Itching a bit at the idea of totally disallowing a card name. As the handled file endings expand, they will overlap with top level domains, and possibly other terms that people really will want to use for card names.

How about changing it to offer to add the card with the stripped name as decribed above, but having a less prominent link to go ahead and add it with the full name they typed in? (And then when "foo.txt" is requested, giving "foo.txt" if it exists, otherwise looking for "foo".)

disallow -> discourage?

--John

Also, note I added the tag "file types by ending" - anyone got a better term for our new nifty auto-handling of file types via their endings?

  --John Abbe.....Sun Jan 23 12:35:28 -0800 2011

As long as we're doing this, we may as well disallow any endings that we're certain we're going to implement. See add file endings generating more file formats,

  --John Abbe.....Wed Feb 16 04:23:29 -0800 2011