(CommandList
  children: [
    (Assignment
      keyword: Assign_None
      pairs: [
        (assign_pair
          lhs: (LhsName name:test_description)
          op: Equal
          rhs: {(SQ <"Pickaxe options">)}
          spids: [13]
        )
      ]
      spids: [13]
    )
    (C {(.)} {(./test-lib.sh)})
    (C {(test_expect_success)} {(setup)} 
      {
        (SQ <"\n"> <"\ttest_commit initial &&\n"> <"\tprintf \"%04096d\" 0 >4096-zeroes.txt &&\n"> 
          <"\tgit add 4096-zeroes.txt &&\n"> <"\ttest_tick &&\n"> <"\tgit commit -m \"A 4k file\"\n">
        )
      }
    )
    (C {(test_expect_success)} {(SQ <"-G matches">)} 
      {
        (SQ <"\n"> <"\tgit diff --name-only -G \"^0{4096}$\" HEAD^ >out &&\n"> 
          <"\ttest 4096-zeroes.txt = \"$(cat out)\"\n">
        )
      }
    )
    (C {(test_done)})
  ]
)