Refactor/allow any language (#2061)

* Update allowanylanguage.js

Script was not working when testing in PDI.
With help of AI wrote a script that has the same purpose, has a logical order, is well commented, and works (validated this on my PDI).

* Update README.md

Expanded the readme, to describe the refactored code, while I kept the original Elon joke.

Author: WillemZeiler

Specialized Areas/Regular Expressions/AllowAnyLanguage/README.md

@@ -1 +1,57 @@
-Allow Any Language Character Remove Special Characters, Can be used to verify valid names. Sorry Elon Musk's First born.
+# trimNonCharacters
+
+## Description
+
+This JavaScript function removes special characters from strings while preserving valid characters from multiple language groups.
+
+Useful for validating names or user input in internationalized applications.
+
+> Sorry, Elon Musk's firstborn — `X Æ A-12` might not make it through unscathed.
+
+## Features
+
+- Removes punctuation, emojis, and symbols
+- Preserves:
+  - Basic Latin letters (A–Z, a–z)
+  - Digits (0–9)
+  - Whitespace and parentheses
+  - Accented characters (e.g., é, ñ, ü)
+  - Characters from:
+    - Central/Eastern European languages
+    - Cyrillic (Russian, Ukrainian)
+    - Greek
+    - Arabic
+    - Hindi/Sanskrit (Devanagari)
+    - Chinese, Japanese, Korean (CJK ideographs)
+
+## Compatibility
+
+- Fully compatible with **ServiceNow background scripts**
+- Avoids unsupported features like:
+  - Unicode property escapes (`\p{L}`)
+  - Multi-line regex literals
+  - Inline comments inside regex
+
+## Usage
+
+Change the input string to your own text/variable, call the function with the input, handle the result:
+```
+var input = "Hello, мир! Γειά σου κόσμε! مرحبا بالعالم! नमस्ते दुनिया! 你好，世界！";
+var cleaned = trimNonCharacters(input);
+gs.info("Cleaned: " + cleaned);
+```
+## Customization
+Language support is modular. Unicode ranges are defined in an array and can be commented out or modified as needed:
+```
+var allowedRanges = [
+  "a-zA-Z0-9()",     // Basic Latin
+  "\\s",             // Whitespace
+  "\\u00C0-\\u00FF", // Western European
+  "\\u0100-\\u017F", // Central/Eastern European
+  "\\u0400-\\u04FF", // Cyrillic
+  "\\u0370-\\u03FF", // Greek
+  "\\u0600-\\u06FF", // Arabic
+  "\\u0900-\\u097F", // Hindi/Sanskrit
+  "\\u4E00-\\u9FFF"  // Chinese, Japanese, Korean
+];
+```

Specialized Areas/Regular Expressions/AllowAnyLanguage/allowanylanguage.js

@@ -1 +1,51 @@
-module.exports.trimNonCharacters = (str) => str.replace(/[^\p{L}\d()\s]+/ug, '');
+function trimNonCharacters(str) {
+  // Define Unicode ranges for each language group
+  var allowedRanges = [
+    "a-zA-Z0-9()",     // Basic Latin letters, digits, parentheses
+    "\\s",             // Whitespace
+
+    // Western European (Latin-1 Supplement)
+    "\\u00C0-\\u00FF", // e.g., é, ñ, ü
+
+    // Central/Eastern European (Latin Extended-A)
+    "\\u0100-\\u017F", // e.g., Ą, Č, Ő
+
+    // Cyrillic (Russian, Ukrainian, Bulgarian)
+    "\\u0400-\\u04FF", // e.g., мир, привет
+
+    // Greek
+    "\\u0370-\\u03FF", // e.g., Γειά σου κόσμε
+
+    // Arabic
+    "\\u0600-\\u06FF", // e.g., مرحبا بالعالم
+
+    // Devanagari (Hindi, Sanskrit)
+    "\\u0900-\\u097F", // e.g., नमस्ते दुनिया
+
+    // CJK Unified Ideographs (Chinese, Japanese Kanji, Korean Hanja)
+    "\\u4E00-\\u9FFF"  // e.g., 你好，世界
+  ];
+
+  // Build the regex pattern string
+  var pattern = "[^" + allowedRanges.join("") + "]+";
+
+  // Create the RegExp object
+  var regex = new RegExp(pattern, "g");
+
+  // Apply the regex to clean the string
+  return str.replace(regex, '');
+}
+
+// Example input with comments for each language
+var input = 
+  "Hello, " +                  // English: "Hello, "
+  "мир! " +                    // Russian: "world!"
+  "Γειά σου κόσμε! " +        // Greek: "Hello world!"
+  "مرحبا بالعالم! " +         // Arabic: "Hello world!"
+  "नमस्ते दुनिया! " +         // Hindi: "Hello world!"
+  "你好，世界！";               // Chinese: "Hello, world!"
+
+var cleaned = trimNonCharacters(input);
+
+gs.info("Original: " + input);
+gs.info("Cleaned: " + cleaned);