Added support for an 'origin' template tag which will insert the name of the template file (within a html comment) into the page content when TEMPLATE_DEBUG is True; with the purpose of more easily being able to identify the templates from which page content comes.

- Legacy-Id: 9550

ietf/utils/templatetags/origin.py

@@ -0,0 +1,27 @@
+from django import template
+import debug                            # pyflakes:ignore
+
+register = template.Library()
+
+
+class OriginNode(template.Node):
+    def __init__(self, origin=None):
+        # template file path if the template comes from a file:
+        self.origin = origin
+
+    def render(self, context):
+        if self.origin:
+            return "<!-- template: %s -->" % self.origin
+        else:
+            return ""
+
+@register.tag
+def origin(parser, token):
+    """
+    Returns a node which renders the 
+    """
+    if hasattr(token, "source"):
+        origin, source = token.source
+        return OriginNode(origin=origin)
+    else:
+        return OriginNode()