Re: [PATCH] git-add--interactive: manual hunk editing mode

Jeff King [off-list ref] writes:

According to Module::CoreList, File::Temp has shipped as part of core
perl since 5.006001. "add -i" doesn't work with perl < 5.6 already due to
things like 3-argument open.

So if the problem is "old perl", I don't think it is an issue. Are there
modern perl installations in the wild that don't have File::Temp?

The thing is, I think I heard quite similar explanation why Test::More is
safe to use when the patch to add t/t9700 was submit.  Then what happened?