Add send/receive return value documentation #4691

	name: Compliance Checks

	on:
	push:
	branches:
	- main
	pull_request:
	branches:
	- main
	workflow_dispatch:

	jobs:
	markdown-style-check:
	name: Markdown Style Check
	runs-on: ubuntu-latest
	steps:
	- name: Checkout
	uses: actions/checkout@v4
	- name: Check
	# Reject any .md files with tabs in them
	run: \|
	if grep -rn " " * --include=*.md;
	then exit 1
	fi

	uncrustify:
	name: Style Compliance
	runs-on: ubuntu-latest
	steps:
	- name: Install uncrustify
	run: \|
	sudo apt update
	sudo apt install --no-install-recommends -y uncrustify
	- name: Checkout
	uses: actions/checkout@v4
	- name: Check
	# Run an uncrustify check. If the check indicates problems, then apply the fixes and show the diff.
	run: \|
	set +e
	./script/format_nix.sh --check
	if [ $? -ne 0 ]; then
	set -e
	./script/format_nix.sh
	git diff
	exit 1
	fi

	file-encoding:
	name: File Encoding Check
	runs-on: ubuntu-latest
	steps:
	- name: Checkout
	uses: actions/checkout@v4
	- name: Check
	run: \|
	set +e
	./script/check_encode.sh
	if [ $? -ne 0 ]; then
	exit 1
	fi

	copyright-date:
	name: Check Copyright Year
	runs-on: ubuntu-latest
	steps:
	- name: Checkout
	uses: actions/checkout@v4
	- name: Check
	run: \|
	set +e
	./script/check_copyright_date.sh
	if [ $? -ne 0 ]; then
	exit 1
	fi

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