alt Hacker NewsI don't think there's much nuance in the "I don't know --first-parent exists" workflow. Yes, you may sometimes squash-merge a contribution coming from someone who can't use git well when you realize that it will just be simpler for everyone to do that than to demand them to clean their stuff up, but that's pretty much the only time you actually have a good reason to do that.
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Do people actually share PR as in different people contributing to the same branch?
Also I can understand not squashing if the contribution comes from outside the organization. But in that case, I would expect a cleaned up history. But if every contribution is from members of the team, who can merge their own PR, squash merge is an easy way to get a clean history. Especially when most PR should be a single commit.
I really, really wish git changed two defaults:
If you use a workflow that always merges a PR with a merge commit, then git log --first-parent gives you a very nice linear history. I feel like if this was the default, so many arguments about squashing or rebasing workflows wouldn't be necessary to get our "linear history", everyone would just be doing merges and be happy with it. You get a clean top level history and you can dig down into the individual commits in a merge if you are bisecting for a bug.