Libvirt is a good example of what upstream project should do: properly identify contributors in git log: https://github.com/libvirt/libvirt/commits/master/po
I wonder which part of the 594 contributors listed in github are translators.
I assume if there is a credits somewhere in the software, it also lists contributors.
To my knowledge, libvirt is an exception, and translator credits is often missing, which may lead translators to feel like second-zone contributors.
I do prefer to have a simple header to read a contributors, because: * translators copy/share po files to for translation memories purposes (which removes the git history) * git knowledge should not be required to get it touch with other translators
But this is a personal belief, and we should not impose our beliefs.
Having the "contributor in comment" plugin enabled by default on the Fedora translation platform is fine to me, as long as we inform project maintainers, and allow them to disable it if they have another clean way to properly identify contributors.
The challenging question I see is: what do we do if there is no translator credits either in git log or file header?