Facebook share URL with get parameters

I'm trying to generate a share URL with get parameters and it's doing some double encoding shenanigans.

<a href="http://www.fa开发者_如何转开发cebook.com/share.php?u=http%3A%2F%2Fwww.bing.com%2Fsearch%3Fq%3Dkeyword" />

produces an error url while

<a href="http://www.facebook.com/share.php?u=http%3A%2F%2Fwww.bing.com" />

is fine. Anyone have ideas?

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Facebook share link needed to be cached on their side. This has since be resolved on facebooks end.