Issue #16809: Tkinter's splitlist() and split() methods now accept Tcl_Obj

argument.

This is needed for support Tcl/Tk 8.6.

Lib/test/test_tcl.py

@@ -200,6 +200,8 @@ class TclTest(unittest.TestCase):
             (('a', 3.4), ('a', 3.4)),
             ((), ()),
             (call('list', 1, '2', (3.4,)), (1, '2', (3.4,))),
+            (call('dict', 'create', 1, '\u20ac', b'\xe2\x82\xac', (3.4,)),
+                    (1, '\u20ac', '\u20ac', (3.4,))),
         ]
         for arg, res in testcases:
             self.assertEqual(splitlist(arg), res, msg=arg)
@@ -232,6 +234,8 @@ class TclTest(unittest.TestCase):
             (('a', (2, 3.4)), ('a', (2, 3.4))),
             ((), ()),
             (call('list', 1, '2', (3.4,)), (1, '2', (3.4,))),
+            (call('dict', 'create', 12, '\u20ac', b'\xe2\x82\xac', (3.4,)),
+                    (12, '\u20ac', '\u20ac', (3.4,))),
         ]
         for arg, res in testcases:
             self.assertEqual(split(arg), res, msg=arg)

Misc/NEWS

@@ -66,6 +66,9 @@ Core and Builtins
 Library
 -------
 
+- Issue #16809: Tkinter's splitlist() and split() methods now accept Tcl_Obj
+  argument.
+
 - Issue #18324: set_payload now correctly handles binary input.  This also
   supersedes the previous fixes for #14360, #1717, and #16564.
 

Modules/_tkinter.c

@@ -1940,16 +1940,35 @@ Tkapp_SplitList(PyObject *self, PyObject *args)
     char *list;
     int argc;
     char **argv;
-    PyObject *v;
+    PyObject *arg, *v;
     int i;
 
-    if (PyTuple_Size(args) == 1) {
-        v = PyTuple_GetItem(args, 0);
-        if (PyTuple_Check(v)) {
-            Py_INCREF(v);
-            return v;
+    if (!PyArg_ParseTuple(args, "O:splitlist", &arg))
+        return NULL;
+    if (PyTclObject_Check(arg)) {
+        int objc;
+        Tcl_Obj **objv;
+        if (Tcl_ListObjGetElements(Tkapp_Interp(self),
+                                   ((PyTclObject*)arg)->value,
+                                   &objc, &objv) == TCL_ERROR) {
+            return Tkinter_Error(self);
+        }
+        if (!(v = PyTuple_New(objc)))
+            return NULL;
+        for (i = 0; i < objc; i++) {
+            PyObject *s = FromObj(self, objv[i]);
+            if (!s || PyTuple_SetItem(v, i, s)) {
+                Py_DECREF(v);
+                return NULL;
+            }
         }
+        return v;
     }
+    if (PyTuple_Check(arg)) {
+        Py_INCREF(arg);
+        return arg;
+    }
+
     if (!PyArg_ParseTuple(args, "et:splitlist", "utf-8", &list))
         return NULL;
 
@@ -1980,16 +1999,38 @@ Tkapp_SplitList(PyObject *self, PyObject *args)
 static PyObject *
 Tkapp_Split(PyObject *self, PyObject *args)
 {
-    PyObject *v;
+    PyObject *arg, *v;
     char *list;
 
-    if (PyTuple_Size(args) == 1) {
-        PyObject* o = PyTuple_GetItem(args, 0);
-        if (PyTuple_Check(o)) {
-            o = SplitObj(o);
-            return o;
+    if (!PyArg_ParseTuple(args, "O:split", &arg))
+        return NULL;
+    if (PyTclObject_Check(arg)) {
+        Tcl_Obj *value = ((PyTclObject*)arg)->value;
+        int objc;
+        Tcl_Obj **objv;
+        int i;
+        if (Tcl_ListObjGetElements(Tkapp_Interp(self), value,
+                                   &objc, &objv) == TCL_ERROR) {
+            return FromObj(self, value);
         }
+        if (objc == 0)
+            return PyUnicode_FromString("");
+        if (objc == 1)
+            return FromObj(self, objv[0]);
+        if (!(v = PyTuple_New(objc)))
+            return NULL;
+        for (i = 0; i < objc; i++) {
+            PyObject *s = FromObj(self, objv[i]);
+            if (!s || PyTuple_SetItem(v, i, s)) {
+                Py_DECREF(v);
+                return NULL;
+            }
+        }
+        return v;
     }
+    if (PyTuple_Check(arg))
+        return SplitObj(arg);
+
     if (!PyArg_ParseTuple(args, "et:split", "utf-8", &list))
         return NULL;
     v = Split(list);