Should ANSI escape codes be considered?

Hello!
Are ANSI escape codes supposed to be supported?
I was a bit surprise by this example, as you can see the rendered width is clearly 1 here, but `wcwidth` returns -1 (I would have expect 1 or more):

<img width="253" height="60" alt="Image" src="https://github.com/user-attachments/assets/59a5edf1-0d14-4310-9c16-aae11f19a9e2" />