Default semiring in compile and linear are different

Σ = Set{Label{String}}(["[a-z]", "⇪", "[A-Z]"]) 
Δ = Set{Label{Int}}(1:27) # 26 latin letters + 1 key "caps lock"
Ω = Set{Label{Char}}('a':'z')  Set{Label{Char}}('A':'Z')
	
meta = compile(
	    [
	        (src = 1, dest = 2, label = ("⇪",)),
	        (src = 2, dest = 1, label = ("⇪",)),
	        (src = 1, dest = 1, label = ("[a-z]",)),
			(src = 2, dest = 2, label = ("[A-Z]",))
	    ];
	    init = [1],
	    final = [1, 2],
	    symbols = Σ,
	)

uppercase = union([
		linear(["[A-Z]"], [i], [c]; symbols = (Σ, Δ, Ω)) 
		for (i, c) in zip(1:3, 'A':'C')
	]...)

info(meta)

info(uppercase)