[flac-dev] Why Rice order in "--best" switch is limited to 6?

[Барт Гопник]

The "--best" switch currently synonymous with "-8" that synonymous
with "--compression-level-8" that synonymous with "-l 12 -b 4096 -m -e
-r 6".

Why value of "-r" switch in "--best" is limited to 6?

The maximum Rice order is 8 (not 6) for the stream to be Subset compatible.

"-r 8" ("-l 12 -b 4096 -m -e -r 8") produces better results than "-r
6" ("-l 12 -b 4096 -m -e -r 6") and and also Subset compatible.