A tag which exists only on one question is automatically deleted after certain time unless it has a tag-wiki.

Is it possible to check whether a tag have been removed by this process (because of being used on a single question)?


  • If I remember the name of the tag, can I find out how it has been removed - manually or by the system?
  • If I remember a question where this tag was used, can I somehow check whether a tag has been removed from this question by this process (and not manually)?

Here is a specific example. As mentioned here on meta, the tag finiteness has been used in this question. If I look at the revision history, none of the edits show removal of this tag. The first revision of the post is shown without tags. This seems to be different from the behavior of a tag which has been removed manually, for example, you can compare the revision history and the first revision of another post, which uses a tag which no longer exists.

Is my guess that the tag has been removed by an automated process correct? Would I be able to find this out without knowing that this question originally had tag?


These removals are logged, but there's no easy way to look that up; you'd have to get an employee to search the logs for you.

The finiteness tag was removed on February 1st, 2014; it was removed from one post and 3 history entries by the monthly scheduled task that removes single-use tags after 6 months. That's all the information I have; critically, I can't tell you which post(s) had the tag prior to its removal.

  • $\begingroup$ Can you maybe tell someone else? $\endgroup$ – Asaf Karagila May 13 '17 at 16:20
  • $\begingroup$ Tell someone else... what? $\endgroup$ – Shog9 May 13 '17 at 16:27
  • $\begingroup$ "I can't tell you which post(s) had the tag prior to its removal." $\endgroup$ – Asaf Karagila May 13 '17 at 16:36
  • $\begingroup$ Oh. Lulz. No, because that information isn't recorded. $\endgroup$ – Shog9 May 13 '17 at 16:45

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