Before I begin, huge thanks to MagmaMcFry and planetfall from this thread. (https://knucklecracker.com/forums/index.php?topic=14272.0) I've used both definitions and motivation from their thread to create this.
This is a package containing syntax highlighting and simple autocompletions for CRPL in ST3.
Sadly, I'm not including a direct attachment download, since I don't know enough about the package system to provide it well, but you should be able to clone/download the repo into your packages. However, I would suggest using Package Control, since it's much simpler.
Please report any issues via github issues or directly, I'd like to fix them but don't have enough experience or code samples to be able to find them.
Links:
https://packagecontrol.io/packages/Creeper%20Reverse%20Polish%20Language
https://github.com/KubeRoot/Sublime-CRPL
Images:
https://i.imgur.com/NL9gzxc.png
https://i.imgur.com/aeFeDie.png