From aeb9841e3ab4fab5fa5457ddf101122a4408c710 Mon Sep 17 00:00:00 2001
From: SmallJoker <mk939@ymail.com>
Date: Sat, 17 Jul 2021 10:35:39 +0200
Subject: [PATCH] Remove default hard dependency for use in devtest

---
 README.md    |  4 ++++
 category.lua | 11 ++++++-----
 init.lua     |  2 +-
 internal.lua |  2 ++
 mod.conf     |  4 ++--
 5 files changed, 15 insertions(+), 8 deletions(-)

diff --git a/README.md b/README.md
index d159c02..2659357 100644
--- a/README.md
+++ b/README.md
@@ -25,6 +25,10 @@ Unified Inventory replaces the default survival and creative inventory.
 ## Requirements
 
  * Minetest 5.4.0+
+ * Mod `default` for category filters (contained in Minetest Game)
+ * Mod `farming` for craftable bags (contained in Minetest Game)
+ * Mod `datastorage` for waypoints (deprecated)
+
 
 # Licenses
 
diff --git a/category.lua b/category.lua
index 72e4038..d0fee5e 100644
--- a/category.lua
+++ b/category.lua
@@ -70,7 +70,7 @@ end
 local function ensure_category_exists(category_name)
 	if not unified_inventory.registered_categories[category_name] then
 		unified_inventory.registered_categories[category_name] = {
-			symbol = "default:stick",
+			symbol = "unknown_item.png",
 			label = category_name
 		}
 	end
@@ -81,16 +81,17 @@ end
 
 function unified_inventory.register_category(category_name, config)
 	ensure_category_exists(category_name)
-	if config and config.symbol then
+	config = config or {}
+	if config.symbol then
 		unified_inventory.set_category_symbol(category_name, config.symbol)
 	end
-	if config and config.label then
+	if config.label then
 		unified_inventory.set_category_label(category_name, config.label)
 	end
-	if config and config.index then
+	if config.index then
 		unified_inventory.set_category_index(category_name, config.index)
 	end
-	if config and config.items then
+	if config.items then
 		unified_inventory.add_category_items(category_name, config.items)
 	end
 	update_category_list()
diff --git a/init.lua b/init.lua
index 391eb3c..9cf6c0f 100644
--- a/init.lua
+++ b/init.lua
@@ -1,4 +1,4 @@
--- Unified Inventory for Minetest >= 0.4.16
+-- Unified Inventory
 
 local modpath = minetest.get_modpath(minetest.get_current_modname())
 local worldpath = minetest.get_worldpath()
diff --git a/internal.lua b/internal.lua
index f4d8b44..cdf71ed 100644
--- a/internal.lua
+++ b/internal.lua
@@ -29,6 +29,8 @@ local function formspec_button(ui_peruser, name, image, offset, pos, scale, labe
 	local element = 'image_button'
 	if minetest.registered_items[image] then
 		element = 'item_image_button'
+	elseif image:find(":", 1, true) then
+		image = "unknown_item.png"
 	end
 	local spc = (1-scale)*ui_peruser.btn_size/2
 	local size = ui_peruser.btn_size*scale
diff --git a/mod.conf b/mod.conf
index 89be528..3d27d29 100644
--- a/mod.conf
+++ b/mod.conf
@@ -1,6 +1,6 @@
 name = unified_inventory
-depends = default
-optional_depends = creative, sfinv, datastorage, farming
+
+optional_depends = default, creative, sfinv, datastorage, farming
 description = """
 Unified Inventory replaces the default survival and creative inventory.
 It adds a nicer interface and a number of features, such as a crafting guide.