Allow supybot.directories.backup to be /dev/null.

src/conf.py

@@ -763,7 +763,8 @@ registerGlobalValue(supybot.directories, 'data',
     Directory('data', _("""Determines what directory data is put into.""")))
 registerGlobalValue(supybot.directories, 'backup',
     Directory('backup', _("""Determines what directory backup data is put
-    into.""")))
+    into. Set it to /dev/null (this is a special value; it is a special value,
+    so it also works on Windows and systems without /dev/null).""")))
 registerGlobalValue(supybot.directories.data, 'tmp',
     DataFilenameDirectory('tmp', _("""Determines what directory temporary files
     are put into.""")))

src/utils/file.py

@@ -171,7 +171,8 @@ class AtomicFile(file):
             if newSize or self.allowEmptyOverwrite or not originalExists:
                 if originalExists:
                     oldSize = os.path.getsize(self.filename)
-                    if self.makeBackupIfSmaller and newSize < oldSize:
+                    if self.makeBackupIfSmaller and newSize < oldSize and \
+                            self.backupDir != '/dev/null':
                         now = int(time.time())
                         backupFilename = '%s.backup.%s' % (self.filename, now)
                         if self.backupDir is not None:

src/version.py

@@ -1,3 +1,3 @@
 """stick the various versioning attributes in here, so we only have to change
 them once."""
-version = '0.83.4.1+limnoria (2012-03-15T12:44:43+0000)'
+version = '0.83.4.1+limnoria (2012-03-15T19:22:46+0000)'