Back out of setting the default charset to iso-8859-1.
diff --git a/Doc/lib/libgettext.tex b/Doc/lib/libgettext.tex
index ac5ad8c..0c94e99 100644
--- a/Doc/lib/libgettext.tex
+++ b/Doc/lib/libgettext.tex
@@ -295,7 +295,7 @@
contain the \code{Project-Id-Version}. If the key
\code{Content-Type} is found, then the \code{charset} property is used
to initialize the ``protected'' \member{_charset} instance variable,
-defaulting to \code{iso-8859-1} if not found. The entire set of
+defaulting to \code{None} if not found. The entire set of
key/value pairs are placed into a dictionary and set as the
``protected'' \member{_info} instance variable.