[TUHS] copyright maximalism, was History of cal(1)?

[John Levine via TUHS]

It appears that Dave Horsfall via TUHS <dave at horsfall.org> said:
>Heck; at one time the "true" command was a Shell script with a huge
>copyright notice, followed by... nothing...  

$ /bin/true --version
true (GNU coreutils) 8.32
Copyright (C) 2020 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <https://gnu.org/licenses/gpl.html>.
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.

Written by Jim Meyering.