diff --git a/mods/default/functions.lua b/mods/default/functions.lua
index 3525c1a8..426e27c4 100644
--- a/mods/default/functions.lua
+++ b/mods/default/functions.lua
@@ -7,20 +7,20 @@
 function default.node_sound_defaults(table)
 	table = table or {}
 	table.footstep = table.footstep or
-			{name="", gain=1.0}
+			{name = "", gain = 1.0}
 	table.dug = table.dug or
-			{name="default_dug_node", gain=0.25}
+			{name = "default_dug_node", gain = 0.25}
 	table.place = table.place or
-			{name="default_place_node_hard", gain=1.0}
+			{name = "default_place_node_hard", gain = 1.0}
 	return table
 end
 
 function default.node_sound_stone_defaults(table)
 	table = table or {}
 	table.footstep = table.footstep or
-			{name="default_hard_footstep", gain=0.5}
+			{name = "default_hard_footstep", gain = 0.5}
 	table.dug = table.dug or
-			{name="default_hard_footstep", gain=1.0}
+			{name = "default_hard_footstep", gain = 1.0}
 	default.node_sound_defaults(table)
 	return table
 end
@@ -28,11 +28,11 @@ end
 function default.node_sound_dirt_defaults(table)
 	table = table or {}
 	table.footstep = table.footstep or
-			{name="default_dirt_footstep", gain=1.0}
+			{name = "default_dirt_footstep", gain = 1.0}
 	table.dug = table.dug or
-			{name="default_dirt_footstep", gain=1.5}
+			{name = "default_dirt_footstep", gain = 1.5}
 	table.place = table.place or
-			{name="default_place_node", gain=1.0}
+			{name = "default_place_node", gain = 1.0}
 	default.node_sound_defaults(table)
 	return table
 end
@@ -40,11 +40,11 @@ end
 function default.node_sound_sand_defaults(table)
 	table = table or {}
 	table.footstep = table.footstep or
-			{name="default_sand_footstep", gain=0.2}
+			{name = "default_sand_footstep", gain = 0.2}
 	table.dug = table.dug or
-			{name="default_sand_footstep", gain=0.4}
+			{name = "default_sand_footstep", gain = 0.4}
 	table.place = table.place or
-			{name="default_place_node", gain=1.0}
+			{name = "default_place_node", gain = 1.0}
 	default.node_sound_defaults(table)
 	return table
 end
@@ -52,9 +52,9 @@ end
 function default.node_sound_wood_defaults(table)
 	table = table or {}
 	table.footstep = table.footstep or
-			{name="default_wood_footstep", gain=0.5}
+			{name = "default_wood_footstep", gain = 0.5}
 	table.dug = table.dug or
-			{name="default_wood_footstep", gain=1.0}
+			{name = "default_wood_footstep", gain = 1.0}
 	default.node_sound_defaults(table)
 	return table
 end
@@ -62,13 +62,13 @@ end
 function default.node_sound_leaves_defaults(table)
 	table = table or {}
 	table.footstep = table.footstep or
-			{name="default_grass_footstep", gain=0.35}
+			{name = "default_grass_footstep", gain = 0.35}
 	table.dug = table.dug or
-			{name="default_grass_footstep", gain=0.7}
+			{name = "default_grass_footstep", gain = 0.7}
 	table.dig = table.dig or
-			{name="default_dig_crumbly", gain=0.4}
+			{name = "default_dig_crumbly", gain = 0.4}
 	table.place = table.place or
-			{name="default_place_node", gain=1.0}
+			{name = "default_place_node", gain = 1.0}
 	default.node_sound_defaults(table)
 	return table
 end
@@ -76,9 +76,9 @@ end
 function default.node_sound_glass_defaults(table)
 	table = table or {}
 	table.footstep = table.footstep or
-			{name="default_glass_footstep", gain=0.5}
+			{name = "default_glass_footstep", gain = 0.5}
 	table.dug = table.dug or
-			{name="default_break_glass", gain=1.0}
+			{name = "default_break_glass", gain = 1.0}
 	default.node_sound_defaults(table)
 	return table
 end
@@ -89,13 +89,13 @@ end
 --
 
 default.cool_lava_source = function(pos)
-	minetest.set_node(pos, {name="default:obsidian"})
-	minetest.sound_play("default_cool_lava", {pos = pos,  gain = 0.25})
+	minetest.set_node(pos, {name = "default:obsidian"})
+	minetest.sound_play("default_cool_lava", {pos = pos, gain = 0.25})
 end
 
 default.cool_lava_flowing = function(pos)
-	minetest.set_node(pos, {name="default:stone"})
-	minetest.sound_play("default_cool_lava", {pos = pos,  gain = 0.25})
+	minetest.set_node(pos, {name = "default:stone"})
+	minetest.sound_play("default_cool_lava", {pos = pos, gain = 0.25})
 end
 
 minetest.register_abm({
@@ -123,55 +123,53 @@ minetest.register_abm({
 -- Papyrus and cactus growing
 --
 
+-- wrapping the functions in abm action is necessary to make overriding them possible
+
 function default.grow_cactus(pos, node)
 	if node.param2 >= 4 then
 		return
 	end
-	pos.y = pos.y-1
+	pos.y = pos.y - 1
 	if minetest.get_item_group(minetest.get_node(pos).name, "sand") == 0 then
 		return
 	end
-	pos.y = pos.y+1
+	pos.y = pos.y + 1
 	local height = 0
-	while node.name == "default:cactus" and height < 4 and node.param2 == 0 do
-		height = height+1
-		pos.y = pos.y+1
+	while node.name == "default:cactus" and height < 4 do
+		height = height + 1
+		pos.y = pos.y + 1
 		node = minetest.get_node(pos)
 	end
-	if height == 4
-	or node.name ~= "air" then
+	if height == 4 or node.name ~= "air" then
 		return
 	end
-	minetest.set_node(pos, {name="default:cactus"})
+	minetest.set_node(pos, {name = "default:cactus"})
 	return true
 end
 
 function default.grow_papyrus(pos, node)
-	pos.y = pos.y-1
+	pos.y = pos.y - 1
 	local name = minetest.get_node(pos).name
-	if name ~= "default:dirt_with_grass"
-	and name ~= "default:dirt" then
+	if name ~= "default:dirt_with_grass" and name ~= "default:dirt" then
 		return
 	end
 	if not minetest.find_node_near(pos, 3, {"group:water"}) then
 		return
 	end
-	pos.y = pos.y+1
+	pos.y = pos.y + 1
 	local height = 0
 	while node.name == "default:papyrus" and height < 4 do
-		height = height+1
-		pos.y = pos.y+1
+		height = height + 1
+		pos.y = pos.y + 1
 		node = minetest.get_node(pos)
 	end
-	if height == 4
-	or node.name ~= "air" then
+	if height == 4 or node.name ~= "air" then
 		return
 	end
-	minetest.set_node(pos, {name="default:papyrus"})
+	minetest.set_node(pos, {name = "default:papyrus"})
 	return true
 end
 
--- wrapping the functions in abm action is necessary to make overriding them possible
 minetest.register_abm({
 	nodenames = {"default:cactus"},
 	neighbors = {"group:sand"},
@@ -255,8 +253,10 @@ minetest.register_abm({
 			if trunkp then
 				local n = minetest.get_node(trunkp)
 				local reg = minetest.registered_nodes[n.name]
-				-- Assume ignore is a trunk, to make the thing work at the border of the active area
-				if n.name == "ignore" or (reg and reg.groups.tree and reg.groups.tree ~= 0) then
+				-- Assume ignore is a trunk, to make the thing
+				-- work at the border of the active area
+				if n.name == "ignore" or (reg and reg.groups.tree and
+						reg.groups.tree ~= 0) then
 					--print("cached trunk still exists")
 					return
 				end
@@ -270,7 +270,8 @@ minetest.register_abm({
 		end
 		default.leafdecay_trunk_find_allow_accumulator =
 				default.leafdecay_trunk_find_allow_accumulator - 1
-		-- Assume ignore is a trunk, to make the thing work at the border of the active area
+		-- Assume ignore is a trunk, to make the thing
+		-- work at the border of the active area
 		local p1 = minetest.find_node_near(p0, d, {"ignore", "group:tree"})
 		if p1 then
 			do_preserve = true
@@ -301,6 +302,7 @@ minetest.register_abm({
 	end
 })
 
+
 --
 -- Grass growing
 --
@@ -310,12 +312,12 @@ minetest.register_abm({
 	interval = 2,
 	chance = 200,
 	action = function(pos, node)
-		local above = {x=pos.x, y=pos.y+1, z=pos.z}
+		local above = {x = pos.x, y = pos.y + 1, z = pos.z}
 		local name = minetest.get_node(above).name
 		local nodedef = minetest.registered_nodes[name]
-		if nodedef and (nodedef.sunlight_propagates or nodedef.paramtype == "light")
-				and nodedef.liquidtype == "none"
-				and (minetest.get_node_light(above) or 0) >= 13 then
+		if nodedef and (nodedef.sunlight_propagates or nodedef.paramtype == "light") and
+				nodedef.liquidtype == "none" and
+				(minetest.get_node_light(above) or 0) >= 13 then
 			if name == "default:snow" or name == "default:snowblock" then
 				minetest.set_node(pos, {name = "default:dirt_with_snow"})
 			else
@@ -330,13 +332,14 @@ minetest.register_abm({
 	interval = 2,
 	chance = 20,
 	action = function(pos, node)
-		local above = {x=pos.x, y=pos.y+1, z=pos.z}
+		local above = {x = pos.x, y = pos.y + 1, z = pos.z}
 		local name = minetest.get_node(above).name
 		local nodedef = minetest.registered_nodes[name]
-		if name ~= "ignore" and nodedef
-				and not ((nodedef.sunlight_propagates or nodedef.paramtype == "light")
-				and nodedef.liquidtype == "none") then
+		if name ~= "ignore" and nodedef and not ((nodedef.sunlight_propagates or
+				nodedef.paramtype == "light") and
+				nodedef.liquidtype == "none") then
 			minetest.set_node(pos, {name = "default:dirt"})
 		end
 	end
 })
+