[OS X TeX] \jobname works in 2013 but not in 2020

[Alain Schremmer]

So, I gave up and now have a new old Mac running TeX Live 2020 under HighSierra alongside the old old Mac running TeX Live 2013 under Snow Leopard.

(Schultz, if you so much as smile, I will drink that case of beer you have yet to pick up which will make me sick as I rather drink wine and that will be on your head.)

I have attached a MWE that works fine with TeX Live 2013 under Snow Leopard but not with TeX Live 2020 under High Sierra.

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I really don?t want to change my file setup so I think I really need \jobname.

Best to all,
?schremmer