Use angle brackets to prevent formatting problems

tools/include/operation.hpp

@@ -11,13 +11,13 @@
 
 namespace rtg {
 
-{%
+<%
 interface('operation',
     virtual('name', returns='std::string', const=True),
     virtual('compute_shape', returns='shape', input='std::vector<shape>', const=True),
     virtual('compute', returns='argument', input='std::vector<argument>', const=True)
 )
-%}
+%>
 
 } // namespace rtg
 

tools/te.py

@@ -231,8 +231,8 @@ def interface(name, *members):
     return generate_form(name, members)
 
 def template_eval(template,**kwargs):
-    start = '{%'
-    end = '%}'
+    start = '<%'
+    end = '%>'
     escaped = (re.escape(start), re.escape(end))
     mark = re.compile('%s(.*?)%s' % escaped, re.DOTALL)
     for key in kwargs: