Small error in ls --help output?

[Bob Proulx]

Christian Hudon reported to the Debian BTS that while the ls --help
output for the -f option documented that it turned off the -lst
options that it did not document that it also disabled the -S option.

  http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=303633

Should it list -S too?  Should it also document other effects such as
that it turns off --color and -1?

Thanks
Bob