src/imagewmark.py: document and enforce --cornersync={on|off|auto} op… #25

	# This Source Code Form is licensed MPL-2.0: http://mozilla.org/MPL/2.0

	# Linting: xclip -sel c <.github/workflows/ci-builds.yml # https://rhysd.github.io/actionlint/

	on:
	push:
	branches: ['trunk', 'wip/**']
	tags: [ 'v[0-9]+.[0-9]+.[0-9]+*' ]
	pull_request:
	branches: ['trunk', 'wip/**'] # Only run PRs targeting these branches

	jobs:

	Alpine-CI:
	runs-on: ubuntu-latest
	container: { image: 'ghcr.io/tim-janik/imagewmark-ci:alpine-latest', options: --user runner }
	steps:
	- { uses: actions/[email protected], with: { fetch-depth: 0, submodules: recursive } }
	- run: git fetch -f --tags # Fix actions/checkout#290
	- run: \|
	src/version.sh
	git describe --always --long
	- run: make -j`nproc`
	- run: \|
	make -j`nproc` check
	- run: \|
	make PREFIX=$HOME install
	make PREFIX=$HOME installcheck
	make PREFIX=$HOME uninstall
	- run: \|
	make PREFIX=$HOME distcheck
	- { uses: actions/upload-artifact@v4, with: { name: imagewmark-snapshot, path: 'imagewmark-*.tar.zst' } }

	Ping-IRC:
	if: always() # github.event_name != 'pull_request'
	needs: [Alpine-CI]
	runs-on: ubuntu-latest
	steps:
	- { uses: actions/[email protected], with: { fetch-depth: 0 } }
	- run: git fetch -f --tags # Fix actions/checkout#290
	- name: Check-Jobs
	run: \|
	echo 'Alpine-CI:${{ needs.Alpine-CI.result }}'
	[[ ${{ needs.Alpine-CI.result }} =~ success\|skipped ]]
	- name: Ping-IRC
	if: ${{ always() && !env.ACT }}
	run: \|
	.github/workflows/ircbot.py -q -j "#Anklang" -G -S '${{ job.status }}' "$(git log -1 --format=%s)"

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