# HG changeset patch
# User Matt Mackall <mpm@selenic.com>
# Date 1167444271 21600
# Node ID 3297aa945cf2d5a19c981b781220cb352aa1fcbe
# Parent  0b740dcf0cf1a0304db330d6ebecd84c97afd087
symlinks: add a linkfunc

diff --git a/mercurial/util.py b/mercurial/util.py
--- a/mercurial/util.py
+++ b/mercurial/util.py
@@ -725,6 +725,12 @@ def checksymlink(path):
     except OSError:
         return False
 
+def linkfunc(path, fallback):
+    '''return an is_link() function with default to fallback'''
+    if checklink(path):
+        return lambda x: is_link(os.path.join(path, x))
+    return fallback
+
 # Platform specific variants
 if os.name == 'nt':
     import msvcrt