WordPress Localization Impact - salcode/fe-sanitize-title-js GitHub Wiki
As discussed in Issue 1 Add German Umlauts, the results of
echo sanitize_title('Ä ä Ö ö Ü ü ß');
varies based on the current language WordPress is using.
Specifically, when using English (United States)
as the Site Language, the result is
a-a-o-o-u-u-s
when using German
, the result is
ae-ae-oe-oe-ue-ue-ss
For now at least, the plan is for this plugin to match the behavior of sanitize_title()
when the Site Language English (United States)
is being used.