t3404: fix use of "VAR=VAL cmd" with a shell function

Bash may take it happily but running test with dash reveals a breakage.

This was not discovered for a long time as no tests after this test
depended on GIT_AUTHOR_NAME to be reverted correctly back to the
original value after this step is done.

Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/t/t3404-rebase-interactive.sh b/t/t3404-rebase-interactive.sh
index 481a3500900d0fccb28762ba24b2ca422956a44f..489b6196e0748997f0e06ff36bf07a6e0a1de4e5 100755 (executable)
--- a/t/t3404-rebase-interactive.sh
+++ b/t/t3404-rebase-interactive.sh
@@ -256,11 +256,18 @@ test_expect_success 'retain authorship' '
 '
 
 test_expect_success 'retain authorship w/ conflicts' '
+       oGIT_AUTHOR_NAME=$GIT_AUTHOR_NAME &&
+       test_when_finished "GIT_AUTHOR_NAME=\$oGIT_AUTHOR_NAME" &&
+
        git reset --hard twerp &&
        test_commit a conflict a conflict-a &&
        git reset --hard twerp &&
-       GIT_AUTHOR_NAME=AttributeMe \
+
+       GIT_AUTHOR_NAME=AttributeMe &&
+       export GIT_AUTHOR_NAME &&
        test_commit b conflict b conflict-b &&
+       GIT_AUTHOR_NAME=$oGIT_AUTHOR_NAME &&
+
        set_fake_editor &&
        test_must_fail git rebase -i conflict-a &&
        echo resolved >conflict &&