Default to ASCII as the locale.getpreferredencoding, if the POSIX
system doesn't support CODESET and LANG isn't set or doesn't
allow deduction of an encoding.
diff --git a/Lib/locale.py b/Lib/locale.py
index ce0ca81..448b018 100644
--- a/Lib/locale.py
+++ b/Lib/locale.py
@@ -505,7 +505,11 @@
def getpreferredencoding(do_setlocale = True):
"""Return the charset that the user is likely using,
by looking at environment variables."""
- return getdefaultlocale()[1]
+ res = getdefaultlocale()[1]
+ if res is None:
+ # LANG not set, default conservatively to ASCII
+ res = 'ascii'
+ return res
else:
def getpreferredencoding(do_setlocale = True):
"""Return the charset that the user is likely using,
diff --git a/Misc/NEWS b/Misc/NEWS
index 79bdef6..84b3d3a 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -14,6 +14,13 @@
- Use wchar_t functions in _locale module.
+Library
+-------
+
+- Default to ASCII as the locale.getpreferredencoding, if the POSIX
+ system doesn't support CODESET and LANG isn't set or doesn't
+ allow deduction of an encoding.
+
What's New in Python 3.0a3?
===========================