The interpretation timeline
Psalm 79:11 Douay-Rheims

The shadow of it covered the hills: and the branches thereof the cedars of God.

A.D. 430 – 1863 4 witnesses

Patristic

before A.D. 750
430
A.D.
Augustine of Hippo Patristic
A.D. 354–430
“"A way You have made in the sight of her, and hast planted the roots of her, and she has filled the land" [Psalm 80:9]. Would she have filled the land, unless a way had been made in the sight of her? What was the way which was made in the sight of her? "I am," He says, "the Way, the Truth, and the Life." [John 14:6] With reason she has filled the land. That has now been said of this vineyard, which has been accomplished at the last. But in the mean time what? "She has covered the mountains with her shadow, and with her branch the cedars of God" [Psalm 80:10]. "You have stretched out her boughs even unto the sea, and even unto the river her shoots" [Psalm 80:11]. This requires the office of an expositor, that of a reader and praiser does not suffice: aid me with attention; for the mention of this vineyard in this Psalm is wont to overcloud with darkness the inattentive....But nevertheless the first Jewish nation was this vine. But the Jewish nation reigned as far as the sea and as far as the river. As far as the sea; it appears in Scripture [Numbers 34:5] that the sea was in the vicinity thereof. And as far as the river Jordan. For on the other side of Jordan some part of the Jews was established, but within Jordan was the whole nation. Therefore, "even unto the sea and even unto the river," is the kingdom of the Jews, the kingdom of Israel: but not "from sea even unto sea, and from the river even unto the ends of the round world;" this is the future perfection of the vineyard, concerning which in this place he has foretold. When, I say, he had foretold to you the perfection, he returns to the beginning, out of which the perfection was made. Of the beginning will you hear? "Even unto the river." Of the end will you hear? "He shall have dominion from sea even unto sea:" that is, "she has filled the earth." Let us look then to the testimony of Asaph, as to what was done to the first vineyard, and what must be expected for the second vineyard, nay to the same vineyard....What then, the vineyard before the sight whereof a way was made, that she should fill the earth, at first was where? "Her shadow covered the mountains." Who are the mountains? The Prophets. Why did her shadow cover them? Because darkly they spoke the things which were foretold as to come. You hear from the Prophets, Keep the Sabbath day, on the eighth day circumcise a child, offer sacrifice of ram, of calf, of he-goat. Be not troubled, her shadow does cover the mountains of God; there will come after the shadow a manifestation. "And her shrubs the cedars of God," that is, she has covered the cedars of God; very lofty, but of God. For the cedars are types of the proud, that must needs be overthrown. The "cedars of Lebanon," the heights of the world, this vineyard did cover in growing, and the mountains of God, all the holy Prophets and Patriarchs.”
Source

Scholastic

c. 1100 – 1500
1105
A.D.
Rashi Jewish
1040–1105
“and its branches were great cedars Heb. ארזי אל, like strong cedars, i.e., mighty kings.”

Post-Reformation

c. 1650 – 1900
1771
A.D.
John Gill Reformed
1697–1771
“Why hast thou then broken down her hedges,.... After having done all this for her; which signifies the Lord's removing his presence, power, and protection, from Israel; which were the hedge he set about them, and by which they were secured and defended from their enemies; but these being gone, they became an easy prey to them; see Job 1:10, the hedge about the church and people of God are the angels that encamp about them; salvation, which is as walls and bulwarks to them; and the Lord himself, who is a wall of fire around them; which may be said to be broken down when he withdraws his presence, and does not exert his power in the protection of them; but suffers them to be exposed to the persecutions of men: so that all they which pass by the way do pluck her? the hedge being broken down, all passengers and travellers plucked the fruit of the vine as they passed along, there being noticing to keep them off from it: this may denote the plunder of the Israelites by their enemies, when left of God, they fell into their hands; and the havoc persecutors make of the church of Christ, and their spoiling them of their goods and substance, when they are permitted to do it.”
Source
1863
A.D.
1796–1863
“P. " Goodly cedars." As we have already remarked, the Hebrews denote excellence by the epithet”
Modern · 1953 →

The in-app commentary runs from the Fathers to the early-modern record, then stops — that's where the public-domain sources end, not where the reading does. For the modern reading, follow the sources directly.