Core: builtin: crafts: ability to find custom crafts via `core.ge…

…t_craft_recipe()`. Closes #1814

mods/lord/Core/builtin/src/FormSpec.lua

@@ -562,7 +562,7 @@ function FormSpec.image_button(X,Y,W,H,texture_name,name,label,noclip,drawborder
 	return 'image_button['..
 		X..','..Y..';' ..W..','..H..';'..
 		texture_name..';'..name..';'..optional(e(label))..
-		optional(noclip)..optional(drawborder)..optional(pressed_texture_name)..
+		optional(bool_str(noclip))..optional(bool_str(drawborder))..optional(pressed_texture_name)..
 	']'
 end
 
@@ -574,7 +574,7 @@ end
 ---
 --- @return string
 function FormSpec.item_image_button(X,Y,W,H,item_name,name,label)
-	return 'item_image_button['..X..','..Y..';' ..W..','..H..';'..item_name..';'..name..optional(e(label))..']'
+	return 'item_image_button['..X..','..Y..';' ..W..','..H..';'..item_name..';'..name..';'..e(label)..']'
 end
 
 ---

mods/lord/Core/builtin/src/craft/method.lua

@@ -341,6 +341,38 @@ function minetest.get_craft_result(input)
 	return output, input
 end
 
--- to-do
---function minetest.get_craft_recipe(output)
---end
+
+--- @param output string
+--- @return minetest.CraftRecipe|nil
+local function find_craft_recipe(output)
+	for method, method_recipes in pairs(method_registered_recipes) do
+		for type, type_recipes in pairs(method_recipes) do
+			for recipe_item_name, recipes in pairs(type_recipes) do
+				if recipe_item_name == output then
+					return recipes[1]
+				end
+			end
+		end
+	end
+end
+
+local mt_get_craft_recipe = minetest.get_craft_recipe
+--- @param output string
+--- @return RecipeInput|minetest.CraftRecipe|nil
+function minetest.get_craft_recipe(output, method, type)
+	method = method or minetest.CraftMethod.DEFAULT
+	type   = type   or minetest.CraftType.NORMAL
+
+	if method == minetest.CraftMethod.DEFAULT then
+		local found = mt_get_craft_recipe(output)
+		if found then
+			return found
+		end
+
+		return find_craft_recipe(output)
+	end
+
+	local r = method_registered_recipes
+
+	return r[method] and r[method][type] and r[method][type][output] and r[method][type][output][1]
+end