Civil War if Boromir survived?

[Tuor of Gondolin]

In The Dunedain thread there was a question about what would have happened if Boromir survived as ruling Steward.

There is a possible scenario for this. Boromir is severely wounded defending Merry and Pippin. The hobbits are carried away and about a dozen orcs are left with orders to finish Boromir off. As they're about to do so A and G and L arrive. Boromir tells them to save the hobbits and, being a macho guy, staggers back to Minas Tirith. He recuperates just as the war ends. He is conflicted about trying to take the Ring and wanting the Stewardship and Denethor's approval. What does he do? What happens? Boromir would be at least as popular as his brother with the people, Faramir, Imrahil and the Rohirrim might be reluctant to intervene. On the other hand Aragorn got the allegiance of the Army of the Dead, saved South Gondor and led the Army of the West against Mordor.

P.S. Is there some way I can get more print across the lines. I keep getting a
lot of varying long and short lines when messages are posted.