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Networks and Sites: Officially remove global terms.

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Global terms was a feature from the WordPress MU days where multisite and single site installs used different code bases.

In WordPress 3.0, WordPress MU was merged into one location and the UI [14854] and “on” switch [14880] for global terms were completely removed.

Even before this merge, global terms was bug infested and unreliable. After [14854]/[14880], the feature was no longer maintained and became increasingly broken as taxonomies progressed without it (term splitting and term meta do not work at all). At this point, the feature has not worked in 12+ years and there’s no hope for saving it.

This deprecates the remaining global terms related code and no-ops the functions.

Global terms, you don’t have to go home, but you can’t stay here.

Props scribu, wonderboymusic, SergeyBiryukov, nacin, pento, desrosj, johnjamesjacoby, johnbillion, dd32.
Fixes #21734.

git-svn-id: https://develop.svn.wordpress.org/trunk@54240 602fd350-edb4-49c9-b593-d223f7449a82
This commit is contained in:
Jonathan Desrosiers
2022-09-20 02:49:25 +00:00
parent f2f99f3985
commit 7a6ba32941
15 changed files with 82 additions and 216 deletions
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35
src/wp-includes/functions.php
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@@ -6219,41 +6219,6 @@ function get_main_network_id() {
return (int) apply_filters( 'get_main_network_id', $main_network_id );
}
/**
* Determines whether global terms are enabled.
*
* @since 3.0.0
*
* @return bool True if multisite and global terms enabled.
*/
function global_terms_enabled() {
if ( ! is_multisite() ) {
return false;
}
static $global_terms = null;
if ( is_null( $global_terms ) ) {
/**
* Filters whether global terms are enabled.
*
* Returning a non-null value from the filter will effectively short-circuit the function
* and return the value of the 'global_terms_enabled' site option instead.
*
* @since 3.0.0
*
* @param null $enabled Whether global terms are enabled.
*/
$filter = apply_filters( 'global_terms_enabled', null );
if ( ! is_null( $filter ) ) {
$global_terms = (bool) $filter;
} else {
$global_terms = (bool) get_site_option( 'global_terms_enabled', false );
}
}
return $global_terms;
}
/**
* Determines whether site meta is enabled.
*