Bitcoin Core's `setgenerate` RPC call has had a special meaning for -regtest (namely instantaneously mining a number of blocks, instead of starting a background CPU miner).

We're planning to deprecate that overloaded behaviour, and replace it with a separate RPC call `generate`. Is there any software or user who would need compatibility with the old behaviour? We're generally very conservative in changing RPC behaviour, but as this is not related to any production functionality, we may as well just switch it.