Expose FormatEmacsTransactions to Python.

emacs.cc

@@ -57,3 +57,26 @@ void format_emacs_transactions::operator()(transaction_t& xact)
 }
 
 } // namespace ledger
+
+#ifdef USE_BOOST_PYTHON
+
+#include <boost/python.hpp>
+
+using namespace boost::python;
+using namespace ledger;
+
+void export_emacs()
+{
+  typedef
+    pystream_handler_wrap<format_emacs_transactions, transaction_t>
+    format_emacs_transactions_wrap;
+
+  class_< format_emacs_transactions_wrap, bases<item_handler<transaction_t> > >
+    ("FormatEmacsTransactions",
+     init<PyObject *>()[with_custodian_and_ward<1, 2>()])
+    .def("flush", &format_emacs_transactions_wrap::flush)
+    .def("__call__", &format_emacs_transactions_wrap::operator())
+    ;
+}
+
+#endif // USE_BOOST_PYTHON