Merged revisions 87238 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/branches/py3k

........
  r87238 | r.david.murray | 2010-12-14 11:20:53 -0500 (Tue, 14 Dec 2010) | 7 lines

  #775964: skip YP/NIS entries instead of failing the test

  Also includes doc updates mentioning that these entries may not
  be retrievable via getgrnam and getgrgid.

  Patch by Bobby Impollonia.
........
diff --git a/Doc/library/grp.rst b/Doc/library/grp.rst
index a71c308..f20a212 100644
--- a/Doc/library/grp.rst
+++ b/Doc/library/grp.rst
@@ -31,7 +31,9 @@
 The gid is an integer, name and password are strings, and the member list is a
 list of strings. (Note that most users are not explicitly listed as members of
 the group they are in according to the password database.  Check both databases
-to get complete membership information.)
+to get complete membership information.  Also note that a ``gr_name`` that
+starts with a ``+`` or ``-`` is likely to be a YP/NIS reference and may not be
+accessible via :func:`getgrnam` or :func:`getgrgid`.)
 
 It defines the following items: