Add more API funcs

API.md

@@ -2,6 +2,8 @@
 
 ### Custom tabs
 
+#### `i3.new_tab(def)`
+
 Custom tabs can be added to the `i3` inventory as follow (example):
 
 ```Lua
@@ -33,6 +35,16 @@ i3.new_tab {
 - `fs` is the formspec table which is callable with a metamethod. Each call adds a new entry.
 - `i3.set_fs(player)` must be called to update the formspec.
 
+##### `i3.delete_tab(name)`
+
+Deletes a tab by name.
+
+##### `i3.get_tabs()`
+
+Returns the list of registered tabs.
+
+---
+
 ### Custom recipes
 
 Custom recipes are nonconventional crafts outside the main crafting grid.

init.lua

@@ -1987,6 +1987,22 @@ function i3.new_tab(def)
 	tabs[#tabs + 1] = def
 end
 
+function i3.get_tabs()
+	return tabs
+end
+
+function i3.delete_tab(name)
+	if not true_str(name) then
+		return err "i3.delete_tab: name missing"
+	end
+
+	for i, def in ipairs(tabs) do
+		if name == def.name then
+			remove(tabs, i)
+		end
+	end
+end
+
 local function init_data(player, name)
 	local info = get_player_info(name)