Stripping ellipsis

[LecrisUT]

Context

Consider the following snippet:

```python
extensions = [
    ...
    "sphinx.ext.intersphinx",
]
```

It would be nice to have the copy button strip out the elipsis there, but it is not clear how that can be done

Proposal

Probably the solution would be using: copybutton_exclude, but is there a pygments directive for that?

Tasks and updates

No response

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