diff --git a/aux-addon.lua b/aux-addon.lua
index 78d914e..0c9386e 100644
--- a/aux-addon.lua
+++ b/aux-addon.lua
@@ -122,9 +122,9 @@ do
 	local index
 	function private.active_tab.get() return tab_info[index] end
 	function on_tab_click(i)
-		call(index and active_tab.CLOSE)
+		(index and active_tab.CLOSE or nop)()
 		index = i
-		call(index and active_tab.OPEN)
+		;(index and active_tab.OPEN or nop)()
 	end
 end
 
@@ -172,7 +172,7 @@ do
 			locked = true
 			event_listener('CHAT_MSG_SYSTEM', function(kill)
 				if arg1 == ERR_AUCTION_BID_PLACED then
-					call(on_success)
+					(on_success or nop)()
 					locked = false
 					kill()
 				end
@@ -190,7 +190,7 @@ do
 		CancelAuction(index)
 		event_listener('CHAT_MSG_SYSTEM', function(kill)
 			if arg1 == ERR_AUCTION_REMOVED then
-				call(on_success)
+				(on_success or nop)()
 				locked = false
 				kill()
 			end
diff --git a/core/scan.lua b/core/scan.lua
index ad2465d..dc488ed 100644
--- a/core/scan.lua
+++ b/core/scan.lua
@@ -27,14 +27,14 @@ do
 			end
 		end
 		for _, state in aborted do
-			call(state.params.on_abort)
+			(state.params.on_abort or nop)()
 		end
 	end
 
 	function complete()
 		local on_complete = state.params.on_complete
 		scan_states[state.params.type] = nil
-		call(on_complete)
+		(on_complete or nop)()
 	end
 
 	function private.state.get()
@@ -101,7 +101,7 @@ end
 
 function submit_query()
 	when(function() return state.params.type ~= 'list' or CanSendAuctionQuery() end, function()
-		call(state.params.on_submit_query)
+		(state.params.on_submit_query or nop)()
 		state.last_query_time = GetTime()
 		if state.params.type == 'bidder' then
 			GetBidderAuctionItems(state.page)
@@ -151,7 +151,7 @@ function scan_page(i)
 
 		history.process_auction(auction_info)
 
-		if call(state.params.auto_buy_validator, auction_info) then
+		if (state.params.auto_buy_validator or nop)(auction_info) then
 			local send_signal, signal_received = signal()
 			when(signal_received, recurse)
 			place_bid(auction_info.query_type, auction_info.index, auction_info.buyout_price, L(send_signal, true))
diff --git a/core/stack.lua b/core/stack.lua
index 6220ea1..ab50109 100644
--- a/core/stack.lua
+++ b/core/stack.lua
@@ -107,11 +107,9 @@ function public.stop()
 	if state then
 		kill_thread(state.thread_id)
 		local callback, slot = state.callback, state.target_slot
-		if slot and not matching_item(slot) then
-			slot = nil
-		end
+		slot = slot and matching_item(slot) and slot or nil
 		state = nil
-		call(callback, slot)
+		(callback or nop)(slot)
 	end
 end
 
diff --git a/gui/core.lua b/gui/core.lua
index af252f7..8a46e20 100644
--- a/gui/core.lua
+++ b/gui/core.lua
@@ -267,7 +267,7 @@ do
 	function mt.__index:select(id)
 		self._selected = id
 		self:update()
-		call(self._on_select, id)
+		;(self._on_select or nop)(id)
 	end
 	function mt.__index:update()
 		for _, tab in self._tabs do
@@ -304,13 +304,13 @@ function public.editbox(parent)
     editbox:SetHeight(24)
     editbox:SetTextColor(0, 0, 0, 0)
     set_content_style(editbox)
-    local function colorize() this.display:SetText(call(this.colorizer, this:GetText()) or this:GetText()) end
-    local function format() this.display:SetText(call(this.formatter or this.colorizer, this:GetText()) or this:GetText()) end
+    local function colorize() this.display:SetText((this.colorizer or nop)(this:GetText()) or this:GetText()) end
+    local function format() this.display:SetText((this.formatter or this.colorizer or nop)(this:GetText()) or this:GetText()) end
     editbox:SetScript('OnEscapePressed', function()
         this:ClearFocus()
-	    call(this.escape)
+	    ;(this.escape or nop)()
     end)
-    editbox:SetScript('OnEnterPressed', function() call(this.enter) end)
+    editbox:SetScript('OnEnterPressed', function() (this.enter or nop)() end)
     editbox:SetScript('OnEditFocusGained', function()
 	    colorize()
 	    this.focused = true
@@ -318,7 +318,7 @@ function public.editbox(parent)
 	    this:SetScript('OnUpdate', function()
 			this.cursor:SetAlpha(mod(floor((GetTime()-this.cursor.last_change) * 2 + 1), 2))
 	    end)
-	    call(this.focus_gain)
+	    ;(this.focus_gain or nop)()
     end)
     editbox:SetScript('OnEditFocusLost', function()
 	    format()
@@ -326,17 +326,17 @@ function public.editbox(parent)
 	    this.cursor:SetAlpha(0)
 	    this:HighlightText(0, 0)
 	    this:SetScript('OnUpdate', nil)
-	    call(this.focus_loss)
+	    ;(this.focus_loss or nop)()
     end)
     editbox:SetScript('OnTextChanged', function()
 	    if this.focused then colorize() else format() end
-	    call(this.change)
+	    (this.change or nop)()
     end)
     editbox:SetScript('OnCursorChanged', function()
 	    this.cursor.last_change = GetTime()
-	    this.cursor:SetPoint(this:GetJustifyH(), this, this:GetJustifyH(), call(arg1 > 0 and max or min, 0, arg1 - 1), 1.5)
+	    this.cursor:SetPoint(this:GetJustifyH(), this, this:GetJustifyH(), (arg1 > 0 and max or min)(0, arg1 - 1), 1.5)
     end)
-    editbox:SetScript('OnChar', function() call(this.char) end)
+    editbox:SetScript('OnChar', function() (this.char or nop)() end)
     do
         local last_click
         editbox:SetScript('OnMouseDown', function()
@@ -398,7 +398,7 @@ function public.status_bar(parent)
         status_bar:SetFrameLevel(level + 2)
         status_bar:SetScript('OnUpdate', function()
             if this:GetValue() < 100 then
-                this:SetAlpha(1 - ((math.sin(GetTime()*PI)+1)/2)/2)
+                this:SetAlpha(1 - (sin(GetTime() * 180) + 1) / 4)
             else
                 this:SetAlpha(1)
             end
@@ -416,7 +416,7 @@ function public.status_bar(parent)
         status_bar:SetFrameLevel(level + 3)
         status_bar:SetScript('OnUpdate', function()
             if this:GetValue() < 100 then
-                this:SetAlpha(1 - ((math.sin(GetTime()*PI)+1)/2)/2)
+	            this:SetAlpha(1 - (sin(GetTime() * 180) + 1) / 4)
             else
                 this:SetAlpha(1)
             end
diff --git a/libs/green_t.lua b/libs/green_t.lua
index 86ea337..13f1fa5 100644
--- a/libs/green_t.lua
+++ b/libs/green_t.lua
@@ -3,10 +3,10 @@ green_t = module
 local next, setn, type, setmetatable = next, table.setn, type, setmetatable
 local wipe, release, acquire, acquire_temp
 
-local pool, pool_size, overflow_pool, tmp = {}, 0, setmetatable({}, {__mode='k'}), {}
+local pool, pool_size, overflow_pool, auto_release = {}, 0, setmetatable({}, {__mode='k'}), {}
 
 CreateFrame('Frame'):SetScript('OnUpdate', function()
-	for t in tmp do release(t) end; wipe(tmp)
+	for t in auto_release do release(t) end; wipe(auto_release)
 end)
 
 function wipe(t)
@@ -18,7 +18,7 @@ end
 public.wipe = wipe
 
 function release(t)
-	wipe(t); tmp[t] = nil
+	wipe(t); auto_release[t] = nil
 	if pool_size < 50 then
 		pool_size = pool_size + 1
 		pool[pool_size] = t
@@ -39,7 +39,7 @@ function acquire()
 end
 public.t.get = acquire
 
-function acquire_temp() local t = acquire(); tmp[t] = true; return t end
+function acquire_temp() local t = acquire(); auto_release[t] = true; return t end
 public.tt.get = acquire_temp
 
 do local mt = {__newindex=nop}
@@ -47,14 +47,14 @@ do local mt = {__newindex=nop}
 end
 
 do local f, mt
-	f = function(_, v) if type(v) == 'table' then tmp[v] = true end return v end
+	f = function(_, v) if type(v) == 'table' then auto_release[v] = true end return v end
 	mt = {__call=f, __sub=f}
-	public.temp {get=function() return setmetatable(acquire_temp(), mt) end, set=function(t) tmp[t] = true end}
+	public.temp {get=function() return setmetatable(acquire_temp(), mt) end, set=function(t) auto_release[t] = true end}
 end
 do local f, mt
-	f = function(_, v) if type(v) == 'table' then tmp[v] = nil end return v end
+	f = function(_, v) if type(v) == 'table' then auto_release[v] = nil end return v end
 	mt = {__call=f, __sub=f}
-	public.perm {get=function() return setmetatable(acquire_temp(), mt) end, set=function(t) tmp[t] = nil end}
+	public.perm {get=function() return setmetatable(acquire_temp(), mt) end, set=function(t) auto_release[t] = nil end}
 end
 
 --T :kek(5) :foo(1) :bar{} :moo 'trump' TODO possible alternative constructor syntax, but high overhead, more elegant because not limited, sometimes better looking.
diff --git a/util/core.lua b/util/core.lua
index 3dacb6a..6657bc7 100644
--- a/util/core.lua
+++ b/util/core.lua
@@ -2,6 +2,15 @@ aux 'core'
 
 public.join = _G.table.concat
 
+do local mt = {__index=function(self, key) setmetatable(self, nil); return getfenv(2)[key] end}
+	function public.__(t) return setmetatable(t, mt) end
+end
+
+function public.range(arg1, arg2)
+	local i, n = arg2 and arg1 or 1, arg2 or arg1
+	if i <= n then return first, range(i + 1, n) end
+end
+
 function public.replicate(count, value)
 	if count > 0 then return value, replicate(count - 1, value) end
 end
@@ -36,32 +45,22 @@ do
 		end
 		return f(unpack(params))
 	end
-	local a1b2 = {a=1, b=2}
 	function public.L(body, ...)
 		if type(body) == 'function' then
 			local arg1 = arg
 			return function(...) return helper(body, arg1, arg) end
 		else
-			error(debugstack(1, 10))
-			body = gsub(body, '_([ab])', function(char) return '_'..a1b2[char] end)
-			local lambda = loadstring 'return function(_1,_2,_3,_4,_5,_6,_7,_8,_9)'..f..' end'
+--			body = gsub(body, '_([ab])', function(char) return '_'.. end)
+--			local lambda = loadstring('return function(_1,_2,_3,_4,_5,_6,_7,_8,_9)'..body..' end')
+			local lambda = loadstring('return '..body) or loadstring(body)
 			setfenv(lambda, getfenv(2))
 			return lambda
 		end
 	end
 end
 
-function public.call(f, ...) temp=arg
-	if f then
-		return f(unpack(arg))
-	end
-end
-
 function public.index(t, ...) temp=arg
-	for i = 1, arg.n do
-		t = t and t[arg[i]]
-	end
-	return t
+	for i = 1, arg.n do t = t and t[arg[i]] end return t
 end
 
 public.huge = 1.8*10^308