Fix description of add_defun() in BUGS section #44

	name: test-on-gnu-linux
	on:
	push:
	branches: [ master ]
	pull_request:
	branches: [ master ]
	jobs:
	make-test:
	runs-on: ${{ matrix.os }}
	env:
	TERM: xterm-256color

	strategy:
	#fail-fast: false
	matrix:
	# https://docs.github.com/en/actions/reference/specifications-for-github-hosted-runners
	os: [ubuntu-latest]
	# https://hub.docker.com/_/perl
	perl-version: ['latest', '5.30', '5.26', '5.14'] # '5.8.9', '5.10', and '5.12' failed 2020/02/28

	container:
	image: perl:${{ matrix.perl-version }}

	name: Build on ${{ matrix.os }} with Perl ${{ matrix.perl-version }}
	steps:
	- uses: actions/checkout@v2
	- name: Install prerequisites
	run: \|
	perl -V
	apt install -y libreadline-dev
	- name: Run make test
	run: \|
	perl Makefile.PL
	make
	make test

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