Plugins would indirectly trigger permissible recalculation too early in the login sequence, which then caused their permissions to be recalculated and subscribing them to the broadcast permission far too early.
This is better for performance because these then don't need to be reevaluated every time they are called.
When encountering an unqualified function or constant reference, PHP will first try to locate a symbol in the current namespace by that name, and then fall back to the global namespace.
This short-circuits the check, which has substantial performance effects in some cases - in particular, ord(), chr() and strlen() show ~1500x faster calls when they are fully qualified.
However, this doesn't mean that PM is getting a massive amount faster. In real world terms, this translates to about 10-15% performance improvement.
But before anyone gets excited, you should know that the CodeOptimizer in the PreProcessor repo has been applying fully-qualified symbol optimizations to Jenkins builds for years, which is one of the reasons why Jenkins builds have better performance than home-built or source installations.
We're choosing to do this for the sake of future SafePHP integration and also to be able to get rid of the buggy CodeOptimizer, so that phar and source are more consistent.
This was removed way back in 2016 because of an unidentified bug which caused permissible commands not to show up on the client. Back then, command parsing and validity checks were client-sided, and the client would simply not send the command at all if it didn't recognize it. Now, that problem is gone, so it doesn't matter as much if there are permission bugs which cause commands to be erroneously missing.
closes#2625
this bug has existed for so long I forgot it was still here. People stopped pestering me to do something about it, and as a result I forgot to do anything about it.
This hack isn't perfect, but it filters out the worst of the noise. It has side effects for legitimate fast double-clicks, but I don't think anyone will be too bothered - just click more slowly.
This hack may also have negative side effects on poor connections where latency spikes are a problem, but there isn't really much that can be done about that.
Always order chunks ASAP on chunk change, not just during the spawn sequence. This fixes the sluggishness observed in BlockSniper when doing async chunk modifications.
this technically involves non-breaking API changes which should happen on a patch release, but I can't be bothered with the dust cleanup, so we'll just blow it away now. It doesn't hurt anyone anyway.
