Re: [PATCH]: ox-latex: omit empty date

[Max Nikulin]

On 31/07/2022 07:53, Ihor Radchenko wrote:
> Max Nikulin writes:
>
> > >        (let ((date (and (plist-get info :with-date) (org-export-get-date 
> > > info))))
> > > -       (format "\\date{%s}\n" (org-export-data date info)))
> > > +       (cond date
> >
> > I would consider (plist-get info :with-date) instead of date here to
> > allow to suppress date in the title by
> >
> > #+options: title:t date:t
> > #+date:
> >
> > With such approach to avoid \date{} in the latex file date:nil can be
> > used in the options line.
> >
> > > +             (format "\\date{%s}\n" (org-export-data date info))))
>
> I am sorry, but I do not understand.
>
> I tried
>
> #+options: title:t date:nil
>
> No \date is exported.
>
> #+options: title:t date:t
>
> \date is exported
>
> #+options: title:t date:t
> #+date:
>
> No date is export.
>
> All the above makes sense. Do I miss something?

To be precise, \date is not exported to LaTeX file, but current date 
appears in PDF. That is why I consider the change as a breaking one.

Try to export to PDF the following document.

---- >8 ----
#+options: title:t
# #+options: date:nil
# #+date:
#+title: Title
test
---- 8< ----

PDF file is produced with current date. Before the patch it was possible 
to suppress date in PDF file by removing comment for either "#+options: 
date:nil" or for "#+date:". With current main branch HEAD some other 
workaround is required. I think, it is not what is expected from the 
description of the #+options: keyword:

> ‘date:’
>      Toggle inclusion of a date into exported file
>      (‘org-export-with-date’).

info "(org) Export Settings" https://orgmode.org/manual/Export-Settings.html