Exception occurred when make latex on getfem.git

[tkoyama010]

Exception occurred
Exception occurred when compile latex document in project getfem.

To Reproduce

$ git clone https://git.savannah.nongnu.org/git/getfem.git
$ cd getfem
$ git checkout devel-tetsuo-VersionUp-sphinx
$ bash autogen.sh
$ ./configure
$ cd doc/sphinx/
$ make latex

Expected behavior
Exception occurred:
File "/usr/lib/python2.7/dist-packages/sphinx/writers/latex.py", line 706, in check_latex_elements
logger.warning(msg % key)
TypeError: not all arguments converted during string formatting
The full traceback has been saved in /tmp/sphinx-err-6HUGqT.log, if you want to report the issue to the developers.
Please also report this if it was a user error, so that a better error message can be provided next time.
A bug report can be filed in the tracker at https://github.com/sphinx-doc/sphinx/issues. Thanks!.

Your project
http://getfem.org/

Screenshots
None

Environment info

• OS: [Ubuntu18.10]
• Python version: [2.7.15]
• Sphinx version: [1.7.9]
• Sphinx extensions: ['sphinx.ext.imgmath', 'sphinx.ext.autodoc', 'sphinx.ext.coverage', 'sphinx.ext.doctest']
• Extra tools: [docutils == 0.11 jinja2 == 2.3.1 pygments == 1.6]

Additional context
sphinx-err-6HUGqT.log

[tkoyama010]

Same error occured also in v1.8.4.
sphinx-err-BwoVYi.log

[jfbu]

I did not test (my g++ compiler is too old for ./configure to be happy; besides the Makefile hardcodes in ~/.local/bin location of sphinx-build if I am not wrong,).

I noticed

latex_elements = {
    'preamble': 'user_preamble',
}

in your conf.py, which will lead to other problems it should be

latex_elements = {
    'preamble':  user_preamble,
}

This should not be related to your problem and it will show only at time of executing pdflatex on the produced tex files. You also have

\\usepackage[draft]{minted}\\fvset{breaklines=true}

which seems unneeded. Package minted hacks fancyvrb to add this breaklines=true option, but Sphinx for a long time (I think 1.4.2, May 2016) wraps long code lines. You don't need this line.

[tk0miya]

It seems your project defines invalid latex_elements. And it is a cause of the TypeError.

latex_elements = [
    ('preamble',user_preamble),
]

http://git.savannah.nongnu.org/cgit/getfem.git/tree/doc/sphinx/source/conf.py#n298

So please update your configuration.

On the other hand, the TypeError is raised from LaTeX builder. And we can fix it easily. So I'll work for it.

[tk0miya]

I just fixed about crash in #6050. It does not means to accept wrong configuration of getfem. Please update your conf.py.
Thank you for reporting.

[tkoyama010]

I've confirmed. Thank you for fixing.