Remove all \bcode / \ecode cruft; this is no longer needed. See previous
checkin of myformat.sty.
Change "\renewcommand{\indexsubitem}{(...)}" to "\setindexsubitem{(...)}"
everywhere.
Some other minor nits that I happened to come across.
diff --git a/Doc/lib/libcopyreg.tex b/Doc/lib/libcopyreg.tex
index dffcf43..cffc395 100644
--- a/Doc/lib/libcopyreg.tex
+++ b/Doc/lib/libcopyreg.tex
@@ -12,7 +12,7 @@
constructors which are not classes. Such constructors may be factory
functions or class instances.
-\renewcommand{\indexsubitem}{(in module copy_reg)}
+\setindexsubitem{(in module copy_reg)}
\begin{funcdesc}{constructor}{object}
Declares \var{object} to be a valid constructor.