[vasilakisfil]

squashing commits make history important actually. The history how you reached the solution in your branch is not important, I am not interested in a wip commit which could indeed have a valid commit message, but still not final. Only the committed is interested into that.

So I think just before merging squashing the commits makes completely sense. Before that the committer is free to do whatever he/she likes.

Of course in the case the diff of files is so big that make multiple commits sensible, means that the PR is not broken correctly. Then, it's fine to have multiple commits, but the problem is elsewhere not in squashing them.