Make Core Text Renderer Accessible in VoiceOver

Is your feature request about something that is currently impossible or hard to do? Please describe the problem.

Under the Advanced menu in settings for the checkbox Use Core Text renderer appears the message:

(Deprecated) Deselect this option to use the legacy renderer, which is unsupported and will be removed in a future version.

However, at present, the Core Text renderer is not accessible in VoiceOver.

Describe the solution you'd like

Make Core Text renderer accessible in VoiceOver prior to the removal of the legacy renderer.

Describe alternatives you've considered

If the legacy renderer is removed prior to making Core Text accessible then I won't be able to use MacVim anymore as a blind user. And MacVim is great, so this would be a sad day indeed.

I'd have to use gasp emacs? Or use vim in a terminal full time? Yuck.

Start with the Advanced settings checkbox labeled “Use Core Text renderer” and compare its behavior with VoiceOver when the Core Text renderer is selected. The work is done when the Core Text renderer is usable in VoiceOver before the legacy renderer is removed.