(List
  (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('dir', {[ComSub (Com {[LIT_CHARS dirname]} {[VarSub 0]})]})])
  (Com {[LIT_CHARS perl]} {[LIT_CHARS -I]} {[VarSub dir] [LIT_CHARS /bin/]} {[VarSub dir] [LIT_CHARS /bin/specdiff]} {[DQ [VarSub @]]})
)