Redirect catch all that can ignore requests with a file extension

Is it possible to have a redirect rule that ignores paths that have a file extension? For example if I have a catch all like this:

[[redirects]]
  from = "/*"
  to = "/"
  status = 200

Is there a way to use a condition that ignores things like https://mysite.com/index.html ?

Not at present - our redirects pattern matching is only positive, not negative, and it isn’t a full regex.

Could you tell us more about your goal, so we can maybe help you find a different way to accomplish it?