windows shell fix

src/wallet/init.cpp

@@ -59,7 +59,7 @@ void WalletInit::AddWalletOptions() const
     gArgs.AddArg("-walletbroadcast",  strprintf("Make the wallet broadcast transactions (default: %u)", DEFAULT_WALLETBROADCAST), ArgsManager::ALLOW_ANY, OptionsCategory::WALLET);
     gArgs.AddArg("-walletdir=<dir>", "Specify directory to hold wallets (default: <datadir>/wallets if it exists, otherwise <datadir>)", ArgsManager::ALLOW_ANY, OptionsCategory::WALLET);
 #if HAVE_SYSTEM
-    gArgs.AddArg("-walletnotify=<cmd>", "Execute command when a wallet transaction changes (%s in cmd is replaced by TxID and %w is replaced by wallet name)", ArgsManager::ALLOW_ANY, OptionsCategory::WALLET);
+    gArgs.AddArg("-walletnotify=<cmd>", "Execute command when a wallet transaction changes. %s in cmd is replaced by TxID and %w is replaced by wallet name. %w is not currently implmented on windows. On systems where %w is supported, it should NOT be quoted because this would break shell escaping used to invoke the command.", ArgsManager::ALLOW_ANY, OptionsCategory::WALLET);
 #endif
     gArgs.AddArg("-walletrbf", strprintf("Send transactions with full-RBF opt-in enabled (RPC only, default: %u)", DEFAULT_WALLET_RBF), ArgsManager::ALLOW_ANY, OptionsCategory::WALLET);
     gArgs.AddArg("-zapwallettxes=<mode>", "Delete all wallet transactions and only recover those parts of the blockchain through -rescan on startup"

src/wallet/wallet.cpp

@@ -1156,9 +1156,12 @@ bool CWallet::AddToWallet(const CWalletTx& wtxIn, bool fFlushOnClose)
     if (!strCmd.empty())
     {
         boost::replace_all(strCmd, "%s", wtxIn.GetHash().GetHex());
-#ifdef WIN32
-        boost::replace_all(strCmd, "%w", GetName());
-#else
+#ifndef WIN32
+        // Substituting the wallet name isn't currently supported on windows
+        // because windows shell escaping has not been implemented yet:
+        // https://github.com/bitcoin/bitcoin/pull/13339#issuecomment-537384875
+        // A few ways it could be implemented in the future are described in:
+        // https://github.com/bitcoin/bitcoin/pull/13339#issuecomment-461288094
         boost::replace_all(strCmd, "%w", ShellEscape(GetName()));
 #endif
         std::thread t(runCommand, strCmd);