Re: [PATCH] t/: work around one-shot variable assignment with test_must_fail

Ævar Arnfjörð Bjarmason wrote:

We should have examples for both export and unset

What is unportable for “export” is the effect of exporting an unset
variable.  I am not even sure whether the return value is unportable,
but it doesn’t matter; that is an example of a “Don’t” rather than a
“Do it this way”.

See v1.5.6-rc0~61 (filter-branch: fix variable export logic,
2008-05-13) for an example.

but the prose
should mention both IMO

Yes, thanks for putting this portability guide together.

Jonathan