diff options
Diffstat (limited to 'src/Text/Pandoc/Writers/EPUB.hs')
| -rw-r--r-- | src/Text/Pandoc/Writers/EPUB.hs | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/src/Text/Pandoc/Writers/EPUB.hs b/src/Text/Pandoc/Writers/EPUB.hs index 64f94f41f..804dbb926 100644 --- a/src/Text/Pandoc/Writers/EPUB.hs +++ b/src/Text/Pandoc/Writers/EPUB.hs @@ -31,6 +31,7 @@ Conversion of 'Pandoc' documents to EPUB. module Text.Pandoc.Writers.EPUB ( writeEPUB ) where import Data.IORef ( IORef, newIORef, readIORef, modifyIORef ) import qualified Data.Map as M +import qualified Data.Set as Set import Data.Maybe ( fromMaybe, catMaybes ) import Data.List ( isPrefixOf, isInfixOf, intercalate ) import System.Environment ( getEnv ) @@ -916,13 +917,13 @@ showChapter = printf "ch%03d.xhtml" -- Add identifiers to any headers without them. addIdentifiers :: [Block] -> [Block] -addIdentifiers bs = evalState (mapM go bs) [] +addIdentifiers bs = evalState (mapM go bs) Set.empty where go (Header n (ident,classes,kvs) ils) = do ids <- get let ident' = if null ident then uniqueIdent ils ids else ident - put $ ident' : ids + modify $ Set.insert ident' return $ Header n (ident',classes,kvs) ils go x = return x |