This was fixed at revision 473, but the fix is incomplete because it doesn't account for when the user tells r-r to skip package ordering. If the package list is ordered by portage the atoms will have versions, so the '=' is appropriate. If ordering is skipped the list of packages will be unversioned slotted atoms, and the '=' should not be prepended. Patch forthcoming.
Created attachment 146071 [details, diff] revdep-rebuild_r479if-ordered-use-equals.patch If the .5_order tempfile is found we can assume packages are versioned, not slotted, and prepend '='. If .5_order is not found, we use .4_ebuilds, which will either have the '=' in itself, or will have slotted atoms that don't require the '='.
Created attachment 146073 [details, diff] revdep-rebuild_r479if-ordered-use-equals.patch blah, cruft, sorry
$ svn commit -m "Fix prepending '=' to slotted atoms (Bug #213328)" Sending revdep-rebuild/revdep-rebuild Transmitting file data . Committed revision 481.
Released in gentoolkit-0.2.4_rc4