Highlighting custom characters

[Jomy10]

Describe your feature request

It would be nice if we could add highlighting for certain characters in any file type (so they would be highlighted in every programming language).

Why would this be useful?
I accidentally type a non-breaking space a lot, and errors regarding this character could be easily prevented if there was a visual separation from non-breaking spaces and regular spaces.

[the-mikedavis]

Visible whitespace has been merged #1802 but isn't in the latest release yet. This follow-up PR added support for non-breaking space: #2322. With these you could configure rendering just for non-breaking space like so:

[editor.whitespace.render]
nbsp = "all"

[Jomy10]

Didn't find those while searching. Awesome to see this has already been updated.

I'll be waiting for the next release then.

[mandarvaze]

I have the latest release, but unable to use [editor.whitespace]
I opened issue #2614