[l72]

If your goal here is to have linear history, then just use a merge commit when merging the PR to main and always use `git log --first-parent`. That will only show commits directly on main, and gives you a clean, linear history.

If you want to dig down into the subcommits from a merge, then you still can. This is useful if you are going back and bisecting to find a bug, as those individual commits may hold value.

You can also cherry pick or rollback the single merge commit, as it holds everything under it as a single unit.

This avoids changing history, and importantly, allows stacked PRs to exist cleanly.

[mcpherrinm]

Git bisect is one of the important reasons IMO to always squash-merge pull requests: Because the unit of review is the pull request.

I think this is all Github's fault, in the end, but I think we need to get Github to change and until then will keep using squash-merges.

[juped]

No.

The cases where bisect fails you are, basically, ones where it lands on a merge that does too much - you now have to manually disentangle the side that did too much to find out exactly what interaction caused the regression. But this is on the rarer side because it's rare for an interaction to be what caused the regression, it's more common that it's a change - which will be in a non-merge commit.

The squash merge workflow means every single commit is a merge that does too much. Bisect can't find anything useful for you by bisection anymore, so you have to get lucky about how much the merge did, unenriched by any of the history that you deleted.

[olejorgenb]

git bisect --first-parent