diff -r 72e4fcb43227 -r 1b8c70c9f47c mercurial/dispatch.py
--- a/mercurial/dispatch.py	Sat Jun 25 02:30:24 2011 +0200
+++ b/mercurial/dispatch.py	Fri Jun 24 12:16:14 2011 +0300
@@ -592,14 +592,12 @@
                 (t[4]-s[4], t[0]-s[0], t[2]-s[2], t[1]-s[1], t[3]-s[3]))
         atexit.register(print_time)
 
-    if options['verbose'] or options['debug'] or options['quiet']:
-        for ui_ in (ui, lui):
-            ui_.setconfig('ui', 'verbose', str(bool(options['verbose'])))
-            ui_.setconfig('ui', 'debug', str(bool(options['debug'])))
-            ui_.setconfig('ui', 'quiet', str(bool(options['quiet'])))
-    if options['traceback']:
-        for ui_ in (ui, lui):
-            ui_.setconfig('ui', 'traceback', 'on')
+    for opt in ('verbose', 'debug', 'quiet', 'traceback'):
+        val = bool(options[opt])
+        if val:
+            for ui_ in (ui, lui):
+                ui_.setconfig('ui', opt, str(val))
+
     if options['noninteractive']:
         for ui_ in (ui, lui):
             ui_.setconfig('ui', 'interactive', 'off')