#10092: Properly reset locale in Locale*Calendar classes. The context manager was buggy because setlocale() returns the *new* locale, not the old. Also add a test for this.

1 files changed, 9 insertions, 3 deletions

diff --git a/Doc/library/calendar.rst b/Doc/library/calendar.rst
index 2228920..c8dac49 100644
--- a/Doc/library/calendar.rst
+++ b/Doc/library/calendar.rst
@@ -170,9 +170,9 @@ it's the base calendar for all computations.
 .. class:: LocaleTextCalendar(firstweekday=0, locale=None)
 
    This subclass of :class:`TextCalendar` can be passed a locale name in the
-   constructor and will return month and weekday names in the specified
-   locale. If this locale includes an encoding all strings containing month and
-   weekday names will be returned as unicode.
+   constructor and will return month and weekday names in the specified locale.
+   If this locale includes an encoding all strings containing month and weekday
+   names will be returned as unicode.
 
 
 .. class:: LocaleHTMLCalendar(firstweekday=0, locale=None)
@@ -182,6 +182,12 @@ it's the base calendar for all computations.
    locale. If this locale includes an encoding all strings containing month and
    weekday names will be returned as unicode.
 
+.. note::
+
+   The :meth:`formatweekday` and :meth:`formatmonthname` methods of these two
+   classes temporarily change the current locale to the given *locale*.  Because
+   the current locale is a process-wide setting, they are not thread-safe.
+
 
 For simple text calendars this module provides the following functions.