(command.CommandList
  children: [
    (command.ShAssignment
      pairs: [
        (assign_pair
          lhs: (sh_lhs_expr.Name name:test_description)
          op: assign_op.Equal
          rhs: {(SQ (Token id:Id.Lit_Chars val:'diff hunk fusing' span_id:6))}
          spids: [4]
        )
      ]
    )
    (C {(.)} {(./test-lib.sh)})
    (command.ShFunction
      name: f
      body: 
        (command.BraceGroup
          children: [
            (C {(echo)} {($ Id.VSub_Number '$1')})
            (command.ShAssignment
              pairs: [
                (assign_pair
                  lhs: (sh_lhs_expr.Name name:i)
                  op: assign_op.Equal
                  rhs: {(1)}
                  spids: [27]
                )
              ]
            )
            (command.WhileUntil
              keyword: (Token id:Id.KW_While val:while span_id:31)
              cond: [(C {(test)} {($ Id.VSub_DollarName '$i')} {(-le)} {($ Id.VSub_Number '$2')})]
              body: 
                (command.DoGroup
                  children: [
                    (C {(echo)} {($ Id.VSub_DollarName '$i')})
                    (command.ShAssignment
                      pairs: [
                        (assign_pair
                          lhs: (sh_lhs_expr.Name name:i)
                          op: assign_op.Equal
                          rhs: 
                            {
                              (command_sub
                                left_token: (Token id:Id.Left_DollarParen val:'$(' span_id:51)
                                command_list: 
                                  (command.CommandList
                                    children: [
                                      (C {(expr)} {($ Id.VSub_DollarName '$i')} {(Id.Lit_Other '+')} 
                                        {(1)}
                                      )
                                    ]
                                  )
                              )
                            }
                          spids: [50]
                        )
                      ]
                    )
                  ]
                )
            )
            (C {(echo)} {($ Id.VSub_Number '$3')})
          ]
        )
    )
    (command.ShFunction
      name: t
      body: 
        (command.BraceGroup
          children: [
            (command.Case
              to_match: {($ Id.VSub_Pound '$#')}
              arms: [
                (case_arm
                  pat_list: [{(4)}]
                  action: [
                    (command.Sentence
                      child: 
                        (command.ShAssignment
                          pairs: [
                            (assign_pair
                              lhs: (sh_lhs_expr.Name name:hunks)
                              op: assign_op.Equal
                              rhs: {($ Id.VSub_Number '$4')}
                              spids: [89]
                            )
                          ]
                        )
                      terminator: (Token id:Id.Op_Semi val:';' span_id:91)
                    )
                    (command.ShAssignment
                      pairs: [
                        (assign_pair
                          lhs: (sh_lhs_expr.Name name:cmd)
                          op: assign_op.Equal
                          rhs: {(DQ ('diff -U') ($ Id.VSub_Number '$3'))}
                          spids: [93]
                        )
                      ]
                    )
                  ]
                  spids: [86 87 98 -1]
                )
                (case_arm
                  pat_list: [{(5)}]
                  action: [
                    (command.Sentence
                      child: 
                        (command.ShAssignment
                          pairs: [
                            (assign_pair
                              lhs: (sh_lhs_expr.Name name:hunks)
                              op: assign_op.Equal
                              rhs: {($ Id.VSub_Number '$5')}
                              spids: [104]
                            )
                          ]
                        )
                      terminator: (Token id:Id.Op_Semi val:';' span_id:106)
                    )
                    (command.ShAssignment
                      pairs: [
                        (assign_pair
                          lhs: (sh_lhs_expr.Name name:cmd)
                          op: assign_op.Equal
                          rhs: 
                            {
                              (DQ ('diff -U') ($ Id.VSub_Number '$3') (' --inter-hunk-context=') 
                                ($ Id.VSub_Number '$4')
                              )
                            }
                          spids: [108]
                        )
                      ]
                    )
                  ]
                  spids: [101 102 115 -1]
                )
              ]
            )
            (command.ShAssignment
              pairs: [
                (assign_pair
                  lhs: (sh_lhs_expr.Name name:label)
                  op: assign_op.Equal
                  rhs: 
                    {
                      (DQ ($ Id.VSub_DollarName '$cmd') (', ') ($ Id.VSub_Number '$1') (' common ') 
                        ($ Id.VSub_Number '$2')
                      )
                    }
                  spids: [121]
                )
              ]
            )
            (command.ShAssignment
              pairs: [
                (assign_pair
                  lhs: (sh_lhs_expr.Name name:file)
                  op: assign_op.Equal
                  rhs: {(f) ($ Id.VSub_Number '$1')}
                  spids: [131]
                )
              ]
            )
            (command.ShAssignment
              pairs: [
                (assign_pair
                  lhs: (sh_lhs_expr.Name name:expected)
                  op: assign_op.Equal
                  rhs: 
                    {(expected.) ($ Id.VSub_DollarName '$file') (.) ($ Id.VSub_Number '$3') (.) 
                      ($ Id.VSub_DollarName '$hunks')
                    }
                  spids: [136]
                )
              ]
            )
            (command.If
              arms: [
                (if_arm
                  cond: [
                    (command.Pipeline
                      children: [(C {(test)} {(-f)} {($ Id.VSub_DollarName '$file')})]
                      negated: T
                    )
                  ]
                  action: [
                    (command.Simple
                      words: [{(f)} {(A)} {($ Id.VSub_Number '$1')} {(B)}]
                      redirects: [
                        (redir.Redir
                          op: (Token id:Id.Redir_Great val:'>' span_id:168)
                          fd: -1
                          arg_word: {($ Id.VSub_DollarName '$file')}
                        )
                      ]
                    )
                    (C {(git)} {(add)} {($ Id.VSub_DollarName '$file')})
                    (C {(git)} {(commit)} {(-q)} {(-m.)} {($ Id.VSub_DollarName '$file')})
                    (command.Simple
                      words: [{(f)} {(X)} {($ Id.VSub_Number '$1')} {(Y)}]
                      redirects: [
                        (redir.Redir
                          op: (Token id:Id.Redir_Great val:'>' span_id:198)
                          fd: -1
                          arg_word: {($ Id.VSub_DollarName '$file')}
                        )
                      ]
                    )
                  ]
                  spids: [146 157]
                )
              ]
            )
            (C {(test_expect_success)} 
              {
                (DQ ($ Id.VSub_DollarName '$label') (': count hunks (') ($ Id.VSub_DollarName '$hunks') 
                  (')')
                )
              } 
              {
                (DQ ('\n') ('\t\ttest ') 
                  (command_sub
                    left_token: (Token id:Id.Left_DollarParen val:'$(' span_id:218)
                    command_list: 
                      (command.CommandList
                        children: [
                          (command.Pipeline
                            children: [
                              (C {(git)} {($ Id.VSub_DollarName '$cmd')} 
                                {($ Id.VSub_DollarName '$file')}
                              )
                              (C {(grep)} {(SQ (Token id:Id.Lit_Chars val:'^@@ ' span_id:230))})
                              (C {(wc)} {(-l)})
                            ]
                            negated: F
                          )
                        ]
                      )
                  ) (' = ') ($ Id.VSub_DollarName '$hunks') ('\n') ('\t')
                )
              }
            )
            (command.AndOr
              ops: [Id.Op_DAmp]
              children: [
                (C {(test)} {(-f)} {($ Id.VSub_DollarName '$expected')})
                (C {(test_expect_success)} {(DQ ($ Id.VSub_DollarName '$label') (': check output'))} 
                  {
                    (DQ ('\n') ('\t\tgit ') ($ Id.VSub_DollarName '$cmd') (' ') 
                      ($ Id.VSub_DollarName '$file') (" | grep -v '^index ' >actual &&\n") ('\t\ttest_cmp ') ($ Id.VSub_DollarName '$expected') (' actual\n') 
                      ('\t')
                    )
                  }
                )
              ]
            )
          ]
        )
    )
    (command.AndOr
      ops: [Id.Op_DPipe]
      children: [
        (command.Simple
          words: [{(cat)}]
          redirects: [
            (redir.HereDoc
              op: (Token id:Id.Redir_DLess val:'<<' span_id:281)
              fd: -1
              here_begin: {(EOF)}
              here_end_span_id: 303
              stdin_parts: [
                ('diff --git a/f1 b/f1\n')
                ('--- a/f1\n')
                ('+++ b/f1\n')
                ('@@ -1,3 +1,3 @@\n')
                ('-A\n')
                ('+X\n')
                (' 1\n')
                ('-B\n')
                ('+Y\n')
              ]
            )
            (redir.Redir
              op: (Token id:Id.Redir_Great val:'>' span_id:284)
              fd: -1
              arg_word: {(expected.f1.0.1)}
            )
          ]
        )
        (command.ControlFlow
          token: (Token id:Id.ControlFlow_Exit val:exit span_id:289)
          arg_word: {(1)}
        )
      ]
    )
    (command.AndOr
      ops: [Id.Op_DPipe]
      children: [
        (command.Simple
          words: [{(cat)}]
          redirects: [
            (redir.HereDoc
              op: (Token id:Id.Redir_DLess val:'<<' span_id:307)
              fd: -1
              here_begin: {(EOF)}
              here_end_span_id: 329
              stdin_parts: [
                ('diff --git a/f1 b/f1\n')
                ('--- a/f1\n')
                ('+++ b/f1\n')
                ('@@ -1 +1 @@\n')
                ('-A\n')
                ('+X\n')
                ('@@ -3 +3 @@ A\n')
                ('-B\n')
                ('+Y\n')
              ]
            )
            (redir.Redir
              op: (Token id:Id.Redir_Great val:'>' span_id:310)
              fd: -1
              arg_word: {(expected.f1.0.2)}
            )
          ]
        )
        (command.ControlFlow
          token: (Token id:Id.ControlFlow_Exit val:exit span_id:315)
          arg_word: {(1)}
        )
      ]
    )
    (C {(t)} {(1)} {(line)} {(0)} {(2)})
    (C {(t)} {(1)} {(line)} {(0)} {(0)} {(2)})
    (C {(t)} {(1)} {(line)} {(0)} {(1)} {(1)})
    (C {(t)} {(1)} {(line)} {(0)} {(2)} {(1)})
    (C {(t)} {(1)} {(line)} {(1)} {(1)})
    (C {(t)} {(2)} {(lines)} {(0)} {(2)})
    (C {(t)} {(2)} {(lines)} {(0)} {(0)} {(2)})
    (C {(t)} {(2)} {(lines)} {(0)} {(1)} {(2)})
    (C {(t)} {(2)} {(lines)} {(0)} {(2)} {(1)})
    (C {(t)} {(2)} {(lines)} {(1)} {(1)})
    (C {(t)} {(3)} {(lines)} {(1)} {(2)})
    (C {(t)} {(3)} {(lines)} {(1)} {(0)} {(2)})
    (C {(t)} {(3)} {(lines)} {(1)} {(1)} {(1)})
    (C {(t)} {(3)} {(lines)} {(1)} {(2)} {(1)})
    (C {(t)} {(9)} {(lines)} {(3)} {(2)})
    (C {(t)} {(9)} {(lines)} {(3)} {(2)} {(2)})
    (C {(t)} {(9)} {(lines)} {(3)} {(3)} {(1)})
    (C {(test_done)})
  ]
)