First char: A Read: 257 undef Initializing current string for 257 ("A") from "A" and "" E<< Created: 257 : "AA" Read: 66 "B" E<< Created: 258 : "AAB" Read: 259 undef Initializing current string for 259 ("BB") from "B" and "B" E<< Created: 259 : "BB" Read: 13 "\r" E<< Created: 260 : "BB\r" Read: 10 "\n" E<< Created: 261 : "\r\n"