regular expression.  Deprecation warning is emitted if uses them in the
middle of the regular expression.

And most of the tools.

Patch by Emanual Barry, reviewed by me, Serhiy Storchaka, and
Martin Panter.

Updated to solution to use the functools.lru_cache().
Restores the API so that purge() is not needed
(because the cache never gets big).

Partially closes issue 9356. Thanks to Brian Brazil for the patch.

svn+ssh://pythondev@svn.python.org/python/branches/release27-maint

................
  r82769 | r.david.murray | 2010-07-10 10:06:51 -0400 (Sat, 10 Jul 2010) | 15 lines

  Merged revisions 82766 via svnmerge from
  svn+ssh://pythondev@svn.python.org/python/branches/py3k

  Since 'purge' is an API change, modified it to be _purge for 2.x
  and deleted the doc update.

  ........
    r82766 | r.david.murray | 2010-07-10 09:52:13 -0400 (Sat, 10 Jul 2010) | 5 lines

    Fix 'refleak' introduced by fnmatch cache purge tests.

    This introduces a 'purge' function for the fnmatch module analogous
    to the 'purge' function in the re module.
  ........
................

svn+ssh://pythondev@svn.python.org/python/branches/py3k

Since 'purge' is an API change, modified it to be _purge for 2.x
and deleted the doc update.

........
  r82766 | r.david.murray | 2010-07-10 09:52:13 -0400 (Sat, 10 Jul 2010) | 5 lines

  Fix 'refleak' introduced by fnmatch cache purge tests.

  This introduces a 'purge' function for the fnmatch module analogous
  to the 'purge' function in the re module.
........

svn+ssh://pythondev@svn.python.org/python/branches/py3k

Since 'purge' is an API change, modified it to be _purge for 3.1
and deleted the doc update.

........
  r82766 | r.david.murray | 2010-07-10 09:52:13 -0400 (Sat, 10 Jul 2010) | 5 lines

  Fix 'refleak' introduced by fnmatch cache purge tests.

  This introduces a 'purge' function for the fnmatch module analogous
  to the 'purge' function in the re module.
........

This introduces a 'purge' function for the fnmatch module analogous
to the 'purge' function in the re module.

svn+ssh://pythondev@svn.python.org/python/branches/release27-maint

................
  r82732 | r.david.murray | 2010-07-09 09:16:00 -0400 (Fri, 09 Jul 2010) | 13 lines

  Merged revisions 82730 via svnmerge from
  svn+ssh://pythondev@svn.python.org/python/branches/py3k

  'merge' in the sense that this is the same fix by the same author.

  ........
    r82730 | r.david.murray | 2010-07-09 08:23:21 -0400 (Fri, 09 Jul 2010) | 4 lines

    7846: limit fnmatch pattern cache to _MAXCACHE=100 entries.

    Patch by Andrew Clegg.
  ........
................
  r82734 | r.david.murray | 2010-07-09 09:17:45 -0400 (Fri, 09 Jul 2010) | 9 lines

  Merged revisions 82731 via svnmerge from
  svn+ssh://pythondev@svn.python.org/python/branches/py3k

  ........
    r82731 | r.david.murray | 2010-07-09 09:14:03 -0400 (Fri, 09 Jul 2010) | 2 lines

    Fix sort order mistake in Misc/ACKS.
  ........
................
  r82738 | r.david.murray | 2010-07-09 09:25:56 -0400 (Fri, 09 Jul 2010) | 2 lines

  Add missing NEWS entry for 7646.
................

svn+ssh://pythondev@svn.python.org/python/branches/py3k

........
  r82730 | r.david.murray | 2010-07-09 08:23:21 -0400 (Fri, 09 Jul 2010) | 4 lines

  7846: limit fnmatch pattern cache to _MAXCACHE=100 entries.

  Patch by Andrew Clegg.
........
  r82731 | r.david.murray | 2010-07-09 09:14:03 -0400 (Fri, 09 Jul 2010) | 2 lines

  Fix sort order mistake in Misc/ACKS.
........

svn+ssh://pythondev@svn.python.org/python/branches/py3k

'merge' in the sense that this is the same fix by the same author.

........
  r82730 | r.david.murray | 2010-07-09 08:23:21 -0400 (Fri, 09 Jul 2010) | 4 lines

  7846: limit fnmatch pattern cache to _MAXCACHE=100 entries.

  Patch by Andrew Clegg.
........

Patch by Andrew Clegg.

svn+ssh://pythondev@svn.python.org/python/branches/py3k

................
  r74476 | gregory.p.smith | 2009-08-16 11:58:46 -0700 (Sun, 16 Aug 2009) | 9 lines

  Merged revisions 74475 via svnmerge from
  svn+ssh://pythondev@svn.python.org/python/trunk

  ........
    r74475 | gregory.p.smith | 2009-08-16 11:52:58 -0700 (Sun, 16 Aug 2009) | 2 lines

    Issue 6665: Fix fnmatch to properly match filenames with newlines in them.
  ........
................

svn+ssh://pythondev@svn.python.org/python/trunk

........
  r74475 | gregory.p.smith | 2009-08-16 11:52:58 -0700 (Sun, 16 Aug 2009) | 2 lines

  Issue 6665: Fix fnmatch to properly match filenames with newlines in them.
........

svn+ssh://pythondev@svn.python.org/python/trunk

........
  r74475 | gregory.p.smith | 2009-08-16 11:52:58 -0700 (Sun, 16 Aug 2009) | 2 lines

  Issue 6665: Fix fnmatch to properly match filenames with newlines in them.
........

This is necessary to pass the tests with -bb.

Stinner, with small tweaks by GvR.

(Contributed by George Yoshida.)

Patch to make "\" in a character group work properly.

This closes SF bug #409651.