Missing comma in tuple initializer caused webbrowser.open() not to work at
all in MacPython. (why did noone ever notice this?)
diff --git a/Lib/webbrowser.py b/Lib/webbrowser.py
index ca4976a..93d2a8b 100644
--- a/Lib/webbrowser.py
+++ b/Lib/webbrowser.py
@@ -296,7 +296,7 @@
 else:
     # internet-config is the only supported controller on MacOS,
     # so don't mess with the default!
-    _tryorder = ("internet-config")
+    _tryorder = ("internet-config", )
     register("internet-config", InternetConfig)
 
 #