--- a/mercurial/match.py	Tue Jun 07 12:10:01 2016 +0200
+++ b/mercurial/match.py	Tue Jun 14 11:53:55 2016 +0200
@@ -38,7 +38,7 @@
     for kind, pat, source in kindpats:
         if kind == 'set':
             if not ctx:
-                raise error.Abort("fileset expression with no context")
+                raise error.Abort(_("fileset expression with no context"))
             s = ctx.getfileset(pat)
             fset.update(s)