Hello, the attached test file works fine with pdftex, but has problems with luatex[1]. When trying to use @...char macros within anchors, @atchar breaks compilation (luatex claims that it is undefined), and the others seem to entail parsing problems, and produce weird output in the PDF.
test.texi
Description: application/texinfo
Footnotes: [1] latest texinfo.tex, luatex Version 1.10.0 (TeX Live 2019) -- Resistance is futile. You will be jazzimilated. Lisp, Jazz, Aïkido: http://www.didierverna.info
