[PATCH 1 of 2] cmdutil: mark string for i18n

[Wagner Bruna]

# HG changeset patch
# User Wagner Bruna <wbruna at softwareexpress.com.br>
# Date 1287584981 7200
# Node ID 0881a6a2f0c97d974e568d70c5963cfc3b9bb44f
# Parent  c3316b6a32198a2a8257691a1233a9231222e503
cmdutil: mark string for i18n

diff --git a/mercurial/cmdutil.py b/mercurial/cmdutil.py
--- a/mercurial/cmdutil.py
+++ b/mercurial/cmdutil.py
@@ -117,7 +117,7 @@ def revsingle(repo, revspec, default='.'
 
     l = revrange(repo, [revspec])
     if len(l) < 1:
-        raise util.Abort("empty revision set")
+        raise util.Abort(_('empty revision set'))
     return repo[l[-1]]
 
 def revpair(repo, revs):