argv[1] = <xxxyyy> argv[1] = <xxx^?yyy> argv[1] = <xy> argv[1] = <x^?y> argv[1] = <--> argv[1] = <-^?-> argv[1] = <> argv[1] = <> argv[1] = <^?> argv[1] = <^?yy> 0x7f 0x7f 0x7f argv[1] = <^?> argv[1] = <^?@> argv[1] = <@^?@> argv[1] = <@^?> argv[1] = <^?> argv[1] = <^?@> argv[1] = <@^?@> argv[1] = <@^?> argv[1] = <1> argv[2] = <^?> argv[3] = <^?> argv[1] = <2> argv[2] = <^?a> argv[3] = <^?a> argv[1] = <2> argv[2] = <^?a> argv[3] = <^?a> argv[1] = <3> argv[2] = <^?aa> argv[3] = <^?aa> argv[1] = <> argv[1] = <--> argv[1] = <--> argv[1] = <^?> argv[1] = <-^?-> argv[1] = <^?> argv[1] = <-^?-> ok argv[1] = <aaa^?bbb> argv[1] = <ccc^?ddd> argv[1] = <eee^?fff> argv[1] = <ggg^?hhh> argv[1] = <aaabbb> argv[1] = <cccddd> argv[1] = <eeefff> argv[1] = <ggghhh> argv[1] = <aaa^?bbb> argv[1] = <ccc^?ddd> argv[1] = <eee^?fff> argv[1] = <ggg^?hhh> argv[1] = <aaabbb> argv[1] = <cccddd> argv[1] = <eeefff> argv[1] = <ggghhh> argv[1] = <aaa^?bbb> argv[1] = <ccc^?ddd> argv[1] = <eee^?fff> argv[1] = <ggg^?hhh>