The argument has been technically optional and omitting it means no authorisation at all, which is how an endpoint intended for the admin ends up readable by anyone…
Offering an alternative appearance for an existing block does not need a new block, a build step or any JavaScript — it needs a registration and a CSS…
WordPress’s scheduler is a table of events run opportunistically on page loads, and a site that has had thirty plugins over ten years has entries pointing at functions…
WordPress has no concept of an environment, so every site invents one — and the versions differ enough that a shared plugin cannot rely on any of them.…
3.6 added lookup tables, which is WooCommerce admitting postmeta does not scale. What they contain, what they do not, and the regeneration nobody schedules.