diff --git a/7.3.657 b/7.3.657
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+To: vim_dev@googlegroups.com
+Subject: Patch 7.3.657
+Fcc: outbox
+From: Bram Moolenaar <Bram@moolenaar.net>
+Mime-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+------------
+
+Patch 7.3.657
+Problem: Python bindings silently truncate string values containing NUL.
+Solution: Fail when a string contains NUL. (ZyX)
+Files: src/if_python.c, src/if_python3.c
+
+
+*** ../vim-7.3.656/src/if_python.c 2012-09-05 18:54:37.000000000 +0200
+--- src/if_python.c 2012-09-05 19:02:07.000000000 +0200
+***************
+*** 191,196 ****
+--- 191,197 ----
+ # define PyRun_SimpleString dll_PyRun_SimpleString
+ # define PyRun_String dll_PyRun_String
+ # define PyString_AsString dll_PyString_AsString
++ # define PyString_AsStringAndSize dll_PyString_AsStringAndSize
+ # define PyString_FromString dll_PyString_FromString
+ # define PyString_FromStringAndSize dll_PyString_FromStringAndSize
+ # define PyString_Size dll_PyString_Size
+***************
+*** 288,293 ****
+--- 289,295 ----
+ static int(*dll_PyRun_SimpleString)(char *);
+ static PyObject *(*dll_PyRun_String)(char *, int, PyObject *, PyObject *);
+ static char*(*dll_PyString_AsString)(PyObject *);
++ static int(*dll_PyString_AsStringAndSize)(PyObject *, char **, int *);
+ static PyObject*(*dll_PyString_FromString)(const char *);
+ static PyObject*(*dll_PyString_FromStringAndSize)(const char *, PyInt);
+ static PyInt(*dll_PyString_Size)(PyObject *);
+***************
+*** 406,411 ****
+--- 408,414 ----
+ {"PyRun_SimpleString", (PYTHON_PROC*)&dll_PyRun_SimpleString},
+ {"PyRun_String", (PYTHON_PROC*)&dll_PyRun_String},
+ {"PyString_AsString", (PYTHON_PROC*)&dll_PyString_AsString},
++ {"PyString_AsStringAndSize", (PYTHON_PROC*)&dll_PyString_AsStringAndSize},
+ {"PyString_FromString", (PYTHON_PROC*)&dll_PyString_FromString},
+ {"PyString_FromStringAndSize", (PYTHON_PROC*)&dll_PyString_FromStringAndSize},
+ {"PyString_Size", (PYTHON_PROC*)&dll_PyString_Size},
+***************
+*** 578,591 ****
+ static int initialised = 0;
+ #define PYINITIALISED initialised
+
+- /* Add conversion from PyInt? */
+ #define DICTKEY_GET(err) \
+ if (!PyString_Check(keyObject)) \
+ { \
+ PyErr_SetString(PyExc_TypeError, _("only string keys are allowed")); \
+ return err; \
+ } \
+! key = (char_u *) PyString_AsString(keyObject);
+ #define DICTKEY_UNREF
+ #define DICTKEY_DECL
+
+--- 581,595 ----
+ static int initialised = 0;
+ #define PYINITIALISED initialised
+
+ #define DICTKEY_GET(err) \
+ if (!PyString_Check(keyObject)) \
+ { \
+ PyErr_SetString(PyExc_TypeError, _("only string keys are allowed")); \
+ return err; \
+ } \
+! if (PyString_AsStringAndSize(keyObject, (char **) &key, NULL) == -1) \
+! return err;
+!
+ #define DICTKEY_UNREF
+ #define DICTKEY_DECL
+
+*** ../vim-7.3.656/src/if_python3.c 2012-09-05 18:54:37.000000000 +0200
+--- src/if_python3.c 2012-09-05 19:02:07.000000000 +0200
+***************
+*** 172,177 ****
+--- 172,178 ----
+ # define PyUnicode_AsEncodedString py3_PyUnicode_AsEncodedString
+ # undef PyBytes_AsString
+ # define PyBytes_AsString py3_PyBytes_AsString
++ # define PyBytes_AsStringAndSize py3_PyBytes_AsStringAndSize
+ # undef PyBytes_FromString
+ # define PyBytes_FromString py3_PyBytes_FromString
+ # define PyFloat_FromDouble py3_PyFloat_FromDouble
+***************
+*** 273,278 ****
+--- 274,280 ----
+ static char* (*py3__PyUnicode_AsString)(PyObject *unicode);
+ static PyObject* (*py3_PyUnicode_AsEncodedString)(PyObject *unicode, const char* encoding, const char* errors);
+ static char* (*py3_PyBytes_AsString)(PyObject *bytes);
++ static int (*py3_PyBytes_AsStringAndSize)(PyObject *bytes, char **buffer, int *length);
+ static PyObject* (*py3_PyBytes_FromString)(char *str);
+ static PyObject* (*py3_PyFloat_FromDouble)(double num);
+ static double (*py3_PyFloat_AsDouble)(PyObject *);
+***************
+*** 379,384 ****
+--- 381,387 ----
+ {"PyImport_AppendInittab", (PYTHON_PROC*)&py3_PyImport_AppendInittab},
+ {"_PyUnicode_AsString", (PYTHON_PROC*)&py3__PyUnicode_AsString},
+ {"PyBytes_AsString", (PYTHON_PROC*)&py3_PyBytes_AsString},
++ {"PyBytes_AsStringAndSize", (PYTHON_PROC*)&py3_PyBytes_AsStringAndSize},
+ {"PyBytes_FromString", (PYTHON_PROC*)&py3_PyBytes_FromString},
+ {"PyFloat_FromDouble", (PYTHON_PROC*)&py3_PyFloat_FromDouble},
+ {"PyFloat_AsDouble", (PYTHON_PROC*)&py3_PyFloat_AsDouble},
+***************
+*** 544,560 ****
+
+ #define PYINITIALISED py3initialised
+
+! /* Add conversion from PyInt? */
+ #define DICTKEY_GET(err) \
+ if (PyBytes_Check(keyObject)) \
+! key = (char_u *) PyBytes_AsString(keyObject); \
+ else if (PyUnicode_Check(keyObject)) \
+ { \
+ bytes = PyString_AsBytes(keyObject); \
+ if (bytes == NULL) \
+ return err; \
+! key = (char_u *) PyBytes_AsString(bytes); \
+! if (key == NULL) \
+ return err; \
+ } \
+ else \
+--- 547,566 ----
+
+ #define PYINITIALISED py3initialised
+
+! #define DICTKEY_DECL PyObject *bytes = NULL;
+!
+ #define DICTKEY_GET(err) \
+ if (PyBytes_Check(keyObject)) \
+! { \
+! if (PyBytes_AsStringAndSize(keyObject, (char **) &key, NULL) == -1) \
+! return err; \
+! } \
+ else if (PyUnicode_Check(keyObject)) \
+ { \
+ bytes = PyString_AsBytes(keyObject); \
+ if (bytes == NULL) \
+ return err; \
+! if (PyBytes_AsStringAndSize(bytes, (char **) &key, NULL) == -1) \
+ return err; \
+ } \
+ else \
+***************
+*** 562,573 ****
+ PyErr_SetString(PyExc_TypeError, _("only string keys are allowed")); \
+ return err; \
+ }
+ #define DICTKEY_UNREF \
+ if (bytes != NULL) \
+ Py_XDECREF(bytes);
+
+- #define DICTKEY_DECL PyObject *bytes = NULL;
+-
+ /*
+ * Include the code shared with if_python.c
+ */
+--- 568,578 ----
+ PyErr_SetString(PyExc_TypeError, _("only string keys are allowed")); \
+ return err; \
+ }
++
+ #define DICTKEY_UNREF \
+ if (bytes != NULL) \
+ Py_XDECREF(bytes);
+
+ /*
+ * Include the code shared with if_python.c
+ */
+*** ../vim-7.3.656/src/version.c 2012-09-05 18:54:37.000000000 +0200
+--- src/version.c 2012-09-05 19:03:03.000000000 +0200
+***************
+*** 721,722 ****
+--- 721,724 ----
+ { /* Add new patch number below this line */
++ /**/
++ 657,
+ /**/
+
+--
+Have you heard about the new Barbie doll? It's called Divorce
+Barbie. It comes with all of Ken's stuff.
+
+ /// Bram Moolenaar -- Bram@Moolenaar.net -- http://www.Moolenaar.net \\\
+/// sponsor Vim, vote for features -- http://www.Vim.org/sponsor/ \\\
+\\\ an exciting new programming language -- http://www.Zimbu.org ///
+ \\\ help me help AIDS victims -- http://ICCF-Holland.org ///