Re: [bug] Export to latex truncates long subsections (WE attached)

[Julius Dittmar <Julius.Dittmar@gmx.de>]

Am 19.11.20 um 05:58 schrieb Tim Cross:
>
> Vladimir Nikishkin <lockywolf@gmail.com> writes:
>
>> So what is the status of this story?
>>
>> I believe that if one exports an org file with sufficiently many empty
>> TODO headings (to me, it seems a perfectly valid use case of org,
>> printing lists of TODOs), they won't fit on a single page, and latex
>> will drop them. Would the latex snippet in this thread be a good
>> candidate for inclusion into org as a canned trick?
>>
>> On Tue, 27 Aug 2019 at 14:57, Vladimir Nikishkin <lockywolf@gmail.com> wrote:
>>>
>>> I have indeed investigated the issue, and this is the link:
>>> https://latex.org/forum/viewtopic.php?f=47&t=32788
>>>
>>> To make the long story short, the folowing trick is needed to allow
>>> page breaks after headings (which is a completely standard case in
>>> -org).
>>>
>>> #+begin_src latex
>>> \usepackage{xpatch}
>>> \makeatletter
>>> % This is not recommended, because it can break several things
>>> \xpatchcmd{\@afterheading}{\@nobreaktrue}{\@nobreakfalse}{%
>>> \typeout{WARNING: \string\@afterheading\space broken}%
>>> }{%
>>> \@latexerr{ERROR: Cannot patch \string\@afterheading}\@ehd%
>>> }
>>> \makeatother
>>> #+end_src
>>>
>>> Shall this trick be considered for inclusion in 'org' officially?
>>> I mean, having lists of empty headings is a perfectly standard use case for org.
>>>
>
> What are the implications of doing this? In particular, the comment
>
>>> % This is not recommended, because it can break several things
>
> Many people have quite complex environments for generating Latex and we
> would need to be certain that adding this package doesn't 'break several
> things'.

For one thing, it allows something (La)TeX tries to circumvent: page
breaks immediately after a section heading. In normal documents, that's
something you want to avoid as much as possible.

Perhaps another approach would be more fitting, but it needs changing
the LaTeX output routine: Have org add something invisible after a
heading in case that heading's body is empty. That makes page breaks
possible (after that invisible something) without changing the behaviour
for non-empty sections.

Just my thoughts,
Julius Dittmar