Source: developers-reference Version: 11.0.20 "Any atter suffix". I am guessing you meant to use the word "other", since "atter" is archaic or dialectal English according to my dictionary.
https://salsa.debian.org/debian/developers-reference/-/commit/33fc4a914 https://www.debian.org/doc/manuals/developers-reference/best-pkging-practices.html#bpp-origtargz https://en.wiktionary.org/wiki/atter Thanks, Jeremy Bicha
