Thanks. I would add that the Catholic Church views the canon issue for both Testaments settled since the African councils of Carthage and Hippo. The only thing that Trent did was to proclaim that solemnly in light of the controversies of the time.
Like most conciliar pronouncements, Trent repeated with greater clarity and in reference to the emerging Protestant doctrines, what the mind of the Church held to be true at all times since the issue was settled in practice, that is, as far as the Canons are concerned, since late 4c.
Spot on, Alex!