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path: root/shellrc.d/git
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# vim: ft=sh:

# Get path to worktree for git branch
_gitbworktree() {
	git worktree list --porcelain | \
		awk -v ref="refs/heads/$1" \
			'/^worktree / { worktree = $2 }; /^branch / { if ($2 == ref) { print worktree }}'
}

# Automatic branch merger (merge branch, push it to server and remove branch)
# Expects name of the branch as argument
# It fails if it's not fast forward merge and if there is fixup! commit.
gitbmerge() (
		set -e
		if [ -n "$(git log --grep="^fixup\!" HEAD.."$1")" ]; then
			echo "First squash fixups!"
			exit 1
		fi
		local wt
		wt="$(_gitbworktree "$1")"
		if [ -n "$wt" ]; then
			rm -r "$wt"
			git worktree prune
		fi
		git merge --ff-only "$1" && git push && git branch -d "$1" && git push origin :"$1"
)

# Checkout branch to new work tree
gitbcheckout() {
	local nw
	nw="$(git rev-parse --show-toplevel)-$1"
	git worktree add "$nw" "$1"
	cd "$nw"
	git submodule update --no-fetch --init --recursive
}
alias gitbco='gitbcheckout'

# Create new branch from HEAD
gitbnew() {
	git branch "$1" HEAD
	gitbcheckout "$1"
}