test-lib: add in-shell "env" replacement

diff --git a/t/t5300-pack-object.sh b/t/t5300-pack-object.sh
index fc2be63e02d85682cd24457ee646c8c626ca967a..899e52d50f0d73e4a755c4f7991364f34912b336 100755 (executable)
--- a/t/t5300-pack-object.sh
+++ b/t/t5300-pack-object.sh
@@ -284,6 +284,12 @@ test_expect_success \
      git index-pack test-3.pack &&
      cmp test-3.idx test-3-${packname_3}.idx &&
 
+     cat test-1-${packname_1}.pack >test-4.pack &&
+     rm -f test-4.keep &&
+     git index-pack --keep=why test-4.pack &&
+     cmp test-1-${packname_1}.idx test-4.idx &&
+     test -f test-4.keep &&
+
      :'
 
 test_expect_success 'unpacking with --strict' '