[28785] introduced a bug, where encoded query arguments were decoded by parse_str() inside of wp_parse_str() but never re-encoded later on.

This encodes them, adds unit test.

Props obenland.
Fixes #29636.


git-svn-id: https://develop.svn.wordpress.org/trunk@30133 602fd350-edb4-49c9-b593-d223f7449a82

src/wp-includes/general-template.php

@@ -2475,6 +2475,7 @@ function paginate_links( $args = '' ) {
 
 	if ( isset( $url_parts[1] ) ) {
 		wp_parse_str( $url_parts[1], $query_args );
+		$query_args = urlencode_deep( $query_args );
 	}
 
 	$pagenum_link = remove_query_arg( array_keys( $query_args ), $pagenum_link );