Keyboard.current.onTextInput difference between shortcut or plain text

I am trying to convert our project to the new Input System but running into an issue.

In our project we got a custom made input field where we can use shortcuts (for example CTRL-c) and insert normal text. So I want to detect the difference between a normal c and CTRL-c.

I got the code working to detect CTRL-c with the following

 if (Keyboard.current.ctrlKey.wasPressedThisFrame && Keyboard.current.cKey.wasPressedThisFrame)
 {...}

but also the Keyboard.current.onTextInput is triggered with a hidden char.

But when I detected a shortcut I want to ignore the input from Keyboard.current.onTextInput. Is there any way to do this with the new input system?

In the previous input system I just got the Input.inputString in the else when there was no shortcut detected