Add \usepackage[utf8]{inputenc} to template?

[bernhard-thiele]

For building the example-paper on Ubuntu 18.04.5 LTS I need to add the line \usepackage[utf8]{inputenc}.
Not sure if this is due to possible "outdated" packages, but I need to do something like

\documentclass{modelica}
\usepackage[utf8]{inputenc}
\addbibresource{example-paper.bib}

Should we change the template?

[sjoelund]

Which unicode character did you have problem with? Greek and most western languages work by default as UTF-8 for me. Only Chinese text is a problem (but utf8 inputenc does not resolve that issue).
I am on texlive from Ubuntu 20.04.

[bernhard-thiele]

The error seems to be due to biber. If I build the example latex file I get the following error:

------------
Run number 1 of rule 'biber example-paper'
------------
------------
Running 'biber  "example-paper"'
------------
INFO - This is Biber 2.9
INFO - Logfile is 'example-paper.blg'
INFO - Reading 'example-paper.bcf'
INFO - Found 14 citekeys in bib section 0
INFO - Processing section 0
INFO - Looking for bibtex format file 'example-paper.bib' for section 0
ERROR - Data file 'example-paper.bib' cannot be read in encoding 'ascii': ascii "\xC3" does not map to Unicode at /usr/share/perl5/File/Slurper.pm line 59.

INFO - ERRORS: 1
Biber error: [78] Utils.pm:185> ERROR - Data file 'example-paper.bib' cannot be read in encoding 'ascii': ascii "\xC3" does not map to Unicode at /usr/share/perl5/File/Slurper.pm line 59.
Latexmk: Found biber source file(s) [example-paper.bcf]
Latexmk: Errors, so I did not complete making targets
Collected error summary (may duplicate other messages):
  biber example-paper: Biber errors: See file 'example-paper.blg'
Latexmk: Use the -f option to force complete processing,
 unless error was exceeding maximum runs of latex/pdflatex.
Makefile:8: recipe for target 'example-paper.pdf' failed
make: *** [example-paper.pdf] Error 12

If I use \usepackage[utf8]{inputenc} or \usepackage[utf8]{luainputenc} the problem is gone.

[sjoelund]

That's odd. I was pretty sure that I checked different older texlive versions in docker. I guess it should be added to the example-paper.tex and not the modelica.cls though (since inputenc stuff are things you often have to deal with as the user). Or do you think it belongs in the class?

[bernhard-thiele]

I also think it should be in the example-paper.tex rather than in the class.