I am Japanese.

In Japan, there are confusing numbers like “１２３”. It's called a full-width digit.

It is a number that is invalid in calculations. So I think we need a way to identify a correct number and not.

I have solved this problem by creating a web extension. But it would be nice if Scratch had such a feature.

You cannot share the browser extension since there is a policy against it, but this may need to be kept in mind.

Sorry, I forgot about it. Deleted.

Image instead of the link