# HG changeset patch
# User cmlenz
# Date 1172070917 0
# Node ID 8c2679f4000e012f7ee99c9ab87e4e49b0c97fd5
# Parent  4675d5cf6c67d7b1c1b39dc0b5fdfa544c21ccab
Simplify `defined` function provided by template engine plugin.

diff --git a/genshi/template/plugin.py b/genshi/template/plugin.py
--- a/genshi/template/plugin.py
+++ b/genshi/template/plugin.py
@@ -21,7 +21,6 @@
 from genshi.input import ET, HTML, XML
 from genshi.output import DocType
 from genshi.template.base import Context, Template
-from genshi.template.eval import Undefined
 from genshi.template.loader import TemplateLoader
 from genshi.template.markup import MarkupTemplate
 from genshi.template.text import TextTemplate
@@ -98,7 +97,7 @@
 
         # Some functions for Kid compatibility
         def defined(name):
-            return ctxt.get(name, Undefined) is not Undefined
+            return name in ctxt
         ctxt['defined'] = defined
         def value_of(name, default=None):
             return ctxt.get(name, default)