Merge pull request #17 from tomii9273/add_nukeari_8and1 #8

	name: Check Math Formula

	on:
	push:
	branches:
	- main

	jobs:
	check-math-formula:
	runs-on: ubuntu-latest
	timeout-minutes: 1
	steps:
	- uses: actions/checkout@v3
	- name: Check
	run: \|
	n_valid=0
	for str in '^\$' '\$$' '$\$' '\$$' ' \$' '\$ '
	do
	# grep はヒットしなかった場合に終了ステータスが 1 になり、GitHub Actions がエラーで止まってしまうため、先に sed でヒットするかを確認している
	exist=$(sed -n -E -e "/${str}/p" src/README.md)
	if [ -n "$exist" ]; then
	n_tmp=$(grep -o -E "${str}" src/README.md \| wc -l)
	n_valid=$((n_valid+n_tmp))
	fi
	echo "now n_valid: $n_valid"
	done
	echo "final n_valid: $n_valid"

	n_all=$(grep -o '\$' src/README.md \| wc -l)
	echo "final n_all: $n_all"

	if [ $n_all -ne $n_valid ]; then
	echo "Error: Invalid math formula found."
	exit 1
	fi
	echo "Success: All math formulas are valid."

	shell: bash

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