--TEST-- invalid arguments and error messages --SKIPIF-- --FILE-- --EXPECT-- string(32) "You can use -R or -F only once. " string(32) "You can use -R or -F only once. " string(32) "You can use -R or -F only once. " string(32) "You can use -R or -F only once. " string(26) "You can use -f only once. " string(26) "You can use -B only once. " string(26) "You can use -E only once. " string(26) "You can use -r only once. " Done