call them helpers; templatetags collides with django

docs/ref/jingo.rst

@@ -55,5 +55,5 @@ These filters are injected into all templates automatically.  Template filters
 are what Jinja uses instead of "helpers" in other systems.  They're just
 functions that get called from templates using the ``|`` (pipe) syntax.
 
-.. automodule:: jingo.templatetags
+.. automodule:: jingo.helpers
     :members:

lib/jingo/__init__.py

@@ -38,10 +38,11 @@ def render(request, template, context=None, **kwargs):
     return http.HttpResponse(rendered, **kwargs)
 
 
-def load_template_tags():
+def load_helpers():
+    """Try to import ``helpers.py`` from each app in INSTALLED_APPS."""
     for app in settings.INSTALLED_APPS:
         try:
-            __import__('%s.templatetags' % app)
+            __import__('%s.helpers' % app)
         except ImportError:
             pass
 
@@ -65,5 +66,5 @@ env = get_env()
 register = Register(env)
 
 # Import down here after the env is initialized.
-from . import templatetags
-load_template_tags()
+from . import helpers
+load_helpers()

lib/jingo/helpers.py

@@ -34,7 +34,7 @@ def datetime(t, format=_('%B %d, %Y')):
 
 
 @register.filter
-def selected(a, b, text='selected'):
+def ifeq(a, b, text):
     """Return ``text`` if ``a == b``."""
     return jinja2.Markup(text if a == b else '')
 
@@ -42,4 +42,4 @@ def selected(a, b, text='selected'):
 @register.filter
 def class_selected(a, b):
     """Return ``'class="selected"'`` if ``a == b``."""
-    return selected(a, b, 'class="selected"')
+    return ifeq(a, b, 'class="selected"')