m5rcode – The Unofficial Polyglot Programming Language

m5rcode is an experimental polyglot programming language written with a blend of Python, JavaScript, PHP, C#, and C++.
It uses obfuscation and cross-language embedding to allow developers to write multi-language scripts in a single file (.m5r).
The project includes a custom REPL shell (m5rshell) and an interpreter for .m5r files.

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✨ Features

• Polyglot Language Core

  • Mix Python, JavaScript, PHP, CSS, C#, and C++ in a single .m5r file.
  • Interpreter extracts, executes, and blends code blocks.
  • Supports obfuscation for added challenge and uniqueness.

• m5rshell – The REPL Shell

  • Interactive REPL for testing code snippets.
  • Commands:
    • new, nano, run, fastfetch, credits, exit, cd
  • Developer-friendly CLI for creating & running .m5r scripts.

• .m5r File Runner (Interpreter)

  • Executes .m5r polyglot files directly.
  • Efficient, multi-language-aware execution engine.
  • Provides fast output even for obfuscated code.

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🔧 Requirements

• Python 3.8+

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📦 Installation

Clone this repository:

git clone https://github.com/m4rcel-lol/m5rcode.git
cd m5rcode

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⚡ Quick Start

Run the REPL shell

python3 m5rshell.py

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📝 Example

Here’s a hello.m5r script that prints Hello world in all supported languages:

<?py
_ = ''.join([chr(c) for c in [72,101,108,108,111,32,119,111,114,108,100]])
print(_)
?>

<?js
(function(){
    var x=[72,101,108,108,111,32,119,111,114,108,100];
    var s='';
    for(var i of x){ s+=String.fromCharCode(i); }
    console.log(s);
})();
?>

<?php
${a}=array(72,101,108,108,111,32,119,111,114,108,100);
echo implode(array_map('chr',${a})) . "\n";
?>

<?css
body { color: #00ff00; background: black; }
?>

<?cs
Console.WriteLine(string.Join("", new int[] {72,101,108,108,111,32,119,111,114,108,100}.Select(c => (char)c)));
?>

<?cpp
int arr[] = {72,101,108,108,111,32,119,111,114,108,100};
for(int i = 0; i < 11; i++) std::cout << (char)arr[i];
std::cout << std::endl;
?>

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📂 Project Structure

m5rcode/
├─ m5rshell.py         # The REPL shell
├─ m5r_interpreter.py              # The .m5r polyglot interpreter
├─ files/           # Sample m5rcode scripts
├─ utils/               # Handling everything
├─ commands # Commands handling
├─ version.txt # Version of m5rcode showing on fastfetch command
├─ requirements.txt # Modules u need to install for m5rcode to work.
└─ README.md

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🤝 Contributing

Contributions are welcome!
If you want to add support for more languages, open an issue or PR.

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👥 Credits

• Creator: m5rcel
• Contributors: The m5rcode community

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📜 Where can I install m5rcode from?

You can install m5rcode from it's official website pythonjs.cfd hover over and copy paste to your browser.