diff -r 867c3649be5d -r 6ddc86eedc3b mercurial/bookmarks.py
--- a/mercurial/bookmarks.py	Fri Mar 13 14:20:13 2015 -0400
+++ b/mercurial/bookmarks.py	Fri Mar 13 17:00:06 2015 -0400
@@ -435,7 +435,10 @@
 
     diff = sorted(set(smarks) - set(dmarks))
     for k in diff:
-        mark = ui.debugflag and smarks[k] or smarks[k][:12]
+        if ui.debugflag:
+            mark = smarks[k]
+        else:
+            mark = smarks[k][:12]
         ui.write("   %-25s %s\n" % (k, mark))
 
     if len(diff) <= 0: