Re: Error handling with pipmak.getimage/pipmak.newimage

[Christian W. <cwa...@gm...>]

Andrea Viarengo wrote:
> is there a reason why standard lua error handling functions doesn't work with
> pipmak.getimage/pipmak.newimage?

I don't think there is a particular reason, except that it has historically
evolved that way.

> I.e. in the code:
> 
> local success,errcode = pcall(function() pipmak.getimage("test.png") end)
> 
> variable success is always true both is test.png exists or not, 
> and an error message is printed out!!
> 
> I would like to have a behaviour like this (in pseudo-code):
> 
>     if image1 exists then
>       load image1
>     else
>       load image2
>     end
> 
> and, off course, without any error message printing!

I agree that this could be useful.

What's important is that when you write

patch { image = "test.png" }

and test.png doesn't exist, that shouldn't cause the whole node loading
operation to fail, but load the "question mark" image instead and print a
warning. It seems to me that this could still be achieved with a getimage()
that uses standard Lua error handling, so I currently see no reason not to
change it.

 -Christian