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For the last year or so, I have used this URL to list a union of 3 tags:

Earlier this afternoon, this changed behaviour and now seems to ignore the last or and displays questions tagged as 1) inno-setup or 2) vb AND winapi which drastically cuts down the results.

The search summary now shows:

questions tagged

[inno-setup] or [vb6] [winapi]

Is this an expected change and if so, is there another way to display a union of 3+ tags?

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Look at this question too – hims056 Sep 13 '12 at 14:40
I can confirm this strange behavior. I'm noticing the same thing and it just started today for me. – nmc Sep 13 '12 at 14:52
@hims056: Not certain that's related; that's a query with only one or and a wildcard tag. – Martijn Pieters Sep 13 '12 at 14:57
Yup, I can confirm it as well. It's independent of the tags used, and only the first or is honoured. Using the search box to construct the tag search doesn't help. – Martijn Pieters Sep 13 '12 at 15:21
Also fails with the alternative tagnames= format. See this answer for an example of a 17-tag-union that no longer works. – Kevin Sep 13 '12 at 19:06
K; this is fallout from a related change; fixinating... – Marc Gravell Sep 14 '12 at 6:09
up vote 8 down vote accepted

My apologies; this change yesterday was a little bit over zealous. I've dialed it back a few notches, and it should be approaching sanity in a few minutes.

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Woo, "18,130 questions tagged", thanks :) – Deanna Sep 14 '12 at 12:20

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