how to `lily.quit()` on `love.errorhandler`?

[mikuauahdark]

how to `lily.quit()` on `love.errorhandler`?

[banepwn]

love.errorhandler is supposed to return a function. When detouring it, you need to make sure your function returns the same values as the old one. Do return old_errorhandler(msg).

[gphg]

I somehow managed to get it right without completely rewrite the errorhandler.

-- cache the function
local old_errorhandler = love.errorhandler
function love.errorhandler(msg)
	-- quit lily before original errorhandler get called
	local lily = package['lily'] or package['libs.lily'] or package['path.to.lily'] or nil
	if lily then 
		lily.quit()
	end
	-- call original cached errorhandler function
	old_errorhandler(msg)
end

[gphg]

Above solution doesn't work. On unexpected error, the program simply quits without tell any error. I had to uncomment it.

[gphg]

I debug it, and it seems the old errorhandler is nil.

Updated:
I'm on latest stable version. And it is love.errhand, not love.errorhandler. But the wiki page says otherwise. :/

-- Something like this:
local old_errorhandler = love.errorhandler or love.errhand
function love.errorhandler(msg)
	lilyQuit() -- a defined function somewhere to call lily.quit
	return old_errorhandler(msg)
end

[banepwn]

That's because LÖVE's default error handler is actually in love.errhand. In the event of an error, LÖVE will check if love.errorhandler exists first, and then love.errhand if it doesn't, then a third inaccessible function if neither exist.

[gphg]

https://love2d.org/wiki/love.errhand

Closing this issue.