Rift: LibUnitChange example

-- from Kreiri's Buff Bars

local function OnUnitChange(unit, value)
    for _, g in pairs(KBB.groups) do
        if g.settings.unit == unit then
            if (value) then
                KBB.RescanBuffs(g)
                if(g.settings.sorts) then g:sortBars() end
                g:alignBars()
            else
                g:removeAllBars()
            end
        end
    end
end

for k, v in pairs(KBB.units) do
    table.insert(Library.LibUnitChange.Register(k), {function(value) OnUnitChange(k, value) end, addonInfo.toc.Identifier, "OnUnitChange"})
end