# --- Fix duplicate path segments like /x/x/ -> /x/ ---
<IfModule mod_rewrite.c>
RewriteEngine On

# If the request path ends with a segment repeated twice, redirect to a single one
RewriteCond %{REQUEST_URI} ^(.*/[^/]+)/\1/?$ [NC]
RewriteRule ^ %1/ [R=301,L]
</IfModule>