using bash-completion (app-shells/bash-completion Latest version installed:
20040331-r1) on the command rc-status gives:
<snip>
rockoo@porkoo# rc-status
--list -a -l boot nonetwork
--unused -all -u default
</snap>
but the -all option is wrong - it have to be --all
<snip>
rockoo@porkoo# rc-status -all
USAGE: /bin/rc-status [--all | --list | --unused | <runlevel>]
--all -a Show services at all run levels
--list -l Show list of run levels
--unused -u Show services not assigned to any run level
<runlevel> Show services assigned to <runlevel>
If no arguments are supplied, shows services for current run level.
</snap>