for_each_abbrev: drop duplicate objects

diff --git a/t/t1512-rev-parse-disambiguation.sh b/t/t1512-rev-parse-disambiguation.sh
index dfd356721eeb55b13c5c51075b9bd28b8e1997e7..1d8f550996caf0207a25fcf7d0901aa51dc41f0d 100755 (executable)
--- a/t/t1512-rev-parse-disambiguation.sh
+++ b/t/t1512-rev-parse-disambiguation.sh
@@ -280,6 +280,13 @@ test_expect_success 'rev-parse --disambiguate' '
        test "$(sed -e "s/^\(.........\).*/\1/" actual | sort -u)" = 000000000
 '
 
+test_expect_success 'rev-parse --disambiguate drops duplicates' '
+       git rev-parse --disambiguate=000000000 >expect &&
+       git pack-objects .git/objects/pack/pack <expect &&
+       git rev-parse --disambiguate=000000000 >actual &&
+       test_cmp expect actual
+'
+
 test_expect_success 'ambiguous 40-hex ref' '
        TREE=$(git mktree </dev/null) &&
        REF=$(git rev-parse HEAD) &&