diff --git a/mods/default/crafting.lua b/mods/default/crafting.lua
index b49dc487..94811338 100644
--- a/mods/default/crafting.lua
+++ b/mods/default/crafting.lua
@@ -1,51 +1,51 @@
 -- mods/default/crafting.lua
 
 minetest.register_craft({
-	output = 'default:wood 4',
+	output = "default:wood 4",
 	recipe = {
-		{'default:tree'},
+		{"default:tree"},
 	}
 })
 
 minetest.register_craft({
-	output = 'default:junglewood 4',
+	output = "default:junglewood 4",
 	recipe = {
-		{'default:jungletree'},
+		{"default:jungletree"},
 	}
 })
 
 minetest.register_craft({
-	output = 'default:pine_wood 4',
+	output = "default:pine_wood 4",
 	recipe = {
-		{'default:pine_tree'},
+		{"default:pine_tree"},
 	}
 })
 
 minetest.register_craft({
-	output = 'default:acacia_wood 4',
+	output = "default:acacia_wood 4",
 	recipe = {
-		{'default:acacia_tree'},
+		{"default:acacia_tree"},
 	}
 })
 
 minetest.register_craft({
-	output = 'default:aspen_wood 4',
+	output = "default:aspen_wood 4",
 	recipe = {
-		{'default:aspen_tree'},
+		{"default:aspen_tree"},
 	}
 })
 
 minetest.register_craft({
-	output = 'default:wood',
+	output = "default:wood",
 	recipe = {
-		{'default:bush_stem'},
+		{"default:bush_stem"},
 	}
 })
 
 minetest.register_craft({
-	output = 'default:acacia_wood',
+	output = "default:acacia_wood",
 	recipe = {
-		{'default:acacia_bush_stem'},
+		{"default:acacia_bush_stem"},
 	}
 })
 
@@ -57,143 +57,143 @@ minetest.register_craft({
 })
 
 minetest.register_craft({
-	output = 'default:stick 4',
+	output = "default:stick 4",
 	recipe = {
-		{'group:wood'},
+		{"group:wood"},
 	}
 })
 
 minetest.register_craft({
-	output = 'default:sign_wall_steel 3',
+	output = "default:sign_wall_steel 3",
 	recipe = {
-		{'default:steel_ingot', 'default:steel_ingot', 'default:steel_ingot'},
-		{'default:steel_ingot', 'default:steel_ingot', 'default:steel_ingot'},
-		{'', 'group:stick', ''},
+		{"default:steel_ingot", "default:steel_ingot", "default:steel_ingot"},
+		{"default:steel_ingot", "default:steel_ingot", "default:steel_ingot"},
+		{"", "group:stick", ""},
 	}
 })
 
 minetest.register_craft({
-	output = 'default:sign_wall_wood 3',
+	output = "default:sign_wall_wood 3",
 	recipe = {
-		{'group:wood', 'group:wood', 'group:wood'},
-		{'group:wood', 'group:wood', 'group:wood'},
-		{'', 'group:stick', ''},
+		{"group:wood", "group:wood", "group:wood"},
+		{"group:wood", "group:wood", "group:wood"},
+		{"", "group:stick", ""},
 	}
 })
 
 minetest.register_craft({
-	output = 'default:torch 4',
+	output = "default:torch 4",
 	recipe = {
-		{'default:coal_lump'},
-		{'group:stick'},
+		{"default:coal_lump"},
+		{"group:stick"},
 	}
 })
 
 minetest.register_craft({
-	output = 'default:pick_wood',
+	output = "default:pick_wood",
 	recipe = {
-		{'group:wood', 'group:wood', 'group:wood'},
-		{'', 'group:stick', ''},
-		{'', 'group:stick', ''},
+		{"group:wood", "group:wood", "group:wood"},
+		{"", "group:stick", ""},
+		{"", "group:stick", ""},
 	}
 })
 
 minetest.register_craft({
-	output = 'default:pick_stone',
+	output = "default:pick_stone",
 	recipe = {
-		{'group:stone', 'group:stone', 'group:stone'},
-		{'', 'group:stick', ''},
-		{'', 'group:stick', ''},
+		{"group:stone", "group:stone", "group:stone"},
+		{"", "group:stick", ""},
+		{"", "group:stick", ""},
 	}
 })
 
 minetest.register_craft({
-	output = 'default:pick_steel',
+	output = "default:pick_steel",
 	recipe = {
-		{'default:steel_ingot', 'default:steel_ingot', 'default:steel_ingot'},
-		{'', 'group:stick', ''},
-		{'', 'group:stick', ''},
+		{"default:steel_ingot", "default:steel_ingot", "default:steel_ingot"},
+		{"", "group:stick", ""},
+		{"", "group:stick", ""},
 	}
 })
 
 minetest.register_craft({
-	output = 'default:pick_bronze',
+	output = "default:pick_bronze",
 	recipe = {
-		{'default:bronze_ingot', 'default:bronze_ingot', 'default:bronze_ingot'},
-		{'', 'group:stick', ''},
-		{'', 'group:stick', ''},
+		{"default:bronze_ingot", "default:bronze_ingot", "default:bronze_ingot"},
+		{"", "group:stick", ""},
+		{"", "group:stick", ""},
 	}
 })
 
 minetest.register_craft({
-	output = 'default:pick_mese',
+	output = "default:pick_mese",
 	recipe = {
-		{'default:mese_crystal', 'default:mese_crystal', 'default:mese_crystal'},
-		{'', 'group:stick', ''},
-		{'', 'group:stick', ''},
+		{"default:mese_crystal", "default:mese_crystal", "default:mese_crystal"},
+		{"", "group:stick", ""},
+		{"", "group:stick", ""},
 	}
 })
 
 minetest.register_craft({
-	output = 'default:pick_diamond',
+	output = "default:pick_diamond",
 	recipe = {
-		{'default:diamond', 'default:diamond', 'default:diamond'},
-		{'', 'group:stick', ''},
-		{'', 'group:stick', ''},
+		{"default:diamond", "default:diamond", "default:diamond"},
+		{"", "group:stick", ""},
+		{"", "group:stick", ""},
 	}
 })
 
 minetest.register_craft({
-	output = 'default:shovel_wood',
+	output = "default:shovel_wood",
 	recipe = {
-		{'group:wood'},
-		{'group:stick'},
-		{'group:stick'},
+		{"group:wood"},
+		{"group:stick"},
+		{"group:stick"},
 	}
 })
 
 minetest.register_craft({
-	output = 'default:shovel_stone',
+	output = "default:shovel_stone",
 	recipe = {
-		{'group:stone'},
-		{'group:stick'},
-		{'group:stick'},
+		{"group:stone"},
+		{"group:stick"},
+		{"group:stick"},
 	}
 })
 
 minetest.register_craft({
-	output = 'default:shovel_steel',
+	output = "default:shovel_steel",
 	recipe = {
-		{'default:steel_ingot'},
-		{'group:stick'},
-		{'group:stick'},
+		{"default:steel_ingot"},
+		{"group:stick"},
+		{"group:stick"},
 	}
 })
 
 minetest.register_craft({
-	output = 'default:shovel_bronze',
+	output = "default:shovel_bronze",
 	recipe = {
-		{'default:bronze_ingot'},
-		{'group:stick'},
-		{'group:stick'},
+		{"default:bronze_ingot"},
+		{"group:stick"},
+		{"group:stick"},
 	}
 })
 
 minetest.register_craft({
-	output = 'default:shovel_mese',
+	output = "default:shovel_mese",
 	recipe = {
-		{'default:mese_crystal'},
-		{'group:stick'},
-		{'group:stick'},
+		{"default:mese_crystal"},
+		{"group:stick"},
+		{"group:stick"},
 	}
 })
 
 minetest.register_craft({
-	output = 'default:shovel_diamond',
+	output = "default:shovel_diamond",
 	recipe = {
-		{'default:diamond'},
-		{'group:stick'},
-		{'group:stick'},
+		{"default:diamond"},
+		{"group:stick"},
+		{"group:stick"},
 	}
 })
 
@@ -201,135 +201,135 @@ minetest.register_craft({
 -- Recipes face left to match appearence in textures and inventory
 
 minetest.register_craft({
-	output = 'default:axe_wood',
+	output = "default:axe_wood",
 	recipe = {
-		{'group:wood', 'group:wood'},
-		{'group:wood', 'group:stick'},
-		{'', 'group:stick'},
+		{"group:wood", "group:wood"},
+		{"group:wood", "group:stick"},
+		{"", "group:stick"},
 	}
 })
 
 minetest.register_craft({
-	output = 'default:axe_stone',
+	output = "default:axe_stone",
 	recipe = {
-		{'group:stone', 'group:stone'},
-		{'group:stone', 'group:stick'},
-		{'', 'group:stick'},
+		{"group:stone", "group:stone"},
+		{"group:stone", "group:stick"},
+		{"", "group:stick"},
 	}
 })
 
 minetest.register_craft({
-	output = 'default:axe_steel',
+	output = "default:axe_steel",
 	recipe = {
-		{'default:steel_ingot', 'default:steel_ingot'},
-		{'default:steel_ingot', 'group:stick'},
-		{'', 'group:stick'},
+		{"default:steel_ingot", "default:steel_ingot"},
+		{"default:steel_ingot", "group:stick"},
+		{"", "group:stick"},
 	}
 })
 
 minetest.register_craft({
-	output = 'default:axe_bronze',
+	output = "default:axe_bronze",
 	recipe = {
-		{'default:bronze_ingot', 'default:bronze_ingot'},
-		{'default:bronze_ingot', 'group:stick'},
-		{'', 'group:stick'},
+		{"default:bronze_ingot", "default:bronze_ingot"},
+		{"default:bronze_ingot", "group:stick"},
+		{"", "group:stick"},
 	}
 })
 
 minetest.register_craft({
-	output = 'default:axe_mese',
+	output = "default:axe_mese",
 	recipe = {
-		{'default:mese_crystal', 'default:mese_crystal'},
-		{'default:mese_crystal', 'group:stick'},
-		{'', 'group:stick'},
+		{"default:mese_crystal", "default:mese_crystal"},
+		{"default:mese_crystal", "group:stick"},
+		{"", "group:stick"},
 	}
 })
 
 minetest.register_craft({
-	output = 'default:axe_diamond',
+	output = "default:axe_diamond",
 	recipe = {
-		{'default:diamond', 'default:diamond'},
-		{'default:diamond', 'group:stick'},
-		{'', 'group:stick'},
+		{"default:diamond", "default:diamond"},
+		{"default:diamond", "group:stick"},
+		{"", "group:stick"},
 	}
 })
 
 minetest.register_craft({
-	output = 'default:sword_wood',
+	output = "default:sword_wood",
 	recipe = {
-		{'group:wood'},
-		{'group:wood'},
-		{'group:stick'},
+		{"group:wood"},
+		{"group:wood"},
+		{"group:stick"},
 	}
 })
 
 minetest.register_craft({
-	output = 'default:sword_stone',
+	output = "default:sword_stone",
 	recipe = {
-		{'group:stone'},
-		{'group:stone'},
-		{'group:stick'},
+		{"group:stone"},
+		{"group:stone"},
+		{"group:stick"},
 	}
 })
 
 minetest.register_craft({
-	output = 'default:sword_steel',
+	output = "default:sword_steel",
 	recipe = {
-		{'default:steel_ingot'},
-		{'default:steel_ingot'},
-		{'group:stick'},
+		{"default:steel_ingot"},
+		{"default:steel_ingot"},
+		{"group:stick"},
 	}
 })
 
 minetest.register_craft({
-	output = 'default:sword_bronze',
+	output = "default:sword_bronze",
 	recipe = {
-		{'default:bronze_ingot'},
-		{'default:bronze_ingot'},
-		{'group:stick'},
+		{"default:bronze_ingot"},
+		{"default:bronze_ingot"},
+		{"group:stick"},
 	}
 })
 
 minetest.register_craft({
-	output = 'default:sword_mese',
+	output = "default:sword_mese",
 	recipe = {
-		{'default:mese_crystal'},
-		{'default:mese_crystal'},
-		{'group:stick'},
+		{"default:mese_crystal"},
+		{"default:mese_crystal"},
+		{"group:stick"},
 	}
 })
 
 minetest.register_craft({
-	output = 'default:sword_diamond',
+	output = "default:sword_diamond",
 	recipe = {
-		{'default:diamond'},
-		{'default:diamond'},
-		{'group:stick'},
+		{"default:diamond"},
+		{"default:diamond"},
+		{"group:stick"},
 	}
 })
 
 minetest.register_craft({
-	output = 'default:skeleton_key',
+	output = "default:skeleton_key",
 	recipe = {
-		{'default:gold_ingot'},
+		{"default:gold_ingot"},
 	}
 })
 
 minetest.register_craft({
-	output = 'default:chest',
+	output = "default:chest",
 	recipe = {
-		{'group:wood', 'group:wood', 'group:wood'},
-		{'group:wood', '', 'group:wood'},
-		{'group:wood', 'group:wood', 'group:wood'},
+		{"group:wood", "group:wood", "group:wood"},
+		{"group:wood", "", "group:wood"},
+		{"group:wood", "group:wood", "group:wood"},
 	}
 })
 
 minetest.register_craft({
-	output = 'default:chest_locked',
+	output = "default:chest_locked",
 	recipe = {
-		{'group:wood', 'group:wood', 'group:wood'},
-		{'group:wood', 'default:steel_ingot', 'group:wood'},
-		{'group:wood', 'group:wood', 'group:wood'},
+		{"group:wood", "group:wood", "group:wood"},
+		{"group:wood", "default:steel_ingot", "group:wood"},
+		{"group:wood", "group:wood", "group:wood"},
 	}
 })
 
@@ -340,59 +340,59 @@ minetest.register_craft( {
 })
 
 minetest.register_craft({
-	output = 'default:furnace',
+	output = "default:furnace",
 	recipe = {
-		{'group:stone', 'group:stone', 'group:stone'},
-		{'group:stone', '', 'group:stone'},
-		{'group:stone', 'group:stone', 'group:stone'},
+		{"group:stone", "group:stone", "group:stone"},
+		{"group:stone", "", "group:stone"},
+		{"group:stone", "group:stone", "group:stone"},
 	}
 })
 
 minetest.register_craft({
-	output = 'default:coalblock',
+	output = "default:coalblock",
 	recipe = {
-		{'default:coal_lump', 'default:coal_lump', 'default:coal_lump'},
-		{'default:coal_lump', 'default:coal_lump', 'default:coal_lump'},
-		{'default:coal_lump', 'default:coal_lump', 'default:coal_lump'},
+		{"default:coal_lump", "default:coal_lump", "default:coal_lump"},
+		{"default:coal_lump", "default:coal_lump", "default:coal_lump"},
+		{"default:coal_lump", "default:coal_lump", "default:coal_lump"},
 	}
 })
 
 minetest.register_craft({
-	output = 'default:coal_lump 9',
+	output = "default:coal_lump 9",
 	recipe = {
-		{'default:coalblock'},
+		{"default:coalblock"},
 	}
 })
 
 minetest.register_craft({
-	output = 'default:steelblock',
+	output = "default:steelblock",
 	recipe = {
-		{'default:steel_ingot', 'default:steel_ingot', 'default:steel_ingot'},
-		{'default:steel_ingot', 'default:steel_ingot', 'default:steel_ingot'},
-		{'default:steel_ingot', 'default:steel_ingot', 'default:steel_ingot'},
+		{"default:steel_ingot", "default:steel_ingot", "default:steel_ingot"},
+		{"default:steel_ingot", "default:steel_ingot", "default:steel_ingot"},
+		{"default:steel_ingot", "default:steel_ingot", "default:steel_ingot"},
 	}
 })
 
 minetest.register_craft({
-	output = 'default:steel_ingot 9',
+	output = "default:steel_ingot 9",
 	recipe = {
-		{'default:steelblock'},
+		{"default:steelblock"},
 	}
 })
 
 minetest.register_craft({
-	output = 'default:copperblock',
+	output = "default:copperblock",
 	recipe = {
-		{'default:copper_ingot', 'default:copper_ingot', 'default:copper_ingot'},
-		{'default:copper_ingot', 'default:copper_ingot', 'default:copper_ingot'},
-		{'default:copper_ingot', 'default:copper_ingot', 'default:copper_ingot'},
+		{"default:copper_ingot", "default:copper_ingot", "default:copper_ingot"},
+		{"default:copper_ingot", "default:copper_ingot", "default:copper_ingot"},
+		{"default:copper_ingot", "default:copper_ingot", "default:copper_ingot"},
 	}
 })
 
 minetest.register_craft({
-	output = 'default:copper_ingot 9',
+	output = "default:copper_ingot 9",
 	recipe = {
-		{'default:copperblock'},
+		{"default:copperblock"},
 	}
 })
 
@@ -422,50 +422,50 @@ minetest.register_craft({
 })
 
 minetest.register_craft({
-	output = 'default:bronzeblock',
+	output = "default:bronzeblock",
 	recipe = {
-		{'default:bronze_ingot', 'default:bronze_ingot', 'default:bronze_ingot'},
-		{'default:bronze_ingot', 'default:bronze_ingot', 'default:bronze_ingot'},
-		{'default:bronze_ingot', 'default:bronze_ingot', 'default:bronze_ingot'},
+		{"default:bronze_ingot", "default:bronze_ingot", "default:bronze_ingot"},
+		{"default:bronze_ingot", "default:bronze_ingot", "default:bronze_ingot"},
+		{"default:bronze_ingot", "default:bronze_ingot", "default:bronze_ingot"},
 	}
 })
 
 minetest.register_craft({
-	output = 'default:bronze_ingot 9',
+	output = "default:bronze_ingot 9",
 	recipe = {
-		{'default:bronzeblock'},
+		{"default:bronzeblock"},
 	}
 })
 
 minetest.register_craft({
-	output = 'default:goldblock',
+	output = "default:goldblock",
 	recipe = {
-		{'default:gold_ingot', 'default:gold_ingot', 'default:gold_ingot'},
-		{'default:gold_ingot', 'default:gold_ingot', 'default:gold_ingot'},
-		{'default:gold_ingot', 'default:gold_ingot', 'default:gold_ingot'},
+		{"default:gold_ingot", "default:gold_ingot", "default:gold_ingot"},
+		{"default:gold_ingot", "default:gold_ingot", "default:gold_ingot"},
+		{"default:gold_ingot", "default:gold_ingot", "default:gold_ingot"},
 	}
 })
 
 minetest.register_craft({
-	output = 'default:gold_ingot 9',
+	output = "default:gold_ingot 9",
 	recipe = {
-		{'default:goldblock'},
+		{"default:goldblock"},
 	}
 })
 
 minetest.register_craft({
-	output = 'default:diamondblock',
+	output = "default:diamondblock",
 	recipe = {
-		{'default:diamond', 'default:diamond', 'default:diamond'},
-		{'default:diamond', 'default:diamond', 'default:diamond'},
-		{'default:diamond', 'default:diamond', 'default:diamond'},
+		{"default:diamond", "default:diamond", "default:diamond"},
+		{"default:diamond", "default:diamond", "default:diamond"},
+		{"default:diamond", "default:diamond", "default:diamond"},
 	}
 })
 
 minetest.register_craft({
-	output = 'default:diamond 9',
+	output = "default:diamond 9",
 	recipe = {
-		{'default:diamondblock'},
+		{"default:diamondblock"},
 	}
 })
 
@@ -566,57 +566,57 @@ minetest.register_craft({
 })
 
 minetest.register_craft({
-	output = 'default:clay',
+	output = "default:clay",
 	recipe = {
-		{'default:clay_lump', 'default:clay_lump'},
-		{'default:clay_lump', 'default:clay_lump'},
+		{"default:clay_lump", "default:clay_lump"},
+		{"default:clay_lump", "default:clay_lump"},
 	}
 })
 
 minetest.register_craft({
-	output = 'default:clay_lump 4',
+	output = "default:clay_lump 4",
 	recipe = {
-		{'default:clay'},
+		{"default:clay"},
 	}
 })
 
 minetest.register_craft({
-	output = 'default:brick',
+	output = "default:brick",
 	recipe = {
-		{'default:clay_brick', 'default:clay_brick'},
-		{'default:clay_brick', 'default:clay_brick'},
+		{"default:clay_brick", "default:clay_brick"},
+		{"default:clay_brick", "default:clay_brick"},
 	}
 })
 
 minetest.register_craft({
-	output = 'default:clay_brick 4',
+	output = "default:clay_brick 4",
 	recipe = {
-		{'default:brick'},
+		{"default:brick"},
 	}
 })
 
 minetest.register_craft({
-	output = 'default:paper',
+	output = "default:paper",
 	recipe = {
-		{'default:papyrus', 'default:papyrus', 'default:papyrus'},
+		{"default:papyrus", "default:papyrus", "default:papyrus"},
 	}
 })
 
 minetest.register_craft({
-	output = 'default:book',
+	output = "default:book",
 	recipe = {
-		{'default:paper'},
-		{'default:paper'},
-		{'default:paper'},
+		{"default:paper"},
+		{"default:paper"},
+		{"default:paper"},
 	}
 })
 
 minetest.register_craft({
-	output = 'default:bookshelf',
+	output = "default:bookshelf",
 	recipe = {
-		{'group:wood', 'group:wood', 'group:wood'},
-		{'default:book', 'default:book', 'default:book'},
-		{'group:wood', 'group:wood', 'group:wood'},
+		{"group:wood", "group:wood", "group:wood"},
+		{"default:book", "default:book", "default:book"},
+		{"group:wood", "group:wood", "group:wood"},
 	}
 })
 
@@ -630,34 +630,34 @@ minetest.register_craft({
 })
 
 minetest.register_craft({
-	output = 'default:ladder_steel 15',
+	output = "default:ladder_steel 15",
 	recipe = {
-		{'default:steel_ingot', '', 'default:steel_ingot'},
-		{'default:steel_ingot', 'default:steel_ingot', 'default:steel_ingot'},
-		{'default:steel_ingot', '', 'default:steel_ingot'},
+		{"default:steel_ingot", "", "default:steel_ingot"},
+		{"default:steel_ingot", "default:steel_ingot", "default:steel_ingot"},
+		{"default:steel_ingot", "", "default:steel_ingot"},
 	}
 })
 
 minetest.register_craft({
-	output = 'default:mese',
+	output = "default:mese",
 	recipe = {
-		{'default:mese_crystal', 'default:mese_crystal', 'default:mese_crystal'},
-		{'default:mese_crystal', 'default:mese_crystal', 'default:mese_crystal'},
-		{'default:mese_crystal', 'default:mese_crystal', 'default:mese_crystal'},
+		{"default:mese_crystal", "default:mese_crystal", "default:mese_crystal"},
+		{"default:mese_crystal", "default:mese_crystal", "default:mese_crystal"},
+		{"default:mese_crystal", "default:mese_crystal", "default:mese_crystal"},
 	}
 })
 
 minetest.register_craft({
-	output = 'default:mese_crystal 9',
+	output = "default:mese_crystal 9",
 	recipe = {
-		{'default:mese'},
+		{"default:mese"},
 	}
 })
 
 minetest.register_craft({
-	output = 'default:mese_crystal_fragment 9',
+	output = "default:mese_crystal_fragment 9",
 	recipe = {
-		{'default:mese_crystal'},
+		{"default:mese_crystal"},
 	}
 })
 
@@ -671,10 +671,10 @@ minetest.register_craft({
 })
 
 minetest.register_craft({
-	output = 'default:meselamp',
+	output = "default:meselamp",
 	recipe = {
-		{'default:glass'},
-		{'default:mese_crystal'},
+		{"default:glass"},
+		{"default:mese_crystal"},
 	}
 })
 
@@ -688,85 +688,85 @@ minetest.register_craft({
 })
 
 minetest.register_craft({
-	output = 'default:obsidian_shard 9',
+	output = "default:obsidian_shard 9",
 	recipe = {
-		{'default:obsidian'}
+		{"default:obsidian"}
 	}
 })
 
 minetest.register_craft({
-	output = 'default:obsidian',
+	output = "default:obsidian",
 	recipe = {
-		{'default:obsidian_shard', 'default:obsidian_shard', 'default:obsidian_shard'},
-		{'default:obsidian_shard', 'default:obsidian_shard', 'default:obsidian_shard'},
-		{'default:obsidian_shard', 'default:obsidian_shard', 'default:obsidian_shard'},
+		{"default:obsidian_shard", "default:obsidian_shard", "default:obsidian_shard"},
+		{"default:obsidian_shard", "default:obsidian_shard", "default:obsidian_shard"},
+		{"default:obsidian_shard", "default:obsidian_shard", "default:obsidian_shard"},
 	}
 })
 
 minetest.register_craft({
-	output = 'default:obsidianbrick 4',
+	output = "default:obsidianbrick 4",
 	recipe = {
-		{'default:obsidian', 'default:obsidian'},
-		{'default:obsidian', 'default:obsidian'}
+		{"default:obsidian", "default:obsidian"},
+		{"default:obsidian", "default:obsidian"}
 	}
 })
 
 minetest.register_craft({
-	output = 'default:obsidian_block 9',
+	output = "default:obsidian_block 9",
 	recipe = {
-		{'default:obsidian', 'default:obsidian', 'default:obsidian'},
-		{'default:obsidian', 'default:obsidian', 'default:obsidian'},
-		{'default:obsidian', 'default:obsidian', 'default:obsidian'},
+		{"default:obsidian", "default:obsidian", "default:obsidian"},
+		{"default:obsidian", "default:obsidian", "default:obsidian"},
+		{"default:obsidian", "default:obsidian", "default:obsidian"},
 	}
 })
 
 minetest.register_craft({
-	output = 'default:stonebrick 4',
+	output = "default:stonebrick 4",
 	recipe = {
-		{'default:stone', 'default:stone'},
-		{'default:stone', 'default:stone'},
+		{"default:stone", "default:stone"},
+		{"default:stone", "default:stone"},
 	}
 })
 
 minetest.register_craft({
-	output = 'default:stone_block 9',
+	output = "default:stone_block 9",
 	recipe = {
-		{'default:stone', 'default:stone', 'default:stone'},
-		{'default:stone', 'default:stone', 'default:stone'},
-		{'default:stone', 'default:stone', 'default:stone'},
+		{"default:stone", "default:stone", "default:stone"},
+		{"default:stone", "default:stone", "default:stone"},
+		{"default:stone", "default:stone", "default:stone"},
 	}
 })
 
 minetest.register_craft({
-	output = 'default:desert_stonebrick 4',
+	output = "default:desert_stonebrick 4",
 	recipe = {
-		{'default:desert_stone', 'default:desert_stone'},
-		{'default:desert_stone', 'default:desert_stone'},
+		{"default:desert_stone", "default:desert_stone"},
+		{"default:desert_stone", "default:desert_stone"},
 	}
 })
 
 minetest.register_craft({
-	output = 'default:desert_stone_block 9',
+	output = "default:desert_stone_block 9",
 	recipe = {
-		{'default:desert_stone', 'default:desert_stone', 'default:desert_stone'},
-		{'default:desert_stone', 'default:desert_stone', 'default:desert_stone'},
-		{'default:desert_stone', 'default:desert_stone', 'default:desert_stone'},
+		{"default:desert_stone", "default:desert_stone", "default:desert_stone"},
+		{"default:desert_stone", "default:desert_stone", "default:desert_stone"},
+		{"default:desert_stone", "default:desert_stone", "default:desert_stone"},
 	}
 })
 
 minetest.register_craft({
-	output = 'default:snowblock',
+	output = "default:snowblock",
 	recipe = {
-		{'default:snow', 'default:snow', 'default:snow'},
-		{'default:snow', 'default:snow', 'default:snow'},
-		{'default:snow', 'default:snow', 'default:snow'},
+		{"default:snow", "default:snow", "default:snow"},
+		{"default:snow", "default:snow", "default:snow"},
+		{"default:snow", "default:snow", "default:snow"},
 	}
 })
 
 minetest.register_craft({
-	output = 'default:snow 9',
+	output = "default:snow 9",
 	recipe = {
-		{'default:snowblock'},
+		{"default:snowblock"},
 	}
 })
 
@@ -864,16 +864,16 @@ minetest.register_craft({
 })
 
 minetest.register_craft({
-	type = 'cooking',
-	output = 'default:gold_ingot',
-	recipe = 'default:skeleton_key',
+	type = "cooking",
+	output = "default:gold_ingot",
+	recipe = "default:skeleton_key",
 	cooktime = 5,
 })
 
 minetest.register_craft({
-	type = 'cooking',
-	output = 'default:gold_ingot',
-	recipe = 'default:key',
+	type = "cooking",
+	output = "default:gold_ingot",
+	recipe = "default:key",
 	cooktime = 5,
 })
 
diff --git a/mods/default/nodes.lua b/mods/default/nodes.lua
index bf7b43aa..b29f6797 100644
--- a/mods/default/nodes.lua
+++ b/mods/default/nodes.lua
@@ -245,7 +245,7 @@ minetest.register_node("default:stone", {
 	description = "Stone",
 	tiles = {"default_stone.png"},
 	groups = {cracky = 3, stone = 1},
-	drop = 'default:cobble',
+	drop = "default:cobble",
 	legacy_mineral = true,
 	sounds = default.node_sound_stone_defaults(),
 })
@@ -289,7 +289,7 @@ minetest.register_node("default:desert_stone", {
 	description = "Desert Stone",
 	tiles = {"default_desert_stone.png"},
 	groups = {cracky = 3, stone = 1},
-	drop = 'default:desert_cobble',
+	drop = "default:desert_cobble",
 	legacy_mineral = true,
 	sounds = default.node_sound_stone_defaults(),
 })
@@ -437,7 +437,7 @@ minetest.register_node("default:dirt_with_grass", {
 		{name = "default_dirt.png^default_grass_side.png",
 			tileable_vertical = false}},
 	groups = {crumbly = 3, soil = 1, spreading_dirt_type = 1},
-	drop = 'default:dirt',
+	drop = "default:dirt",
 	sounds = default.node_sound_dirt_defaults({
 		footstep = {name = "default_grass_footstep", gain = 0.25},
 	}),
@@ -449,7 +449,7 @@ minetest.register_node("default:dirt_with_grass_footsteps", {
 		{name = "default_dirt.png^default_grass_side.png",
 			tileable_vertical = false}},
 	groups = {crumbly = 3, soil = 1, not_in_creative_inventory = 1},
-	drop = 'default:dirt',
+	drop = "default:dirt",
 	sounds = default.node_sound_dirt_defaults({
 		footstep = {name = "default_grass_footstep", gain = 0.25},
 	}),
@@ -462,7 +462,7 @@ minetest.register_node("default:dirt_with_dry_grass", {
 		{name = "default_dirt.png^default_dry_grass_side.png",
 			tileable_vertical = false}},
 	groups = {crumbly = 3, soil = 1},
-	drop = 'default:dirt',
+	drop = "default:dirt",
 	sounds = default.node_sound_dirt_defaults({
 		footstep = {name = "default_grass_footstep", gain = 0.4},
 	}),
@@ -474,7 +474,7 @@ minetest.register_node("default:dirt_with_snow", {
 		{name = "default_dirt.png^default_snow_side.png",
 			tileable_vertical = false}},
 	groups = {crumbly = 3, soil = 1, spreading_dirt_type = 1, snowy = 1},
-	drop = 'default:dirt',
+	drop = "default:dirt",
 	sounds = default.node_sound_dirt_defaults({
 		footstep = {name = "default_snow_footstep", gain = 0.2},
 	}),
@@ -586,8 +586,8 @@ minetest.register_node("default:gravel", {
 	drop = {
 		max_items = 1,
 		items = {
-			{items = {'default:flint'}, rarity = 16},
-			{items = {'default:gravel'}}
+			{items = {"default:flint"}, rarity = 16},
+			{items = {"default:gravel"}}
 		}
 	}
 })
@@ -596,7 +596,7 @@ minetest.register_node("default:clay", {
 	description = "Clay",
 	tiles = {"default_clay.png"},
 	groups = {crumbly = 3},
-	drop = 'default:clay_lump 4',
+	drop = "default:clay_lump 4",
 	sounds = default.node_sound_dirt_defaults(),
 })
 
@@ -743,13 +743,13 @@ minetest.register_node("default:leaves", {
 		items = {
 			{
 				-- player will get sapling with 1/20 chance
-				items = {'default:sapling'},
+				items = {"default:sapling"},
 				rarity = 20,
 			},
 			{
 				-- player will get leaves only if he get no saplings,
 				-- this is because max_items is 1
-				items = {'default:leaves'},
+				items = {"default:leaves"},
 			}
 		}
 	},
@@ -845,8 +845,8 @@ minetest.register_node("default:jungleleaves", {
 	drop = {
 		max_items = 1,
 		items = {
-			{items = {'default:junglesapling'}, rarity = 20},
-			{items = {'default:jungleleaves'}}
+			{items = {"default:junglesapling"}, rarity = 20},
+			{items = {"default:jungleleaves"}}
 		}
 	},
 	sounds = default.node_sound_leaves_defaults(),
@@ -1170,7 +1170,7 @@ minetest.register_node("default:stone_with_coal", {
 	description = "Coal Ore",
 	tiles = {"default_stone.png^default_mineral_coal.png"},
 	groups = {cracky = 3},
-	drop = 'default:coal_lump',
+	drop = "default:coal_lump",
 	sounds = default.node_sound_stone_defaults(),
 })
 
@@ -1187,7 +1187,7 @@ minetest.register_node("default:stone_with_iron", {
 	description = "Iron Ore",
 	tiles = {"default_stone.png^default_mineral_iron.png"},
 	groups = {cracky = 2},
-	drop = 'default:iron_lump',
+	drop = "default:iron_lump",
 	sounds = default.node_sound_stone_defaults(),
 })
 
@@ -1204,7 +1204,7 @@ minetest.register_node("default:stone_with_copper", {
 	description = "Copper Ore",
 	tiles = {"default_stone.png^default_mineral_copper.png"},
 	groups = {cracky = 2},
-	drop = 'default:copper_lump',
+	drop = "default:copper_lump",
 	sounds = default.node_sound_stone_defaults(),
 })