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import Text.Pandoc.JSON
import Text.Pandoc.Walk
import Data.Char (toUpper)
main :: IO ()
main = toJSONFilter capitalizeHeaders
capitalizeHeaders :: Block -> Block
capitalizeHeaders (Header 1 attr xs) = Header 1 attr $ walk capitalize xs
capitalizeHeaders x = walk capitalizeHeaderLinks x
capitalize :: Inline -> Inline
capitalize (Str xs) = Str $ map toUpper xs
capitalize x = x
capitalizeHeaderLinks :: Inline -> Inline
capitalizeHeaderLinks (Link xs t@('#':_,_)) = Link (walk capitalize xs) t
capitalizeHeaderLinks x = x
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