# File lib/ruote/exp/ro_variables.rb, line 200
    def locate_set_var(var, override)

      hk = h.variables && h.variables.has_key?(var)

      if ( ! override) || var.match(/^\//)
        false
      elsif override == 'sub' && DefineExpression.is_definition?(tree) && ! hk
        false
      elsif hk
        [ self, var ]
      elsif par = parent
        par.locate_set_var(var, override)
      else
        false
      end
    end