simplewallet.sign_transfer: rename export to export_raw, add help message

src/simplewallet/simplewallet.cpp

@@ -2082,8 +2082,8 @@ simple_wallet::simple_wallet()
                            tr("Donate <amount> to the development team (donate.getmonero.org)."));
   m_cmd_binder.set_handler("sign_transfer",
                            boost::bind(&simple_wallet::sign_transfer, this, _1),
-                           tr("sign_transfer [export]"),
-                           tr("Sign a transaction from a file."));
+                           tr("sign_transfer [export_raw]"),
+                           tr("Sign a transaction from a file. If the parameter \"export_raw\" is specified, transaction raw hex data suitable for the daemon RPC /sendrawtransaction is exported."));
   m_cmd_binder.set_handler("submit_transfer",
                            boost::bind(&simple_wallet::submit_transfer, this, _1),
                            tr("Submit a signed transaction from a file."));
@@ -5469,9 +5469,9 @@ bool simple_wallet::sign_transfer(const std::vector<std::string> &args_)
      fail_msg_writer() << tr("This is a watch only wallet");
      return true;
   }
-  if (args_.size() > 1 || (args_.size() == 1 && args_[0] != "export"))
+  if (args_.size() > 1 || (args_.size() == 1 && args_[0] != "export_raw"))
   {
-    fail_msg_writer() << tr("usage: sign_transfer [export]");
+    fail_msg_writer() << tr("usage: sign_transfer [export_raw]");
     return true;
   }
   if (m_wallet->ask_password() && !get_and_verify_password()) { return true; }