wp-includes/blocks.php:1731Returns the block name to use for serialization. This will remove the default "core/" namespace from a block name.
$block_namestring|nulloptionalnullstringfunction strip_core_block_namespace( $block_name = null ) { if ( is_string( $block_name ) && str_starts_with( $block_name, 'core/' ) ) { return substr( $block_name, 5 ); } return $block_name;}Introduced in 5.3.1. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-includes/blocks.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.