Use minimumDef instead of minimum (partial function).

4 files changed, 8 insertions, 9 deletions

diff --git a/src/Text/Pandoc/Readers/LaTeX.hs b/src/Text/Pandoc/Readers/LaTeX.hs
index 21a563bed..32f7fc5af 100644
--- a/src/Text/Pandoc/Readers/LaTeX.hs
+++ b/src/Text/Pandoc/Readers/LaTeX.hs
@@ -96,7 +96,7 @@ parseLaTeX = do
   let doc' = doc bs
   let headerLevel (Header n _ _) = [n]
       headerLevel _              = []
-  let bottomLevel = minimumBound 1 $ query headerLevel doc'
+  let bottomLevel = minimumDef 1 $ query headerLevel doc'
   let adjustHeaders m (Header n attr ils) = Header (n+m) attr ils
       adjustHeaders _ x                   = x
   let (Pandoc _ bs') =
diff --git a/src/Text/Pandoc/Readers/Org/Blocks.hs b/src/Text/Pandoc/Readers/Org/Blocks.hs
index d1aff701e..c6f27118b 100644
--- a/src/Text/Pandoc/Readers/Org/Blocks.hs
+++ b/src/Text/Pandoc/Readers/Org/Blocks.hs
@@ -39,6 +39,7 @@ import Data.Functor (($>))
 import Data.List (foldl', intersperse)
 import Data.Maybe (fromMaybe, isJust, isNothing)
 import Data.Text (Text)
+import Safe (minimumDef)
 
 import qualified Data.Text as T
 import qualified Text.Pandoc.Builder as B
@@ -542,8 +543,7 @@ include = try $ do
     in case (minlvl >>= safeRead :: Maybe Int) of
          Nothing -> blks
          Just lvl -> let levels = Walk.query headerLevel blks
-                         -- CAVE: partial function in else
-                         curMin = if null levels then 0 else minimum levels
+                         curMin = minimumDef 0 levels
                      in Walk.walk (shiftHeader (curMin - lvl)) blks
 
   headerLevel :: Block -> [Int]
diff --git a/src/Text/Pandoc/Readers/Textile.hs b/src/Text/Pandoc/Readers/Textile.hs
index 99238c7f0..50ffd36ec 100644
--- a/src/Text/Pandoc/Readers/Textile.hs
+++ b/src/Text/Pandoc/Readers/Textile.hs
@@ -53,6 +53,7 @@ import Text.Pandoc.Parsing
 import Text.Pandoc.Readers.HTML (htmlTag, isBlockTag, isInlineTag)
 import Text.Pandoc.Readers.LaTeX (rawLaTeXBlock, rawLaTeXInline)
 import Text.Pandoc.Shared (crFilter, trim, tshow)
+import Safe (minimumDef)
 
 -- | Parse a Textile text and return a Pandoc document.
 readTextile :: PandocMonad m
@@ -376,7 +377,8 @@ table = try $ do
                                 (toprow, rest)
                              _ -> (mempty, rawrows)
   let nbOfCols = maximum $ map length (headers:rows)
-  let aligns = map minimum $ transpose $ map (map (snd . fst)) (headers:rows)
+  let aligns = map (minimumDef AlignDefault) $
+                transpose $ map (map (snd . fst)) (headers:rows)
   let toRow = Row nullAttr . map B.simpleCell
       toHeaderRow l = [toRow l | not (null l)]
   return $ B.table (B.simpleCaption $ B.plain caption)
diff --git a/src/Text/Pandoc/Writers/Powerpoint/Output.hs b/src/Text/Pandoc/Writers/Powerpoint/Output.hs
index 5caeb0753..b26a7ff3e 100644
--- a/src/Text/Pandoc/Writers/Powerpoint/Output.hs
+++ b/src/Text/Pandoc/Writers/Powerpoint/Output.hs
@@ -50,6 +50,7 @@ import Text.Pandoc.Writers.Math (convertMath)
 import Text.Pandoc.Writers.Powerpoint.Presentation
 import Text.Pandoc.Shared (tshow)
 import Skylighting (fromColor)
+import Safe (minimumDef)
 
 -- |The 'EMU' type is used to specify sizes in English Metric Units.
 type EMU = Integer
@@ -1427,11 +1428,7 @@ presentationToRels pres@(Presentation _ slides) = do
   -- all relWithoutSlide rels (unless they're 1)
   -- 3. If we have a notesmaster slide, we make space for that as well.
 
-  let minRelNotOne = case filter (1<) $ map relId relsWeKeep of
-        [] -> 0                 -- doesn't matter in this case, since
-                                -- there will be nothing to map the
-                                -- function over
-        l  -> minimum l
+  let minRelNotOne = minimumDef 0 $ filter (1 <) $ map relId relsWeKeep
 
       modifyRelNum :: Int -> Int
       modifyRelNum 1 = 1