(CommandList
  children: [
    (Assignment
      keyword: Assign_None
      pairs: [
        (assign_pair
          lhs: (LhsName name:test_description)
          op: Equal
          rhs: {(SQ <'diff honors config option, diff.suppressBlankEmpty'>)}
          spids: [12]
        )
      ]
      spids: [12]
    )
    (C {(.)} {(./test-lib.sh)})
    (AndOr
      children: [
        (SimpleCommand
          words: [{(cat)}]
          redirects: [
            (HereDoc
              op_id: Redir_DLess
              fd: 16777215
              body: 
                {('diff --git a/f b/f\n') ('index 5f6a263..8cb8bae 100644\n') ('--- a/f\n') 
                  ('+++ b/f\n') ('@@ -1,2 +1,2 @@\n') ('\n') ('-x\n') ('+y\n')
                }
              do_expansion: False
              here_end: EOF
              was_filled: True
              spids: [25]
            )
            (Redir op_id:Redir_Great fd:16777215 arg_word:{(exp)} spids:[29])
          ]
        )
        (C {(exit)} {(1)})
      ]
      op_id: Op_DPipe
    )
    (C {(test_expect_success)} {(DQ ($ VSub_Name '$test_description'))} 
      {
        (SQ <'printf "\\nx\\n" > f &&\n'> <'     git add f &&\n'> <'     git commit -q -m. f &&\n'> 
          <'     printf "\\ny\\n" > f &&\n'> <'     git config --bool diff.suppressBlankEmpty true &&\n'> <'     git diff f > actual &&\n'> 
          <'     test_cmp exp actual &&\n'> <'     perl -i.bak -p -e "s/^\\$/ /" exp &&\n'> 
          <'     git config --bool diff.suppressBlankEmpty false &&\n'> <'     git diff f > actual &&\n'> <'     test_cmp exp actual &&\n'> 
          <'     git config --bool --unset diff.suppressBlankEmpty &&\n'> <'     git diff f > actual &&\n'> <'     test_cmp exp actual\n'> <'     '>
        )
      }
    )
    (C {(test_done)})
  ]
)