add l10n and added reserved tag list

test/corpus/custom.txt

@@ -229,3 +229,58 @@ Builtin Filter With An Argument It Does Not Take
 {{ x|length:2 }}
 
 ---
+
+==================
+Custom Tag Does Not Cover An End Tag
+:error
+==================
+
+{% endif %}
+
+---
+
+
+==================
+Custom Tag Does Not Cover A Part Of A Tag Group
+:error
+==================
+
+{% else %}
+
+---
+
+
+==================
+A Name Reserved For A Tag Is Still A Variable
+==================
+
+{{ endif }}
+
+---
+
+(template
+  (content)
+  (template_variable
+    (filtered_value
+      (value
+        (variable_attribute
+          (identifier)))))
+  (content))
+
+==================
+A Name Reserved For A Tag Is Still An Argument
+==================
+
+{% mytag endif %}
+
+---
+
+(template
+  (content)
+  (custom_tag
+    tag: (identifier)
+    (filtered_value
+      (value
+        (variable_attribute
+          (identifier)))))
+  (content))

test/corpus/ifchanged.txt

@@ -39,3 +39,132 @@ content
     (template
       (content)))
   (content))
+
+==================
+Ifchanged With Else
+==================
+
+{% ifchanged %}
+content
+{% else %}
+unchanged
+{% endifchanged %}
+
+---
+
+(template
+  (content)
+  (ifchanged_group
+    (template
+      (content))
+    (template
+      (content)))
+  (content))
+
+==================
+Ifchanged With Values And Else
+==================
+
+{% ifchanged x y|upper %}
+content
+{% else %}
+unchanged
+{% endifchanged %}
+
+---
+
+(template
+  (content)
+  (ifchanged_group
+    (filtered_value
+      (value
+        (variable_attribute
+          (identifier))))
+    (filtered_value
+      (value
+        (variable_attribute
+          (identifier)))
+      (filter_expression
+        (filter)))
+    (template
+      (content))
+    (template
+      (content)))
+  (content))
+
+==================
+Ifchanged With An Empty Else
+==================
+
+{% ifchanged %}
+content
+{% else %}{% endifchanged %}
+
+---
+
+(template
+  (content)
+  (ifchanged_group
+    (template
+      (content)))
+  (content))
+
+==================
+Ifchanged Nested In The Else Of Another
+==================
+
+{% ifchanged %}
+a
+{% else %}
+{% ifchanged %}
+b
+{% else %}
+c
+{% endifchanged %}
+{% endifchanged %}
+
+---
+
+(template
+  (content)
+  (ifchanged_group
+    (template
+      (content))
+    (template
+      (content)
+      (ifchanged_group
+        (template
+          (content))
+        (template
+          (content)))
+      (content)))
+  (content))
+
+==================
+Ifchanged With Two Elses
+:error
+==================
+
+{% ifchanged %}
+a
+{% else %}
+b
+{% else %}
+c
+{% endifchanged %}
+
+---
+
+
+==================
+Ifchanged With An Argument On Else
+:error
+==================
+
+{% ifchanged %}
+a
+{% else x %}
+b
+{% endifchanged %}
+
+---

test/corpus/l10n.txt

@@ -0,0 +1,163 @@
+==================
+Localize
+==================
+
+{% localize %}x{% endlocalize %}
+
+---
+
+(template
+  (content)
+  (localize_group
+    (template
+      (content)))
+  (content))
+
+==================
+Localize On
+==================
+
+{% localize on %}x{% endlocalize %}
+
+---
+
+(template
+  (content)
+  (localize_group
+    (template
+      (content)))
+  (content))
+
+==================
+Localize Off
+==================
+
+{% localize off %}x{% endlocalize %}
+
+---
+
+(template
+  (content)
+  (localize_group
+    (template
+      (content)))
+  (content))
+
+==================
+Localize Hugging Its Delimiters
+==================
+
+{%localize%}x{%endlocalize%}
+
+---
+
+(template
+  (content)
+  (localize_group
+    (template
+      (content)))
+  (content))
+
+==================
+Localize Nested
+==================
+
+{% localize on %}{% localize off %}y{% endlocalize %}{% endlocalize %}
+
+---
+
+(template
+  (content)
+  (localize_group
+    (template
+      (localize_group
+        (template
+          (content)))))
+  (content))
+
+==================
+Localize With Another Argument
+:error
+==================
+
+{% localize maybe %}x{% endlocalize %}
+
+---
+
+
+==================
+Localize With Two Arguments
+:error
+==================
+
+{% localize on off %}x{% endlocalize %}
+
+---
+
+
+==================
+Localize Unclosed
+:error
+==================
+
+{% localize %}
+
+---
+
+
+==================
+Localize Filter
+==================
+
+{{ x|localize }}
+
+---
+
+(template
+  (content)
+  (template_variable
+    (filtered_value
+      (value
+        (variable_attribute
+          (identifier)))
+      (filter_expression
+        (filter))))
+  (content))
+
+==================
+Unlocalize Filter
+==================
+
+{{ x|unlocalize }}
+
+---
+
+(template
+  (content)
+  (template_variable
+    (filtered_value
+      (value
+        (variable_attribute
+          (identifier)))
+      (filter_expression
+        (filter))))
+  (content))
+
+==================
+Localize Filter With An Argument
+:error
+==================
+
+{{ x|localize:1 }}
+
+---
+
+
+==================
+Unlocalize Filter With An Argument
+:error
+==================
+
+{{ x|unlocalize:1 }}
+
+---