(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: 
            (condition.Shell
              commands: [
                (command.Simple
                  words: [
                    {<expr>}
                    {(DQ ($ Id.VSub_DollarName '$less'))}
                    {<Id.Lit_Colon ':'>}
                    {(SQ <'[a-z][a-z]*$'>)}
                  ]
                  redirects: [
                    (redir
                      op: <Id.Redir_Great '>'>
                      loc: (redir_loc.Fd fd:1)
                      arg: {<'/dev/null'>}
                    )
                  ]
                  do_fork: T
                )
              ]
            )
          action: [(C {<test_set_prereq>} {<SIMPLEPAGER>})]
          spids: [21 38]
        )
      ]
    )
  ]
)