AceEvent-3.0 tricked into registering non-existent events??

[LudiusMaximus]

Originally Posted by myrroddin No matter which method is used, you are safe, and won't get errors.

It must be something about pcall() then.
Another even more minimal working example:

local folderName = ...
local myAddon = LibStub("AceAddon-3.0"):NewAddon(folderName, "AceEvent-3.0")
 
function myAddon:EventHandler(event)
  print("EventHandler not doing anything", event)
end
 
pcall(function() myAddon:RegisterEvent("Nonsense_Event", "EventHandler") end)
myAddon:UnregisterAllEvents()

Gives me this unregister error:

AceEvent-3.0-4.lua:37: Attempt to unregister unknown event "Nonsense_Event"

[myrroddin]

Originally Posted by LudiusMaximus AceEvent-3.0-4.lua:37: Attempt to unregister unknown event "Nonsense_Event"

If that is what you see for unknown events, then AceEvent is registering by table, a table that has a list of events assigned to the frame. It is the second method I suggested, not the first.

Clearly, AceEvent does not validate events before adding them to the frame's table. As per the thread's title, no, AceEvent is NOT being tricked into registering non-existent events. It is up to the addon author using AceEvent to do the validation, or simply never use events that don't exist. Which is what 99.9999999999% of authors do in their projects.

I can see why there is no validation in AceEvent. Considering the ever-increasing quantity of events, that would bloat AceEvent's code for no gain.

[LudiusMaximus]

Originally Posted by myrroddin If that is what you see for unknown events, then AceEvent is registering by table, a table that has a list of events assigned to the frame. It is the second method I suggested, not the first.

That's what I supposed, too. But the implementation of AceEvent-3.0.lua is really beyond me...
I cannot spot any point where it would seem to maintain such a table of registered events.

What really puzzles me is why there is the unregister error when I call RegisterEvent() with callback:

local myAddon = LibStub("AceAddon-3.0"):NewAddon(..., "AceEvent-3.0")
pcall(function() myAddon:RegisterEvent("NONSENSE_EVENT", function() end) end)
myAddon:UnregisterAllEvents()
-- Error: Attempt to unregister unknown event "NONSENSE_EVENT"

But no error message when I do it without callback:

local myAddon = LibStub("AceAddon-3.0"):NewAddon(..., "AceEvent-3.0")
pcall(function() myAddon:RegisterEvent("NONSENSE_EVENT") end)
myAddon:UnregisterAllEvents()
-- No error.

Thanks! Your help is really appreciated.

Originally Posted by myrroddin Please provide a working example.

An example is just that a user mistypes an event they want to register. The GUI looks like this: