Jeff King <> writes:

> I think it has always been the case that we export them after setting
> them; just look at the preimage from 3c730fab, and you can see exports
> there.

Yeah, I think the only difference is a broken commit case where sed
expression did not find what it was looking for, in which case we do
not do the export.

> I think the advice in the documentation about re-exporting is because
> some versions of the bourne shell will not reliably pass the new version
> of the variable ...

Ahh, old and painful memory of Solaris days comes back to me.  OK,
let's keep the export then.

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