# File lib/rake.rb, line 391 391: def lookup(name) 392: if @hash.has_key?(name) 393: @hash[name] 394: elsif ENV.has_key?(name.to_s) 395: ENV[name.to_s] 396: elsif ENV.has_key?(name.to_s.upcase) 397: ENV[name.to_s.upcase] 398: elsif @parent 399: @parent.lookup(name) 400: end 401: end