Fixed the behavior of backspace key when using search_key=None #104

	name: pre-commit checks
	on: [push, pull_request]
	jobs:
	pre-commit:
	runs-on: ubuntu-latest
	container: python:3
	steps:
	- name: Check out repository code
	uses: actions/checkout@v2
	- name: Install pre-commit
	run: \|
	pip install "virtualenv<v20.24.6" && # temporary fix for gitlint
	pip install "pre-commit==3.5.0"
	- name: Run pre-commit checks
	run: \|
	TMP_MSG_FILE="$(mktemp)" &&
	git log -1 --pretty=%B > "${TMP_MSG_FILE}" &&
	pre-commit run \
	--all-files \
	--color=always \
	--show-diff-on-failure \
	--hook-stage commit &&
	pre-commit run \
	--all-files \
	--color=always \
	--show-diff-on-failure \
	--hook-stage commit-msg \
	--commit-msg-filename "${TMP_MSG_FILE}" &&
	pre-commit run \
	--all-files \
	--color=always \
	--show-diff-on-failure \
	--hook-stage post-commit \|\|
	{
	>&2 echo "pre-commit checks failed. Please consider installing pre-commit";
	>&2 echo "hooks in your local Git clone by running \`make git-hooks-install\`.";
	exit 1;
	}

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