/plugins/non-ja-slug/

+ non-ja-slug.php
+ readme.txt

// non-ja-slug.php

<?php
/**
 * @package non-ja-slug
 */
/*
/*
Plugin Name: パーマリンク日本語防止プラグイン
Plugin URI: http://example.com/
Description: タイトルに日本語が含まれる場合、スラッグを半角英数のみに自動変換します。
Version: 1.0
Author: unknown coder and hcc_dtp
Author URI: http://example.com/
License: Unlicense
Text Domain: non-ja-slug
*/
add_filter('sanitize_title','sanitize_title_numalpha_only',9);
function sanitize_title_numalpha_only($title) {
return preg_replace('/[^%a-zA-Z0-9 \(\)_-]/', '-', $title);
}
?>

// readme.txt

=== パーマリンク日本語防止プラグイン ===
Contributors: unknown coder, hcc_dtp
Tags: permalink,permanent link,slug
Requires at least: 6.0
Tested up to: 6.1
Stable tag: 1.0
License: Unlicense
License URI: http://example.com/
Requires PHP: 5.4 or later
Donate link:

== Description ==
記事タイトルに日本語が含まれる場合、保存時にスラッグを半角英数のみに自動変換します。

= Features =

== Installation ==

1. Upload 'plugin-notes-label' folder to the `/wp-content/plugins/` directory.
2. Activate the plugin through the 'Plugins' menu in WordPress.
3. If you have any problems - please ask for support.

== Frequently Asked Questions ==

== Screenshots ==

== Changelog ==
= 1.0 =
	2022.09.22
	* Initial release

== Upgrade Notice ==