Issue #13153: Tkinter functions now raise TclError instead of ValueError when
a string argument contains non-BMP character.
diff --git a/Modules/_tkinter.c b/Modules/_tkinter.c
index 23906de..c6a3e38 100644
--- a/Modules/_tkinter.c
+++ b/Modules/_tkinter.c
@@ -993,7 +993,7 @@
         for (i = 0; i < size; i++) {
             if (inbuf[i] >= 0x10000) {
                 /* Tcl doesn't do UTF-16, yet. */
-                PyErr_Format(PyExc_ValueError,
+                PyErr_Format(Tkinter_TclError,
                              "character U+%x is above the range "
                              "(U+0000-U+FFFF) allowed by Tcl",
                              inbuf[i]);