#!/bin/bash
# Compatibility script for OS X which lacks realpath
if test ! -z $[which realpath] {
  realpath -s $1
} else {
  [[ $1 = /* ]] && echo $1 || echo "$PWD/$(1#./)"
}
(CommandList
  children: [
    (If
      arms: [
        (if_arm
          cond: [
            (Sentence
              child: 
                (C {(Lit_Other "[")} {(KW_Bang "!")} {(-z)} 
                  {
                    (DQ 
                      (CommandSubPart
                        command_list: (CommandList children:[(C {(which)} {(realpath)})])
                        left_token: <Left_CommandSub "$(">
                        spids: [15 19]
                      )
                    )
                  } {(Lit_Other "]")}
                )
              terminator: <Op_Semi ";">
            )
          ]
          action: [(C {(realpath)} {(-s)} {(DQ ($ VSub_Number "$1"))})]
          spids: [-1 25]
        )
      ]
      else_action: [
        (AndOr
          children: [
            (DBracket
              expr: 
                (BoolBinary
                  op_id: BoolBinary_GlobEqual
                  left: {($ VSub_Number "$1")}
                  right: {(/) (Lit_Other "*")}
                )
            )
            (AndOr
              children: [
                (C {(echo)} {(DQ ($ VSub_Number "$1"))})
                (C {(echo)} 
                  {
                    (DQ ($ VSub_Name "$PWD") (/) 
                      (BracedVarSub
                        token: <VSub_Number 1>
                        suffix_op: (StringUnary op_id:VOp1_Pound arg_word:{(.) (Lit_Slash /)})
                        spids: [65 70]
                      )
                    )
                  }
                )
              ]
              op_id: Op_DPipe
            )
          ]
          op_id: Op_DAmp
        )
      ]
      spids: [36 73]
    )
  ]
)