Re: Ignore Local Variables list in source blocks

[Nikolaos Chatzikonstantinou <nchatz314@gmail.com>]

On Fri, Dec 20, 2024 at 9:46 AM Max Nikulin <manikulin@gmail.com> wrote:
>
> On 20/12/2024 04:37, Joseph Turner wrote:
> > Max Nikulin writes:
> >> Have you tried to create a comment block below?
> >>
> >> #+begin_comment
> >> Deactivate local variables above in the example block:
> >> Local Variables:
> >> End:
> >> #+end_comment
> >
> > In my testing, in order to make Emacs ignore the `foo: bar' binding, the
> > empty Local Variables list actually needs to go first.
>
> Then it is more fragile in the case of complex documents, but still may
> be viable for simple ones with single example.
>
> > Splitting the example into two parts results in "File mode specification
> > error: (user-error Local variables entry is missing the prefix) " upon
> > opening the file.
>
> I expected that the code looking up for local variables is reasonably shy.
>
> > You can test with this:
> > #+BEGIN_SRC org
> >    # Local Variables:
> > #+END_SRC
> >
> > #+BEGIN_SRC org
> >    # org-srs-review-new-items-per-day: 30
> >    # org-srs-review-max-reviews-per-day: 100
> >    # End:
> > #+END_SRC
>
> Unfortunately
>
> :   # Local Variables:
> #+BEGIN_EXAMPLE
>    # org-srs-review-new-items-per-day: 30
>    # org-srs-review-max-reviews-per-day: 100
>    # End:
> #+END_EXAMPLE
>
> Causes a warning as well:
> "Local variables list is not properly terminated"
>
> >> (info "(emacs) Specifying File Variables")
> >
> > By the way, is there a built-in command to copy that (info ...) sexp
> > when viewing that info page?
>
> A short answer "C-0 c" or "C-0 w". Maybe I will send a longer one,
> dropping bohonghuang from Cc.
>
> >> <https://www.gnu.org/software/emacs/manual/html_node/emacs/Specifying-File-Variables.html>
> >
> > Thanks, I just re-read that page more carefully, and I see this:
> >
> >      If some unrelated text might look to Emacs as a local variables
> >      list, you can countermand that by inserting a form-feed character (a
> >      page delimiter, *note Pages::) after that text.  Emacs only looks for
> >      file-local variables in the last page of a file, after the last page
> >      delimiter.
>
> I do not like non-printable characters. E.g. Thunderbird rendered your
> message with confusingly large vertical space in the middle. Outside of
> Emacs, kludges like ";;; org.el ends here" are not common. I would not
> be surprised by some issues on attempt to edit the README.org file on
> the GitHub site directly.


If I do something like

#+begin_comment
Local Variables:
End:
#+end_comment

#+begin_src
Local Variables:
foo: 40
End:
#+end_src

Then the variable is not set, as Emacs does not look for a Local
Variables list more than once.

Regards,
Nikolaos Chatzikonstantinou