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#!/bin/bash

set -e

if [ -z "$*" ] ; then
	echo "Usage: $0 [commit [commit ..]]"
	exit 1
fi


curbranch=$(git rev-parse --abbrev-ref HEAD)

# assert we got a branch
[ -n "$curbranch" ]

if [ $curbranch = HEAD ] ; then
	echo "You are not currently on a branch, cannot cherry-pick"
	exit 1
fi

case $curbranch in
	patch-queue/*)
		debbranch=${curbranch/patch-queue\/}
		pqbranch=$curbranch
		;;
	*)
		debbranch=$curbranch
		pqbranch=patch-queue/$curbranch
		;;
esac

commits=$(git rev-parse "$@")

if git rev-parse $pqbranch &>/dev/null ; then
	echo
	echo "Will recreate patch-queue branch $pqbranch"
	echo "It was pointing to" $(git rev-parse $pqbranch)
	echo
fi

gbp pq import --force

echo "Cherry-picking the following commits:"
echo "$commits"

picks=$(echo "$commits" | xargs echo exec git cherry-pick -x --no-edit --commit)

# find the first debian commit
firstdebian=$(git log -i --grep "topic.*debian" --pretty=%h --reverse $debbranch..$pqbranch | head -1)

sedexpr="/$firstdebian/i$picks"

GIT_EDITOR="sed -i -e '$sedexpr'" git rebase --interactive --no-autosquash $debbranch