Fix miscellaneous bugs

multitask/lib/multitask.lua

@@ -12,12 +12,14 @@ mt.newPool = function(pool_options)
 	pool.clear = function()
 		pool.threads = {}
 		pool.namedThreads = {}
+		pool.byID = {}
 		pool.threadcount = 0
 	end
 	local idcount = 0
 	
 	pool.add = function(fn, options)
 		options = options or {}
+		if not fn then error("expected function",2) end
 		options.co = coroutine.create(function() local retv = fn(options) if retv~=nil then options.retv=retv end os.queueEvent("ignore_this") end)
 		options.fn = fn
 		options.id = idcount
@@ -29,7 +31,7 @@ mt.newPool = function(pool_options)
 		pool.byID[options.id] = options
 		pool.threadcount = pool.threadcount + 1
 		os.queueEvent("pool_fn_added",options,pool)
-		return options.co
+		return options
 	end
 	
 	pool.rm = function(name)
@@ -74,14 +76,16 @@ mt.newPool = function(pool_options)
 			for thread, options in pairs(pool.threads) do
 				if coroutine.status(thread) ~= "dead" then
 					if event[1] == options.filter or options.filter == nil then
-						local x,e,y = coroutine.resume(thread,unpack(event))
-						options.filter = y
+						local x,e = coroutine.resume(thread,unpack(event))
+						
 						if not x then
 							os.queueEvent("pool_fn_crash",options.id,pool.id,e)
 							pool.rm(options)
 							if pool_options.crash_on_error then
 								error(e)
 							end
+						else
+							options.filter = e
 						end
 					end
 				else
@@ -99,6 +103,8 @@ mt.newPool = function(pool_options)
 			local to_match = nil
 			if type(v) == "table" then
 				to_match = v.id
+			elseif type(v) == "thread" then
+				to_match = pool.threads[v].id
 			elseif type(name)=="number" then
 				if not pool.byID[name] then
 					error("no thread with ID "..name)

multitask/pkgmeta.ltn

@@ -1,5 +1,5 @@
 {
-    ["version"] = "0.1.2",
+    ["version"] = "0.1.2-1",
     ["dependencies"] = {},
     ["description"] = "Adds convinientish multitasking functionality.",
     ["files"] = {