The man page for the version of revdep-rebuild included in portage-utils-0.3.1 has incorrect information At the end of the "Options" section is the text "All other options (including unrecognized ones) are passed to the emerge command. Single-letter options may not be combined, so for example, -pv is not valid. Please use -p -v." However, attempting to pass an option such as "--ask" to emerge gives the following error message: "Encountered unrecognized option --ask. revdep-rebuild no longer automatically passes unrecognized options to portage. Separate emerge-only options from revdep-rebuild options with the -- flag."
This has been fixed for awhile and is correct in the current stable version of gentoolkit.
