# Re: [isabelle] Unable to get document preparation system to work

On 29 January 2014 15:10, Makarius <makarius at sketis.net> wrote:

> On Wed, 29 Jan 2014, James Lingard wrote:
>
>  I dived into the LaTeX sources, and it turns out that the problem was
>> that I was using the "wrong" version of comment.sty. I was using the most
>> recent version, version 3.7 (which dates from 2009). It seems that Isabelle
>> requires version 3.6.
>>
>
> Just before the test, I had updated to recent MacTeX-2013 and its
> /usr/local/texlive/2013/texmf-dist/tex/latex/comment/comment.sty is still
> at version 3.6.
>
> Looking briefly at http://www.ctan.org/tex-archive/macros/latex2e/
> contrib/comment has the same 3.6 number in the blurb, but there is a
> brand-new version 3.7:
>
>   comment.sty   9666    2014-01-23 07:36:21
>

That's weird.  The copyright at the top of the file says July 2009.  If it
really is brand new then that explains why I might have been the first
person to run into this.

Thanks,
James.

Its inlined changelog says:
>
>  Changes in 3.7
>  % - only LaTeX support from now on
>  % - code cleanup, and improvements on \specialcomment
>  % - cleanup of the docs.
>
> This means it cannot be used with isabelle.sty, because of that:
>
> %plain TeX version of comment package -- much faster!
> \let\isafmtname\fmtname\def\fmtname{plain}
> \usepackage{comment}
> \let\fmtname\isafmtname
>
>
> If comment.sty 3.7 is actually better in latex mode now, it might be worth
> revisiting.  But by default this is just a normal instance of "latex
> package version hell".
>
>
>         Makarius
>



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