(command.CommandList
  children: [
    (C {(test_expect_success)} {(SQ <'determine default pager'>)} 
      {
        (SQ <'\n'> <'\ttest_might_fail git config --unset core.pager &&\n'> <'\tless=$(\n'> 
          <'\t\tunset PAGER GIT_PAGER;\n'> <'\t\tgit var GIT_PAGER\n'> <'\t) &&\n'> <'\ttest -n "$less"\n'>
        )
      }
    )
    (command.If
      arms: [
        (if_arm
          cond: [
            (command.SimpleCommand
              words: [
                {(expr)}
                {(DQ ($ VSub_DollarName '$less'))}
                {(Lit_Other ':')}
                {(SQ <'[a-z][a-z]*$'>)}
              ]
              redirects: [(redir.Redir op:<Redir_Great '>'> fd:16777215 arg_word:{(/dev/null)})]
            )
          ]
          action: [(C {(test_set_prereq)} {(SIMPLEPAGER)})]
        )
      ]
    )
  ]
)