Perhaps it is holding full tension inside the rim. I doubt it will last too long, but breaking a spoke is not too serious. A 32 spoke rim can lose multiple (sometimes 4 or 5 or more) and still be rideable for the short term. I once broke a spoke at the start of a 90 km ride and just kept riding By the end of the day 3 more had broken, and the wheel was pretty out of whack, but I was still riding. A lower count spoke would presumably become unridable sooner.
The wheel is toast, though. Common sense would suggest the rim has failed and the repair has got it probably good enough to ride, but very likely much weaker than it was before the failure.
I would plan for the inevitable complete failure of the rim (nipple pulls right through, same seriousness as a broken spoke) and be ready to replace it when it happens.

How old is the wheel and how many miles?