Quote:In 1.13 we are completely redesigning the command system to be easier to use, faster to run, and allow for much cooler things than were possible before. Todays snapshot introduces the first kinda-workable build of that command system!

Quote:CHANGES

• New horse model! Hurrah!
  
  
• Lots of bug fixes! Especially crash fixes on Mac OS.
  
  
• New command library! Details below.
  
  
• Added new GUI scaling options! 4k users rejoice, you can see a few more pixels now
  

[…]

COMMANDS

• Most commands are even more case sensitive than before. Lowercase is preferable wherever possible.
  
  
• For example, this is no longer allowed: 
  Code:

  /scoreboard ObJeCtIvEs ...
  
  
• They will be so much more faster and efficient. Especially functions. Oh man.
  
  
• Functions will be completely parsed & cached on load. This means if there’s any command that isn’t correct for whatever reason, you will know about it on load.
  
  
• This means to check if a map works in 1.17.banana, you simple open your world in 1.17.banana. If there’s errors, they’ll be in your log. If there’s no errors, it’s probably fine!
  
  
• Here’s a list of every single executable command so-far: https://gist.github.com/Dinnerbone/943fbcd763c19be188ed6b72a12d7e65
  
  
• It’s very verbose, because each line is its own command. 
  Code:

  [optionals]
  and 
  Code:

  (conditionals|ors)
   are separated out.
  
  
• Code:

  ...
   is where another command is required
  
  
• Code:

  -> foo
   means an alias to foo
  
  
• The new command library is called “Brigadier”. That’s not relevant in any way, I just really like the name.