diff --git a/7.3.966 b/7.3.966
new file mode 100644
index 0000000..6dc6950
--- /dev/null
+++ b/7.3.966
@@ -0,0 +1,301 @@
+To: vim_dev@googlegroups.com
+Subject: Patch 7.3.966
+Fcc: outbox
+From: Bram Moolenaar <Bram@moolenaar.net>
+Mime-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+------------
+
+Patch 7.3.966
+Problem: There is ":py3do" but no ":pydo".
+Solution: Add the ":pydo" command. (Lilydjwg)
+Files: runtime/doc/if_pyth.txt, src/ex_cmds.h, src/ex_docmd.c,
+ src/if_py_both.h, src/if_python.c, src/if_python3.c,
+ src/proto/if_python.pro
+
+
+*** ../vim-7.3.965/runtime/doc/if_pyth.txt 2013-05-17 16:18:27.000000000 +0200
+--- runtime/doc/if_pyth.txt 2013-05-17 16:34:28.000000000 +0200
+***************
+*** 57,62 ****
+--- 57,78 ----
+ Note: Python is very sensitive to the indenting. Make sure the "class" line
+ and "EOF" do not have any indent.
+
++ *:pydo*
++ :[range]pydo {body} Execute Python function "def _vim_pydo(line, linenr):
++ {body}" for each line in the [range], with the
++ function arguments being set to the text of each line
++ in turn, without a trailing <EOL>, and the current
++ line number. The function should return a string or
++ None. If a string is returned, it becomes the text of
++ the line in the current turn. The default for [range]
++ is the whole file: "1,$".
++ {not in Vi}
++
++ Examples:
++ >
++ :pydo return "%s\t%d" % (line[::-1], len(line))
++ :pydo if line: return "%4d: %s" % (linenr, line)
++ <
+ *:pyfile* *:pyf*
+ :[range]pyf[ile] {file}
+ Execute the Python script in {file}. The whole
+***************
+*** 485,511 ****
+ 8. Python 3 *python3*
+
+ *:py3* *:python3*
+! The |:py3| and |:python3| commands work similar to |:python|. A simple check
+ if the `:py3` command is working: >
+ :py3 print("Hello")
+ < *:py3file*
+! The |:py3file| command works similar to |:pyfile|.
+!
+ *:py3do* *E863*
+! :[range]py3do {body} Execute Python function "def _vim_pydo(line, linenr):
+! {body}" for each line in the [range], with the
+! function arguments being set to the text of each line
+! in turn, without a trailing <EOL>, and the current
+! line number. The function should return a string or
+! None. If a string is returned, it becomes the text of
+! the line in the current turn. The default for [range]
+! is the whole file: "1,$".
+! {not in Vi}
+
+- Examples:
+- >
+- :py3do return "%s\t%d" % (line[::-1], len(line))
+- :py3do if line: return "%4d: %s" % (linenr, line)
+
+ Vim can be built in four ways (:version output):
+ 1. No Python support (-python, -python3)
+--- 501,514 ----
+ 8. Python 3 *python3*
+
+ *:py3* *:python3*
+! The `:py3` and `:python3` commands work similar to `:python`. A simple check
+ if the `:py3` command is working: >
+ :py3 print("Hello")
+ < *:py3file*
+! The `:py3file` command works similar to `:pyfile`.
+ *:py3do* *E863*
+! The `:py3do` command works similar to `:pydo`.
+
+
+ Vim can be built in four ways (:version output):
+ 1. No Python support (-python, -python3)
+*** ../vim-7.3.965/src/ex_cmds.h 2013-05-15 18:28:08.000000000 +0200
+--- src/ex_cmds.h 2013-05-17 16:29:38.000000000 +0200
+***************
+*** 739,744 ****
+--- 739,746 ----
+ TRLBAR|CMDWIN),
+ EX(CMD_python, "python", ex_python,
+ RANGE|EXTRA|NEEDARG|CMDWIN),
++ EX(CMD_pydo, "pydo", ex_pydo,
++ RANGE|DFLALL|EXTRA|NEEDARG|CMDWIN),
+ EX(CMD_pyfile, "pyfile", ex_pyfile,
+ RANGE|FILE1|NEEDARG|CMDWIN),
+ EX(CMD_py3, "py3", ex_py3,
+*** ../vim-7.3.965/src/ex_docmd.c 2013-05-15 18:28:08.000000000 +0200
+--- src/ex_docmd.c 2013-05-17 16:29:38.000000000 +0200
+***************
+*** 268,273 ****
+--- 268,274 ----
+ #endif
+ #ifndef FEAT_PYTHON
+ # define ex_python ex_script_ni
++ # define ex_pydo ex_ni
+ # define ex_pyfile ex_ni
+ #endif
+ #ifndef FEAT_PYTHON3
+*** ../vim-7.3.965/src/if_py_both.h 2013-05-17 16:24:27.000000000 +0200
+--- src/if_py_both.h 2013-05-17 16:29:38.000000000 +0200
+***************
+*** 22,27 ****
+--- 22,28 ----
+ #else
+ # define ENC_OPT "latin1"
+ #endif
++ #define DOPY_FUNC "_vim_pydo"
+
+ #define PyErr_SetVim(str) PyErr_SetString(VimError, str)
+
+*** ../vim-7.3.965/src/if_python.c 2013-05-17 16:18:27.000000000 +0200
+--- src/if_python.c 2013-05-17 16:29:38.000000000 +0200
+***************
+*** 198,203 ****
+--- 198,206 ----
+ # define PyModule_GetDict dll_PyModule_GetDict
+ # define PyRun_SimpleString dll_PyRun_SimpleString
+ # define PyRun_String dll_PyRun_String
++ # define PyObject_GetAttrString dll_PyObject_GetAttrString
++ # define PyObject_SetAttrString dll_PyObject_SetAttrString
++ # define PyObject_CallFunctionObjArgs dll_PyObject_CallFunctionObjArgs
+ # define PyString_AsString dll_PyString_AsString
+ # define PyString_AsStringAndSize dll_PyString_AsStringAndSize
+ # define PyString_FromString dll_PyString_FromString
+***************
+*** 303,308 ****
+--- 306,314 ----
+ static PyObject*(*dll_PyModule_GetDict)(PyObject *);
+ static int(*dll_PyRun_SimpleString)(char *);
+ static PyObject *(*dll_PyRun_String)(char *, int, PyObject *, PyObject *);
++ static PyObject* (*dll_PyObject_GetAttrString)(PyObject *, const char *);
++ static PyObject* (*dll_PyObject_SetAttrString)(PyObject *, const char *, PyObject *);
++ static PyObject* (*dll_PyObject_CallFunctionObjArgs)(PyObject *, ...);
+ static char*(*dll_PyString_AsString)(PyObject *);
+ static int(*dll_PyString_AsStringAndSize)(PyObject *, char **, int *);
+ static PyObject*(*dll_PyString_FromString)(const char *);
+***************
+*** 440,445 ****
+--- 446,454 ----
+ {"PyModule_GetDict", (PYTHON_PROC*)&dll_PyModule_GetDict},
+ {"PyRun_SimpleString", (PYTHON_PROC*)&dll_PyRun_SimpleString},
+ {"PyRun_String", (PYTHON_PROC*)&dll_PyRun_String},
++ {"PyObject_GetAttrString", (PYTHON_PROC*)&dll_PyObject_GetAttrString},
++ {"PyObject_SetAttrString", (PYTHON_PROC*)&dll_PyObject_SetAttrString},
++ {"PyObject_CallFunctionObjArgs", (PYTHON_PROC*)&dll_PyObject_CallFunctionObjArgs},
+ {"PyString_AsString", (PYTHON_PROC*)&dll_PyString_AsString},
+ {"PyString_AsStringAndSize", (PYTHON_PROC*)&dll_PyString_AsStringAndSize},
+ {"PyString_FromString", (PYTHON_PROC*)&dll_PyString_FromString},
+***************
+*** 995,1000 ****
+--- 1004,1096 ----
+ DoPythonCommand(eap, buffer, NULL);
+ }
+
++ void
++ ex_pydo(exarg_T *eap)
++ {
++ linenr_T i;
++ const char *code_hdr = "def " DOPY_FUNC "(line, linenr):\n ";
++ const char *s = (const char *) eap->arg;
++ size_t len;
++ char *code;
++ int status;
++ PyObject *pyfunc, *pymain;
++ PyGILState_STATE pygilstate;
++
++ if (Python_Init())
++ return;
++
++ if (u_save(eap->line1 - 1, eap->line2 + 1) != OK)
++ {
++ EMSG(_("cannot save undo information"));
++ return;
++ }
++ len = strlen(code_hdr) + strlen(s);
++ code = malloc(len + 1);
++ STRCPY(code, code_hdr);
++ STRNCAT(code, s, len + 1);
++ pygilstate = PyGILState_Ensure();
++ status = PyRun_SimpleString(code);
++ vim_free(code);
++ if (status)
++ {
++ EMSG(_("failed to run the code"));
++ return;
++ }
++ status = 0; /* good */
++ pymain = PyImport_AddModule("__main__");
++ pyfunc = PyObject_GetAttrString(pymain, DOPY_FUNC);
++ PyGILState_Release(pygilstate);
++
++ for (i = eap->line1; i <= eap->line2; i++)
++ {
++ const char *line;
++ PyObject *pyline, *pylinenr, *pyret;
++
++ line = (char *)ml_get(i);
++ pygilstate = PyGILState_Ensure();
++ pyline = PyString_FromStringAndSize(line, strlen(line));
++ pylinenr = PyLong_FromLong(i);
++ pyret = PyObject_CallFunctionObjArgs(pyfunc, pyline, pylinenr, NULL);
++ Py_DECREF(pyline);
++ Py_DECREF(pylinenr);
++ if (!pyret)
++ {
++ PyErr_PrintEx(0);
++ PythonIO_Flush();
++ status = 1;
++ goto out;
++ }
++
++ if (pyret && pyret != Py_None)
++ {
++ if (!PyString_Check(pyret))
++ {
++ EMSG(_("E863: return value must be an instance of str"));
++ Py_XDECREF(pyret);
++ status = 1;
++ goto out;
++ }
++ ml_replace(i, (char_u *) PyString_AsString(pyret), 1);
++ changed();
++ #ifdef SYNTAX_HL
++ syn_changed(i); /* recompute syntax hl. for this line */
++ #endif
++ }
++ Py_XDECREF(pyret);
++ PythonIO_Flush();
++ PyGILState_Release(pygilstate);
++ }
++ pygilstate = PyGILState_Ensure();
++ out:
++ Py_DECREF(pyfunc);
++ PyObject_SetAttrString(pymain, DOPY_FUNC, NULL);
++ PyGILState_Release(pygilstate);
++ if (status)
++ return;
++ check_cursor();
++ update_curbuf(NOT_VALID);
++ }
++
+ /******************************************************
+ * 2. Python output stream: writes output via [e]msg().
+ */
+*** ../vim-7.3.965/src/if_python3.c 2013-05-17 16:18:27.000000000 +0200
+--- src/if_python3.c 2013-05-17 16:29:38.000000000 +0200
+***************
+*** 76,82 ****
+ #else
+ # define CODEC_ERROR_HANDLER NULL
+ #endif
+- #define DOPY_FUNC "_vim_pydo"
+
+ /* Python 3 does not support CObjects, always use Capsules */
+ #define PY_USE_CAPSULE
+--- 76,81 ----
+*** ../vim-7.3.965/src/proto/if_python.pro 2013-05-15 15:12:25.000000000 +0200
+--- src/proto/if_python.pro 2013-05-17 16:29:38.000000000 +0200
+***************
+*** 3,8 ****
+--- 3,9 ----
+ void python_end __ARGS((void));
+ int python_loaded __ARGS((void));
+ void ex_python __ARGS((exarg_T *eap));
++ void ex_pydo __ARGS((exarg_T *eap));
+ void ex_pyfile __ARGS((exarg_T *eap));
+ void python_buffer_free __ARGS((buf_T *buf));
+ void python_window_free __ARGS((win_T *win));
+*** ../vim-7.3.965/src/version.c 2013-05-17 16:24:27.000000000 +0200
+--- src/version.c 2013-05-17 16:39:19.000000000 +0200
+***************
+*** 730,731 ****
+--- 730,733 ----
+ { /* Add new patch number below this line */
++ /**/
++ 966,
+ /**/
+
+--
+A hamburger walks into a bar, and the bartender says: "I'm sorry,
+but we don't serve food here."
+
+ /// 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 ///