rsync-filter

# Include HTML versions
include rfc[0-9].html
include rfc[0-9][0-9].html
include rfc[0-9][0-9][0-9].html
include rfc[0-9][0-9][0-9][0-9].html
include rfc[0-9][0-9][0-9][0-9][0-9].html

# Include JSON versions
include rfc[0-9].json
include rfc[0-9][0-9].json
include rfc[0-9][0-9][0-9].json
include rfc[0-9][0-9][0-9][0-9].json
include rfc[0-9][0-9][0-9][0-9][0-9].json

# Exclude everything else
exclude *