Issue #12288: Consider '0' and '0.0' as valid initialvalue for tkinter SimpleDialog.
diff --git a/Misc/ACKS b/Misc/ACKS
index cdea735..3d2393c 100644
--- a/Misc/ACKS
+++ b/Misc/ACKS
@@ -576,6 +576,7 @@
 Mike Meyer
 Steven Miale
 Trent Mick
+Tom Middleton
 Stan Mihai
 Aristotelis Mikropoulos
 Damien Miller