I think Linus himself recommended at some point that 50 character subject restriction (in a time when 80 character wide code lines were also still a recommendat

I think Linus himself recommended at some point that 50 character subject restriction (in a time when 80 character wide code lines were also still a recommendation). That wouldn't be important in itself, but Github trims your message at 50 characters as well. Because of that "feature" alone it's annoying to pass that limit.