What is the difference between a local function and a normal function?

[Autterfly]

@XAXA

local function foo()
    print("Foo.")
end

is exactly the same as

local foo = function()
    print("Foo.")
end

These two specifically are not exactly the same; they have a tiny difference in their scopes. Within the one defined as local function, foo (its name) can be accessed as an upvalue for recursion, while in the local foo = definition, it can not.