Problem assigning tags

[Colics]

I've made tags with initial letters ...
So i have two tags "S" and "Š" (slug "s" and "s-2").
When I try to add the tag "Š" in the post, after I save the post WP, I tag "S" instead of "Š"?
Is this a mistake or how can I fix my problem by adding the tag I want?

The same problem is with letters

• C, Č and Ć
• Z and Ž

[Colics]

Solution
in file wp-includes/taxonomy.php

function term_exists( $term, $taxonomy = , $parent = null ) {
...
change line
$orderby = 'ORDER BY t.term_id ASC';
with line
$orderby = 'ORDER BY CASE WHEN hex(t.name) = hex(%s) THEN 0 ELSE 1 END, t.term_id ASC';

How does this work?
If he finds 100% equal, return it to the first one, if not then still according to the second criterion, ie. t.term_id ASC

[sabernhardt]

@Colics Thanks for suggesting a solution.

Please add that comment to the original ticket #47339 so all history for this issue stays on one ticket. I'll update the description there to match this one.

[Colics]

Is this planned to be done?