Let checks properly work on plural translations

trans/checks.py

@@ -2,9 +2,21 @@ from django.utils.translation import ugettext_lazy as _
 
 CHECKS = {}
 
-def check_same(sources, targets):
-    if sources[0] == targets[0]:
-        return True
-    return False
+def plural_check(f):
+    def _plural_check(sources, targets):
+        if f(sources[0], targets[0]):
+            return True
+        if len(sources) == 1:
+            return False
+        for t in targets[1:]:
+            if f(sources[1], t):
+                return True
+        return False
+
+    return _plural_check
+
+@plural_check
+def check_same(source, target):
+    return (source == target)
 
 CHECKS['same'] = (_('Not translated'), check_same, _('Source and translated strings are same'))