# HG changeset patch
# User Jeff Hammel <jhammel@mozilla.com>
# Date 1294452861 28800
# Node ID d16823fd8c4a587e394366146d725df16b6160e6
# Parent  3db48fdc6be3ce7a3669b368526b244500b5dc54
check for subclassing, not instance of

diff -r 3db48fdc6be3 -r d16823fd8c4a makeitso/template.py
--- a/makeitso/template.py	Fri Jan 07 18:11:29 2011 -0800
+++ b/makeitso/template.py	Fri Jan 07 18:14:21 2011 -0800
@@ -54,7 +54,7 @@
     names = set()
     retval = []
     for arg in args:
-        if isinstance(arg, MakeItSoTemplate):
+        if issubclass(arg, MakeItSoTemplate):
             arg = arg.vars
         for variable in arg:
             if variable.name in names: