Replace OLDIFS/IFS joins with join_array_by_char(), avoiding $(...) subshell slowdown.
Replace OLDIFS/IFS joins with join_array_by_char(), avoiding $(...) subshell slowdown.

jvehent/cipherscan,jvehent/cipherscan,PeterMosmans/cipherscan,PeterMosmans/cipherscan,MikeDawg/cipherscan,PeterMosmans/cipherscan,jvehent/cipherscan,MikeDawg/cipherscan,MikeDawg/cipherscan