git-rebase-all-branches

#!/bin/sh

# Check if a rebase is already in progress
if [ -d .git/rebase-merge ] || [ -d .git/rebase-apply ]; then
    echo "Rebase in progress detected. Continuing rebase..."
    if ! GIT_EDITOR=true git rebase --continue; then
        echo "Failed to continue rebase. Please resolve conflicts and run this script again."
        exit 1
    fi
fi

# maybe the whole logic about default_rebase_target can be replaced by '@',
# see https://stackoverflow.com/a/66153331/22022448
#if git branch -a | grep -q 'gerrit/\(master\|main\)'; then
#    default_rebase_target=gerrit
#else
#    default_rebase_target=origin
#fi
#git symbolic-ref refs/remotes/$default_rebase_target/HEAD >/dev/null 2>&1 || git remote set-head origin --auto
#rebase_target="${rebase_target:-${1:-"$(git symbolic-ref refs/remotes/$default_rebase_target/HEAD | sed "s@^refs/remotes/default_rebase_target/@@")"}}"
rebase_target=${rebase_target:-$(git branch -a | grep 'origin/\(master\|main\)' | tail -n1)}

for i in $(git branch-raw | grep -v no_rebase) ; do
    # Skip branches already up to date with rebase target
    #shellcheck disable=SC2086
    if git merge-base --is-ancestor $rebase_target "$i" 2>/dev/null; then
        echo "Skipping $i (already up to date)"
        continue
    fi
    #shellcheck disable=SC2086 disable=SC2015
    git checkout "$i" && git rebase --rerere-autoupdate $rebase_target || break
done