Can’t use cache as a keyword argument for memoized function

[Socob]

For some reason I feel like I’ve seen this mentioned before, but can’t find it now (maybe I saw it in the code?). Anyway, using cache as a keyword argument for a memoized function doesn’t work as expected and should probably throw an error if that’s possible:

julia> using Memoization

julia> @memoize f1(x; cache=(; abc="xyz")) = println("$x, $cache")
f (generic function with 1 method)

julia> f1(111)
111, IdDict{Any, Any}()

julia> f1(111; cache=(; abc="xyz"))

julia> @memoize f2(x; cache) = println("$x, $cache")
f2 (generic function with 1 method)

julia> f2(111, cache=(; abc="xyz"))
111, IdDict{Any, Any}()

julia> g(x; cache=(; abc="xyz")) = println("$x, $cache")
g (generic function with 1 method)

julia> g(111)
111, (abc = "xyz",)

If it’s not possible to detect this and throw an error for some reason, it should at least be documented.