about fixing add_file()...

Hi Julian,

I heard you were changing things about update editor's add_file() copyfrom
args. The thing is I have taken the liberty to look at add-vs-add tree
conflicts and have a pretty nice improvement on that aalmost ready.

Now I fear that our patches will clash and am curious. Can I see your patch?
here is mine (there's still some amount of clutter around in it, don't be
distracted by it -- update_editor.c is the point).

Because the patch is quite unintelligible I've also attached my current
update_editor.c.

~Neels