[PATCH v2 0/2] Documentation: filter-branch env-filter example

Hello,

Indeed the use case proposed by Junio C. Hamano is more realistic than mine.

I also included a minor clarification of how identity environment variables are
used to cover the edge case raised by Jeff King. As far as the need to export
those variables goes, I saw the wrong behavior on Solaris.

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Tadeusz Andrzej Kadłubowski