wp-admin/includes/upgrade.php:2082Executes changes made in WordPress 4.3.1.
function upgrade_431() { // Fix incorrect cron entries for term splitting. $cron_array = _get_cron_array(); if ( isset( $cron_array['wp_batch_split_terms'] ) ) { unset( $cron_array['wp_batch_split_terms'] ); _set_cron_array( $cron_array ); }}Introduced in 4.3.1. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-admin/includes/upgrade.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.