Correct, no defaults are given. Attached is v2. Defaults non existent, append/cons* irrelevant. thanks in advance, muradm Liliana Marie Prikler writes: > Am Freitag, dem 05.08.2022 um 09:44 +0300 schrieb muradm: >> supplimentary-groups receiving a list, so I find it more >> informative when adding apples with apples. And yes with high >> enough >> chance more groups could be added to the list of defaults. > What are "the defaults" here, though? A sequence of hard-coded > values > known at compile time. There is no need to make that sequence a > list. > >> Is there any preference on using cons* in favour of more >> readable >> append? > Use of cons or cons* signals that you are only expecting > user-supplied > groups to be a list and everything else known values. Use of > append on > the other hand signals that you are expecting multiple lists, > which > even if you did are not currently present. > > Cheers