(command.CommandList
  children: [
    (command.ShAssignment
      pairs: [
        (assign_pair
          lhs: (sh_lhs_expr.Name name:test_description)
          op: assign_op.Equal
          rhs: {(SQ <'git repack works correctly'>)}
          spids: [4]
        )
      ]
    )
    (C {<.>} {<'./test-lib.sh'>})
    (command.ShAssignment
      pairs: [
        (assign_pair
          lhs: (sh_lhs_expr.Name name:fsha1)
          op: assign_op.Equal
          rhs: (word.Empty)
          spids: [15]
        )
      ]
    )
    (command.ShAssignment
      pairs: [
        (assign_pair
          lhs: (sh_lhs_expr.Name name:csha1)
          op: assign_op.Equal
          rhs: (word.Empty)
          spids: [17]
        )
      ]
    )
    (command.ShAssignment
      pairs: [
        (assign_pair
          lhs: (sh_lhs_expr.Name name:tsha1)
          op: assign_op.Equal
          rhs: (word.Empty)
          spids: [19]
        )
      ]
    )
    (C {<test_expect_success>} {(SQ <'-A with -d option leaves unreachable objects unpacked'>)} 
      {
        (SQ <'\n'> <'\techo content > file1 &&\n'> <'\tgit add . &&\n'> <'\ttest_tick &&\n'> 
          <'\tgit commit -m initial_commit &&\n'> <'\t# create a transient branch with unique content\n'> <'\tgit checkout -b transient_branch &&\n'> 
          <'\techo more content >> file1 &&\n'> <'\t# record the objects created in the database for file, commit, tree\n'> 
          <'\tfsha1=$(git hash-object file1) &&\n'> <'\ttest_tick &&\n'> <'\tgit commit -a -m more_content &&\n'> 
          <'\tcsha1=$(git rev-parse HEAD^{commit}) &&\n'> <'\ttsha1=$(git rev-parse HEAD^{tree}) &&\n'> <'\tgit checkout master &&\n'> 
          <'\techo even more content >> file1 &&\n'> <'\ttest_tick &&\n'> <'\tgit commit -a -m even_more_content &&\n'> 
          <'\t# delete the transient branch\n'> <'\tgit branch -D transient_branch &&\n'> <'\t# pack the repo\n'> <'\tgit repack -A -d -l &&\n'> 
          <'\t# verify objects are packed in repository\n'> <'\ttest 3 = $(git verify-pack -v -- .git/objects/pack/*.idx |\n'> 
          <'\t\t   egrep "^($fsha1|$csha1|$tsha1) " |\n'> <'\t\t   sort | uniq | wc -l) &&\n'> <'\tgit show $fsha1 &&\n'> <'\tgit show $csha1 &&\n'> 
          <'\tgit show $tsha1 &&\n'> <'\t# now expire the reflog, while keeping reachable ones but expiring\n'> 
          <'\t# unreachables immediately\n'> <'\ttest_tick &&\n'> <'\tsometimeago=$(( $test_tick - 10000 )) &&\n'> 
          <'\tgit reflog expire --expire=$sometimeago --expire-unreachable=$test_tick --all &&\n'> <'\t# and repack\n'> <'\tgit repack -A -d -l &&\n'> <'\t# verify objects are retained unpacked\n'> 
          <'\ttest 0 = $(git verify-pack -v -- .git/objects/pack/*.idx |\n'> <'\t\t   egrep "^($fsha1|$csha1|$tsha1) " |\n'> <'\t\t   sort | uniq | wc -l) &&\n'> 
          <'\tgit show $fsha1 &&\n'> <'\tgit show $csha1 &&\n'> <'\tgit show $tsha1\n'>
        )
      }
    )
    (command.ShFunction
      name: compare_mtimes
      body: 
        (BraceGroup
          children: [
            (command.AndOr
              ops: [Id.Op_DAmp]
              children: [
                (C {<read>} {<tref>} {<rest>})
                (command.WhileUntil
                  keyword: <Id.KW_While while>
                  cond: 
                    (condition.Shell
                      commands: [
                        (command.Sentence
                          child: (C {<read>} {<t>} {<rest>})
                          terminator: <Id.Op_Semi _>
                        )
                      ]
                    )
                  body: 
                    (command.DoGroup
                      children: [
                        (command.AndOr
                          ops: [Id.Op_DPipe]
                          children: [
                            (C {<test>} {(DQ ($ Id.VSub_DollarName '$tref'))} {<Id.Lit_Equals '='>} 
                              {(DQ ($ Id.VSub_DollarName '$t'))}
                            )
                            (command.ControlFlow
                              token: <Id.ControlFlow_Return return>
                              arg_word: {<1>}
                            )
                          ]
                        )
                      ]
                    )
                )
              ]
            )
          ]
        )
    )
    (C {<test_expect_success>} {(SQ <'-A without -d option leaves unreachable objects packed'>)} 
      {
        (SQ <'\n'> <'\tfsha1path=$(echo "$fsha1" | sed -e "s|\\(..\\)|\\1/|") &&\n'> 
          <'\tfsha1path=".git/objects/$fsha1path" &&\n'> <'\tcsha1path=$(echo "$csha1" | sed -e "s|\\(..\\)|\\1/|") &&\n'> 
          <'\tcsha1path=".git/objects/$csha1path" &&\n'> <'\ttsha1path=$(echo "$tsha1" | sed -e "s|\\(..\\)|\\1/|") &&\n'> 
          <'\ttsha1path=".git/objects/$tsha1path" &&\n'> <'\tgit branch transient_branch $csha1 &&\n'> <'\tgit repack -a -d -l &&\n'> 
          <'\ttest ! -f "$fsha1path" &&\n'> <'\ttest ! -f "$csha1path" &&\n'> <'\ttest ! -f "$tsha1path" &&\n'> 
          <'\ttest 1 = $(ls -1 .git/objects/pack/pack-*.pack | wc -l) &&\n'> <'\tpackfile=$(ls .git/objects/pack/pack-*.pack) &&\n'> <'\tgit branch -D transient_branch &&\n'> 
          <'\ttest_tick &&\n'> <'\tgit repack -A -l &&\n'> <'\ttest ! -f "$fsha1path" &&\n'> <'\ttest ! -f "$csha1path" &&\n'> 
          <'\ttest ! -f "$tsha1path" &&\n'> <'\tgit show $fsha1 &&\n'> <'\tgit show $csha1 &&\n'> <'\tgit show $tsha1\n'>
        )
      }
    )
    (C {<test_expect_success>} {(SQ <'unpacked objects receive timestamp of pack file'>)} 
      {
        (SQ <'\n'> <'\ttmppack=".git/objects/pack/tmp_pack" &&\n'> <'\tln "$packfile" "$tmppack" &&\n'> 
          <'\tgit repack -A -l -d &&\n'> <'\ttest-chmtime -v +0 "$tmppack" "$fsha1path" "$csha1path" "$tsha1path" \\\n'> <'\t\t> mtimes &&\n'> 
          <'\tcompare_mtimes < mtimes\n'>
        )
      }
    )
    (C {<test_expect_success>} {(SQ <'do not bother loosening old objects'>)} 
      {
        (SQ <'\n'> <'\tobj1=$(echo one | git hash-object -w --stdin) &&\n'> 
          <'\tobj2=$(echo two | git hash-object -w --stdin) &&\n'> <'\tpack1=$(echo $obj1 | git pack-objects .git/objects/pack/pack) &&\n'> 
          <'\tpack2=$(echo $obj2 | git pack-objects .git/objects/pack/pack) &&\n'> <'\tgit prune-packed &&\n'> <'\tgit cat-file -p $obj1 &&\n'> <'\tgit cat-file -p $obj2 &&\n'> 
          <'\ttest-chmtime =-86400 .git/objects/pack/pack-$pack2.pack &&\n'> <'\tgit repack -A -d --unpack-unreachable=1.hour.ago &&\n'> <'\tgit cat-file -p $obj1 &&\n'> 
          <'\ttest_must_fail git cat-file -p $obj2\n'>
        )
      }
    )
    (C {<test_expect_success>} {(SQ <'keep packed objects found only in index'>)} 
      {
        (SQ <'\n'> <'\techo my-unique-content >file &&\n'> <'\tgit add file &&\n'> 
          <'\tgit commit -m "make it reachable" &&\n'> <'\tgit gc &&\n'> <'\tgit reset HEAD^ &&\n'> <'\tgit reflog expire --expire=now --all &&\n'> 
          <'\tgit add file &&\n'> <'\ttest-chmtime =-86400 .git/objects/pack/* &&\n'> <'\tgit gc --prune=1.hour.ago &&\n'> 
          <'\tgit cat-file blob :file\n'>
        )
      }
    )
    (C {<test_expect_success>} {(SQ <'repack -k keeps unreachable packed objects'>)} 
      {
        (SQ <'\n'> <'\t# create packed-but-unreachable object\n'> 
          <'\tsha1=$(echo unreachable-packed | git hash-object -w --stdin) &&\n'> <'\tpack=$(echo $sha1 | git pack-objects .git/objects/pack/pack) &&\n'> <'\tgit prune-packed &&\n'> 
          <'\n'> <'\t# -k should keep it\n'> <'\tgit repack -adk &&\n'> <'\tgit cat-file -p $sha1 &&\n'> <'\n'> 
          <'\t# and double check that without -k it would have been removed\n'> <'\tgit repack -ad &&\n'> <'\ttest_must_fail git cat-file -p $sha1\n'>
        )
      }
    )
    (C {<test_expect_success>} {(SQ <'repack -k packs unreachable loose objects'>)} 
      {
        (SQ <'\n'> <'\t# create loose unreachable object\n'> 
          <'\tsha1=$(echo would-be-deleted-loose | git hash-object -w --stdin) &&\n'> <'\tobjpath=.git/objects/$(echo $sha1 | sed "s,..,&/,") &&\n'> <'\ttest_path_is_file $objpath &&\n'> 
          <'\n'> <'\t# and confirm that the loose object goes away, but we can\n'> 
          <'\t# still access it (ergo, it is packed)\n'> <'\tgit repack -adk &&\n'> <'\ttest_path_is_missing $objpath &&\n'> <'\tgit cat-file -p $sha1\n'>
        )
      }
    )
    (C {<test_done>})
  ]
)