I made a suggested edit to someone else's post. When it hadn't been approved a few hours later I tried to find out whether it was still in the queue or had been rejected, but I couldn't.
Is the ability to check this lurking somewhere I didn't look? If not, I'll resubmit with a feature request.
(FWIW I now know that it was rejected, but this question is about the general case rather than the specific).