diff --git a/init.lua b/init.lua
index 28524cf..a7582aa 100644
--- a/init.lua
+++ b/init.lua
@@ -257,4 +257,4 @@ end
 --i3.files.tests.tabs()
 --i3.files.tests.operators()
 --i3.files.tests.compression()
---i3.files.tests.custom_recipes(http)
+--i3.files.tests.custom_recipes()
diff --git a/src/api.lua b/src/api.lua
index ac75c9b..876f8c2 100644
--- a/src/api.lua
+++ b/src/api.lua
@@ -1,5 +1,5 @@
-local make_fs = i3.files.gui()
 local http = ...
+local make_fs = i3.files.gui()
 
 IMPORT("gmatch", "split")
 IMPORT("S", "err", "fmt", "reg_items")
@@ -22,7 +22,7 @@ end
 function i3.register_craft(def)
 	local width, c = 0, 0
 
-	if true_str(def.url) then
+	if http and true_str(def.url) then
 		http.fetch({url = def.url}, function(result)
 			if result.succeeded then
 				local t = core.parse_json(result.data)
@@ -51,7 +51,7 @@ function i3.register_craft(def)
 		def.result = nil
 	end
 
-	if not true_str(def.output) then
+	if not true_str(def.output) and not def.url then
 		return err "i3.register_craft: output missing"
 	end
 
@@ -69,9 +69,7 @@ function i3.register_craft(def)
 		end
 
 		local cp = copy(def.grid)
-		sort(cp, function(a, b)
-			return #a > #b
-		end)
+		sort(cp, function(a, b) return #a > #b end)
 
 		width = #cp[1]
 
@@ -86,7 +84,8 @@ function i3.register_craft(def)
 			def.items[c] = def.key[symbol]
 		end
 	else
-		local items, len = def.items, #def.items
+		local items = copy(def.items)
+		local len = #items
 		def.items = {}
 
 		for i = 1, len do
@@ -98,14 +97,18 @@ function i3.register_craft(def)
 		end
 
 		for i = 1, len do
-			while #split(items[i], ",") < width do
+			while #split(items[i], ",", true) < width do
 				items[i] = fmt("%s,", items[i])
 			end
 		end
 
-		for name in gmatch(concat(items, ","), "[%s%w_:]+") do
-			c++
-			def.items[c] = clean_name(name)
+		for _, line in ipairs(items) do
+			line = split(line, ",", true)
+
+			for _, v in ipairs(line) do
+				c++
+				def.items[c] = clean_name(v)
+			end
 		end
 	end
 
diff --git a/tests/test_custom_recipes.lua b/tests/test_custom_recipes.lua
index fe15def..0bcabcf 100644
--- a/tests/test_custom_recipes.lua
+++ b/tests/test_custom_recipes.lua
@@ -38,6 +38,24 @@ i3.register_craft({
 	items = {"default:copper_ingot 7, default:tin_ingot, default:steel_ingot 2"},
 })
 
+i3.register_craft {
+	result = "default:tree",
+	items = {
+		"default:wood",
+		"",
+		"default:wood"
+	},
+}
+
+i3.register_craft {
+	result = "default:cobble 16",
+	items = {
+		"default:stone, default:stone",
+		"default:stone,              , default:stone",
+		", default:stone, default:stone",
+	}
+}
+
 i3.register_craft({
 	grid = {
 		"X",
@@ -311,22 +329,3 @@ i3.register_craft({
 	},
 	result = "default:mese 3",
 })
-
-i3.register_craft({
-	grid = {
-		"X  #",
-		" ## ",
-		"X#X#",
-		"#X#X#",
-		"X  X##X#X",
-		" ## ",
-		"#X#X#",
-		"#X#X#",
-		"X  #",
-	},
-	key = {
-		['#'] = "default:wood",
-		['X'] = "default:glass",
-	},
-	result = "default:mese 3",
-})