Re: Failed to skip from chapter tex file to master pdf file.

[Hongyi Zhao]

On Mon, Jul 12, 2021 at 1:08 PM Tassilo Horn <tsdh@gnu.org> wrote:
>
> Hongyi Zhao <hongyi.zhao@gmail.com> writes:
>
> >> > Or as a first step, you could also find the master file and all chapter
> >> > files and eval the following in *stratch* and post the output:
> >> >
> >> > (delq nil (mapcar (lambda (buf)
> >> >                     (with-current-buffer buf
> >> >                       (when (eq major-mode 'latex-mode)
> >> >                         (cons (buffer-file-name buf)
> >> >                               (TeX-master-file "pdf")))))
> >> >                   (buffer-list)))
> >>
> >> See below:
> >>
> >> (delq nil (mapcar (lambda (buf)
> >>                     (with-current-buffer buf
> >>                       (when (eq major-mode 'latex-mode)
> >>                         (cons (buffer-file-name buf)
> >>                               (TeX-master-file "pdf")))))
> >>                   (buffer-list)))
> >> (("/home/werner/Public/hpc/tools/thesis/gitlab.kwant-project.org/jbweston/thesis.git/thesis.tex"
> >> . "thesis.pdf"))
>
> Here it seems that you've just had thesis.tex open in a buffer but not
> the chapter files.  I've asked you to "find the master file and *all
> chapter files* and eval the following in *stratch*".
>

Sorry for my misunderstanding. Really, it can pinpoint the problem:

(delq nil (mapcar (lambda (buf)
                    (with-current-buffer buf
                      (when (eq major-mode 'latex-mode)
                        (cons (buffer-file-name buf)
                              (TeX-master-file "pdf")))))
                  (buffer-list)))
(("/home/werner/Public/hpc/tools/thesis/gitlab.kwant-project.org/jbweston/thesis.git/content/josephson.tex"
. "josephson.pdf")
("/home/werner/Public/hpc/tools/thesis/gitlab.kwant-project.org/jbweston/thesis.git/content/appendix.tex"
. "../thesis.pdf")
("/home/werner/Public/hpc/tools/thesis/gitlab.kwant-project.org/jbweston/thesis.git/thesis.tex"
. "thesis.pdf"))

As you can see, only the chapter/master files which have been set the
correct TeX-master variable will report the correct master PDF file.

> > Why can't `(La)TeX-mode' return the correct result:
> >
> > (delq nil (mapcar (lambda (buf)
> >                     (with-current-buffer buf
> >                       (when (eq major-mode 'TeX-mode)
> >                         (cons (buffer-file-name buf)
> >                               (TeX-master-file "pdf")))))
> >                   (buffer-list)))
>
> Because the symbols latex-mode and LaTeX-mode or TeX-mode are not `eq'
> (identical).  `major-mode' is just a symbol, and in an AUCTeX LaTeX
> buffer it'll be set to `latex-mode'.

But see the following statement on
<https://www.gnu.org/software/emacs/manual/html_node/reftex/Installation.html>:

```
1.1.3 Entering RefTeX Mode

To turn RefTeX Mode on and off in a particular buffer, use M-x
reftex-mode RET. To turn on RefTeX Mode for all LaTeX files, add the
following lines to your .emacs file:

(add-hook 'LaTeX-mode-hook 'turn-on-reftex)   ; with AUCTeX LaTeX mode
(add-hook 'latex-mode-hook 'turn-on-reftex)   ; with Emacs latex mode
```

It says that the AUCTeX LaTeX mode should be called `LaTeX-mode',
while the Emacs latex mode is called `latex-mode'

Any hints on this description?

Regards
-- 
Assoc. Prof. Hongyi Zhao <hongyi.zhao@gmail.com>
Theory and Simulation of Materials
Hebei Vocational University of Technology and Engineering
No. 473, Quannan West Street, Xindu District, Xingtai, Hebei province