Re: [RFC PATCH] Introduce "precious" file concept

Ævar Arnfjörð Bjarmason [off-list ref] writes:

quoted

Or only selected "*.o" (vendor supplied binary blob) kept tracked
while everything else is built from the source.
...

But it also does get used for "mostly we don't want this file, but
sometimes we do" use-case, so that's something we need to deal with in
practice.

Exactly.  "Mostly we don't want *.o as we prefer to build from the
source, but we have only object files for some selected ones" is an
often cited use case where it is the BCP to have *.o in .gitignore
and use "add -f" to add the "selected" ones initially.