: Bug: Beamer export error

[Jarmo Hurri]

While the bug is being fixed, here is a quick band-aid for anyone else
struggling with this problem.

1. When the export hangs up, press C-g to interrupt.
2. Run the following on the intermediate tex file, here exported.tex :
   sed -i 's/\[,/\[/g' exported.tex
3. Run pdflatex by hand:
   pdflatex exported.tex

Jarmo

Re: Bug: Beamer export error

[Rasmus]

Hi Jarmo,

Thanks for your report.

Jarmo Hurri <jarmo.hurri@iki.fi> writes:

> I get an error (pdflatex hangs up) when trying to Beamer export the
> following simple Org file (key command C-c C-e l O).
>
> # -----------------------------------------------------------------
>
> #+STARTUP: beamer
>
> * This is a simple test
>   - let us see what happens
> # -----------------------------------------------------------------
>
> I have traced the issue to the extra comma in the following line in the
> exported TeX file:
>
> \begin{frame}[,label={sec:org03f80c8}]{This is a simple test}
>
> If you remove the extra comma, then the file compiles just fine.

This is caused by this commit, which changes how org-split-string works.

    f776e65373fa135fffb51e201698823fbfb3865b

Before (org-split-string "" ",") would return ‘nil’.  Now it returns "".

Depending on whether the new behavior is desired or not, the fix should
either be in ‘org-split-string’ or in ‘org-beamer--format-frame’.  I’ll
wait for Nicolas’ verdict.

For now, if necessary, you can hot-patch the function in ox-beamer.el to
something like,

    (options (cl-remove-if-not 'org-string-nw-p (append ...)))

Rasmus

-- 
Vote for proprietary math!

Re: Bug: Beamer export error

[Nicolas Goaziou]

Hello,

Rasmus <rasmus@gmx.us> writes:

> This is caused by this commit, which changes how org-split-string works.
>
>     f776e65373fa135fffb51e201698823fbfb3865b
>
> Before (org-split-string "" ",") would return ‘nil’.  Now it returns "".
>
> Depending on whether the new behavior is desired or not, the fix should
> either be in ‘org-split-string’ or in ‘org-beamer--format-frame’.  I’ll
> wait for Nicolas’ verdict.

I think the new behaviour is correct, because it is equivalent to

  (split-string "" ",")

Do you want to fix it?

Thank you.

Regards,

-- 
Nicolas Goaziou

Re: Bug: Beamer export error

[Rasmus]

Nicolas Goaziou <mail@nicolasgoaziou.fr> writes:

> Hello,
>
> Rasmus <rasmus@gmx.us> writes:
>
>> This is caused by this commit, which changes how org-split-string works.
>>
>>     f776e65373fa135fffb51e201698823fbfb3865b
>>
>> Before (org-split-string "" ",") would return ‘nil’.  Now it returns "".
>>
>> Depending on whether the new behavior is desired or not, the fix should
>> either be in ‘org-split-string’ or in ‘org-beamer--format-frame’.  I’ll
>> wait for Nicolas’ verdict.
>
> I think the new behaviour is correct, because it is equivalent to
>
>   (split-string "" ",")
>
> Do you want to fix it?

It should be fixed by commit 323fc95b4.

Thanks,
Rasmus

-- 
Tack, ni svenska vakttorn. Med plutonium tvingar vi dansken på knä!

Re: Bug: Beamer export error

[Nicolas Goaziou]

Hello,

Rasmus <rasmus@gmx.us> writes:

> It should be fixed by commit 323fc95b4.

Thank you.

Regards,

-- 
Nicolas Goaziou

Re: Bug: Beamer export error

[Jarmo Hurri]

Rasmus <rasmus@gmx.us> writes:

> It should be fixed by commit 323fc95b4.

Thank you very much, seems to be in order again.

Jarmo