This means that comments like `//copybara:media3-only` are now detected (no space between `//` and `copybara`) which will ensure that lines like this are correctly transformed for the media3 and exoplayer2 GitHub repos: https://github.com/google/ExoPlayer/blob/aa4e0080147fe76a6c0cca40b7eccdf45eb58028/library/effect/build.gradle#L33 PiperOrigin-RevId: 527919649
