Replace varstash with my own implementation for functions #147

	name: CI

	on:
	push:
	paths-ignore:
	- 'dockerfiles/**'
	- '.gitignore'
	- 'dev_tools.sh'
	- 'docker-compose.yml'
	- 'Makefile'
	- 'README.md'
	- 'test_all_in_ubuntu'
	pull_request:
	paths-ignore:
	- 'dockerfiles/**'
	- '.gitignore'
	- 'dev_tools.sh'
	- 'docker-compose.yml'
	- 'Makefile'
	- 'README.md'
	- 'test_all_in_ubuntu'

	permissions: 'read-all'

	defaults:
	run:
	shell: 'bash'
	working-directory: './'

	jobs:
	shellcheck:
	name: ShellCheck
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v4
	- name: Install prerequisites
	run: \|
	sudo apt-get update -y
	sudo apt-get install -y --no-install-recommends shellcheck
	- name: Run ShellCheck
	run: \|
	shellcheck --version
	bin/shellcheck

	test-macos:
	name: MacOS Test
	strategy:
	matrix:
	os: ['macos-12', 'macos-13', 'macos-14']

	runs-on: ${{ matrix.os }}

	steps:
	- uses: actions/checkout@v4

	- name: Install prerequisites
	run: brew install coreutils bash

	- name: Run tests on ${{ matrix.os }}
	run: \|
	zsh --version
	bash --version
	script time make test

	test-linux:
	name: Linux Test
	strategy:
	matrix:
	os: ['ubuntu-20.04', 'ubuntu-22.04']

	runs-on: ${{ matrix.os }}

	steps:
	- uses: actions/checkout@v4

	- name: Install prerequisites
	run: \|
	sudo apt-get update -y
	sudo apt-get install -y --no-install-recommends zsh

	- name: Run tests on ${{ matrix.os }}
	run: \|
	zsh --version
	bash --version
	script time make test

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