Posted by roxlu on Mar 10, 2020; 8:45am
URL: https://discuss.asciidoctor.org/How-to-do-calculations-using-variables-tp7728p7743.html

Yes, that would be an option.

But doing something like what is discussed here https://github.com/asciidoctor/asciidoctor/issues/1016 would be great;

I'm not sure if this feature is avaible in some way. I did not see a specific extension.