Re: LaTeX export is broken with 'num:nil` and 'ALT_TITLE`

[Pedro Andres Aranda Gutierrez]

Hi Rudolf,

After playing around with the generated LaTeX in overleaf, I have to conclude 
that the problem is that ALT_TITLE should be not generated for unnumbered 
chapters, sections, etc. As far as my LaTeX goes, you use the [alt_title] to 
get something different in the TOC, so it makes no sense and LaTeX doesn’t 
cater for it.

Solutions from the org-mode side: 
1. You don’t use ALT_TITLE if section is unnumbered (easier)
2. We make org-mode throw an error in this case (???)

Discussion open ;-)

Seasons greetings,
/PA