Re: latex-export + columnview: misinterpretation of section prefixes as emphasis

From: <tcburt@rochester.rr.com>
To: Carsten Dominik <carsten.dominik@gmail.com>
Cc: Emacs-orgmode <emacs-orgmode@gnu.org>,
	Juan Pechiar <pechiar@computer.org>
Subject: Re: latex-export + columnview: misinterpretation of section prefixes as emphasis
Date: Tue, 1 Jun 2010 10:52:49 -0400	[thread overview]
Message-ID: <20100601145249.NGL0I.308430.root@hrndva-web05-z02> (raw)
In-Reply-To: <8E842A8D-5C36-4E86-8AEE-E886361F3D74@gmail.com>


---- Carsten Dominik <carsten.dominik@gmail.com> wrote: 
> 
> On Jun 1, 2010, at 12:51 PM, Tim Burt wrote:
> 
> >
> >
> > Carsten Dominik <carsten.dominik@gmail.com> writes:
> >
> >> Hi Juan,
> >> On May 31, 2010, at 5:38 AM, Juan Pechiar wrote:
> >>
> >>> Hi!
> >>>
> >>> The test file below contains a columnview table showing section
> >>> headers.
> >>>
> >>> Export to HTML works OK: the asterisks inside the table are
> >>> transformed into indentation.
> >>>
> >>> Export to LaTeX: asterisk pairs are interpreted as emphasis,  
> >>> resulting
> >>> in an incorrect renering of asterisks and bold asterisks.
> >>>
> >>> Following the code, I got lost at org-export-latex-fontify.
> >>>
> >>> I will keep searching for what is happening, but any guidance will  
> >>> be
> >>> appreciated.
> >>
> >> I have fixed at least part of the problem, so the stars will no  
> >> longer
> >> be
> >> interpreted as emphasis.
> >>
> >> However, I am still getting strange results.  FOrmatting a latex file
> >> with this:
> >>
> >> \begin{center}
> >> \begin{tabular}{l}
> >> ITEM                     \\
> >> \hline
> >> * There comes the table  \\
> >> * first                  \\
> >> ** second                \\
> >> *** third                \\
> >> *** other third          \\
> >> **** fourth              \\
> >> ** other second          \\
> >> \end{tabular}
> >> \end{center}
> >>
> >> somehow swallows some of the stars, but seemingly random.
> >> For example, the star before "There" remains, but the star
> >> before "first" disappears.
> >>
> >> This must be some strange LaTeX thing - does anyone
> >> understand what is going on here?
> >
> > This is indeed a LaTeX thing.  The newline sequence (\\) has more than
> > one signature
> > - \\ :: simple newline
> > - \\[additionalSpace] :: newline with additionalSpace
> > - \\*[additionalSpace] :: same as above but will not break a page
> > After the \\ sequence, LaTeX looks for a [ or a * in case the optional
> > argument exists.  In the example above the star is found as _part of a
> > command sequence_ and is therefore not available as something to
> > typeset.
> >
> > One solution in this situation is to put an empty group before the
> > stars:
> >   \begin{center}
> >   \begin{tabular}{l}
> >    ITEM                     \\
> >   \hline
> >   {}* There comes the table  \\
> >   {}* first                  \\
> >   {}** second                \\
> >   {}*** third                \\
> >   {}*** other third          \\
> >   {}**** fourth              \\
> >   {}** other second          \\
> >   \end{tabular}
> >   \end{center}
> >
> > I will think on other possible options.  I hope this helps.
> 
> Well, it certainly helps!  Thanks a lot. At least I understand
> now what is going on.  I guess one solution would be to add an empty  
> column into the Org table and export this as an empty column.   
> Whatever we do, it will be a hack.

I have not found a hack-free solution yet.  Here are some other things I've tried that would be less hackish, but have all failed:
 - Replace \\ with \tabularnewline :: Same behavior as with \\
 - Replace \\ with \\{} :: Extra horizontal space before the *
 - Replace \\ with \tabularnewline{} :: Same behavior as \\{}

I just now tried another solution that does work, but may still be considered a hack.  In short, use the optional argument explicitly:
 - Replace \\ with \\[0pt] :: This has the expected behavior for the * and for the spacing

Tim


> 
> - Carsten
> 
> 
> > Tim
> >
> >
> >>
> >> - Carsten
> >>
> >>
> >>>
> >>> Thanks!
> >>>
> >>> .j.
> >>>
> >>>
> >>> Test file:
> >>> ========================================
> >>> #+COLUMNS: %25ITEM
> >>>
> >>> * There comes the table
> >>>
> >>> #+BEGIN: columnview :vlines 1 :id global
> >>> |   | ITEM                    |
> >>> |---+-------------------------|
> >>> |   | * There comes the table |
> >>> |   | * first                 |
> >>> |   | ** second               |
> >>> |   | *** third               |
> >>> |   | *** other third         |
> >>> |   | **** fourth             |
> >>> |   | ** other second         |
> >>> | / | <>                      |
> >>> #+END:
> >>>
> >>> * first
> >>> ** second
> >>> *** third
> >>> *** other third
> >>> **** fourth
> >>> ** other second
> >>> ========================================
> >>>
> >>> LaTeX output:
> >>> ========================================
> >>> \begin{tabular}{l}
> >>> ITEM                     \\
> >>> \hline
> >>> * There comes the table  \\
> >>> * first                  \\
> >>> ** second                \\
> >>> *** third                \\
> >>> \textbf{*} other third   \\
> >>> \textbf{**} fourth       \\
> >>> ** other second          \\
> >>> \end{tabular}
> >>> ========================================
> >>>
> >>> And the PDF display reads:
> >>> ========================================
> >>> ITEM
> >>> * There comes the table
> >>> first
> >>> * second
> >>> ** third
> >>> * other third
> >>> ** fourth
> >>> * other second
> >>> ========================================
> >>>
> >>>
> >>>
> >>> _______________________________________________
> >>> Emacs-orgmode mailing list
> >>> Please use `Reply All' to send replies to the list.
> >>> Emacs-orgmode@gnu.org
> >>> http://lists.gnu.org/mailman/listinfo/emacs-orgmode
> >>
> >> - Carsten
> >>
> >>
> >>
> >>
> >> _______________________________________________
> >> Emacs-orgmode mailing list
> >> Please use `Reply All' to send replies to the list.
> >> Emacs-orgmode@gnu.org
> >> http://lists.gnu.org/mailman/listinfo/emacs-orgmode
> 
> - Carsten
> 
> 
>