Given e.g. a gzipped textfile
file.txt.gz, how to create a special file
file.txt that on reading yields the (interactively) decompressed contents of the
.gz file, and on writing a) re-
gzips the new content or b) denies write-access?
If the FUSE-mounted virtual file system just passes through non-archive-files, this could be what you want.