Only force new slugs to lowercase when not URL_CASE_SENSITIVE

wiki/forms.py

@@ -256,6 +256,8 @@ class CreateForm(forms.Form, SpamProtectionMixin):
         if settings.URL_CASE_SENSITIVE:
             already_existing_slug = models.URLPath.objects.filter(slug=slug, parent=self.urlpath_parent)
         else:
+            slug = slug.lower()
+            slug = slug.replace('-', '_')
             already_existing_slug = models.URLPath.objects.filter(slug__iexact=slug, parent=self.urlpath_parent)
         if already_existing_slug:
             already_urlpath = already_existing_slug[0]
@@ -264,8 +266,6 @@ class CreateForm(forms.Form, SpamProtectionMixin):
             else:
                 raise forms.ValidationError(_(u'A slug named "%s" already exists.') % already_urlpath.slug)
         
-        slug = slug.lower()
-        slug = slug.replace('-', '_')
         return slug
     
     def clean(self):