(CommandList
  children: [
    (Assignment
      keyword: Assign_None
      pairs: [
        (assign_pair
          lhs: (LhsName name:test_description)
          op: Equal
          rhs: {(SQ <'apply same filename'>)}
          spids: [4]
        )
      ]
      spids: [4]
    )
    (C {(.)} {(./test-lib.sh)})
    (FuncDef
      name: modify
      body: 
        (BraceGroup
          children: [
            (AndOr
              children: [
                (SimpleCommand
                  words: [{(sed)} {(-e)} {(DQ ($ VSub_Number '$1'))}]
                  redirects: [
                    (Redir
                      op_id: Redir_Less
                      fd: -1
                      arg_word: {(DQ ($ VSub_Number '$2'))}
                      spids: [31]
                    )
                    (Redir
                      op_id: Redir_Great
                      fd: -1
                      arg_word: {(DQ ($ VSub_Number '$2')) (.x)}
                      spids: [37]
                    )
                  ]
                )
                (C {(mv)} {(DQ ($ VSub_Number '$2')) (.x)} {(DQ ($ VSub_Number '$2'))})
              ]
              op_id: Op_DAmp
            )
          ]
          spids: [20]
        )
      spids: [15 19]
    )
    (C {(test_expect_success)} {(setup)} 
      {
        (SQ <'\n'> <'\tfor i in a b c d e f g h i j k l m\n'> <'\tdo\n'> <'\t\techo $i\n'> 
          <'\tdone >same_fn &&\n'> <'\tcp same_fn other_fn &&\n'> <'\tgit add same_fn other_fn &&\n'> <'\tgit commit -m initial\n'>
        )
      }
    )
    (C {(test_expect_success)} {(SQ <'apply same filename with independent changes'>)} 
      {
        (SQ <'\n'> <'\tmodify "s/^d/z/" same_fn &&\n'> <'\tgit diff > patch0 &&\n'> 
          <'\tgit add same_fn &&\n'> <'\tmodify "s/^i/y/" same_fn &&\n'> <'\tgit diff >> patch0 &&\n'> <'\tcp same_fn same_fn2 &&\n'> 
          <'\tgit reset --hard &&\n'> <'\tgit apply patch0 &&\n'> <'\ttest_cmp same_fn same_fn2\n'>
        )
      }
    )
    (C {(test_expect_success)} {(SQ <'apply same filename with overlapping changes'>)} 
      {
        (SQ <'\n'> <'\tgit reset --hard &&\n'> <'\tmodify "s/^d/z/" same_fn &&\n'> 
          <'\tgit diff > patch0 &&\n'> <'\tgit add same_fn &&\n'> <'\tmodify "s/^e/y/" same_fn &&\n'> <'\tgit diff >> patch0 &&\n'> 
          <'\tcp same_fn same_fn2 &&\n'> <'\tgit reset --hard &&\n'> <'\tgit apply patch0 &&\n'> <'\ttest_cmp same_fn same_fn2\n'>
        )
      }
    )
    (C {(test_expect_success)} {(SQ <'apply same new filename after rename'>)} 
      {
        (SQ <'\n'> <'\tgit reset --hard &&\n'> <'\tgit mv same_fn new_fn &&\n'> 
          <'\tmodify "s/^d/z/" new_fn &&\n'> <'\tgit add new_fn &&\n'> <'\tgit diff -M --cached > patch1 &&\n'> <'\tmodify "s/^e/y/" new_fn &&\n'> 
          <'\tgit diff >> patch1 &&\n'> <'\tcp new_fn new_fn2 &&\n'> <'\tgit reset --hard &&\n'> <'\tgit apply --index patch1 &&\n'> 
          <'\ttest_cmp new_fn new_fn2\n'>
        )
      }
    )
    (C {(test_expect_success)} {(SQ <'apply same old filename after rename -- should fail.'>)} 
      {
        (SQ <'\n'> <'\tgit reset --hard &&\n'> <'\tgit mv same_fn new_fn &&\n'> 
          <'\tmodify "s/^d/z/" new_fn &&\n'> <'\tgit add new_fn &&\n'> <'\tgit diff -M --cached > patch1 &&\n'> <'\tgit mv new_fn same_fn &&\n'> 
          <'\tmodify "s/^e/y/" same_fn &&\n'> <'\tgit diff >> patch1 &&\n'> <'\tgit reset --hard &&\n'> <'\ttest_must_fail git apply patch1\n'>
        )
      }
    )
    (C {(test_expect_success)} {(SQ <'apply A->B (rename), C->A (rename), A->A -- should pass.'>)} 
      {
        (SQ <'\n'> <'\tgit reset --hard &&\n'> <'\tgit mv same_fn new_fn &&\n'> 
          <'\tmodify "s/^d/z/" new_fn &&\n'> <'\tgit add new_fn &&\n'> <'\tgit diff -M --cached > patch1 &&\n'> <'\tgit commit -m "a rename" &&\n'> 
          <'\tgit mv other_fn same_fn &&\n'> <'\tmodify "s/^e/y/" same_fn &&\n'> <'\tgit add same_fn &&\n'> 
          <'\tgit diff -M --cached >> patch1 &&\n'> <'\tmodify "s/^g/x/" same_fn &&\n'> <'\tgit diff >> patch1 &&\n'> <'\tgit reset --hard HEAD^ &&\n'> 
          <'\tgit apply patch1\n'>
        )
      }
    )
    (C {(test_done)})
  ]
)