This is a cartoon I watched on English TV about a decade ago, maybe more. I have no idea when it was released but it can't have been much earlier than 1990, as the animation looked fairly modern. I don't think I caught the start of it and the only bit I clearly remember is the climax, but I'll try and describe that in as much detail as I can.
This was definitely a Donald Duck cartoon, or at least, Donald Duck was a major character in it. There was another duck character as well (a male), and by the climax of the cartoon this second duck had, for reasons I can't remember, become suicidally depressed. He erases himself with a pencil eraser, effectively committing suicide, but Donald Duck rushes over and uses the same pencil to draw him back into existence.
There then follows a brief tug-of-war, with the duck erasing himself and Donald re-drawing him again, until the duck angrily tells Donald to knock it off (I'm paraphrasing here). I don't really remember what happens after that, but I think Donald gathers the rest of the cartoon's cast and together they do something that restores the duck's will to live.
I'm not sure about this, but I vaguely recall that the altercation with the pencil takes place on a film set, or some other place with a lot of equipment - it's possible that the animation used the same "cartoon-characters-as-actors" conceit as "Who Framed Roger Rabbit". It may also have used live-action backgrounds, but I may be remembering it wrong.
I really hope this is enough for someone to identify it, because it's been bugging me for a little while now.
