[jeruku]

Here is a sample of how it might be done, I threw it together real quick so it is without guarantee.

It will wait 1.5 seconds, global cooldown, after a spell cast waiting to see if you had entered combat.

local SkillFlow = CreateFrame("Frame");
SkillFlow:RegisterEvent("PLAYER_REGEN_ENABLED");
SkillFlow:RegisterEvent("PLAYER_REGEN_DISABLED");
SkillFlow:RegisterEvent("COMBAT_LOG_EVENT_UNFILTERED");
 
SkillFlow.regenEnabled = true;
SkillFlow.queue = {};
SkillFlow.queueSize = 10;
 
local placeholderfunc
local placeholdername
 
local function DoThis(self, spellName)
    if #self.queue < self.queueSize then
        table.insert(self.queue, spellName);
    else
        for i = 1, #self.queue - 1 do
            self.queue[i] = self.queue[i + 1];
        end
 
        self.queue[self.queueSize] = spellName;
    end
 
    -- DUBUGGING ----------------------------------------
    print("\n======== Skill Flow ========");
    for i = 1, #self.queue do
        print(string.format("%d: %s", i, self.queue[i]));
    end
    print("============================");
    -----------------------------------------------------
end
 
local function StopThis()
    placeholderfunc = nil
    placeholdername = nil
end
 
function SkillFlow:PLAYER_REGEN_ENABLED()
    self.regenEnabled = true;
    -- safety measure
    StopThis()
end
 
function SkillFlow:PLAYER_REGEN_DISABLED()
    self.regenEnabled = false;
    if placeholderfunc then
        placeholderfunc(self, placeholdername)
    end
    StopThis()
end
 
function SkillFlow:OnEvent(event, ...)
    self[event](self, event, ...);
end
 
function SkillFlow:COMBAT_LOG_EVENT_UNFILTERED(event, _, subEvent, _, sourceGUID, _, _, _, _, _, _, _, _, spellName, ...)
    if sourceGUID == UnitGUID("player") then
        if subEvent == "SPELL_CAST_SUCCESS" and not self.regenEnabled then
            DoThis(self, spellName)
        elseif self.regenEnabled and not placeholderfunc then
            placeholderfunc = DoThis
            placeholdername = SpellName
            C_Timer.After(1.5, StopThis) -- wait until after global cooldown I suppose.
        end
    end
end
 
SkillFlow:SetScript("OnEvent", SkillFlow.OnEvent);