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

[Hongyi Zhao]

On Mon, Jul 12, 2021 at 8:25 AM Hongyi Zhao <hongyi.zhao@gmail.com> wrote:
>
> On Mon, Jul 12, 2021 at 8:21 AM Hongyi Zhao <hongyi.zhao@gmail.com> wrote:
> >
> > On Mon, Jul 12, 2021 at 3:19 AM Tassilo Horn <tsdh@gnu.org> wrote:
> > >
> > > Hongyi Zhao <hongyi.zhao@gmail.com> writes:
> > >
> > > >> > ```
> > > >> > epdfinfo: Error opening
> > > >> > /home/werner/Public/hpc/tools/thesis/gitlab.kwant-project.org/jbweston/thesis.git/content/conclusion.pdf:No
> > > >> > such file or directory
> > > >>
> > > >> What would be the right filename?  The project looks like thesis.tex is
> > > >> the master file so I'd assume the pdf would be thesis.pdf and not
> > > >> conclusion.pdf which is just some included chapter in content/.
> > > >
> > > > Yes. "thesis.tex" is the master file, and "thesis.pdf" is the
> > > > generated pdf file name.
> > >
> > > So this would be the right filename, I guess.
> > >
> > > /home/werner/Public/hpc/tools/thesis/gitlab.kwant-project.org/jbweston/thesis.git/content/thesis.pdf
> >
> > According to the file directory hierarchy, it should be the following:
> >
> > /home/werner/Public/hpc/tools/thesis/gitlab.kwant-project.org/jbweston/thesis.git/thesis.pdf
> >
> > >
> > > >> What are your TeX-master values?  It should be t in thesis.tex and
> > > >> "../thesis" in the sub-files in content/.  From the error above, I'd
> > > >> guess you've told AUCTeX that conclusion.tex was the master file and
> > > >> pdf-tools uses the value of TeX-master and thus assumes
> > > >> conclusion.pdf was the generated pdf.
> > > >
> > > > See below:
> > > >
> > > > $ tail -5 ./thesis.tex
> > > >
> > > > %%% TeX-master: t
> > > >
> > > > $ tail -5 content/publications.tex
> > > >
> > > > %%% TeX-master: ../thesis
> > > >
> > > > But still meet the error:
> > > >
> > > > ```
> > > > epdfinfo: Error opening
> > > > /home/werner/Public/hpc/tools/thesis/gitlab.kwant-project.org/jbweston/thesis.git/content/publications.pdf:No
> > > > such file or directory
> > >
> > > Phew, this time it is publications.pdf, last time it was conclusion.pdf.
> > > Have you also looked at the actual variable values using `C-h v
> > > TeX-master'?
> >
> > I'm just trying with different chapter files to inspect this problem.
> >
> > > If the TeX-master values look right, I guess you will need to edebug the
> > > pdf-tools functions `pdf-sync-forward-search' and
> > > `pdf-sync-forward-correlate'.  Especially, the latter calls the AUCTeX
> > > function (TeX-master-file "pdf") to determine the name of the pdf.
> > >
> > > 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"))
>
> 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)))
> nil
>
> (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)))
> nil

This is just out of the curiosity about the behavior of the `delq'
built-in function used above. According to the built-in document:

```
(delq ELT LIST)
Delete members of LIST which are ‘eq’ to ELT, and return the result.
More precisely, this function skips any members ‘eq’ to ELT at the
front of LIST, then removes members ‘eq’ to ELT from the remaining
sublist by modifying its list structure, then returns the resulting
list.
```
So, in the above code snippet, the `nil' will be deleted, but why is
it still returned?

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