allow output file to be overwritten if --repeat
allow output file to be overwritten if --repeat

google/brotli,anthrotype/brotli,nicksay/brotli,nicksay/brotli,google/brotli,google/brotli,szabadka/brotli,google/brotli,szabadka/brotli,szabadka/brotli,nicksay/brotli,anthrotype/brotli,google/brotli,anthrotype/brotli,anthrotype/brotli,google/brotli,nicksay/brotli,google/brotli,nicksay/brotli,szabadka/brotli,google/brotli,anthrotype/brotli,nicksay/brotli,nicksay/brotli