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authorJohn MacFarlane <jgm@berkeley.edu>2021-03-20 10:07:51 -0700
committerJohn MacFarlane <jgm@berkeley.edu>2021-03-20 15:58:32 -0700
commit84d8f3efd8a45194752209b7d55b18a2291ed1ae (patch)
tree4cc584a53648df78489df48fddb0891b318e4ee7 /src/Text
parent82e8c29cb0a89d7129f459bef6696254ec56e0c6 (diff)
downloadpandoc-84d8f3efd8a45194752209b7d55b18a2291ed1ae.tar.gz
RST writer: use NonEmpty for init, last.
Diffstat (limited to 'src/Text')
-rw-r--r--src/Text/Pandoc/Writers/RST.hs20
1 files changed, 12 insertions, 8 deletions
diff --git a/src/Text/Pandoc/Writers/RST.hs b/src/Text/Pandoc/Writers/RST.hs
index 0b9fc8331..983ef412a 100644
--- a/src/Text/Pandoc/Writers/RST.hs
+++ b/src/Text/Pandoc/Writers/RST.hs
@@ -17,7 +17,7 @@ module Text.Pandoc.Writers.RST ( writeRST, flatten ) where
import Control.Monad.State.Strict
import Data.Char (isSpace)
import Data.List (transpose, intersperse, foldl')
-import Data.List.NonEmpty (nonEmpty)
+import qualified Data.List.NonEmpty as NE
import Data.Maybe (fromMaybe)
import qualified Data.Text as T
import Data.Text (Text)
@@ -336,7 +336,7 @@ blockToRST (OrderedList (start, style', delim) items) = do
then replicate (length items) "#."
else take (length items) $ orderedListMarkers
(start, style', delim)
- let maxMarkerLength = maybe 0 maximum $ nonEmpty $ map T.length markers
+ let maxMarkerLength = maybe 0 maximum $ NE.nonEmpty $ map T.length markers
let markers' = map (\m -> let s = maxMarkerLength - T.length m
in m <> T.replicate s " ") markers
contents <- zipWithM orderedListItemToRST markers' items
@@ -538,11 +538,15 @@ flatten outer
collapse f i = appendToLast f $ dropInlineParent i
appendToLast :: [Inline] -> [Inline] -> [Inline]
- appendToLast [] toAppend = [setInlineChildren outer toAppend]
- appendToLast flattened toAppend
- | isOuter lastFlat = init flattened <> [appendTo lastFlat toAppend]
- | otherwise = flattened <> [setInlineChildren outer toAppend]
- where lastFlat = last flattened
+ appendToLast flattened toAppend =
+ case NE.nonEmpty flattened of
+ Nothing -> [setInlineChildren outer toAppend]
+ Just xs ->
+ if isOuter lastFlat
+ then NE.init xs <> [appendTo lastFlat toAppend]
+ else flattened <> [setInlineChildren outer toAppend]
+ where
+ lastFlat = NE.last xs
appendTo o i = mapNested (<> i) o
isOuter i = emptyParent i == emptyParent outer
emptyParent i = setInlineChildren i []
@@ -762,7 +766,7 @@ simpleTable opts blocksToDoc headers rows = do
then return []
else fixEmpties <$> mapM (blocksToDoc opts) headers
rowDocs <- mapM (fmap fixEmpties . mapM (blocksToDoc opts)) rows
- let numChars = maybe 0 maximum . nonEmpty . map offset
+ let numChars = maybe 0 maximum . NE.nonEmpty . map offset
let colWidths = map numChars $ transpose (headerDocs : rowDocs)
let toRow = mconcat . intersperse (lblock 1 " ") . zipWith lblock colWidths
let hline = nowrap $ hsep (map (\n -> literal (T.replicate n "=")) colWidths)