# HG changeset patch
# User jruigrok
# Date 1298385788 0
# Node ID 4faca8f114084c8a33abac05c1a9718e7c029b1b
# Parent  90933fb8575300bd7be03c4ea6651b0a506b52f7
Merged revisions 549 via svnmerge from
http://svn.edgewall.org/repos/babel/trunk

........
  r549 | jruigrok | 2011-02-22 15:30:22 +0100 (di, 22 feb 2011) | 4 lines

  Prevent multiple handlers being attached to the same logger.

  Issue: #227
  Submitted by: dfraser
........

diff --git a/0.9.x/ChangeLog b/0.9.x/ChangeLog
--- a/0.9.x/ChangeLog
+++ b/0.9.x/ChangeLog
@@ -21,6 +21,7 @@
  * Removed ValueError raising for string formatting message checkers if the
    string does not contain any string formattings (ticket #150).
  * Fix Serbian plural forms (ticket #213).
+ * Prevent multiple handlers being added to the same logger (ticket #227).
 
 
 Version 0.9.5
diff --git a/0.9.x/babel/messages/frontend.py b/0.9.x/babel/messages/frontend.py
--- a/0.9.x/babel/messages/frontend.py
+++ b/0.9.x/babel/messages/frontend.py
@@ -629,11 +629,14 @@
         # Configure logging
         self.log = logging.getLogger('babel')
         self.log.setLevel(options.loglevel)
-        handler = logging.StreamHandler()
-        handler.setLevel(options.loglevel)
+        if self.log.handlers:
+            handler = self.log.handlers[0]
+        else:
+            handler = logging.StreamHandler()
+            self.log.addHandler(handler)
         formatter = logging.Formatter('%(message)s')
         handler.setFormatter(formatter)
-        self.log.addHandler(handler)
+        handler.setLevel(options.loglevel)
 
         if options.list_locales:
             identifiers = localedata.list()