(List
  (= scope=<EAssignScope.GLOBAL 1> flags=1 words=[] bindings=[('FIREFOX', {[VarSub FIREFOX test_op=VS_TEST_COLON_HYPHEN {[LIT_CHARS firefox]}]})])
  (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('PORT', {[LIT_CHARS 8888]})])
  (Fork
    (Com {[LIT_CHARS python]} {[LIT_CHARS -m]} {[LIT_CHARS SimpleHTTPServer]} {[DQ [VarSub PORT]]}
      <
      (FilenameRedirectNode filename={[LIT_CHARS /dev/null]} <REDIR_GREAT ">"> 1),
      (DescriptorRedirectNode target={[LIT_CHARS 1]} <REDIR_GREATAND "2>&"> 2),
      >
    )
  )
  (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('PID', {[VarSub !]})])
  (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('URL', {[ComSub (Pipeline (Com {[LIT_CHARS echo]} {[DQ [VarSub *]]}) (Com {[LIT_CHARS sed]} {[LIT_CHARS -e]} {[SQ <LIT_CHARS "s/ /?/">]} {[LIT_CHARS -e]} {[SQ <LIT_CHARS "s/ /\\&/g">]} {[LIT_CHARS -e]} {[DQ [LIT_CHARS "s?^?http://localhost:"][VarSub PORT][LIT_CHARS "/?"]]}) )]})])
  (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('REFTRAIN', {[ComSub (Pipeline (Com {[LIT_CHARS echo]} {[VarSub SCRIPTNAME]}) (Com {[LIT_CHARS sed]} {[LIT_CHARS -e]} {[SQ <LIT_CHARS "s/.*run\\.//">]} {[LIT_CHARS -e]} {[SQ <LIT_CHARS "s/\\.sh$//">]}) )]})])
  (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('URL', {[ComSub (Pipeline (Com {[LIT_CHARS echo]} {[VarSub URL]}) (Com {[LIT_CHARS sed]} {[DQ [LIT_CHARS s/.emcc.html/.emcc.html.][VarSub REFTRAIN][LIT_CHARS .html/]]}) )]})])
  (Com {[VarSub FIREFOX]} {[DQ [VarSub URL]]})
  (Com {[LIT_CHARS kill]} {[VarSub PID]})
)