Amend curses docs by info how to write non-ascii characters.
Thanks to Jeroen Ruigrok van der Werven.
diff --git a/Doc/library/curses.rst b/Doc/library/curses.rst
index 22cb626..93a57ba 100644
--- a/Doc/library/curses.rst
+++ b/Doc/library/curses.rst
@@ -19,6 +19,19 @@
designed to match the API of ncurses, an open-source curses library hosted on
Linux and the BSD variants of Unix.
+.. note::
+
+ Since version 5.4, the ncurses library decides how to interpret non-ASCII data
+ using the ``nl_langinfo`` function. That means that you have to call
+ :func:`locale.setlocale` in the application and use one of the system's
+ available encodings to encode Unicode strings with it. This example uses the
+ system's default encoding::
+
+ import locale
+ locale.setlocale(locale.LC_ALL, '')
+ code = locale.getpreferredencoding()
+
+ Then use *code* as the encoding for :meth:`str.encode` calls.
.. seealso::