In the log I see things like:

    2017-09-13 03:54:33 init message: Rescanning...
    2017-09-13 03:54:33 Rescanning last 68616 blocks (from block 416339)...
    2017-09-13 03:54:40 AddToWallet xxxxx  update
    2017-09-13 03:55:33 Still rescanning. At block 418849. Progress=0.549138

I would be interested to see the wallet file name on each of these log lines.

Would there be any interest in merging such a PR?
for (size_t posInBlock = 0; posInBlock < block.vtx.size(); ++posInBlock) {
                    SyncTransaction(block.vtx[posInBlock], pindex, posInBlock, fUpdate);
                }
            } else {
                ret = pindex;
            }
            if (pindex == pindexStop) {
                break;
            }
            {
                LOCK(cs_main);
                pindex = chainActive.Next(pindex);
                progress_current = GuessVerificationProgress(chainParams.TxData(), pindex);
                if (pindexStop == nullptr && tip != chainActive.Tip()) {
                    tip = chainActive.Tip();
                    
                    progress_end = GuessVerificationProgress(chainParams.TxData(), tip);
                }
            }
        }
        if (pindex && fAbortRescan) {
            LogPrintf("Rescan aborted at block %d. Progress=%f\n", pindex->nHeight, progress_current);
        } else if (pindex && ShutdownRequested()) {
            LogPrintf("Rescan interrupted by shutdown request at block %d. Progress=%f\n", pindex->nHeight, progress_current);
        }
        ShowProgress(_("Rescanning..."), 100); 
    }
    return ret;
}
void CWallet::ReacceptWalletTransactions()