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# Check for changed posts
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Jekyll::Hooks.register :posts, :post_init do |post|
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commit_num = `git rev-list --count HEAD "#{ post.path }"`
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if commit_num.to_i > 1
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lastmod_date = `git log -1 --pretty="%ad" --date=iso "#{ post.path }"`
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post.data['lastmod'] = lastmod_date
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end
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end
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