bug#69404: Loss of latex-mode fontification when loading libraries in latex-mode-hook that require json-mode

[Gabriele Nicolardi]

Il 26/02/24 14:03, Eli Zaretskii ha scritto:
> > Date: Mon, 26 Feb 2024 10:27:53 +0100
> > From: Gabriele Nicolardi <gabriele@medialab.sissa.it>
> >
> > I have a LaTeX file:
> >
> > \documentclass{article}
> > \usepackage{mwe}
> > \begin{document}
> >
> > \blindtext
> >
> > \noindent
> > \includegraphics[width=.4\textwidth]{example-image-a}\hfill
> > \includegraphics[width=.4\textwidth]{example-image-b}
> >
> > \blindtext
> >
> > \end{document}
> >
> > If I load it like this:
> >
> > emacs -Q test.tex
> >
> > I get this “correct” latex-mode fontification:
> >
> > I have also a config file (I simplified it to obtain the feature):
> >
> > (add-hook 'latex-mode-hook
> >            #'(lambda ()
> >            (package-initialize)
> >            (require 'json-mode)))
> >
> > If I load my .tex file like this:
> >
> > emacs -Q --eval "(load-file \"/tmp/config.el\")" test.tex
> >
> > I lose latex-mode fontification:
> What is the value of major-mode after you load your .tex file as
> above?

In the buffer loaded as above, with the wrong fontification, I have:

major-mode is a variable defined in ‘C source code’.


Its value is ‘latex-mode’
Original value was ‘fundamental-mode’
Local in buffer test.tex; global value is fundamental-mode