I have a simple 16x24 indexed sprite. But when I output the sprite’s size in Lua (app.activeCel.image.width/height), the script shows the width as 13px, not 16.
I noticed that when I hold the Cmd key, I see a little rectangle around my sprite that is only 13px. I don’t know what that is, but that might be why the script is reporting 13px as the width.
How can I get the “full” sprite’s pixels in the script?