wp-admin/includes/export.php:326Outputs a tag_description XML tag from a given tag object.
$tagWP_Term function wxr_tag_description( $tag ) { if ( empty( $tag->description ) ) { return; } echo '<wp:tag_description>' . wxr_cdata( $tag->description ) . "</wp:tag_description>\n"; }Introduced in 2.3.0. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-admin/includes/export.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.