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Use newly-introduced finely-grained control to teach the diff-family to honor the new environment GIT_PRINT_SHA1_ELLIPSIS and remove the ellipses when it is not set. Mentored-by: Junio C Hamano <gitster@pobox.com> Signed-off-by: Ann T Ropea <bedhanger@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
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