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?
#include <wallet/walletdb.h>
#include <consensus/tx_verify.h>
#include <consensus/validation.h>
#include <fs.h>
#include <key_io.h>
#include <protocol.h>
#include <serialize.h>
#include <sync.h>
#include <util.h>
#include <utiltime.h>
#include <wallet/wallet.h>
#include <atomic>
#include <boost/thread.hpp>
bool WalletBatch::WriteName(const std::string& strAddress, const std::string& strName)
{
    return WriteIC(std::make_pair(std::string("name"), strAddress), strName);
}
bool WalletBatch::EraseName(const std::string& strAddress)
{
    
    
    return EraseIC(std::make_pair(std::string("name"), strAddress));
}
bool WalletBatch::WritePurpose(const std::string& strAddress, const std::string& strPurpose)