diff --git a/mercurial/util.py b/mercurial/util.py
--- a/mercurial/util.py
+++ b/mercurial/util.py
@@ -128,10 +128,12 @@ def binary(s):
 def unique(g):
     """return the uniq elements of iterable g"""
     seen = {}
+    l = []
     for f in g:
         if f not in seen:
             seen[f] = 1
-            yield f
+            l.append(f)
+    return l
 
 class Abort(Exception):
     """Raised if a command needs to print an error and exit."""
@@ -985,6 +987,9 @@ def shortuser(user):
     f = user.find(' ')
     if f >= 0:
         user = user[:f]
+    f = user.find('.')
+    if f >= 0:
+        user = user[:f]
     return user
 
 def walkrepos(path):