Possible Duplicate:

No biggie, but when closing a question as exact duplicate, entering a question ID and then deleting it, the following situation may occur:


I have emptied the question text field but still the close button stays enabled. Clicking it will in fact result in a close vote being cast – but apparently without dedicated duplicate question ID. At least, that’s what happened when Jon Seigel tried it on this question. His close vote was counted but when I then tried to close the question as exact duplicate, the list of “master questions” was still empty.

And a the request of Jon Seigel, here's the state of the vote to close dialog on this question:

alt text
(source: free-online.co.uk)

And here's what the question looked like as a closed question:

alt text

  • Sorry, I tried clicking close on your question to test before I saw the last paragraph. This definitely needs fixing. +1
    – Jon Seigel
    Commented May 16, 2010 at 16:16
  • @Jon Seigel: Oops. I just did, too, to see what question you had given as the duplicate. Answer: none. Apparently your vote was registered but no question was assigned as dedicated duplicate. Commented May 16, 2010 at 17:15
  • Could someone please take a screenshot of the current state of the exact duplicate screen on this question so everyone can see?
    – Jon Seigel
    Commented May 16, 2010 at 17:51
  • @Jon - here you go forman.free-online.co.uk/images/missing-close-votes.png
    – ChrisF Mod
    Commented May 16, 2010 at 18:04
  • Thanks, @Chris -- is there anything clickable under "Other users chose ..."?
    – Jon Seigel
    Commented May 16, 2010 at 18:37
  • 2
    okay, one more close vote like this, then we can see what happens
    – balpha StaffMod
    Commented May 16, 2010 at 18:57
  • @Jon - There didn't appear to be anything clickable.
    – ChrisF Mod
    Commented May 16, 2010 at 20:01
  • 1
    … and now we have closed the question, there’s no reason given, and the bug will never be fixed … ;-) Commented May 16, 2010 at 20:10
  • I added a screenshot of what the question looks like now, so we can reopen.
    – Jon Seigel
    Commented May 16, 2010 at 20:16
  • You broke my internetz!
    – perbert
    Commented May 17, 2010 at 13:22

2 Answers 2


The real bug is that the server doesn't check if a valid id was supplied. Closing as a duplicate of nothing and closing as a duplicate of an answer should be rejected by the server.


This is now fixed, with the recent changes to close as dupe:

  1. Shows full preview of proposed duplicate in a scrollable <div>
  2. No longer uses drop-down behavior but simpler "after pause in typing, attempt to load the question URL or ID you just entered in a preview below the input area"
  3. You can click on the previously chosen duplicates below, to get an instant preview of the dupe to judge if it is actually a duplicate or not.
  4. Handy search link in upper right (with improved search help page) to help you find those pesky dupes
  • 1
    I think my close vote with duplicate id null for this question was still accepted by the server. The close vote count went up, but it didn't add a "duplicate comment". I modified the client Javascript to post this vote, but even if you can't enter them over the user interface anymore, I still think the server should reject empty duplicate ids.
    – sth
    Commented Jun 4, 2010 at 12:14

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