Last try:
put the following after the header and before the text in your buffer,
evaluate the block (C-c C-c) and then export to a buffer C-c C-e l L
--- cut here
#+BEGIN_SRC emacs-lisp :exports none :results none :eval export
(defun add-texparse-filter (output backend info)
"Disable TeX-parse-self."
(when (eq backend 'latex)
(concat output
"\n"
"%%% Local Variables:\n"
"%%% TeX-parse-self: nil\n"
"%%% End:\n" )))
(make-variable-buffer-local 'org-export-filter-final-output-functions)
(add-to-list 'org-export-filter-final-output-functions
'add-texparse-filter)
#+END_SRC
--- cut here
This is a try to see if we can make the configuration of this
workaround customisable.
Best, /PA
On Sun, 29 Jun 2025 at 14:12, Vangelis Evangelou <evange...@gmail.com> wrote:
>
> Hi Pedro.
>
> > This looks more like a side effect of using the auctex package
>
> I see. That makes sense. However, the function org-latex-export-as-latex
> calls LaTeX-mode, which is an alias for ‘latex-mode’ in ‘tex-mode.el’ that
> comes with emacs. However, auctex defines its own LaTeX-mode. I think
> org-latex-export-as-latex *intentionally* calls LaTeX-mode instead of
> latex-mode to make use of auctex if that's available.
>
> > Just BTW, do you see the problem pop up when you C-c C-e l o?
>
> No, it doesn't happen in this case.
>
> > What about saving the exported LaTeX to a file and then opening the file in
> > a separate buffer?
>
> I'm not sure what you mean. Do you mean C-c C-e l l? In that case, the
> problem doesn't happen after you open the file because the buffer is
> associated with a file.
>
> > Wasn't it TeX-master that did this...
>
> Yes, TeX-master also specifies the master file. TeX-master is part of auctex.
> reftex-TeX-master-file is part of reftex that does the same job.
> reftex-TeX-master-file uses auctex, if installed, otherwise, it does its own
> thing.
>
> > Anyhow, after reading the auctex documentation, could you please add the
> > following at the beginning of your test document?
>
> There must be something wrong with your code because after I do export and
> check org-export-filter-final-output-functions, I see nil. I also get an
> error with that when I open the org file: "Local variables list is not
> properly terminated"
>
> At the moment my workaround is
> (use-package org
> :config
> (advice-add 'org-latex-export-as-latex :around
> (lambda (fun &rest args)
> (cl-letf (((symbol-function 'reftex-TeX-master-file)
> (and (fboundp 'TeX-master-file)
> (not (buffer-file-name))
> #'(lambda (&rest _) "<none>"))))
> (apply fun args)))))
>
> I think this is harmless as it temporarily overwrites reftex-TeX-master-file
> if auctex is used and there is no file associated with the buffer. In that
> case the return value is "<none>", which is what TeX-master-file would return
> as well.
>
> As I said in my previous email, if TeX-parse-self is t, then emacs scans for
> usepackage commands. Because the exported org file uses the amstex package,
> there are some commands provided by that package that need reftex, and so it
> runs reftex-TeX-master-file. However, reftex requires a file, and so it
> results in an error. Temporarily changing the behaviour of
> reftex-TeX-master-file should be OK.
>
> On Sun, 29 Jun 2025 at 07:06, Pedro Andres Aranda Gutierrez
> <paag...@gmail.com> wrote:
>>
>> Hi
>> Thx a lot for the explanation... answers inline
>>
>> On Sat, 28 Jun 2025 at 18:04, Vangelis Evangelou <evange...@gmail.com> wrote:
>> >
>> > Hi Pedro.
>> >
>> > > I don't think this is a bug. It's more of a side effect ...
>> >
>> > I'm not sure what you are referring to. I assume that since the program
>> > does not produce the intended output, then it's a bug.
>> Well, IMHO, a bug is when your code doesn't produce the intended
>> result standalone. This looks more like a side effect of using the
>> auctex package, so people not using it will not be affected by it.
>>
>> Just BTW, do you see the problem pop up when you C-c C-e l o? What
>> about saving the exported LaTeX to a file and then opening the file in
>> a separate buffer?
>>
>> > > I'd like to understand what this reftex-TeX-master-file variable means
>> > > and what the effect of TeX-parse-self is.
>> >
>> > TeX-parse-self instructs emacs to scan the tex file for the document
>> > class, loaded packages and user-defined commands and make the relevant
>> > commands available to the user. For example, the graphicx package provides
>> > the command \includegraphics. Consider a file called file.tex containing
>> > the following
>> > =====================
>> > \documentclass{article}
>> > \usepackage{graphicx}
>> > \begin{document}
>> >
>> > \end{document}
>> > ====================
>> > With TeX-parse-self set to t (see the code in my original email), emacs
>> > will provide the commands from the article class and the graphicx package.
>> > For example, if you type C-c RET and then type includegraphics it will ask
>> > you a few questions about the image you want to include in the document.
>> > With TeX-parse-self set to nil, it doesn't know about the includegraphics
>> > command.
>> >
>> > reftex-TeX-master-file tells emacs which is the master file (so it assumes
>> > that such a file exists). That is, the main file that includes other files
>> > and needs to be compiled to produce a document. So you might have, e.g.,
>> > file1.tex and file2.tex with file1.tex being the master file that includes
>> > file2.tex. So the master of file2 is file1.
>>
>> I see... Wasn't it TeX-master
>> (https://www.gnu.org/software/emacs/manual/html_node/reftex/Multifile-Documents.html)
>> that did this...
>>
>> > > A workaround may be what you propose or to
>> > > (setq-local TeX-parse-self nil)
>> > > in your org-mode-hook. Could you try this, please?
>> >
>> > This does not solve the problem because it applies the setting to the org
>> > buffer and not the exported latex buffer.
>> >
>> > I should add that (setq TeX-parse-self t) is one of the recommended
>> > settings by auctex https://elpa.gnu.org/packages/doc/auctex.html so I
>> > believe others are affected by this issues, though I'm surprised it hasn't
>> > been mentioned before.
>>
>> This is the source of my surprise too...
>>
>> Anyhow, after reading the auctex documentation, could you please add
>> the following at the beginning of your test document?
>>
>> --- cut here
>> #+BEGIN_SRC emacs-lisp :exports none :results none :eval export
>> (defun add-texmaster-filter (output backend info)
>> "Add `%' to `\\end{minipage}' to allow side by side."
>> (when (eq backend 'latex)
>> (message "Adding TeX-master...")
>> (string-replace "\\end{document}"
>> "\\end{document}\n\n%%% Local Variables:\n%%%
>> TeX-master: t\n%%% End:\n" output)))
>>
>> (make-variable-buffer-local 'org-export-filter-final-output-functions)
>> (add-to-list 'org-export-filter-final-output-functions
>> 'add-texmaster-filter)
>> #+END_SRC
>> --- cut here
>>
>> Best, /PA
>> >
>> > On Sat, 28 Jun 2025 at 06:17, Pedro Andres Aranda Gutierrez
>> > <paag...@gmail.com> wrote:
>> >>
>> >> Hi Vangelis...
>> >>
>> >> Me and thinking?.. rather difficult... <LoL>
>> >>
>> >> Now seriously...
>> >> I don't think this is a bug. It's more of a side effect and I'd like
>> >> to understand what this reftex-TeX-master-file variable means and
>> >> what the effect of TeX-parse-self is.
>> >>
>> >> A workaround may be what you propose or to
>> >> (setq-local TeX-parse-self nil)
>> >> in your org-mode-hook. Could you try this, please?
>> >>
>> >> IMvvHO, it would be more desirable approach, because you control your
>> >> setup for the packages you use.
>> >> org would just document this "special case" (maybe in the FAQ),
>> >> instead of "bloating" the package itself.
>> >>
>> >> @Ihor WDYT?
>> >> Best, /PA
>> >>
>> >> On Fri, 27 Jun 2025 at 18:31, Vangelis Evangelou <evange...@gmail.com>
>> >> wrote:
>> >> >
>> >> > Hi Pedro.
>> >> >
>> >> > The export works as expected *without* loading auctex. It also works as
>> >> > expected *with* loading auctex, but with TeX-parse-self to nil. Perhaps
>> >> > the best solution is to amend org-latex-export-as-latex to set
>> >> > TeX-parse-self to nil before calling LaTeX-mode, e.g., with (let
>> >> > ((TeX-parse-self nil)) <rest of the org-latex-export-as-latex code
>> >> > here>). To be honest, I'm not sure if this is a bug of org or
>> >> > reftex-auc. What do you think?
>> >> >
>> >> >
>> >> > On Fri, 27 Jun 2025 at 16:41, Pedro Andres Aranda Gutierrez
>> >> > <paag...@gmail.com> wrote:
>> >> >>
>> >> >> Vangelis writes:
>> >> >>
>> >> >> > Hello.
>> >> >> >
>> >> >> > I started with emacs -q. Then in the scratch buffer, I evaluated the
>> >> >> > following code
>> >> >> >
>> >> >> > (use-package reftex-auc)
>> >> >> > (use-package tex
>> >> >> > :load-path "site-lisp/auctex-14.0.9"
>> >> >> > :custom
>> >> >> > (TeX-parse-self t))
>> >> >> >
>> >> >> > Then, I created an org buffer which I exported to latex buffer (C-c
>> >> >> > C-e l
>> >> >> > L). I get the error message
>> >> >> >
>> >> >> > reftex-TeX-master-file: Wrong type argument: stringp, nil
>> >> >>
>> >> >> Hi,
>> >> >>
>> >> >> could you please try the export part again *without* loading auctex?
>> >> >> It looks like the LaTeX exporter is not generating that thing, which I
>> >> >> guess is a file local variable.
>> >> >>
>> >> >> I remember never having time enough to procrastinate to cope with all
>> >> >> the quirks of auctex while writing my PhD - some time ago ;-) - and
>> >> >> going the "pure" LaTeX way with some yasnippets and a bit of code to
>> >> >> emulate the couple of features people loved from auctex as a viable
>> >> >> alternative.
>> >> >>
>> >> >> Maybe that could be a project once the PDF exporter reaches master...
>> >> >>
>> >> >> Thx, /PA
>> >> >>
>> >> >> --
>> >> >> Fragen sind nicht da, um beantwortet zu werden,
>> >> >> Fragen sind da um gestellt zu werden
>> >> >> Georg Kreisler
>> >> >>
>> >> >> Sagen's Paradeiser, write BE!
>> >> >> Year 1 of the New Koprocracy
>> >>
>> >>
>> >>
>> >> --
>> >> Fragen sind nicht da, um beantwortet zu werden,
>> >> Fragen sind da um gestellt zu werden
>> >> Georg Kreisler
>> >>
>> >> Sagen's Paradeiser, write BE!
>> >> Year 1 of the New Koprocracy
>>
>>
>>
>> --
>> Fragen sind nicht da, um beantwortet zu werden,
>> Fragen sind da um gestellt zu werden
>> Georg Kreisler
>>
>> Sagen's Paradeiser, write BE!
>> Year 1 of the New Koprocracy
--
Fragen sind nicht da, um beantwortet zu werden,
Fragen sind da um gestellt zu werden
Georg Kreisler
Sagen's Paradeiser, write BE!
Year 1 of the New Koprocracy
