[snowstormsun]

Thanks, but this reference doesn't exactly answer the original question.

> Will my private code be shared with other users? > No. We follow responsible practices in accordance with our Privacy Statement to ensure that your code snippets will not be used as suggested code for other users of GitHub Copilot.

That just says they prevent snippets from being "suggested" to users of copilot, but not that snippets (from private repos) are not used to train copilot. It could also be they use private repos for training, but have some mechanism to make sure the output for the user is not too close to the original private code. Limiting the scope to "suggested code" here bypasses any information about if it's used for training or not.