(List
  (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('test_description', {[SQ <LIT_CHARS "performance with large numbers of packs">]})])
  (Com {[LIT_CHARS .]} {[LIT_CHARS ./perf-lib.sh]})
  (Com {[LIT_CHARS test_perf_large_repo]})
  (FunctionDef repack_into_n []
    (List
      (AndOr OP_AND_IF
        (Com {[LIT_CHARS rm]} {[LIT_CHARS -rf]} {[LIT_CHARS staging]})
        (AndOr OP_AND_IF
          (Com {[LIT_CHARS mkdir]} {[LIT_CHARS staging]})
          (Pipeline
            (Com {[LIT_CHARS git]} {[LIT_CHARS rev-list]} {[LIT_CHARS --first-parent]} {[LIT_CHARS HEAD]})
            (Com {[LIT_CHARS sed]} {[LIT_CHARS -n]} {[SQ <LIT_CHARS "1~5p">]})
            (Com {[LIT_CHARS head]} {[LIT_CHARS -n]} {[DQ [VarSub 1]]})
            (Com {[LIT_CHARS perl]} {[LIT_CHARS -e]} {[SQ <LIT_CHARS "print reverse <>">]}
              <
              (FilenameRedirectNode filename={[LIT_CHARS pushes]} <REDIR_GREAT ">"> 1),
              >
            )
          )
        )
      )
      (Pipeline
        (Com {[LIT_CHARS head]} {[LIT_CHARS -n]} {[LIT_CHARS 1]} {[LIT_CHARS pushes]})
        (Com {[LIT_CHARS git]} {[LIT_CHARS pack-objects]} {[LIT_CHARS --delta-base-offset]} {[LIT_CHARS --revs]} {[LIT_CHARS staging/pack]})
      )
      (AndOr OP_AND_IF
        (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('last', {[SQ ]})])
        (AndOr OP_AND_IF
          (While
            (Com {[LIT_CHARS read]} {[LIT_CHARS rev]})
            (List
              (If
                (Com {[LIT_CHARS test]} {[LIT_CHARS -n]} {[DQ [VarSub last]]})
                (AndOr OP_OR_IF
                  (Pipeline
                    (AndOr OP_AND_IF
                      (Com {[LIT_CHARS echo]} {[DQ [VarSub rev]]})
                      (Com {[LIT_CHARS echo]} {[DQ [LIT_CHARS "^"][VarSub last]]})
                    )
                    (Com {[LIT_CHARS git]} {[LIT_CHARS pack-objects]} {[LIT_CHARS --delta-base-offset]} {[LIT_CHARS --revs]} {[LIT_CHARS staging/pack]})
                  )
                  (Com {[LIT_CHARS return]} {[LIT_CHARS 1]})
                )
              )
              (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('last', {[VarSub rev]})])
            )
          )
          (AndOr OP_AND_IF
            (Com {[LIT_CHARS rm]} {[LIT_CHARS -f]} {[LIT_CHARS .git/objects/pack/] [LIT_OTHER "*"]})
            (Com {[LIT_CHARS mv]} {[LIT_CHARS staging/] [LIT_OTHER "*"]} {[LIT_CHARS .git/objects/pack/]})
          )
        )
      )
    )
  )
  (Com {[LIT_CHARS test_expect_success]} {[SQ <LIT_CHARS "simplify reachability">]} {[SQ <LIT_CHARS "\n"> <LIT_CHARS "\ttip=$(git rev-parse --verify HEAD) &&\n"> <LIT_CHARS "\tgit for-each-ref --format=\"option no-deref%0adelete %(refname)\" |\n"> <LIT_CHARS "\tgit update-ref --stdin &&\n"> <LIT_CHARS "\trm -rf .git/logs &&\n"> <LIT_CHARS "\tgit update-ref refs/heads/master $tip &&\n"> <LIT_CHARS "\tgit symbolic-ref HEAD refs/heads/master &&\n"> <LIT_CHARS "\tgit repack -ad\n">]})
  (For nr_packs [{[LIT_CHARS 1]}, {[LIT_CHARS 50]}, {[LIT_CHARS 1000]}])
    (List
      (Com {[LIT_CHARS test_expect_success]} {[DQ [LIT_CHARS "create "][VarSub nr_packs][LIT_CHARS "-pack scenario"]]} {[SQ <LIT_CHARS "\n"> <LIT_CHARS "\t\trepack_into_n $nr_packs\n"> <LIT_CHARS "\t">]})
      (Com {[LIT_CHARS test_perf]} {[DQ [LIT_CHARS "rev-list ("][VarSub nr_packs][LIT_CHARS ")"]]} {[SQ <LIT_CHARS "\n"> <LIT_CHARS "\t\tgit rev-list --objects --all >/dev/null\n"> <LIT_CHARS "\t">]})
      (Com {[LIT_CHARS test_perf]} {[DQ [LIT_CHARS "repack ("][VarSub nr_packs][LIT_CHARS ")"]]} {[SQ <LIT_CHARS "\n"> <LIT_CHARS "\t\tgit pack-objects --keep-true-parents \\\n"> <LIT_CHARS "\t\t  --honor-pack-keep --non-empty --all \\\n"> <LIT_CHARS "\t\t  --reflog --indexed-objects --delta-base-offset \\\n"> <LIT_CHARS "\t\t  --stdout </dev/null >/dev/null\n"> <LIT_CHARS "\t">]})
    )
  )
  (Com {[LIT_CHARS test_done]})
)