Issue #18101: Tcl.split() now process Unicode strings nested in a tuple as it
do with byte strings.

Added tests for Tcl.split() and tcl.splitline().
diff --git a/Misc/NEWS b/Misc/NEWS
index 804e8c2..9bd5791 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -24,6 +24,9 @@
 Library
 -------
 
+- Issue #18101: Tcl.split() now process Unicode strings nested in a tuple as it
+  do with byte strings.
+
 - Issue #18427: str.replace could crash the interpreter with huge strings.
 
 - Issue #18347: ElementTree's html serializer now preserves the case of