From fd9c3306cd82c67b7e7264199c71597348ff08a8 Mon Sep 17 00:00:00 2001
From: Igor Lobanov <bniwredyc@gmail.com>
Date: Mon, 2 Dec 2024 22:35:46 +0100
Subject: [PATCH] better md files check

---
 check-md-files.js | 19 ++++++++++++++++---
 1 file changed, 16 insertions(+), 3 deletions(-)

diff --git a/check-md-files.js b/check-md-files.js
index b378816..8b97ed6 100644
--- a/check-md-files.js
+++ b/check-md-files.js
@@ -3,6 +3,20 @@ const path = require('path');
 
 let errorFound = false;
 
+const prohibitedAmpRegex = /&(?!amp;|lt;|gt;|quot;|apos;)/;
+
+function checkLine(line) {
+    if (line.includes('<')) {
+        return false;
+    }
+
+    if (line.includes('>')) {
+        return false;
+    }
+
+    return !prohibitedAmpRegex.test(line);
+}
+
 function checkFiles(dir) {
     const files = fs.readdirSync(dir);
 
@@ -22,9 +36,8 @@ function checkFiles(dir) {
 
             const lines = content.split('\n');
             lines.forEach((line, index) => {
-                // Check for forbidden characters '<' or '>'
-                if (line.includes('<') || line.includes('>')) {
-                    console.error(`Error in ${filePath}:${index + 1}: Forbidden character '<' or '>' found.`);
+                if (!checkLine(line)) {
+                    console.error(`Error in ${filePath}:${index + 1}`);
                     errorFound = true;
                 }
             });