fix: correct tab rendering and cursor positioning #292

	name: CI
	on:
	pull_request:
	push:
	branches: [ master ]

	jobs:
	build-linux-gcc:
	runs-on: ubuntu-22.04
	steps:
	- uses: actions/checkout@v1
	- name: install dependencies
	run: \|
	sudo apt-get update
	sudo apt-get install -qq libsdl2-dev libglew-dev
	- name: build ded
	run: \|
	./build.sh
	env:
	CC: gcc
	build-linux-clang:
	runs-on: ubuntu-22.04
	steps:
	- uses: actions/checkout@v1
	- name: install dependencies
	run: \|
	sudo apt-get update
	sudo apt-get install -qq libsdl2-dev libglew-dev
	- name: build ded
	run: \|
	./build.sh
	env:
	CC: clang
	build-macos:
	runs-on: macOS-latest
	steps:
	- uses: actions/checkout@v1
	- name: install dependencies
	run: brew install sdl2 pkg-config glew
	- name: build ded
	run: \|
	./build.sh
	env:
	CC: clang
	# TODO(#29): build-windows-msvc is broken
	# ---
	# build-windows-msvc:
	# runs-on: windows-2019
	# steps:
	# - uses: actions/checkout@v1
	# # this runs vcvarsall for us, so we get the MSVC toolchain in PATH.
	# - uses: seanmiddleditch/gha-setup-vsdevenv@master
	# - name: Install dependencies
	# run: \|
	# ./setup_dependencies.bat
	# - name: build ded
	# shell: cmd
	# run: \|
	# ./build_msvc.bat
	# - name: Prepare WindowsBinaries artifacts
	# shell: cmd
	# run: \|
	# mkdir winbin
	# copy /B *.exe winbin
	# copy /B *.png winbin
	# - name: Upload WindowsBinaries artifacts
	# uses: actions/upload-artifact@v2
	# with:
	# name: WindowsBinaries
	# path: ./winbin/

Provide feedback