Mercurial: Resync working directory with .hgignore file

I just opened up a project that had the .hgignore file set up entirely wrong. I have fixed it to what it should be, and now I have to remove all the stuff that it was previously not ignoring and now shoul开发者_如何学Cd. Maybe its just early in the morning, but any way to do that other than manually?

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(requires Mercurial >= 1.9)

$ hg forget "set:hgignore() and not ignored()"

see hg help filesets for more