# HG changeset patch
# User FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
# Date 2016-03-10 19:14:54
# Node ID d749b1832d2f4d0c3512cfb16242aef1e0ba4af7
# Parent  12fdf49fa4dddb361609520f541b1b420dc8d36a

revset: remove useless extpredicate class (API)

Previous patch makes this classes useless by replacing it with
revsetpredicate of registrar.

BTW, extpredicate itself has already been broken by that patch,
because revsetpredicate of registrar doesn't have compatibility with
original predicate (derived from funcregistrar of registrar), in fact.

diff --git a/mercurial/revset.py b/mercurial/revset.py
--- a/mercurial/revset.py
+++ b/mercurial/revset.py
@@ -484,28 +484,6 @@ safesymbols = set()
 
 predicate = registrar.revsetpredicate()
 
-class extpredicate(registrar.delayregistrar):
-    """Decorator to register revset predicate in extensions
-
-    Usage::
-
-        revsetpredicate = revset.extpredicate()
-
-        @revsetpredicate('mypredicate(arg1, arg2[, arg3])')
-        def mypredicatefunc(repo, subset, x):
-            '''Explanation of this revset predicate ....
-            '''
-            pass
-
-        def uisetup(ui):
-            revsetpredicate.setup()
-
-    'revsetpredicate' instance above can be used to decorate multiple
-    functions, and 'setup()' on it registers all such functions at
-    once.
-    """
-    registrar = predicate
-
 @predicate('_destupdate')
 def _destupdate(repo, subset, x):
     # experimental revset for update destination