clear screen before redraw-display #1707

	name: CI

	on:
	push:
	branches: [ '*' ]
	pull_request:
	branches: [ '*' ]
	workflow_dispatch:

	jobs:
	build:
	runs-on: ubuntu-latest

	steps:
	- uses: actions/checkout@v3
	with:
	submodules: true
	- name: Install Roswell
	env:
	LISP: ${{ matrix.lisp }}
	run: \|
	curl -L https://raw.githubusercontent.com/roswell/roswell/v22.12.14.113/scripts/install-for-ci.sh \| sh
	- name: Run test
	run: \|
	set -ex

	# workaround for sbcl and log4cl combination problems
	mkdir ~/common-lisp
	cd ~/common-lisp
	git clone https://github.com/sharplispers/log4cl.git
	cd -

	ros config set dynamic-space-size 2048

	ros install lem-project/async-process lem
	ros install cxxxr/sblint fukamachi/rove

	export PATH=$HOME/.roswell/bin:$PATH

	sblint src/base/lem-base.asd
	sblint lem.asd
	sblint lib/lisp-syntax/lem-lisp-syntax.asd
	sblint modes/lisp-mode/lem-lisp-mode.asd

	if [ $(grep -r --include="*.lisp" 'lem::' \| wc -l) -ne 0 ]; then
	echo 'using `lem::` internal symbols'
	echo 'https://google.github.io/styleguide/lispguide.xml?showone=Packages#Packages'
	exit 1
	fi

	rove lem-tests.asd

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