Change input before interpreter

I want to manipulate user input before it is parsed for intents. I expect the users to be lazy and keep special characters in their inputs. Whenever a user has the slash “/” character as the first character of their input, it recognize the entire message as an intent that hasn’t been specified in the domain.

I need to manipulate the expression a little bit before rasa does an intent/entity extraction. I tried a custom component but that not working.

A custom component is the right place to include this. Can you post your code and as much of the output as possible so we can help see why it isn’t working?

I’m sorry, it been 5 days and I accepted this as rasa’s limitation after research. If you have a github link or example I would love to refactor my code and try it but I’ve moved on from debugging this.