curprev06:3606:36, 9 April 2022 Guy Harristalkcontribs 47,985 bytes−215 →Rock Ridge: Rock Ridge doesn't change anything about character encoding, it just expands the set of characters in file names from "d-characters or d1-characters" (the former are digits, upper-case letters, and underscore; the latter are agreed on by the writer and reader of the CD-ROM) to the POSIX Portable Filename Character Set, which includes technological advances such as lower-case a-z, Anything *beyond* that character set involves the same ISO 2022 stuff that ISO 9660 already has.undo