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...Besides one of them getting marked as a duplicate, of course.

Questions have URLs based on the text of the title, with non-alphanumerics removed, upper-case letters downcased, and spaces converted to hyphens. This is clearly not an injective mapping, so what happens when there's a collision?

Just wondering.

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1 Answer 1

up vote 4 down vote accepted

Questions have URLs based on their ID, the title is just for search engines, hence no collisions.

Try this:

What happens if two questions are identical after conversion to alphanumeric-and-hyphens-only?

Jon Skeet Facts

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Oh yeah. Forgot about the ID. –  Ryan Thompson May 5 '10 at 15:19

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