It treats the last case as a single tag called c+pointers rather than two tags.


It generates the URL if you go to the page for c tagged questions(https://stackoverflow.com/questions/tagged/c), and then scroll down to the related tags sidebar and click on any other tag to form a tag1+tag2 filter.

  • This works!: stackoverflow.com/questions/tagged/c%20pointers – Eric Jul 10 '09 at 21:24
  • Enter the first URL, then scroll down to the related tags section, then click on the pointers tag. That will generate the invalid URL shown here. – Curtis Tasker Jul 10 '09 at 21:26
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    It's probably just the special case of c++ thats throwing it off. – Brad Gilbert Jul 11 '09 at 2:09

Brad is right -- the decision to allow plus in tags causes us no end of grief, and results in a lot of contortions in the coede.

General rule:

  • if any of the tags contain a plus, use space to delimit them.
  • if none of the tags contain a plus, you can use plus or space to delimit them.

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