Git Squash by author - All author commits into a single commit

Question

I am trying squash many commits into a single one, the problem is that I need do that by author (name or email).

The case:

Lets say I have a branch called fe

Answer 1

With Kenkron's caveats in mind, you could do a:

SORTED_GIT_LOGS=$(git log --pretty="format:%an %H" master..feature_a | sort -g | cut -d' ' -f2); \
IFS=$(echo -en "\n\b"); for LOG in $SORTED_GIT_LOGS; do \
    git cherry-pick $LOG; \
done | less

The git log --pretty="format:%an %H" master..feature_a | sort -g would sort the logs of the feature_a commits (not the ones from master because of the master..feature_a syntax)

You would still need to do an interactive rebase to squash the (now ordered by author) commits on master.