Teach this script about \AA and \aa (the Scandanavian A-ring
characters); \AA is used in whatsnew23.tex.
diff --git a/Doc/tools/py2texi.el b/Doc/tools/py2texi.el
index f9d8b96..a3fb94e 100644
--- a/Doc/tools/py2texi.el
+++ b/Doc/tools/py2texi.el
@@ -200,7 +200,9 @@
 \N regular expression notation in strings of BEGIN.")
 
 (defconst py2texi-commands
-  '(("ABC" 0 "ABC")
+  '(("AA" 0 "@AA{}")
+    ("aa" 0 "@aa{}")
+    ("ABC" 0 "ABC")
     ("appendix" 0 (progn (setq appendix t) ""))
     ("ASCII" 0 "ASCII")
     ("author" 1 (progn (setq author (match-string 1 string)) ""))