docs(grammar): add missing null grammar (#153) #613

	name: CI

	on:
	push:
	branches:
	- master
	pull_request:
	branches:
	- master

	permissions:
	contents: read

	env:
	CARGO_TERM_COLOR: always

	jobs:
	check:
	runs-on: ${{ matrix.os }}
	strategy:
	fail-fast: false
	matrix:
	os:
	- ubuntu-latest
	- windows-latest
	- macos-latest
	steps:
	# The Windows runners have autocrlf enabled by default.
	- name: Disable git autocrlf
	run: git config --global core.autocrlf false
	if: matrix.os == 'windows-latest'
	- name: Checkout
	uses: actions/checkout@v5
	# https://github.com/actions/cache/blob/main/examples.md#rust---cargo
	# Depends on `Cargo.lock` --> Has to be after checkout.
	- uses: actions/cache@v4
	with:
	path: \|
	~/.cargo/bin/
	~/.cargo/registry/index/
	~/.cargo/registry/cache/
	~/.cargo/git/db/
	target/
	key: ${{ runner.os }}-cargo-${{ hashFiles('**/Cargo.lock') }}
	- name: Install Rust
	run: \|
	rustup toolchain install nightly --no-self-update --profile minimal --component rust-src,rustfmt,clippy
	rustup target add wasm32-unknown-unknown
	- name: Check formatting
	run: cargo fmt --all -- --check
	- name: Run tests
	run: cargo test --all-features --all-targets
	- name: Run clippy
	run: cargo clippy --all-features --all-targets -- --no-deps --deny warnings
	- name: Check wasm
	run: \|
	cargo check --target wasm32-unknown-unknown --lib
	cargo clippy --target wasm32-unknown-unknown --lib -- --no-deps --deny warnings

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