How to get the percent sign using the latex moodle package

Question

I'm preparing a quiz for moodle using the moodle package (+ LuaLaTeX).
When I input a percentage in the usual way (i.e. 40,%), the LaTeX render is OK but the backslash is passed along to moodle and appears in the text:

As a workaround, I redefined % to be char"0025 but this doesn't work since the moodle package just doesn't care.
I haven't found any relevant entry in the manual.
Any suggestion?
MWE:
documentclass{article}
usepackage{moodle}
begin{document}
begin{quiz}{Révisions}
begin{numerical}
Calculer 40,% de 120.
item 48
end{numerical}
end{quiz}
end{document}

EDIT
After adding
makeatletter%
html@action@def%g@addto@macrohtmlize@output{otherpercent}}%
makeatother

to the preamble as suggested by @mgk in the comments, the percent sign is now correctly rendered in the question text but the backslash remains present in any answer text.

documentclass{article}
usepackage{moodle}
makeatletterhtml@action@def%{g@addto@macrohtmlize@output{otherpercent}}makeatother
begin{document}
begin{quiz}{Révisions}
begin{shortanswer}{Q1}
Enter the string texttt{"40%"}.
item 40%
end{shortanswer}
end{quiz}
end{document}

mgk · Accepted Answer

You run into two problems with version 0.8 of the moodle package. The macro % is not declared for conversion to HTML. The answers of shortanswer questions are passed as-is to the XML without going through conversion to HTML. You can solve both by adding this code to the preamble, after loading moodle. makeatletter html@action@def%{g@addto@macrohtmlize@output{otherpercent}} defsaveshortansweranswer@int@int#1moodle@answer@rdelim{% defmoodle@answertext{#1}% trim@spaces@inmoodle@answertext moodle@checkfraction addto@xml[2]{moodle@answers@xml}{}% xaconverttohtmlmacroxamoodle@answertext@htmlxa{moodle@answertext}% addto@xml[4]{moodle@answers@xml}{ moodle@answertext@html}% ifxmoodle@feedback@emptyrelaxelse trim@spaces@inmoodle@feedback xaconverttohtmlmacroxamoodle@feedback@htmlxa{moodle@feedback}% addto@xml[4]{moodle@answers@xml}{ moodle@feedback@html

]]>}% fi addto@xml[2]{moodle@answers@xml}{}% }% makeatother With this patch, the following example questions gave satisfactory results (compilation with version 0.8 of moodle, Moodle LMS import, and question test on Moodle) : begin{shortanswer}{Q1} Enter the string texttt{"40%"}. item[fraction=100,feedback={correct}] 40% item[fraction=50,feedback={incomplete}] 40 item[fraction=50,feedback={incomplete}] % end{shortanswer} begin{cloze}{Q2} begin{shortanswer} Enter the string texttt{"40%"}. item[fraction=100,feedback={correct}] 40% item[fraction=50,feedback={incomplete}] 40 item[fraction=50,feedback={incomplete}] % end{shortanswer} end{cloze} Problem 1. was recently solved in the development version of the package. I opened an issue for Problem 2. It should be resolved soon.

How to get the percent sign using the latex moodle package

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