It is a problem in mailing lists but GitHub has good tooling around it. Every ti...

matheusmoreira · on Feb 19, 2020

> Every time you force-push, GitHub keeps and provides direct links to the old commit, the new commit and the diff between the two commits.

Not in my experience. Here's one of my pull requests:

https://github.com/mchehab/zbar/pull/64

The maintainer reviewed some of the changes and I revised my commits as a result. The review is correctly marked as outdated. Clicking on the file name tells me the commit cannot be found.

> We went looking everywhere, but couldn’t find those commits.

> Sometimes commits can disappear after a force-push. Head back to the latest changes here.

chenhan · on Feb 19, 2020

Your pull request shows exactly what I am talking about. For every force-push it has direct links to the old commit, the new commit and the diff.

Pick the first force push in your PR. It says

> matheusmoreira force-pushed the matheusmoreira:binary-decoding branch from aec04b3 to 87a0b3c on 5 Nov 2019

Click on 'force-pushed'. That's the diff of force-push.

Click on 'aec04b3'. That's the commit before force-push.

Click on '87a0b3c'. That's the new commit in the force-push.

matheusmoreira · on Feb 19, 2020

You're right. I never realized those messages contained links. They do lead me to the old commits.

I don't understand why the code review can't find the commit though.

u801e · on Feb 19, 2020

> For every force-push it has direct links to the old commit, the new commit and the diff.

It's there a way to see the diff between commits that are/were not at the HEAD of the branch? That is, doing something like:

  git diff aec04b3^.. 87a0b3c^