Re: LaTeX multicolumn count wrong in table export

[Carsten Dominik <carsten.dominik@gmail.com>]

On Aug 29, 2009, at 1:04 AM, Nick Dokos wrote:

> Karl Stump <karlstump@yahoo.com> wrote:
>
>> When exporting a table with a horizontal line the column count is  
>> wrong.
>>
>> Output from pdflatex run:
>>
>> ! Extra alignment tab has been changed to \cr.
>> <template> \endtemplate
>>
>> l.32 ....\multicolumn{4}{r}{Continued on next page}
>>                                                  \
>> ?
>>
>> Here's the table in the tex file:
>>
>> \begin{longtable}{||lll||}
>> \caption{This is a long table with lines around and between cells}\\
>> Heading1  &  Heading2  &  Heading3 \\
>> \hline
>> \endhead
>> \hline\multicolumn{4}{r}{Continued on next page}\
>> \endfoot
>> \endlastfoot
>> \hline
>> alpha     &  beta      &  gamma     \\
>>           &            &            \\
>> \end{longtable}
>>
>> Here's the org file:
>>
>> ** table export test
>>
>> #+CAPTION: This is a long table with lines around and between cells
>> #+LATEX_HEADER: \usepackage[landscape]{geometry}
>> #+LATEX_HEADER:  
>> \geometry{left=0.12in,right=0.12in,top=0.25in,bottom=0.25in}
>> #+ATTR_LaTeX: longtable align=||lll||
>>
>>    | / | <30>     | <10>     | <10>     |
>>    |   | Heading1 | Heading2 | Heading3 |
>>    |---+----------+----------+----------|
>>    |   | alpha    | beta     | gamma    |
>>    |   |          |          |          |
>>
>> start: 0000-00-00 end: 0000-00-00
>>
>
>
> I believe it's because of the dummy "calculation-mark" column,
> which is not exported. However, the variable org-table-last-alignment
> (a list, whose length becomes the value of the \multicolumn argument)
> ends up having the value (nil nil nil nil), i.e. it counts the dummy
> column as well. What the proper place to adjust the value is, I don't
> know, but it should be easy for Carsten to fix it. For the time being,
> you can either get rid of the dummy row and column (e.g. if you don't
> need the widths) or fix it by hand in the LaTeX file.
>

Indeed.  I have fixed this.  We now pops `org-table-last-alignment' if
the first column has been removed by `org-table-clean-before-export'.
The same problem must have caused a one-off error when setting the
alignment in LaTeX tables, bu it seems nobody has noticed this so
far.  Anyway, also this is fixed now.

Thanks to both of you!

- Carsten