Comment 58 for bug 209695

Yes, I'm proposing that the behaviour we are trying to guard against is people unintentionally saving files to temp storage. So it seems to me a reasonable way to address that (where reasonable means I don't really know how hard the tech implementation is ;) ) is to provide a suitable warning when someone tries to do exactly that - save to temp. The issue to me seems to be in OpenOffice and other applications that save files - that is where users go wrong. I think making apps like Thunderbird open attachments in a given way isn't the right place to address the original issue, as it catches too many other use cases.

I haven't tried the mozilla-open-office plug in so don't know for sure, but from your description of "allows you to save anyplace you want", that isn't what I am looking for. I am looking for Mozilla behaviour that lets me open an attachment and then modify it directly if I want. I don't think my mail program should assume that I will misuse my document editor. If my document editor (e.g,. OpenOffice) is worried about me accidentally saving to temp storage, then I think it is reasonable that it warn me if I attempt to do such a thing.