dev: lib, cli, bin: enable/fix name shadowing warnings

And a few other cleanups.

Makefile

@@ -206,7 +206,6 @@ WARNINGS:=\
 	-Wall \
   -Wno-incomplete-uni-patterns \
 	-Wno-missing-signatures \
-	-Wno-name-shadowing \
 	-Wno-orphans \
 	-Wno-type-defaults \
 	-Wno-unused-do-bind \
@@ -418,7 +417,7 @@ ghci-web-test: webdirs $(call def-help,ghci-web-test, start ghci REPL on hledger
 # better than stack exec ?
 # XXX does not see changes to files
 ghci-unit-test: $(call def-help,ghci-unit-test, start ghci REPL on hledger-lib + unit test suite)
-	$(STACKGHCI) ghci --ghc-options='-rtsopts -Wall -Wno-incomplete-uni-patterns -Wno-missing-signatures -Wno-name-shadowing -Wno-orphans -Wno-type-defaults -Wno-unused-do-bind  -ihledger-lib  -DDEVELOPMENT -DVERSION="\"1.26.99\""' hledger-lib/test/unittest.hs
+	$(STACKGHCI) ghci --ghc-options='-rtsopts $(WARNINGS) -ihledger-lib  -DDEVELOPMENT -DVERSION="\"1.26.99\""' hledger-lib/test/unittest.hs
 
 # ghci-all: $(call def-help,ghci-all, start ghci REPL on all the hledger)
 # 	$(STACK) exec -- $(GHCI) $(BUILDFLAGS) \

bin/hledger-balance-as-budget.hs

@@ -3,7 +3,7 @@
 -- Run from inside the hledger source tree, or compile with compile.sh.
 -- See hledger-check-fancyassertions.hs.
 
--- {-# OPTIONS_GHC -Wno-missing-signatures -Wno-name-shadowing #-}
+-- {-# OPTIONS_GHC -Wno-missing-signatures #-}
 
 {-| Construct two balance reports for two different time periods and use one of the as "budget" for
     the other, thus comparing them

bin/hledger-combine-balances.hs

@@ -5,7 +5,7 @@
 
 {- Construct two balance reports for two different time periods and render them side by side -}
 
-{-# OPTIONS_GHC -Wno-missing-signatures -Wno-name-shadowing #-}
+{-# OPTIONS_GHC -Wno-missing-signatures #-}
 
 import System.Environment (getArgs)
 import Hledger.Cli

bin/hledger-smooth.hs

@@ -15,7 +15,7 @@
 {-# LANGUAGE QuasiQuotes #-}
 {-# LANGUAGE OverloadedStrings #-}
 {-# LANGUAGE NamedFieldPuns #-}
-{-# OPTIONS_GHC -Wall -Wno-missing-signatures -Wno-name-shadowing #-}
+{-# OPTIONS_GHC -Wall -Wno-missing-signatures #-}
 
 import Data.List
 import Data.Maybe

bin/hledger-swap-dates.hs

@@ -3,7 +3,7 @@
 -- Run from inside the hledger source tree, or compile with compile.sh.
 -- See hledger-check-fancyassertions.hs.
 
-{-# OPTIONS_GHC -Wno-missing-signatures -Wno-name-shadowing #-}
+{-# OPTIONS_GHC -Wno-missing-signatures #-}
 {-# LANGUAGE NamedFieldPuns #-}
 {-# LANGUAGE QuasiQuotes #-}
 {-# LANGUAGE RecordWildCards #-}

hledger-lib/Hledger/Data/Account.hs

@@ -104,10 +104,10 @@ accountTree :: AccountName -> [AccountName] -> Account
 accountTree rootname as = nullacct{aname=rootname, asubs=map (uncurry accountTree') $ M.assocs m }
   where
     T m = treeFromPaths $ map expandAccountName as :: FastTree AccountName
-    accountTree' a (T m) =
+    accountTree' a (T m') =
       nullacct{
         aname=a
-       ,asubs=map (uncurry accountTree') $ M.assocs m
+       ,asubs=map (uncurry accountTree') $ M.assocs m'
        }
 
 -- | An efficient-to-build tree suggested by Cale Gibbard, probably
@@ -223,7 +223,7 @@ pruneAccounts p = headMay . prune
 -- tree's structure remains intact and can still be used. It's a tree/list!
 flattenAccounts :: Account -> [Account]
 flattenAccounts a = squish a []
-  where squish a as = a : Prelude.foldr squish as (asubs a)
+  where squish a' as = a' : Prelude.foldr squish as (asubs a')
 
 -- | Filter an account tree (to a list).
 filterAccounts :: (Account -> Bool) -> Account -> [Account]

hledger-lib/Hledger/Data/AccountName.hs

@@ -177,12 +177,12 @@ concatAccountNames as = accountNameWithPostingType t $ T.intercalate ":" $ map a
 -- Or, return any error arising from a bad regular expression in the aliases.
 accountNameApplyAliases :: [AccountAlias] -> AccountName -> Either RegexError AccountName
 accountNameApplyAliases aliases a =
-  let (aname,atype) = (accountNameWithoutPostingType a, accountNamePostingType a)
+  let (name,typ) = (accountNameWithoutPostingType a, accountNamePostingType a)
   in foldM
      (\acct alias -> dbg6 "result" $ aliasReplace (dbg6 "alias" alias) (dbg6 "account" acct))
-     aname
+     name
      aliases
-     >>= Right . accountNameWithPostingType atype
+     >>= Right . accountNameWithPostingType typ
 
 -- | Memoising version of accountNameApplyAliases, maybe overkill.
 accountNameApplyAliasesMemo :: [AccountAlias] -> AccountName -> Either RegexError AccountName
@@ -238,7 +238,7 @@ parentAccountNames :: AccountName -> [AccountName]
 parentAccountNames a = parentAccountNames' $ parentAccountName a
     where
       parentAccountNames' "" = []
-      parentAccountNames' a = a : parentAccountNames' (parentAccountName a)
+      parentAccountNames' a2 = a2 : parentAccountNames' (parentAccountName a2)
 
 -- | Is the first account a parent or other ancestor of (and not the same as) the second ?
 isAccountNamePrefixOf :: AccountName -> AccountName -> Bool
@@ -296,9 +296,9 @@ elideAccountName width s
     fitText Nothing (Just width) True False $ accountNameFromComponents $ elideparts width [] $ accountNameComponents s
       where
         elideparts :: Int -> [Text] -> [Text] -> [Text]
-        elideparts width done ss
+        elideparts w done ss
-          | realLength (accountNameFromComponents $ done++ss) <= width = done++ss
+          | realLength (accountNameFromComponents $ done++ss) <= w = done++ss
-          | length ss > 1 = elideparts width (done++[textTakeWidth 2 $ head ss]) (tail ss)
+          | length ss > 1 = elideparts w (done++[textTakeWidth 2 $ head ss]) (tail ss)
           | otherwise = done++ss
 
 -- | Keep only the first n components of an account name, where n

hledger-lib/Hledger/Data/Amount.hs

@@ -255,6 +255,7 @@ instance Num Amount where
     (-)                          = similarAmountsOp (-)
     (*)                          = similarAmountsOp (*)
 
+-- TODO: amount, num are clashy
 -- | The empty simple amount.
 amount, nullamt :: Amount
 amount = Amount{acommodity="", aquantity=0, aprice=Nothing, astyle=amountstyle}
@@ -314,8 +315,8 @@ amountCost a@Amount{aquantity=q, aprice=mp} =
 transformAmount :: (Quantity -> Quantity) -> Amount -> Amount
 transformAmount f a@Amount{aquantity=q,aprice=p} = a{aquantity=f q, aprice=f' <$> p}
   where
-    f' (TotalPrice a@Amount{aquantity=pq}) = TotalPrice a{aquantity = f pq}
+    f' (TotalPrice a1@Amount{aquantity=pq}) = TotalPrice a1{aquantity = f pq}
-    f' p = p
+    f' p' = p'
 
 -- | Divide an amount's quantity (and its total price, if it has one) by a constant.
 divideAmount :: Quantity -> Amount -> Amount
@@ -522,15 +523,15 @@ showamountquantity amt@Amount{astyle=AmountStyle{asdecimalpoint=mdec, asdigitgro
 applyDigitGroupStyle :: Maybe DigitGroupStyle -> Int -> T.Text -> WideBuilder
 applyDigitGroupStyle Nothing                       l s = WideBuilder (TB.fromText s) l
 applyDigitGroupStyle (Just (DigitGroups _ []))     l s = WideBuilder (TB.fromText s) l
-applyDigitGroupStyle (Just (DigitGroups c (g:gs))) l s = addseps (g:|gs) (toInteger l) s
+applyDigitGroupStyle (Just (DigitGroups c (g0:gs0))) l0 s0 = addseps (g0:|gs0) (toInteger l0) s0
   where
-    addseps (g:|gs) l s
+    addseps (g1:|gs1) l1 s1
-        | l' > 0    = addseps gs' l' rest <> WideBuilder (TB.singleton c <> TB.fromText part) (fromIntegral g + 1)
+        | l2 > 0    = addseps gs2 l2 rest <> WideBuilder (TB.singleton c <> TB.fromText part) (fromIntegral g1 + 1)
-        | otherwise = WideBuilder (TB.fromText s) (fromInteger l)
+        | otherwise = WideBuilder (TB.fromText s1) (fromInteger l1)
       where
-        (rest, part) = T.splitAt (fromInteger l') s
+        (rest, part) = T.splitAt (fromInteger l2) s1
-        gs' = fromMaybe (g:|[]) $ nonEmpty gs
+        gs2 = fromMaybe (g1:|[]) $ nonEmpty gs1
-        l' = l - toInteger g
+        l2 = l1 - toInteger g1
 
 -- like journalCanonicaliseAmounts
 -- | Canonicalise an amount's display style using the provided commodity style map.
@@ -702,10 +703,10 @@ maCommodities = S.fromList . fmap acommodity . amounts'
 unifyMixedAmount :: MixedAmount -> Maybe Amount
 unifyMixedAmount = foldM combine 0 . amounts
   where
-    combine amount result
+    combine amt result
-      | amountIsZero amount                    = Just result
+      | amountIsZero amt                    = Just result
-      | amountIsZero result                    = Just amount
+      | amountIsZero result                 = Just amt
-      | acommodity amount == acommodity result = Just $ amount + result
+      | acommodity amt == acommodity result = Just $ amt + result
       | otherwise                           = Nothing
 
 -- | Sum same-commodity amounts in a lossy way, applying the first
@@ -839,10 +840,10 @@ showMixedAmountDebug m | m == missingmixedamt = "(missing)"
 showMixedAmountB :: AmountDisplayOpts -> MixedAmount -> WideBuilder
 showMixedAmountB opts ma
     | displayOneLine opts = showMixedAmountOneLineB opts ma
-    | otherwise           = WideBuilder (wbBuilder . mconcat $ intersperse sep lines) width
+    | otherwise           = WideBuilder (wbBuilder . mconcat $ intersperse sep ls) width
   where
-    lines = showMixedAmountLinesB opts ma
+    ls = showMixedAmountLinesB opts ma
-    width = headDef 0 $ map wbWidth lines
+    width = headDef 0 $ map wbWidth ls
     sep = WideBuilder (TB.singleton '\n') 0
 
 -- | Helper for showMixedAmountB to show a list of Amounts on multiple lines. This returns
@@ -900,7 +901,7 @@ showMixedAmountOneLineB opts@AmountDisplayOpts{displayMaxWidth=mmax,displayMinWi
     dropWhileRev p = foldr (\x xs -> if null xs && p x then [] else x:xs) []
 
     -- Add the elision strings (if any) to each amount
-    withElided = zipWith (\num amt -> (amt, elisionDisplay Nothing (wbWidth sep) num amt)) [n-1,n-2..0]
+    withElided = zipWith (\n2 amt -> (amt, elisionDisplay Nothing (wbWidth sep) n2 amt)) [n-1,n-2..0]
 
 orderedAmounts :: AmountDisplayOpts -> MixedAmount -> [Amount]
 orderedAmounts dopts = maybe id (mapM pad) (displayOrder dopts) . amounts

hledger-lib/Hledger/Data/Balancing.hs

@@ -315,11 +315,11 @@ priceInferrerFor t pt = maybe id inferprice inferFromAndTo
     -- For each posting, if the posting type matches, there is only a single amount in the posting,
     -- and the commodity of the amount matches the amount we're converting from,
     -- then set its price based on the ratio between fromamount and toamount.
-    inferprice (fromamount, toamount) posting
+    inferprice (fromamount, toamount) p
-        | [a] <- amounts (pamount posting), ptype posting == pt, acommodity a == acommodity fromamount
+        | [a] <- amounts (pamount p), ptype p == pt, acommodity a == acommodity fromamount
-            = posting{ pamount   = mixedAmount a{aprice=Just conversionprice}
+            = p{ pamount   = mixedAmount a{aprice=Just conversionprice}
-                     , poriginal = Just $ originalPosting posting }
+                     , poriginal = Just $ originalPosting p }
-        | otherwise = posting
+        | otherwise = p
       where
         -- If only one Amount in the posting list matches fromamount we can use TotalPrice.
         -- Otherwise divide the conversion equally among the Amounts by using a unit price.

hledger-lib/Hledger/Data/Dates.hs

@@ -2,7 +2,6 @@
 {-# LANGUAGE NoMonoLocalBinds    #-}
 {-# LANGUAGE OverloadedStrings   #-}
 {-# LANGUAGE ScopedTypeVariables #-}
-{-# LANGUAGE TupleSections       #-}
 {-# LANGUAGE TypeFamilies        #-}
 {-|
 
@@ -348,9 +347,9 @@ latestSpanContaining :: [DateSpan] -> Day -> Maybe DateSpan
 latestSpanContaining datespans = go
   where
     go day = do
-        span <- Set.lookupLT supSpan spanSet
+        spn <- Set.lookupLT supSpan spanSet
-        guard $ spanContainsDate span day
+        guard $ spanContainsDate spn day
-        return span
+        return spn
       where
         -- The smallest DateSpan larger than any DateSpan containing day.
         supSpan = DateSpan (Just $ addDays 1 day) Nothing
@@ -387,18 +386,19 @@ spanFromSmartDate :: Day -> SmartDate -> DateSpan
 spanFromSmartDate refdate sdate = DateSpan (Just b) (Just e)
     where
       (ry,rm,_) = toGregorian refdate
-      (b,e) = span sdate
+      (b,e) = span' sdate
-      span :: SmartDate -> (Day,Day)
+        where
-      span (SmartCompleteDate day)       = (day, nextday day)
+          span' :: SmartDate -> (Day,Day)
-      span (SmartAssumeStart y Nothing)  = (startofyear day, nextyear day) where day = fromGregorian y 1 1
+          span' (SmartCompleteDate day)       = (day, nextday day)
-      span (SmartAssumeStart y (Just m)) = (startofmonth day, nextmonth day) where day = fromGregorian y m 1
+          span' (SmartAssumeStart y Nothing)  = (startofyear day, nextyear day) where day = fromGregorian y 1 1
-      span (SmartFromReference m d)      = (day, nextday day) where day = fromGregorian ry (fromMaybe rm m) d
+          span' (SmartAssumeStart y (Just m)) = (startofmonth day, nextmonth day) where day = fromGregorian y m 1
-      span (SmartMonth m)                = (startofmonth day, nextmonth day) where day = fromGregorian ry m 1
+          span' (SmartFromReference m d)      = (day, nextday day) where day = fromGregorian ry (fromMaybe rm m) d
-      span (SmartRelative n Day)         = (addDays n refdate, addDays (n+1) refdate)
+          span' (SmartMonth m)                = (startofmonth day, nextmonth day) where day = fromGregorian ry m 1
-      span (SmartRelative n Week)        = (addDays (7*n) d, addDays (7*n+7) d) where d = thisweek refdate
+          span' (SmartRelative n Day)         = (addDays n refdate, addDays (n+1) refdate)
-      span (SmartRelative n Month)       = (addGregorianMonthsClip n d, addGregorianMonthsClip (n+1) d) where d = thismonth refdate
+          span' (SmartRelative n Week)        = (addDays (7*n) d, addDays (7*n+7) d) where d = thisweek refdate
-      span (SmartRelative n Quarter)     = (addGregorianMonthsClip (3*n) d, addGregorianMonthsClip (3*n+3) d) where d = thisquarter refdate
+          span' (SmartRelative n Month)       = (addGregorianMonthsClip n d, addGregorianMonthsClip (n+1) d) where d = thismonth refdate
-      span (SmartRelative n Year)        = (addGregorianYearsClip n d, addGregorianYearsClip (n+1) d) where d = thisyear refdate
+          span' (SmartRelative n Quarter)     = (addGregorianMonthsClip (3*n) d, addGregorianMonthsClip (3*n+3) d) where d = thisquarter refdate
+          span' (SmartRelative n Year)        = (addGregorianYearsClip n d, addGregorianYearsClip (n+1) d) where d = thisyear refdate
 
 -- showDay :: Day -> String
 -- showDay day = printf "%04d/%02d/%02d" y m d where (y,m,d) = toGregorian day
@@ -541,7 +541,7 @@ thisquarter = startofquarter
 startofquarter day = fromGregorian y (firstmonthofquarter m) 1
     where
       (y,m,_) = toGregorian day
-      firstmonthofquarter m = ((m-1) `div` 3) * 3 + 1
+      firstmonthofquarter m2 = ((m2-1) `div` 3) * 3 + 1
 
 thisyear = startofyear
 prevyear = startofyear . addGregorianYearsClip (-1)
@@ -577,14 +577,14 @@ intervalStartBefore int d =
 -- >>> nthdayofyearcontaining 1 1 wed22nd
 -- 2017-01-01
 nthdayofyearcontaining :: Month -> MonthDay -> Day -> Day
-nthdayofyearcontaining m md date
+nthdayofyearcontaining m mdy date
   -- PARTIAL:
   | not (validMonth m)  = error' $ "nthdayofyearcontaining: invalid month "++show m
-  | not (validDay   md) = error' $ "nthdayofyearcontaining: invalid day "  ++show md
+  | not (validDay   mdy) = error' $ "nthdayofyearcontaining: invalid day "  ++show mdy
   | mmddOfSameYear <= date = mmddOfSameYear
   | otherwise = mmddOfPrevYear
-  where mmddOfSameYear = addDays (toInteger md-1) $ applyN (m-1) nextmonth s
+  where mmddOfSameYear = addDays (toInteger mdy-1) $ applyN (m-1) nextmonth s
-        mmddOfPrevYear = addDays (toInteger md-1) $ applyN (m-1) nextmonth $ prevyear s
+        mmddOfPrevYear = addDays (toInteger mdy-1) $ applyN (m-1) nextmonth $ prevyear s
         s = startofyear date
 
 -- | For given date d find month-long interval that starts on nth day of month
@@ -606,13 +606,13 @@ nthdayofyearcontaining m md date
 -- >>> nthdayofmonthcontaining 30 wed22nd
 -- 2017-10-30
 nthdayofmonthcontaining :: MonthDay -> Day -> Day
-nthdayofmonthcontaining md date
+nthdayofmonthcontaining mdy date
   -- PARTIAL:
-  | not (validDay md) = error' $ "nthdayofmonthcontaining: invalid day "  ++show md
+  | not (validDay mdy) = error' $ "nthdayofmonthcontaining: invalid day "  ++show mdy
   | nthOfSameMonth <= date = nthOfSameMonth
   | otherwise = nthOfPrevMonth
-  where nthOfSameMonth = nthdayofmonth md s
+  where nthOfSameMonth = nthdayofmonth mdy s
-        nthOfPrevMonth = nthdayofmonth md $ prevmonth s
+        nthOfPrevMonth = nthdayofmonth mdy $ prevmonth s
         s = startofmonth date
 
 -- | For given date d find week-long interval that starts on nth day of week
@@ -807,8 +807,8 @@ yyyymmdd :: TextParser m SmartDate
 yyyymmdd = do
   y <- read <$> count 4 digitChar
   m <- read <$> count 2 digitChar
-  md <- optional $ read <$> count 2 digitChar
+  mdy <- optional $ read <$> count 2 digitChar
-  case md of
+  case mdy of
       Nothing -> failIfInvalidDate $ SmartAssumeStart y (Just m)
       Just d  -> maybe (Fail.fail $ showBadDate y m d) (return . SmartCompleteDate) $
                    fromGregorianValid y m d
@@ -1080,19 +1080,19 @@ tests_Dates = testGroup "Dates"
             ]
 
   , testCase "match dayOfWeek" $ do
-      let dayofweek n s = splitspan (nthdayofweekcontaining n) (\w -> (if w == 0 then id else applyN (n-1) nextday . applyN (fromInteger w) nextweek)) 1 s
+      let dayofweek n = splitspan (nthdayofweekcontaining n) (\w -> (if w == 0 then id else applyN (n-1) nextday . applyN (fromInteger w) nextweek)) 1
-          match ds day = splitSpan (DaysOfWeek [day]) ds @?= dayofweek day ds
+          matchdow ds day = splitSpan (DaysOfWeek [day]) ds @?= dayofweek day ds
           ys2021 = fromGregorian 2021 01 01
           ye2021 = fromGregorian 2021 12 31
           ys2022 = fromGregorian 2022 01 01
-      mapM_ (match (DateSpan (Just ys2021) (Just ye2021))) [1..7]
+      mapM_ (matchdow (DateSpan (Just ys2021) (Just ye2021))) [1..7]
-      mapM_ (match (DateSpan (Just ys2021) (Just ys2022))) [1..7]
+      mapM_ (matchdow (DateSpan (Just ys2021) (Just ys2022))) [1..7]
-      mapM_ (match (DateSpan (Just ye2021) (Just ys2022))) [1..7]
+      mapM_ (matchdow (DateSpan (Just ye2021) (Just ys2022))) [1..7]
 
-      mapM_ (match (DateSpan (Just ye2021) Nothing)) [1..7]
+      mapM_ (matchdow (DateSpan (Just ye2021) Nothing)) [1..7]
-      mapM_ (match (DateSpan (Just ys2022) Nothing)) [1..7]
+      mapM_ (matchdow (DateSpan (Just ys2022) Nothing)) [1..7]
 
-      mapM_ (match (DateSpan Nothing (Just ye2021))) [1..7]
+      mapM_ (matchdow (DateSpan Nothing (Just ye2021))) [1..7]
-      mapM_ (match (DateSpan Nothing (Just ys2022))) [1..7]
+      mapM_ (matchdow (DateSpan Nothing (Just ys2022))) [1..7]
 
   ]

hledger-lib/Hledger/Data/Errors.hs

@@ -111,24 +111,24 @@ makePostingAccountErrorExcerpt :: Posting -> (FilePath, Int, Maybe (Int, Maybe I
 makePostingAccountErrorExcerpt p = makePostingErrorExcerpt p finderrcols
   where
     -- Calculate columns suitable for highlighting the synthetic excerpt.
-    finderrcols p _ _ = Just (col, Just col2)
+    finderrcols p' _ _ = Just (col, Just col2)
       where
-        col = 5 + if isVirtual p then 1 else 0
+        col = 5 + if isVirtual p' then 1 else 0
-        col2 = col + T.length (paccount p) - 1
+        col2 = col + T.length (paccount p') - 1
 
 -- | From the given posting, make an error excerpt showing the transaction with
 -- the balance assertion highlighted.
 makeBalanceAssertionErrorExcerpt :: Posting -> (FilePath, Int, Maybe (Int, Maybe Int), Text)
 makeBalanceAssertionErrorExcerpt p = makePostingErrorExcerpt p finderrcols
   where
-    finderrcols p t trendered = Just (col, Just col2)
+    finderrcols p' t trendered = Just (col, Just col2)
       where
         -- Analyse the rendering to find the columns to highlight.
         tlines = dbg5 "tlines" $ max 1 $ length $ T.lines $ tcomment t  -- transaction comment can generate extra lines
         (col, col2) =
           let def = (5, maximum (map T.length $ T.lines trendered))  -- fallback: underline whole posting. Shouldn't happen.
           in
-            case transactionFindPostingIndex (==p) t of
+            case transactionFindPostingIndex (==p') t of
               Nothing  -> def
               Just idx -> fromMaybe def $ do
                 let
@@ -136,9 +136,9 @@ makeBalanceAssertionErrorExcerpt p = makePostingErrorExcerpt p finderrcols
                   beforepslines = dbg5 "beforepslines" $ sum $ map (max 1 . length . T.lines . pcomment) beforeps   -- posting comment can generate extra lines (assume only one commodity shown)
                 assertionline <- dbg5 "assertionline" $ headMay $ drop (tlines + beforepslines) $ T.lines trendered
                 let
-                  col2 = T.length assertionline
+                  col2' = T.length assertionline
                   l = dropWhile (/= '=') $ reverse $ T.unpack assertionline
                   l' = dropWhile (`elem` ['=','*']) l
-                  col = length l' + 1
+                  col' = length l' + 1
-                return (col, col2)
+                return (col', col2')
 

hledger-lib/Hledger/Data/Journal.hs

@@ -252,14 +252,14 @@ dbgJournalAcctDeclOrder prefix
   where
     showAcctDeclsSummary :: [(AccountName,AccountDeclarationInfo)] -> String
     showAcctDeclsSummary adis
-      | length adis < (2*num+2) = "[" <> showadis adis <> "]"
+      | length adis < (2*n+2) = "[" <> showadis adis <> "]"
       | otherwise =
-          "[" <> showadis (take num adis) <> " ... " <> showadis (takelast num adis) <> "]"
+          "[" <> showadis (take n adis) <> " ... " <> showadis (takelast n adis) <> "]"
       where
-        num = 3
+        n = 3
         showadis = intercalate ", " . map showadi
         showadi (a,adi) = "("<>show (adideclarationorder adi)<>","<>T.unpack a<>")"
-        takelast n = reverse . take n . reverse
+        takelast n' = reverse . take n' . reverse
 
 instance Default Journal where
   def = nulljournal
@@ -405,7 +405,7 @@ journalAccountTags Journal{jdeclaredaccounttags} a = M.findWithDefault [] a jdec
 -- | Which tags are in effect for this account, including tags inherited from parent accounts ?
 journalInheritedAccountTags :: Journal -> AccountName -> [Tag]
 journalInheritedAccountTags j a =
-  foldl' (\ts a -> ts `union` journalAccountTags j a) [] as
+  foldl' (\ts a' -> ts `union` journalAccountTags j a') [] as
   where
     as = a : parentAccountNames a
 -- PERF: cache in journal ?

hledger-lib/Hledger/Data/JournalChecks.hs

@@ -116,15 +116,15 @@ journalCheckCommodities j = mapM_ checkcommodities (journalPostings j)
         --     assets      "C $" -1 @ $ 2
         --                 ^^^^^^^^^^^^^^
         -- XXX refine this region when it's easy
-        finderrcols p t txntxt =
+        finderrcols p' t txntxt =
-          case transactionFindPostingIndex (==p) t of
+          case transactionFindPostingIndex (==p') t of
             Nothing     -> Nothing
             Just pindex -> Just (amtstart, Just amtend)
               where
                 tcommentlines = max 0 (length (T.lines $ tcomment t) - 1)
                 errrelline = 1 + tcommentlines + pindex   -- XXX doesn't count posting coment lines
                 errline = fromMaybe "" (T.lines txntxt `atMay` (errrelline-1))
-                acctend = 4 + T.length (paccount p) + if isVirtual p then 2 else 0
+                acctend = 4 + T.length (paccount p') + if isVirtual p' then 2 else 0
                 amtstart = acctend + (T.length $ T.takeWhile isSpace $ T.drop acctend errline) + 1
                 amtend = amtstart + (T.length $ T.stripEnd $ T.takeWhile (/=';') $ T.drop amtstart errline)
 
@@ -151,10 +151,10 @@ journalCheckPayees j = mapM_ checkpayee (jtxns j)
         -- Calculate columns suitable for highlighting the excerpt.
         -- We won't show these in the main error line as they aren't
         -- accurate for the actual data.
-        finderrcols t = Just (col, Just col2)
+        finderrcols t' = Just (col, Just col2)
           where
-            col  = T.length (showTransactionLineFirstPart t) + 2
+            col  = T.length (showTransactionLineFirstPart t') + 2
-            col2 = col + T.length (transactionPayee t) - 1
+            col2 = col + T.length (transactionPayee t') - 1
 
 ----------
 

hledger-lib/Hledger/Data/JournalChecks/Ordereddates.hs

@@ -20,10 +20,9 @@ journalCheckOrdereddates whichdate j = do
     -- note, relying on txns always being sorted by file here
     txnsbyfile = groupBy (\t1 t2 -> transactionFile t1 == transactionFile t2) $ jtxns j
     getdate = transactionDateOrDate2 whichdate
-    compare a b = getdate a <= getdate b
+    compare' a b = getdate a <= getdate b
-  either Left (const $ Right ()) $ 
+  (const $ Right ()) =<< (forM txnsbyfile $ \ts ->
-   forM txnsbyfile $ \ts ->
+    case checkTransactions compare' ts of
-    case checkTransactions compare ts of
       FoldAcc{fa_previous=Nothing} -> Right ()
       FoldAcc{fa_error=Nothing}    -> Right ()
       FoldAcc{fa_error=Just t, fa_previous=Just tprev} -> Left $ printf
@@ -37,7 +36,7 @@ journalCheckOrdereddates whichdate j = do
           -- separate the two excerpts by a space-beginning line to help flycheck-hledger parse them
           ex = T.unlines [textChomp ex1, T.pack " ", textChomp ex2]
           finderrcols _t = Just (1, Just 10)
-          datenum   = if whichdate==SecondaryDate then "2" else ""
+          datenum   = if whichdate==SecondaryDate then "2" else "")
 
 data FoldAcc a b = FoldAcc
  { fa_error    :: Maybe a
@@ -46,11 +45,11 @@ data FoldAcc a b = FoldAcc
 
 checkTransactions :: (Transaction -> Transaction -> Bool)
   -> [Transaction] -> FoldAcc Transaction Transaction
-checkTransactions compare = foldWhile f FoldAcc{fa_error=Nothing, fa_previous=Nothing}
+checkTransactions compare' = foldWhile f FoldAcc{fa_error=Nothing, fa_previous=Nothing}
   where
     f current acc@FoldAcc{fa_previous=Nothing} = acc{fa_previous=Just current}
     f current acc@FoldAcc{fa_previous=Just previous} =
-      if compare previous current
+      if compare' previous current
       then acc{fa_previous=Just current}
       else acc{fa_error=Just current}
 
@@ -58,5 +57,5 @@ foldWhile :: (a -> FoldAcc a b -> FoldAcc a b) -> FoldAcc a b -> [a] -> FoldAcc
 foldWhile _ acc [] = acc
 foldWhile fold acc (a:as) =
   case fold a acc of
-   acc@FoldAcc{fa_error=Just _} -> acc
+   acc'@FoldAcc{fa_error=Just _} -> acc'
-   acc -> foldWhile fold acc as
+   acc' -> foldWhile fold acc' as

hledger-lib/Hledger/Data/JournalChecks/Uniqueleafnames.hs

@@ -1,4 +1,3 @@
-{-# LANGUAGE NamedFieldPuns    #-}
 {-# LANGUAGE OverloadedStrings #-}
 
 module Hledger.Data.JournalChecks.Uniqueleafnames (
@@ -43,12 +42,12 @@ journalCheckUniqueleafnames j = do
             (f,l,_,ex2) = makePostingErrorExcerpt p2 finderrcols
             -- separate the two excerpts by a space-beginning line to help flycheck-hledger parse them
             ex = T.unlines [textChomp ex1, T.pack " ...", textChomp ex2]
-            finderrcols p _ _ = Just (col, Just col2)
+            finderrcols p' _ _ = Just (col, Just col2)
               where
-                a = paccount p
+                a = paccount p'
                 alen = T.length a
                 llen = T.length $ accountLeafName a
-                col = 5 + (if isVirtual p then 1 else 0) + alen - llen
+                col = 5 + (if isVirtual p' then 1 else 0) + alen - llen
                 col2 = col + llen - 1
             accts = T.unlines fulls
 

hledger-lib/Hledger/Data/Period.hs

@@ -59,7 +59,7 @@ periodAsDateSpan (QuarterPeriod y q) = DateSpan (Just $ fromGregorian y m 1) (Ju
   where
     (y', q') | q==4      = (y+1,1)
              | otherwise = (y,q+1)
-    quarterAsMonth q = (q-1) * 3 + 1
+    quarterAsMonth q2 = (q2-1) * 3 + 1
     m  = quarterAsMonth q
     m' = quarterAsMonth q'
 periodAsDateSpan (YearPeriod y) = DateSpan (Just $ fromGregorian y 1 1) (Just $ fromGregorian (y+1) 1 1)

hledger-lib/Hledger/Data/PeriodicTransaction.hs

@@ -41,7 +41,7 @@ _ptgen str = do
           nullperiodictransaction{ ptperiodexpr=t , ptspan=s, ptinterval=i, ptpostings=["a" `post` usd 1] }
           nulldatespan
 
-_ptgenspan str span = do
+_ptgenspan str spn = do
   let
     t = T.pack str
     (i,s) = parsePeriodExpr' nulldate t
@@ -51,7 +51,7 @@ _ptgenspan str span = do
       mapM_ (T.putStr . showTransaction) $
         runPeriodicTransaction
           nullperiodictransaction{ ptperiodexpr=t , ptspan=s, ptinterval=i, ptpostings=["a" `post` usd 1] }
-          span
+          spn
 
 --deriving instance Show PeriodicTransaction
 -- for better pretty-printing:

hledger-lib/Hledger/Data/Posting.hs

@@ -86,7 +86,7 @@ import Data.Time.Calendar (Day)
 import Safe (maximumBound)
 import Text.DocLayout (realLength)
 
-import Text.Tabular.AsciiWide
+import Text.Tabular.AsciiWide hiding (render)
 
 import Hledger.Utils
 import Hledger.Data.Types
@@ -427,7 +427,7 @@ postingToCost styles ToCost         p
     | "_conversion-matched" `elem` map fst (ptags p) && noCost = Nothing
     | otherwise = Just $ postingTransformAmount (styleMixedAmount styles . mixedAmountCost) p
   where
-    noCost = null . filter (isJust . aprice) . amountsRaw $ pamount p
+    noCost = (not . any (isJust . aprice) . amountsRaw) $ pamount p
 
 -- | Generate inferred equity postings from a 'Posting' using transaction prices.
 -- Make sure not to generate equity postings when there are already matched

hledger-lib/Hledger/Data/StringFormat.hs

@@ -4,7 +4,6 @@
 
 {-# LANGUAGE FlexibleContexts  #-}
 {-# LANGUAGE OverloadedStrings #-}
-{-# LANGUAGE PackageImports    #-}
 {-# LANGUAGE TypeFamilies      #-}
 
 module Hledger.Data.StringFormat (
@@ -155,7 +154,7 @@ formatStringTester fs value expected = actual @?= expected
   where
     actual = case fs of
       FormatLiteral l                 -> formatText False Nothing Nothing l
-      FormatField leftJustify min max _ -> formatText leftJustify min max value
+      FormatField leftJustify mn mx _ -> formatText leftJustify mn mx value
 
 tests_StringFormat = testGroup "StringFormat" [
 

hledger-lib/Hledger/Data/Timeclock.hs

@@ -139,8 +139,8 @@ entryFromTimeclockInOut i o
       -- since otherwise it will often have large recurring decimal parts which (since 1.21)
       -- print would display all 255 digits of. timeclock amounts have one second resolution,
       -- so two decimal places is precise enough (#1527).
-      amount   = mixedAmount $ setAmountInternalPrecision 2 $ hrs hours
+      amt   = mixedAmount $ setAmountInternalPrecision 2 $ hrs hours
-      ps       = [posting{paccount=acctname, pamount=amount, ptype=VirtualPosting, ptransaction=Just t}]
+      ps       = [posting{paccount=acctname, pamount=amt, ptype=VirtualPosting, ptransaction=Just t}]
 
 
 -- tests

hledger-lib/Hledger/Data/Transaction.hs

@@ -10,7 +10,6 @@ tags.
 {-# LANGUAGE MultiWayIf        #-}
 {-# LANGUAGE NamedFieldPuns    #-}
 {-# LANGUAGE OverloadedStrings #-}
-{-# LANGUAGE TupleSections     #-}
 
 module Hledger.Data.Transaction
 ( -- * Transaction
@@ -250,8 +249,8 @@ transactionAddPricesFromEquity acctTypes t = first (annotateErrorWithTransaction
       | isConversion p = Right ((cs, others),      Just np)
       | hasPrice p     = Right ((cs, (np:ps, os)), Nothing)
       | otherwise      = Right ((cs, (ps, np:os)), Nothing)
-    select np@(_, p) ((cs, others), Just last)
+    select np@(_, p) ((cs, others), Just lst)
-      | isConversion p = Right (((last, np):cs, others), Nothing)
+      | isConversion p = Right (((lst, np):cs, others), Nothing)
       | otherwise      = Left "Conversion postings must occur in adjacent pairs"
 
     -- Given a pair of indexed conversion postings, and a state consisting of lists of
@@ -267,7 +266,7 @@ transactionAddPricesFromEquity acctTypes t = first (annotateErrorWithTransaction
         ca1 <- postingAmountNoPrice cp1
         ca2 <- postingAmountNoPrice cp2
         let -- The function to add transaction prices and tag postings in the indexed list of postings
-            transformPostingF np pricep = \(n, p) ->
+            transformPostingF np pricep (n,p) =
               (n, if | n == np            -> pricep `postingAddTags` [("_price-matched","")]
                      | n == n1 || n == n2 -> p      `postingAddTags` [("_conversion-matched","")]
                      | otherwise          -> p)

hledger-lib/Hledger/Query.hs

@@ -67,7 +67,7 @@ module Hledger.Query (
   matchesTags,
   matchesPriceDirective,
   words'',
-  prefixes,
+  queryprefixes,
   -- * tests
   tests_Query
 )
@@ -167,7 +167,7 @@ data QueryOpt = QueryOptInAcctOnly AccountName  -- ^ show an account register fo
 -- >>> parseQuery nulldate "\"expenses:dining out\""
 -- Right (Acct (RegexpCI "expenses:dining out"),[])
 parseQuery :: Day -> T.Text -> Either String (Query,[QueryOpt])
-parseQuery d = parseQueryList d . words'' prefixes
+parseQuery d = parseQueryList d . words'' queryprefixes
 
 -- | Convert a list of query expression containing to a query and zero
 -- or more query options; or return an error message if query parsing fails.
@@ -234,8 +234,8 @@ words'' prefixes = fromparse . parsewith maybeprefixedquotedphrases -- XXX
 
 -- XXX
 -- keep synced with patterns below, excluding "not"
-prefixes :: [T.Text]
+queryprefixes :: [T.Text]
-prefixes = map (<>":") [
+queryprefixes = map (<>":") [
      "inacctonly"
     ,"inacct"
     ,"amt"
@@ -285,10 +285,10 @@ parseQueryTerm _ (T.stripPrefix "note:" -> Just s) = Left <$> noteTag (Just s)
 parseQueryTerm _ (T.stripPrefix "acct:" -> Just s) = Left . Acct <$> toRegexCI s
 parseQueryTerm d (T.stripPrefix "date2:" -> Just s) =
         case parsePeriodExpr d s of Left e         -> Left $ "\"date2:"++T.unpack s++"\" gave a "++showDateParseError e
-                                    Right (_,span) -> Right $ Left $ Date2 span
+                                    Right (_,spn) -> Right $ Left $ Date2 spn
 parseQueryTerm d (T.stripPrefix "date:" -> Just s) =
         case parsePeriodExpr d s of Left e         -> Left $ "\"date:"++T.unpack s++"\" gave a "++showDateParseError e
-                                    Right (_,span) -> Right $ Left $ Date span
+                                    Right (_,spn) -> Right $ Left $ Date spn
 parseQueryTerm _ (T.stripPrefix "status:" -> Just s) =
         case parseStatus s of Left e   -> Left $ "\"status:"++T.unpack s++"\" gave a parse error: " ++ e
                               Right st -> Right $ Left $ StatusQ st
@@ -412,9 +412,9 @@ truestrings = ["1"]
 -- * modifying
 
 simplifyQuery :: Query -> Query
-simplifyQuery q =
+simplifyQuery q0 =
-  let q' = simplify q
+  let q1 = simplify q0
-  in if q' == q then q else simplifyQuery q'
+  in if q1 == q0 then q0 else simplifyQuery q1
   where
     simplify (And []) = Any
     simplify (And [q]) = simplify q
@@ -455,7 +455,7 @@ filterQuery' p q = if p q then q else Any
 -- (Since 1.24.1, might be merged into filterQuery in future.)
 -- XXX Semantics not completely clear.
 filterQueryOrNotQuery :: (Query -> Bool) -> Query -> Query
-filterQueryOrNotQuery p = simplifyQuery . filterQueryOrNotQuery' p
+filterQueryOrNotQuery p0 = simplifyQuery . filterQueryOrNotQuery' p0
   where
     filterQueryOrNotQuery' :: (Query -> Bool) -> Query -> Query
     filterQueryOrNotQuery' p (And qs)      = And $ map (filterQueryOrNotQuery p) qs
@@ -584,7 +584,7 @@ queryEndDate False (Date (DateSpan _ (Just d))) = Just d
 queryEndDate True (Date2 (DateSpan _ (Just d))) = Just d
 queryEndDate _ _ = Nothing
 
-queryTermDateSpan (Date span) = Just span
+queryTermDateSpan (Date spn) = Just spn
 queryTermDateSpan _ = Nothing
 
 -- | What date span (or with a true argument, what secondary date span) does this query specify ?
@@ -594,8 +594,8 @@ queryTermDateSpan _ = Nothing
 queryDateSpan :: Bool -> Query -> DateSpan
 queryDateSpan secondary (Or qs)  = spansUnion     $ map (queryDateSpan secondary) qs
 queryDateSpan secondary (And qs) = spansIntersect $ map (queryDateSpan secondary) qs
-queryDateSpan _     (Date span)  = span
+queryDateSpan _     (Date spn)  = spn
-queryDateSpan True (Date2 span)  = span
+queryDateSpan True (Date2 spn)  = spn
 queryDateSpan _ _                = nulldatespan
 
 -- | What date span does this query specify, treating primary and secondary dates as equivalent ?
@@ -605,8 +605,8 @@ queryDateSpan _ _                = nulldatespan
 queryDateSpan' :: Query -> DateSpan
 queryDateSpan' (Or qs)      = spansUnion     $ map queryDateSpan' qs
 queryDateSpan' (And qs)     = spansIntersect $ map queryDateSpan' qs
-queryDateSpan' (Date span)  = span
+queryDateSpan' (Date spn)  = spn
-queryDateSpan' (Date2 span) = span
+queryDateSpan' (Date2 spn) = spn
 queryDateSpan' _            = nulldatespan
 
 -- | What is the earliest of these dates, where Nothing is earliest ?
@@ -732,16 +732,16 @@ matchesPosting (And qs) p = all (`matchesPosting` p) qs
 matchesPosting (Code r) p = maybe False (regexMatchText r . tcode) $ ptransaction p
 matchesPosting (Desc r) p = maybe False (regexMatchText r . tdescription) $ ptransaction p
 matchesPosting (Acct r) p = matches p || maybe False matches (poriginal p) where matches = regexMatchText r . paccount
-matchesPosting (Date span) p = span `spanContainsDate` postingDate p
+matchesPosting (Date spn) p = spn `spanContainsDate` postingDate p
-matchesPosting (Date2 span) p = span `spanContainsDate` postingDate2 p
+matchesPosting (Date2 spn) p = spn `spanContainsDate` postingDate2 p
 matchesPosting (StatusQ s) p = postingStatus p == s
 matchesPosting (Real v) p = v == isReal p
 matchesPosting q@(Depth _) Posting{paccount=a} = q `matchesAccount` a
 matchesPosting q@(Amt _ _) Posting{pamount=as} = q `matchesMixedAmount` as
 matchesPosting (Sym r) Posting{pamount=as} = any (matchesCommodity (Sym r) . acommodity) $ amountsRaw as
 matchesPosting (Tag n v) p = case (reString n, v) of
-  ("payee", Just v) -> maybe False (regexMatchText v . transactionPayee) $ ptransaction p
+  ("payee", Just v') -> maybe False (regexMatchText v' . transactionPayee) $ ptransaction p
-  ("note", Just v) -> maybe False (regexMatchText v . transactionNote) $ ptransaction p
+  ("note", Just v') -> maybe False (regexMatchText v' . transactionNote) $ ptransaction p
   (_, mv) -> matchesTags n mv $ postingAllTags p
 matchesPosting (Type _) _ = False
 
@@ -765,17 +765,17 @@ matchesTransaction (And qs) t = all (`matchesTransaction` t) qs
 matchesTransaction (Code r) t = regexMatchText r $ tcode t
 matchesTransaction (Desc r) t = regexMatchText r $ tdescription t
 matchesTransaction q@(Acct _) t = any (q `matchesPosting`) $ tpostings t
-matchesTransaction (Date span) t = spanContainsDate span $ tdate t
+matchesTransaction (Date spn) t = spanContainsDate spn $ tdate t
-matchesTransaction (Date2 span) t = spanContainsDate span $ transactionDate2 t
+matchesTransaction (Date2 spn) t = spanContainsDate spn $ transactionDate2 t
 matchesTransaction (StatusQ s) t = tstatus t == s
 matchesTransaction (Real v) t = v == hasRealPostings t
 matchesTransaction q@(Amt _ _) t = any (q `matchesPosting`) $ tpostings t
 matchesTransaction (Depth d) t = any (Depth d `matchesPosting`) $ tpostings t
 matchesTransaction q@(Sym _) t = any (q `matchesPosting`) $ tpostings t
 matchesTransaction (Tag n v) t = case (reString n, v) of
-  ("payee", Just v) -> regexMatchText v $ transactionPayee t
+  ("payee", Just v') -> regexMatchText v' $ transactionPayee t
-  ("note", Just v) -> regexMatchText v $ transactionNote t
+  ("note", Just v') -> regexMatchText v' $ transactionNote t
-  (_, v) -> matchesTags n v $ transactionAllTags t
+  (_, v') -> matchesTags n v' $ transactionAllTags t
 matchesTransaction (Type _) _ = False
 
 -- | Like matchesTransaction, but if the journal's account types are provided,
@@ -821,7 +821,7 @@ matchesPriceDirective (Or qs) p     = any (`matchesPriceDirective` p) qs
 matchesPriceDirective (And qs) p    = all (`matchesPriceDirective` p) qs
 matchesPriceDirective q@(Amt _ _) p = matchesAmount q (pdamount p)
 matchesPriceDirective q@(Sym _) p   = matchesCommodity q (pdcommodity p)
-matchesPriceDirective (Date span) p = spanContainsDate span (pddate p)
+matchesPriceDirective (Date spn) p = spanContainsDate spn (pddate p)
 matchesPriceDirective _ _           = True
 
 
@@ -854,8 +854,8 @@ tests_Query = testGroup "Query" [
       (words'' [] "not:'a b'")             @?= ["not:a b"]
       (words'' [] "'not:a b'")             @?= ["not:a b"]
       (words'' ["desc:"] "not:desc:'a b'") @?= ["not:desc:a b"]
-      (words'' prefixes "\"acct:expenses:autres d\233penses\"") @?= ["acct:expenses:autres d\233penses"]
+      (words'' queryprefixes "\"acct:expenses:autres d\233penses\"") @?= ["acct:expenses:autres d\233penses"]
-      (words'' prefixes "\"")              @?= ["\""]
+      (words'' queryprefixes "\"")              @?= ["\""]
 
   ,testCase "filterQuery" $ do
      filterQuery queryIsDepth Any       @?= Any

hledger-lib/Hledger/Read.hs

@@ -108,13 +108,13 @@ defaultJournal = defaultJournalPath >>= runExceptT . readJournalFile definputopt
 defaultJournalPath :: IO String
 defaultJournalPath = do
   s <- envJournalPath
-  if null s then defaultJournalPath else return s
+  if null s then defpath else return s
     where
       envJournalPath =
         getEnv journalEnvVar
          `C.catch` (\(_::C.IOException) -> getEnv journalEnvVar2
                                             `C.catch` (\(_::C.IOException) -> return ""))
-      defaultJournalPath = do
+      defpath = do
         home <- getHomeDirectory `C.catch` (\(_::C.IOException) -> return "")
         return $ home </> journalDefaultFilename
 

hledger-lib/Hledger/Read/Common.hs

@@ -195,7 +195,7 @@ rawOptsToInputOpts day rawopts =
         argsquery = lefts . rights . map (parseQueryTerm day) $ querystring_ ropts
         datequery = simplifyQuery . filterQuery queryIsDate . And $ queryFromFlags ropts : argsquery
 
-        commodity_styles = either err id $ commodityStyleFromRawOpts rawopts
+        styles = either err id $ commodityStyleFromRawOpts rawopts
           where err e = error' $ "could not parse commodity-style: '" ++ e ++ "'"  -- PARTIAL:
 
     in definputopts{
@@ -215,7 +215,7 @@ rawOptsToInputOpts day rawopts =
       ,balancingopts_     = defbalancingopts{
                                  ignore_assertions_ = boolopt "ignore-assertions" rawopts
                                , infer_transaction_prices_ = not noinferprice
-                               , commodity_styles_  = Just commodity_styles
+                               , commodity_styles_  = Just styles
                                }
       ,strict_            = boolopt "strict" rawopts
       ,_ioDay             = day
@@ -446,8 +446,8 @@ journalAddFile f j@Journal{jfiles=fs} = j{jfiles=fs++[f]}
 -- A version of `match` that is strict in the returned text
 match' :: TextParser m a -> TextParser m (Text, a)
 match' p = do
-  (!txt, p) <- match p
+  (!txt, p') <- match p
-  pure (txt, p)
+  pure (txt, p')
 
 --- ** parsers
 --- *** transaction bits
@@ -514,9 +514,9 @@ datep' mYear = do
         Just date -> pure $! date
 
     partialDate :: Int -> Maybe Year -> Month -> Char -> MonthDay -> TextParser m Day
-    partialDate startOffset mYear month sep day = do
+    partialDate startOffset myr month sep day = do
       endOffset <- getOffset
-      case mYear of
+      case myr of
         Just year ->
           case fromGregorianValid year month day of
             Nothing -> customFailure $ parseErrorAtRegion startOffset endOffset $
@@ -611,12 +611,12 @@ yearorintp = do
 modifiedaccountnamep :: JournalParser m AccountName
 modifiedaccountnamep = do
   parent  <- getParentAccount
-  aliases <- getAccountAliases
+  als     <- getAccountAliases
   -- off1    <- getOffset
   a       <- lift accountnamep
   -- off2    <- getOffset
   -- XXX or accountNameApplyAliasesMemo ? doesn't seem to make a difference (retest that function)
-  case accountNameApplyAliases aliases $ joinAccountNames parent a of
+  case accountNameApplyAliases als $ joinAccountNames parent a of
     Right a' -> return $! a'
     -- should not happen, regexaliasp will have displayed a better error already:
     -- (XXX why does customFailure cause error to be displayed there, but not here ?)
@@ -660,12 +660,12 @@ singlespacednoncommenttext1p = singlespacedtextsatisfying1p (not . isSameLineCom
 -- | Parse non-empty, single-spaced text starting and ending with non-whitespace,
 -- where all characters satisfy the given predicate.
 singlespacedtextsatisfying1p :: (Char -> Bool) -> TextParser m T.Text
-singlespacedtextsatisfying1p pred = do
+singlespacedtextsatisfying1p f = do
   firstPart <- partp
   otherParts <- many $ try $ singlespacep *> partp
   pure $! T.unwords $ firstPart : otherParts
   where
-    partp = takeWhile1P Nothing (\c -> pred c && not (isSpace c))
+    partp = takeWhile1P Nothing (\c -> f c && not (isSpace c))
 
 -- | Parse one non-newline whitespace character that is not followed by another one.
 singlespacep :: TextParser m ()
@@ -708,20 +708,20 @@ amountp = amountpwithmultiplier False
 amountpwithmultiplier :: Bool -> JournalParser m Amount
 amountpwithmultiplier mult = label "amount" $ do
   let spaces = lift $ skipNonNewlineSpaces
-  amount <- amountwithoutpricep mult <* spaces
+  amt <- amountwithoutpricep mult <* spaces
   (mprice, _elotprice, _elotdate) <- runPermutation $
-    (,,) <$> toPermutationWithDefault Nothing (Just <$> priceamountp amount <* spaces)
+    (,,) <$> toPermutationWithDefault Nothing (Just <$> priceamountp amt <* spaces)
          <*> toPermutationWithDefault Nothing (Just <$> lotpricep <* spaces)
          <*> toPermutationWithDefault Nothing (Just <$> lotdatep <* spaces)
-  pure $ amount { aprice = mprice }
+  pure $ amt { aprice = mprice }
 
 amountpnolotpricesp :: JournalParser m Amount
 amountpnolotpricesp = label "amount" $ do
   let spaces = lift $ skipNonNewlineSpaces
-  amount <- amountwithoutpricep False
+  amt <- amountwithoutpricep False
   spaces
-  mprice <- optional $ priceamountp amount <* spaces
+  mprice <- optional $ priceamountp amt <* spaces
-  pure $ amount { aprice = mprice }
+  pure $ amt { aprice = mprice }
 
 amountwithoutpricep :: Bool -> JournalParser m Amount
 amountwithoutpricep mult = do
@@ -1094,8 +1094,8 @@ data DigitGrp = DigitGrp {
 
 -- | A custom show instance, showing digit groups as the parser saw them.
 instance Show DigitGrp where
-  show (DigitGrp len num) = "\"" ++ padding ++ numStr ++ "\""
+  show (DigitGrp len n) = "\"" ++ padding ++ numStr ++ "\""
-    where numStr = show num
+    where numStr = show n
           padding = genericReplicate (toInteger len - toInteger (length numStr)) '0'
 
 instance Sem.Semigroup DigitGrp where

hledger-lib/Hledger/Read/CsvReader.hs

@@ -13,9 +13,7 @@ A reader for CSV data, using an extra rules file to help interpret the data.
 --- ** language
 {-# LANGUAGE FlexibleContexts     #-}
 {-# LANGUAGE FlexibleInstances    #-}
-{-# LANGUAGE MultiWayIf           #-}
 {-# LANGUAGE OverloadedStrings    #-}
-{-# LANGUAGE PackageImports       #-}
 {-# LANGUAGE RecordWildCards      #-}
 {-# LANGUAGE ScopedTypeVariables  #-}
 {-# LANGUAGE TypeFamilies         #-}
@@ -38,7 +36,7 @@ where
 
 --- ** imports
 import Control.Applicative        (liftA2)
-import Control.Monad              (unless, when)
+import Control.Monad              (unless, when, void)
 import Control.Monad.Except       (ExceptT(..), liftEither, throwError)
 import qualified Control.Monad.Fail as Fail
 import Control.Monad.IO.Class     (MonadIO, liftIO)
@@ -104,13 +102,13 @@ parse :: InputOpts -> FilePath -> Text -> ExceptT String IO Journal
 parse iopts f t = do
   let rulesfile = mrules_file_ iopts
   readJournalFromCsv rulesfile f t
+  -- apply any command line account aliases. Can fail with a bad replacement pattern.
+  >>= liftEither . journalApplyAliases (aliasesFromOpts iopts)
       -- journalFinalise assumes the journal's items are
       -- reversed, as produced by JournalReader's parser.
       -- But here they are already properly ordered. So we'd
       -- better preemptively reverse them once more. XXX inefficient
-  <&> journalReverse
+      . journalReverse
-  -- apply any command line account aliases. Can fail with a bad replacement pattern.
-  >>= liftEither . journalApplyAliases (aliasesFromOpts iopts)
   >>= journalFinalise iopts{balancingopts_=(balancingopts_ iopts){ignore_assertions_=True}} f t
 
 --- ** reading rules files
@@ -193,14 +191,14 @@ instance ShowErrorComponent String where
 -- Included file paths may be relative to the directory of the provided file path.
 -- This is done as a pre-parse step to simplify the CSV rules parser.
 expandIncludes :: FilePath -> Text -> IO Text
-expandIncludes dir content = mapM (expandLine dir) (T.lines content) >>= return . T.unlines
+expandIncludes dir0 content = mapM (expandLine dir0) (T.lines content) <&> T.unlines
   where
-    expandLine dir line =
+    expandLine dir1 line =
       case line of
-        (T.stripPrefix "include " -> Just f) -> expandIncludes dir' =<< T.readFile f'
+        (T.stripPrefix "include " -> Just f) -> expandIncludes dir2 =<< T.readFile f'
           where
-            f' = dir </> T.unpack (T.dropWhile isSpace f)
+            f' = dir1 </> T.unpack (T.dropWhile isSpace f)
-            dir' = takeDirectory f'
+            dir2 = takeDirectory f'
         _ -> return line
 
 -- | An error-throwing IO action that parses this text as CSV conversion rules
@@ -582,7 +580,7 @@ conditionaltablep = do
   newline
   body <- flip manyTill (lift eolof) $ do
     off <- getOffset
-    m <- matcherp' (char sep >> return ())
+    m <- matcherp' $ void $ char sep
     vs <- T.split (==sep) . T.pack <$> lift restofline
     if (length vs /= length fields)
       then customFailure $ parseErrorAt off $ ((printf "line of conditional table should have %d values, but this one has only %d" (length fields) (length vs)) :: String)
@@ -757,7 +755,7 @@ readJournalFromCsv mrulesfile csvfile csvdata = do
       -- Second, sort by date.
       txns'' = dbg7 "date-sorted csv txns" $ sortBy (comparing tdate) txns'
 
-    liftIO $ when (not rulesfileexists) $ do
+    liftIO $ unless rulesfileexists $ do
       dbg1IO "creating conversion rules file" rulesfile
       T.writeFile rulesfile rulestext
 
@@ -804,7 +802,7 @@ validateCsv :: CsvRules -> Int -> CSV -> Either String [CsvRecord]
 validateCsv rules numhdrlines = validate . applyConditionalSkips . drop numhdrlines . filternulls
   where
     filternulls = filter (/=[""])
-    skipCount r =
+    skipnum r =
       case (getEffectiveAssignment rules r "end", getEffectiveAssignment rules r "skip") of
         (Nothing, Nothing) -> Nothing
         (Just _, _) -> Just maxBound
@@ -812,7 +810,7 @@ validateCsv rules numhdrlines = validate . applyConditionalSkips . drop numhdrli
         (Nothing, Just x) -> Just (read $ T.unpack x)
     applyConditionalSkips [] = []
     applyConditionalSkips (r:rest) =
-      case skipCount r of
+      case skipnum r of
         Nothing -> r:(applyConditionalSkips rest)
         Just cnt -> applyConditionalSkips (drop (cnt-1) rest)
     validate [] = Right []
@@ -869,15 +867,15 @@ transactionFromCsvRecord sourcepos rules record = t
     field    = hledgerField      rules record :: HledgerFieldName -> Maybe FieldTemplate
     fieldval = hledgerFieldValue rules record :: HledgerFieldName -> Maybe Text
     parsedate = parseDateWithCustomOrDefaultFormats (rule "date-format")
-    mkdateerror datefield datevalue mdateformat = T.unpack $ T.unlines
+    mkdateerror datefield datevalue mdateformat' = T.unpack $ T.unlines
       ["error: could not parse \""<>datevalue<>"\" as a date using date format "
-        <>maybe "\"YYYY/M/D\", \"YYYY-M-D\" or \"YYYY.M.D\"" (T.pack . show) mdateformat
+        <>maybe "\"YYYY/M/D\", \"YYYY-M-D\" or \"YYYY.M.D\"" (T.pack . show) mdateformat'
       ,showRecord record
       ,"the "<>datefield<>" rule is:   "<>(fromMaybe "required, but missing" $ field datefield)
-      ,"the date-format is: "<>fromMaybe "unspecified" mdateformat
+      ,"the date-format is: "<>fromMaybe "unspecified" mdateformat'
       ,"you may need to "
         <>"change your "<>datefield<>" rule, "
-        <>maybe "add a" (const "change your") mdateformat<>" date-format rule, "
+        <>maybe "add a" (const "change your") mdateformat'<>" date-format rule, "
         <>"or "<>maybe "add a" (const "change your") mskip<>" skip rule"
       ,"for m/d/y or d/m/y dates, use date-format %-m/%-d/%Y or date-format %-d/%-m/%Y"
       ]
@@ -894,7 +892,7 @@ transactionFromCsvRecord sourcepos rules record = t
     -- PARTIAL:
     date'       = fromMaybe (error' $ mkdateerror "date" date mdateformat) $ parsedate date
     mdate2      = fieldval "date2"
-    mdate2'     = maybe Nothing (maybe (error' $ mkdateerror "date2" (fromMaybe "" mdate2) mdateformat) Just . parsedate) mdate2
+    mdate2'     = (maybe (error' $ mkdateerror "date2" (fromMaybe "" mdate2) mdateformat) Just . parsedate) =<< mdate2
     status      =
       case fieldval "status" of
         Nothing -> Unmarked
@@ -904,12 +902,12 @@ transactionFromCsvRecord sourcepos rules record = t
               ["error: could not parse \""<>s<>"\" as a cleared status (should be *, ! or empty)"
               ,"the parse error is:      "<>T.pack (customErrorBundlePretty err)
               ]
-    code        = maybe "" singleline $ fieldval "code"
+    code        = maybe "" singleline' $ fieldval "code"
-    description = maybe "" singleline $ fieldval "description"
+    description = maybe "" singleline' $ fieldval "description"
     comment     = maybe "" unescapeNewlines $ fieldval "comment"
     precomment  = maybe "" unescapeNewlines $ fieldval "precomment"
 
-    singleline = T.unwords . filter (not . T.null) . map T.strip . T.lines
+    singleline' = T.unwords . filter (not . T.null) . map T.strip . T.lines
     unescapeNewlines = T.intercalate "\n" . T.splitOn "\\n"
 
     ----------------------------------------------------------------------
@@ -918,7 +916,7 @@ transactionFromCsvRecord sourcepos rules record = t
 
     p1IsVirtual = (accountNamePostingType <$> fieldval "account1") == Just VirtualPosting
     ps = [p | n <- [1..maxpostings]
-         ,let comment  = maybe "" unescapeNewlines $ fieldval ("comment"<> T.pack (show n))
+         ,let cmt  = maybe "" unescapeNewlines $ fieldval ("comment"<> T.pack (show n))
          ,let currency = fromMaybe "" (fieldval ("currency"<> T.pack (show n)) <|> fieldval "currency")
          ,let mamount  = getAmount rules record currency p1IsVirtual n
          ,let mbalance = getBalance rules record currency n
@@ -930,7 +928,7 @@ transactionFromCsvRecord sourcepos rules record = t
                              ,pamount           = fromMaybe missingmixedamt mamount
                              ,ptransaction      = Just t
                              ,pbalanceassertion = mkBalanceAssertion rules record <$> mbalance
-                             ,pcomment          = comment
+                             ,pcomment          = cmt
                              ,ptype             = accountNamePostingType acct
                              }
          ]
@@ -967,7 +965,7 @@ getAmount rules record currency p1IsVirtual n =
     unnumberedfieldnames = ["amount","amount-in","amount-out"]
 
     -- amount field names which can affect this posting
-    fieldnames = map (("amount"<> T.pack(show n))<>) ["","-in","-out"]
+    fieldnames = map (("amount"<> T.pack (show n))<>) ["","-in","-out"]
                  -- For posting 1, also recognise the old amount/amount-in/amount-out names.
                  -- For posting 2, the same but only if posting 1 needs balancing.
                  ++ if n==1 || n==2 && not p1IsVirtual then unnumberedfieldnames else []
@@ -1000,6 +998,37 @@ getAmount rules record currency p1IsVirtual n =
       []      -> Nothing
       [(f,a)] -> Just $ negateIfOut f a
       fs      -> error' . T.unpack . textChomp . T.unlines $  -- PARTIAL:
+          -- PARTIAL:
+          -- PARTIAL:
+          -- PARTIAL:
+          -- PARTIAL:
+          -- PARTIAL:
+          -- PARTIAL:
+          -- PARTIAL:
+          -- PARTIAL:
+          -- PARTIAL:
+          -- PARTIAL:
+          -- PARTIAL:
+          -- PARTIAL:
+          -- PARTIAL:
+          -- PARTIAL:
+          -- PARTIAL:
+          -- PARTIAL:
+          -- PARTIAL:
+          -- PARTIAL:
+          -- PARTIAL:
+          -- PARTIAL:
+          -- PARTIAL:
+          -- PARTIAL:
+          -- PARTIAL:
+          -- PARTIAL:
+          -- PARTIAL:
+          -- PARTIAL:
+          -- PARTIAL:
+          -- PARTIAL:
+          -- PARTIAL:
+          -- PARTIAL:
+          -- PARTIAL:
         ["in CSV rules:"
         ,"While processing " <> showRecord record
         ,"while calculating amount for posting " <> T.pack (show n)
@@ -1038,6 +1067,37 @@ getBalance rules record currency n = do
 parseAmount :: CsvRules -> CsvRecord -> Text -> Text -> MixedAmount
 parseAmount rules record currency s =
     either mkerror mixedAmount $  -- PARTIAL:
+      -- PARTIAL:
+      -- PARTIAL:
+      -- PARTIAL:
+      -- PARTIAL:
+      -- PARTIAL:
+      -- PARTIAL:
+      -- PARTIAL:
+      -- PARTIAL:
+      -- PARTIAL:
+      -- PARTIAL:
+      -- PARTIAL:
+      -- PARTIAL:
+      -- PARTIAL:
+      -- PARTIAL:
+      -- PARTIAL:
+      -- PARTIAL:
+      -- PARTIAL:
+      -- PARTIAL:
+      -- PARTIAL:
+      -- PARTIAL:
+      -- PARTIAL:
+      -- PARTIAL:
+      -- PARTIAL:
+      -- PARTIAL:
+      -- PARTIAL:
+      -- PARTIAL:
+      -- PARTIAL:
+      -- PARTIAL:
+      -- PARTIAL:
+      -- PARTIAL:
+      -- PARTIAL:
     runParser (evalStateT (amountp <* eof) journalparsestate) "" $
     currency <> simplifySign s
   where
@@ -1068,8 +1128,8 @@ parseBalanceAmount rules record currency n s =
                   -- the csv record's line number would be good
   where
     journalparsestate = nulljournal{jparsedecimalmark=parseDecimalMark rules}
-    mkerror n s e = error' . T.unpack $ T.unlines
+    mkerror n' s' e = error' . T.unpack $ T.unlines
-      ["error: could not parse \"" <> s <> "\" as balance"<> T.pack (show n) <> " amount"
+      ["error: could not parse \"" <> s' <> "\" as balance"<> T.pack (show n') <> " amount"
       ,showRecord record
       ,showRules rules record
       -- ,"the default-currency is: "++fromMaybe "unspecified" mdefaultcurrency
@@ -1252,17 +1312,19 @@ replaceCsvFieldReference rules record s = case T.uncons s of
 -- column number, ("date" or "1"), from the given CSV record, if such a field exists.
 csvFieldValue :: CsvRules -> CsvRecord -> CsvFieldName -> Maybe Text
 csvFieldValue rules record fieldname = do
-  fieldindex <- if | T.all isDigit fieldname -> readMay $ T.unpack fieldname
+  fieldindex <-
-                   | otherwise               -> lookup (T.toLower fieldname) $ rcsvfieldindexes rules
+    if T.all isDigit fieldname 
+    then readMay $ T.unpack fieldname
+    else lookup (T.toLower fieldname) $ rcsvfieldindexes rules
   T.strip <$> atMay record (fieldindex-1)
 
 -- | Parse the date string using the specified date-format, or if unspecified
 -- the "simple date" formats (YYYY/MM/DD, YYYY-MM-DD, YYYY.MM.DD, leading
 -- zeroes optional).
 parseDateWithCustomOrDefaultFormats :: Maybe DateFormat -> Text -> Maybe Day
-parseDateWithCustomOrDefaultFormats mformat s = asum $ map parsewith formats
+parseDateWithCustomOrDefaultFormats mformat s = asum $ map parsewith' formats
   where
-    parsewith = flip (parseTimeM True defaultTimeLocale) (T.unpack s)
+    parsewith' = flip (parseTimeM True defaultTimeLocale) (T.unpack s)
     formats = map T.unpack $ maybe
                ["%Y/%-m/%-d"
                ,"%Y-%-m-%-d"
@@ -1299,6 +1361,37 @@ tests_CsvReader = testGroup "CsvReader" [
    ]
   ,testGroup "conditionalblockp" [
     testCase "space after conditional" $ -- #1120
+       -- #1120
+       -- #1120
+       -- #1120
+       -- #1120
+       -- #1120
+       -- #1120
+       -- #1120
+       -- #1120
+       -- #1120
+       -- #1120
+       -- #1120
+       -- #1120
+       -- #1120
+       -- #1120
+       -- #1120
+       -- #1120
+       -- #1120
+       -- #1120
+       -- #1120
+       -- #1120
+       -- #1120
+       -- #1120
+       -- #1120
+       -- #1120
+       -- #1120
+       -- #1120
+       -- #1120
+       -- #1120
+       -- #1120
+       -- #1120
+       -- #1120
       parseWithState' defrules conditionalblockp "if a\n account2 b\n \n" @?=
         (Right $ CB{cbMatchers=[RecordMatcher None $ toRegexCI' "a"],cbAssignments=[("account2","b")]})
 

hledger-lib/Hledger/Read/JournalReader.hs

@@ -261,8 +261,8 @@ includedirectivep = do
   prefixedglob <- T.unpack <$> takeWhileP Nothing (/= '\n') -- don't consume newline yet
   parentoff <- getOffset
   parentpos <- getSourcePos
-  let (mprefix,glob) = splitReaderPrefix prefixedglob
+  let (mprefix,glb) = splitReaderPrefix prefixedglob
-  paths <- getFilePaths parentoff parentpos glob
+  paths <- getFilePaths parentoff parentpos glb
   let prefixedpaths = case mprefix of
         Nothing  -> paths
         Just fmt -> map ((fmt++":")++) paths
@@ -460,8 +460,8 @@ commoditydirectiveonelinep = do
     string "commodity"
     lift skipNonNewlineSpaces1
     off <- getOffset
-    amount <- amountp
+    amt <- amountp
-    pure $ (off, amount)
+    pure $ (off, amt)
   lift skipNonNewlineSpaces
   _ <- lift followingcommentp
   let comm = Commodity{csymbol=acommodity, cformat=Just $ dbg6 "style from commodity directive" astyle}
@@ -489,8 +489,8 @@ commoditydirectivemultilinep = do
   lift skipNonNewlineSpaces1
   sym <- lift commoditysymbolp
   _ <- lift followingcommentp
-  mformat <- lastMay <$> many (indented $ formatdirectivep sym)
+  mfmt <- lastMay <$> many (indented $ formatdirectivep sym)
-  let comm = Commodity{csymbol=sym, cformat=mformat}
+  let comm = Commodity{csymbol=sym, cformat=mfmt}
   modify' (\j -> j{jcommodities=M.insert sym comm $ jcommodities j})
   where
     indented = (lift skipNonNewlineSpaces1 >>)
@@ -674,7 +674,7 @@ periodictransactionp = do
   -- first parsing with 'singlespacedtextp', then "re-parsing" with
   -- 'periodexprp' saves 'periodexprp' from having to respect the single-
   -- and double-space parsing rules
-  (interval, span) <- lift $ reparseExcerpt periodExcerpt $ do
+  (interval, spn) <- lift $ reparseExcerpt periodExcerpt $ do
     pexp <- periodexprp refdate
     (<|>) eof $ do
       offset1 <- getOffset
@@ -687,7 +687,7 @@ periodictransactionp = do
     pure pexp
 
   -- In periodic transactions, the period expression has an additional constraint:
-  case checkPeriodicTransactionStartDate interval span periodtxt of
+  case checkPeriodicTransactionStartDate interval spn periodtxt of
     Just e -> customFailure $ parseErrorAt off e
     Nothing -> pure ()
 
@@ -701,7 +701,7 @@ periodictransactionp = do
   return $ nullperiodictransaction{
      ptperiodexpr=periodtxt
     ,ptinterval=interval
-    ,ptspan=span
+    ,ptspan=spn
     ,ptstatus=status
     ,ptcode=code
     ,ptdescription=description
@@ -767,7 +767,7 @@ postingphelper isPostingRule mTransactionYear = do
     let (ptype, account') = (accountNamePostingType account, textUnbracket account)
     lift skipNonNewlineSpaces
     mult <- if isPostingRule then multiplierp else pure False
-    amount <- optional $ amountpwithmultiplier mult
+    amt <- optional $ amountpwithmultiplier mult
     lift skipNonNewlineSpaces
     massertion <- optional balanceassertionp
     lift skipNonNewlineSpaces
@@ -777,7 +777,7 @@ postingphelper isPostingRule mTransactionYear = do
             , pdate2=mdate2
             , pstatus=status
             , paccount=account'
-            , pamount=maybe missingmixedamt mixedAmount amount
+            , pamount=maybe missingmixedamt mixedAmount amt
             , pcomment=comment
             , ptype=ptype
             , ptags=tags

hledger-lib/Hledger/Read/TimedotReader.hs

@@ -28,7 +28,6 @@ inc.client1   .... .... ..
 
 --- ** language
 {-# LANGUAGE OverloadedStrings #-}
-{-# LANGUAGE PackageImports #-}
 
 --- ** exports
 module Hledger.Read.TimedotReader (
@@ -173,7 +172,7 @@ entryp = do
   lift $ optional $ choice [orgheadingprefixp, skipNonNewlineSpaces1]
   a <- modifiedaccountnamep
   lift skipNonNewlineSpaces
-  hrs <-
+  hours <-
     try (lift followingcommentp >> return 0)
     <|> (lift durationp <*
          (try (lift followingcommentp) <|> (newline >> return "")))
@@ -187,7 +186,7 @@ entryp = do
           tstatus    = Cleared,
           tpostings  = [
             nullposting{paccount=a
-                      ,pamount=mixedAmount $ nullamt{acommodity=c, aquantity=hrs, astyle=s}
+                      ,pamount=mixedAmount $ nullamt{acommodity=c, aquantity=hours, astyle=s}
                       ,ptype=VirtualPosting
                       ,ptransaction=Just t
                       }

hledger-lib/Hledger/Reports/AccountTransactionsReport.hs

@@ -245,8 +245,8 @@ accountTransactionsReportByCommodity tr =
 -- balance amount) components that don't involve the specified
 -- commodity. Other item fields such as the transaction are left unchanged.
 filterAccountTransactionsReportByCommodity :: CommoditySymbol -> AccountTransactionsReport -> AccountTransactionsReport
-filterAccountTransactionsReportByCommodity c =
+filterAccountTransactionsReportByCommodity comm =
-    fixTransactionsReportItemBalances . concatMap (filterTransactionsReportItemByCommodity c)
+    fixTransactionsReportItemBalances . concatMap (filterTransactionsReportItemByCommodity comm)
   where
     filterTransactionsReportItemByCommodity c (t,t2,s,o,a,bal)
       | c `elem` cs = [item']
@@ -261,9 +261,9 @@ filterAccountTransactionsReportByCommodity c =
     fixTransactionsReportItemBalances items = reverse $ i:(go startbal is)
       where
         i:is = reverse items
-        startbal = filterMixedAmountByCommodity c $ triBalance i
+        startbal = filterMixedAmountByCommodity comm $ triBalance i
         go _ [] = []
-        go bal ((t,t2,s,o,amt,_):is) = (t,t2,s,o,amt,bal'):go bal' is
+        go bal ((t,t2,s,o,amt,_):is') = (t,t2,s,o,amt,bal'):go bal' is'
           where bal' = bal `maPlus` amt
 
 -- tests

hledger-lib/Hledger/Reports/BudgetReport.hs

@@ -133,17 +133,17 @@ journalAddBudgetGoalTransactions bopts ropts reportspan j =
             Just d  -> Just d'
               where
                 -- the interval and any date span of the periodic transaction with longest period
-                (interval, span) =
+                (intervl, spn) =
                   case budgetpts of
                     []  -> (Days 1, nulldatespan)
                     pts -> (ptinterval pt, ptspan pt)
                       where pt = maximumBy (comparing ptinterval) pts  -- PARTIAL: maximumBy won't fail
                 -- the natural start of this interval on or before the journal/report start
-                intervalstart = intervalStartBefore interval d
+                intervalstart = intervalStartBefore intervl d
                 -- the natural interval start before the journal/report start,
                 -- or the rule-specified start if later,
                 -- but no later than the journal/report start.
-                d' = min d $ maybe intervalstart (max intervalstart) $ spanStart span
+                d' = min d $ maybe intervalstart (max intervalstart) $ spanStart spn
 
     -- select periodic transactions matching a pattern
     -- (the argument of the (final) --budget option).
@@ -308,11 +308,11 @@ budgetReportAsTable
       | transpose_ = \(Tab.Table rh ch vals) -> Tab.Table ch rh (transpose vals)
       | otherwise  = id
 
-    (accts, rows, totalrows) = (accts, prependcs itemscs (padcells texts), prependcs trcs (padtr trtexts))
+    (accts, rows, totalrows) = (accts', prependcs itemscs (padcells texts), prependcs trcs (padtr trtexts))
       where
         shownitems :: [[(AccountName, WideBuilder, BudgetDisplayRow)]]
         shownitems = (fmap (\i -> fmap (\(cs, cvals) -> (renderacct i, cs, cvals)) . showrow $ rowToBudgetCells i) items)
-        (accts, itemscs, texts) = unzip3 $ concat shownitems
+        (accts', itemscs, texts) = unzip3 $ concat shownitems
 
         showntr    :: [[(WideBuilder, BudgetDisplayRow)]]
         showntr    = [showrow $ rowToBudgetCells tr]
@@ -381,10 +381,8 @@ budgetReportAsTable
       where
         actual' = fromMaybe nullmixedamt actual
 
-        budgetAndPerc b = uncurry zip
+        budgetAndPerc b = 
-          ( showmixed b
+          zip (showmixed b) (fmap (wbFromText . T.pack . show . roundTo 0) <$> percbudget actual' b)
-          , fmap (wbFromText . T.pack . show . roundTo 0) <$> percbudget actual' b
-          )
 
         full
           | Just b <- mbudget = Just <$> budgetAndPerc b
@@ -397,9 +395,9 @@ budgetReportAsTable
             (TB.fromText . flip T.replicate " " $ actualwidth - w) <> b
 
         (totalpercentwidth, totalbudgetwidth) =
-          let totalpercentwidth = if percentwidth == 0 then 0 else percentwidth + 5
+          let totalpercentwidth' = if percentwidth == 0 then 0 else percentwidth + 5
-           in ( totalpercentwidth
+           in ( totalpercentwidth'
-              , if budgetwidth == 0 then 0 else budgetwidth + totalpercentwidth + 3
+              , if budgetwidth == 0 then 0 else budgetwidth + totalpercentwidth' + 3
               )
 
         -- | Display a padded budget string
@@ -446,14 +444,20 @@ budgetReportAsCsv
   (PeriodicReport colspans items tr)
   = (if transpose_ then transpose else id) $
 
+  -- heading row
+  
+
   -- heading row
   ("Account" :
   ["Commodity" | layout_ == LayoutBare ]
-   ++ concatMap (\span -> [showDateSpan span, "budget"]) colspans
+   ++ concatMap (\spn -> [showDateSpan spn, "budget"]) colspans
    ++ concat [["Total"  ,"budget"] | row_total_]
    ++ concat [["Average","budget"] | average_]
   ) :
 
+  -- account rows
+  
+
   -- account rows
   concatMap (rowAsTexts prrFullName) items
 
@@ -461,23 +465,23 @@ budgetReportAsCsv
   ++ concat [ rowAsTexts (const "Total:") tr | not no_total_ ]
 
   where
-    flattentuples abs = concat [[a,b] | (a,b) <- abs]
+    flattentuples tups = concat [[a,b] | (a,b) <- tups]
     showNorm = maybe "" (wbToText . showMixedAmountB oneLine)
 
     rowAsTexts :: (PeriodicReportRow a BudgetCell -> Text)
                -> PeriodicReportRow a BudgetCell
                -> [[Text]]
     rowAsTexts render row@(PeriodicReportRow _ as (rowtot,budgettot) (rowavg, budgetavg))
-      | layout_ /= LayoutBare = [render row : fmap showNorm all]
+      | layout_ /= LayoutBare = [render row : fmap showNorm vals]
       | otherwise =
             joinNames . zipWith (:) cs  -- add symbols and names
           . transpose                   -- each row becomes a list of Text quantities
           . fmap (fmap wbToText . showMixedAmountLinesB oneLine{displayOrder=Just cs, displayMinWidth=Nothing}
                  .fromMaybe nullmixedamt)
-          $ all
+          $ vals
       where
-        cs = S.toList . foldl' S.union mempty . fmap maCommodities $ catMaybes all
+        cs = S.toList . foldl' S.union mempty . fmap maCommodities $ catMaybes vals
-        all = flattentuples as
+        vals = flattentuples as
             ++ concat [[rowtot, budgettot] | row_total_]
             ++ concat [[rowavg, budgetavg] | average_]
 

hledger-lib/Hledger/Reports/MultiBalanceReport.hs

@@ -343,7 +343,7 @@ calculateReportMatrix rspec@ReportSpec{_rsReportOpts=ropts} j priceoracle startb
     avalue = acctApplyBoth . mixedAmountApplyValuationAfterSumFromOptsWith ropts j priceoracle
     acctApplyBoth f a = a{aibalance = f $ aibalance a, aebalance = f $ aebalance a}
     historicalDate = minimumMay $ mapMaybe spanStart colspans
-    zeros = M.fromList [(span, nullacct) | span <- colspans]
+    zeros = M.fromList [(spn, nullacct) | spn <- colspans]
     colspans = map fst colps
 
 
@@ -406,11 +406,11 @@ displayedAccounts :: ReportSpec
                   -> HashMap AccountName (Map DateSpan Account)
                   -> HashMap AccountName DisplayName
 displayedAccounts ReportSpec{_rsQuery=query,_rsReportOpts=ropts} unelidableaccts valuedaccts
-    | depth == 0 = HM.singleton "..." $ DisplayName "..." "..." 1
+    | qdepth == 0 = HM.singleton "..." $ DisplayName "..." "..." 1
     | otherwise  = HM.mapWithKey (\a _ -> displayedName a) displayedAccts
   where
     -- Accounts which are to be displayed
-    displayedAccts = (if depth == 0 then id else HM.filterWithKey keep) valuedaccts
+    displayedAccts = (if qdepth == 0 then id else HM.filterWithKey keep) valuedaccts
       where
         keep name amts = isInteresting name amts || name `HM.member` interestingParents
 
@@ -429,7 +429,7 @@ displayedAccounts ReportSpec{_rsQuery=query,_rsReportOpts=ropts} unelidableaccts
 
     -- Accounts interesting for their own sake
     isInteresting name amts =
-        d <= depth                                 -- Throw out anything too deep
+        d <= qdepth                                  -- Throw out anything too deep
         && ( name `Set.member` unelidableaccts     -- Unelidable accounts should be kept unless too deep
            ||(empty_ ropts && keepWhenEmpty amts)  -- Keep empty accounts when called with --empty
            || not (isZeroRow balance amts)         -- Keep everything with a non-zero balance in the row
@@ -440,7 +440,7 @@ displayedAccounts ReportSpec{_rsQuery=query,_rsReportOpts=ropts} unelidableaccts
             ALFlat -> const True          -- Keep all empty accounts in flat mode
             ALTree -> all (null . asubs)  -- Keep only empty leaves in tree mode
         balance = maybeStripPrices . case accountlistmode_ ropts of
-            ALTree | d == depth -> aibalance
+            ALTree | d == qdepth -> aibalance
             _                    -> aebalance
           where maybeStripPrices = if conversionop_ ropts == Just NoConversionOp then id else mixedAmountStripPrices
 
@@ -453,7 +453,7 @@ displayedAccounts ReportSpec{_rsQuery=query,_rsReportOpts=ropts} unelidableaccts
         minSubs = if no_elide_ ropts then 1 else 2
 
     isZeroRow balance = all (mixedAmountLooksZero . balance)
-    depth = fromMaybe maxBound $  queryDepth query
+    qdepth = fromMaybe maxBound $ queryDepth query
     numSubs = subaccountTallies . HM.keys $ HM.filterWithKey isInteresting valuedaccts
 
 -- | Sort the rows by amount or by account declaration order.
@@ -534,10 +534,10 @@ transposeMap :: [(DateSpan, HashMap AccountName a)]
              -> HashMap AccountName (Map DateSpan a)
 transposeMap = foldr (uncurry addSpan) mempty
   where
-    addSpan span acctmap seen = HM.foldrWithKey (addAcctSpan span) seen acctmap
+    addSpan spn acctmap seen = HM.foldrWithKey (addAcctSpan spn) seen acctmap
 
-    addAcctSpan span acct a = HM.alter f acct
+    addAcctSpan spn acct a = HM.alter f acct
-      where f = Just . M.insert span a . fromMaybe mempty
+      where f = Just . M.insert spn a . fromMaybe mempty
 
 -- | A sorting helper: sort a list of things (eg report rows) keyed by account name
 -- to match the provided ordering of those same account names.

hledger-lib/Hledger/Reports/PostingsReport.hs

@@ -73,8 +73,8 @@ postingsReport rspec@ReportSpec{_rsReportOpts=ropts@ReportOpts{..}} j = items
 
       -- Postings, or summary postings with their subperiod's end date, to be displayed.
       displayps :: [(Posting, Maybe Period)]
-        | multiperiod = [(p, Just period) | (p, period) <- summariseps reportps]
+        | multiperiod = [(p', Just period') | (p', period') <- summariseps reportps]
-        | otherwise   = [(p, Nothing) | p <- reportps]
+        | otherwise   = [(p', Nothing) | p' <- reportps]
         where
           summariseps = summarisePostingsByInterval whichdate mdepth showempty colspans
           showempty = empty_ || average_
@@ -189,9 +189,9 @@ summarisePostingsByInterval wd mdepth showempty colspans =
 -- with 0 amount.
 --
 summarisePostingsInDateSpan :: DateSpan -> WhichDate -> Maybe Int -> Bool -> [Posting] -> [SummaryPosting]
-summarisePostingsInDateSpan span@(DateSpan b e) wd mdepth showempty ps
+summarisePostingsInDateSpan spn@(DateSpan b e) wd mdepth showempty ps
   | null ps && (isNothing b || isNothing e) = []
-  | null ps && showempty = [(summaryp, dateSpanAsPeriod span)]
+  | null ps && showempty = [(summaryp, dateSpanAsPeriod spn)]
   | otherwise = summarypes
   where
     postingdate = if wd == PrimaryDate then postingDate else postingDate2
@@ -200,14 +200,14 @@ summarisePostingsInDateSpan span@(DateSpan b e) wd mdepth showempty ps
     clippedanames = nub $ map (clipAccountName mdepth) anames
     summaryps | mdepth == Just 0 = [summaryp{paccount="...",pamount=sumPostings ps}]
               | otherwise        = [summaryp{paccount=a,pamount=balance a} | a <- clippedanames]
-    summarypes = map (, dateSpanAsPeriod span) $ (if showempty then id else filter (not . mixedAmountLooksZero . pamount)) summaryps
+    summarypes = map (, dateSpanAsPeriod spn) $ (if showempty then id else filter (not . mixedAmountLooksZero . pamount)) summaryps
     anames = nubSort $ map paccount ps
     -- aggregate balances by account, like ledgerFromJournal, then do depth-clipping
     accts = accountsFromPostings ps
     balance a = maybe nullmixedamt bal $ lookupAccount a accts
       where
         bal = if isclipped a then aibalance else aebalance
-        isclipped a = maybe False (accountNameLevel a >=) mdepth
+        isclipped a' = maybe False (accountNameLevel a' >=) mdepth
 
 negatePostingAmount :: Posting -> Posting
 negatePostingAmount = postingTransformAmount negate

hledger-lib/Hledger/Reports/ReportOptions.hs

@@ -292,8 +292,8 @@ defreportspec = ReportSpec
 
 -- | Set the default ConversionOp.
 setDefaultConversionOp :: ConversionOp -> ReportSpec -> ReportSpec
-setDefaultConversionOp def rspec@ReportSpec{_rsReportOpts=ropts} =
+setDefaultConversionOp defop rspec@ReportSpec{_rsReportOpts=ropts} =
-    rspec{_rsReportOpts=ropts{conversionop_=conversionop_ ropts <|> Just def}}
+    rspec{_rsReportOpts=ropts{conversionop_=conversionop_ ropts <|> Just defop}}
 
 accountlistmodeopt :: RawOpts -> AccountListMode
 accountlistmodeopt =
@@ -360,7 +360,7 @@ layoutopt rawopts = fromMaybe (LayoutWide Nothing) $ layout <|> column
         (s,n) = break (==',') $ map toLower opt
         w = case drop 1 n of
               "" -> Nothing
-              c | Just w <- readMay c -> Just w
+              c | Just w' <- readMay c -> Just w'
               _ -> usageError "width in --layout=wide,WIDTH must be an integer"
 
         err = usageError "--layout's argument should be \"wide[,WIDTH]\", \"tall\", \"bare\", or \"tidy\""
@@ -390,14 +390,14 @@ periodFromRawOpts d rawopts =
 beginDatesFromRawOpts :: Day -> RawOpts -> [Day]
 beginDatesFromRawOpts d = collectopts (begindatefromrawopt d)
   where
-    begindatefromrawopt d (n,v)
+    begindatefromrawopt d' (n,v)
       | n == "begin" =
           either (\e -> usageError $ "could not parse "++n++" date: "++customErrorBundlePretty e) Just $
-          fixSmartDateStrEither' d (T.pack v)
+          fixSmartDateStrEither' d' (T.pack v)
       | n == "period" =
         case
           either (\e -> usageError $ "could not parse period option: "++customErrorBundlePretty e) id $
-          parsePeriodExpr d (stripquotes $ T.pack v)
+          parsePeriodExpr d' (stripquotes $ T.pack v)
         of
           (_, DateSpan (Just b) _) -> Just b
           _                        -> Nothing
@@ -408,14 +408,14 @@ beginDatesFromRawOpts d = collectopts (begindatefromrawopt d)
 endDatesFromRawOpts :: Day -> RawOpts -> [Day]
 endDatesFromRawOpts d = collectopts (enddatefromrawopt d)
   where
-    enddatefromrawopt d (n,v)
+    enddatefromrawopt d' (n,v)
       | n == "end" =
           either (\e -> usageError $ "could not parse "++n++" date: "++customErrorBundlePretty e) Just $
-          fixSmartDateStrEither' d (T.pack v)
+          fixSmartDateStrEither' d' (T.pack v)
       | n == "period" =
         case
           either (\e -> usageError $ "could not parse period option: "++customErrorBundlePretty e) id $
-          parsePeriodExpr d (stripquotes $ T.pack v)
+          parsePeriodExpr d' (stripquotes $ T.pack v)
         of
           (_, DateSpan _ (Just e)) -> Just e
           _                        -> Nothing
@@ -589,12 +589,12 @@ journalApplyValuationFromOptsWith rspec@ReportSpec{_rsReportOpts=ropts} j priceo
       CalcGain -> journalMapPostings (\p -> postingTransformAmount (gain p) p) j
       _        -> journalMapPostings (\p -> postingTransformAmount (valuation p) p) $ costing j
   where
-    valuation p = maybe id (mixedAmountApplyValuation priceoracle styles (periodEnd p) (_rsDay rspec) (postingDate p)) (value_ ropts)
+    valuation p = maybe id (mixedAmountApplyValuation priceoracle styles (postingperiodend p) (_rsDay rspec) (postingDate p)) (value_ ropts)
-    gain      p = maybe id (mixedAmountApplyGain      priceoracle styles (periodEnd p) (_rsDay rspec) (postingDate p)) (value_ ropts)
+    gain      p = maybe id (mixedAmountApplyGain      priceoracle styles (postingperiodend p) (_rsDay rspec) (postingDate p)) (value_ ropts)
     costing     = journalToCost (fromMaybe NoConversionOp $ conversionop_ ropts)
 
     -- Find the end of the period containing this posting
-    periodEnd  = addDays (-1) . fromMaybe err . mPeriodEnd . postingDateOrDate2 (whichDate ropts)
+    postingperiodend  = addDays (-1) . fromMaybe err . mPeriodEnd . postingDateOrDate2 (whichDate ropts)
     mPeriodEnd = case interval_ ropts of
         NoInterval -> const . spanEnd . fst $ reportSpan j rspec
         _          -> spanEnd <=< latestSpanContaining (historical : spans)
@@ -611,11 +611,11 @@ mixedAmountApplyValuationAfterSumFromOptsWith ropts j priceoracle =
     case valuationAfterSum ropts of
         Just mc -> case balancecalc_ ropts of
             CalcGain -> gain mc
-            _        -> \span -> valuation mc span . costing
+            _        -> \spn -> valuation mc spn . costing
         Nothing      -> const id
   where
-    valuation mc span = mixedAmountValueAtDate priceoracle styles mc (maybe err (addDays (-1)) $ spanEnd span)
+    valuation mc spn = mixedAmountValueAtDate priceoracle styles mc (maybe err (addDays (-1)) $ spanEnd spn)
-    gain mc span = mixedAmountGainAtDate priceoracle styles mc (maybe err (addDays (-1)) $ spanEnd span)
+    gain mc spn = mixedAmountGainAtDate priceoracle styles mc (maybe err (addDays (-1)) $ spanEnd spn)
     costing = case fromMaybe NoConversionOp $ conversionop_ ropts of
         NoConversionOp -> id
         ToCost         -> styleMixedAmount styles . mixedAmountCost
@@ -809,6 +809,8 @@ class HasReportOptsNoUpdate a => HasReportOpts a where
     reportOpts = reportOptsNoUpdate
     {-# INLINE reportOpts #-}
 
+    -- XXX these names are a bit clashy
+
     period :: ReportableLens' a Period
     period = reportOpts.periodNoUpdate
     {-# INLINE period #-}

hledger-lib/Hledger/Utils.hs

@@ -183,7 +183,7 @@ readFileOrStdinPortably f = openFileOrStdin f ReadMode >>= readHandlePortably
   where
     openFileOrStdin :: String -> IOMode -> IO Handle
     openFileOrStdin "-" _ = return stdin
-    openFileOrStdin f m   = openFile f m
+    openFileOrStdin f' m   = openFile f' m
 
 readHandlePortably :: Handle -> IO Text
 readHandlePortably h = do
@@ -225,9 +225,9 @@ sequence' ms = do
   return (h [])
   where
     go h [] = return h
-    go h (m:ms) = do
+    go h (m:ms') = do
       x <- m
-      go (h . (x :)) ms
+      go (h . (x :)) ms'
 
 -- | Like mapM but uses sequence'.
 {-# INLINABLE mapM' #-}
@@ -339,7 +339,7 @@ makeHledgerClassyLenses x = flip makeLensesWith x $ classyRules
     -- HasReportOpts class with some special behaviour. We therefore give the
     -- basic lenses a special NoUpdate name to avoid conflicts.
     className "ReportOpts" = Just (mkName "HasReportOptsNoUpdate", mkName "reportOptsNoUpdate")
-    className (x:xs)       = Just (mkName ("Has" ++ x:xs), mkName (toLower x : xs))
+    className (x':xs)       = Just (mkName ("Has" ++ x':xs), mkName (toLower x' : xs))
     className []           = Nothing
 
     -- Fields of ReportOpts which need to update the Query when they are updated.

hledger-lib/Hledger/Utils/Regex.hs

@@ -99,11 +99,11 @@ instance Show Regexp where
                              RegexpCI _ _ -> showString "RegexpCI "
 
 instance Read Regexp where
-  readsPrec d r =  readParen (d > app_prec) (\r -> [(toRegexCI' m,t) |
+  readsPrec d r =  readParen (d > app_prec) (\r' -> [(toRegexCI' m,t) |
-                                                    ("RegexCI",s) <- lex r,
+                                                    ("RegexCI",s) <- lex r',
                                                     (m,t) <- readsPrec (app_prec+1) s]) r
-                ++ readParen (d > app_prec) (\r -> [(toRegex' m, t) |
+                ++ readParen (d > app_prec) (\r' -> [(toRegex' m, t) |
-                                                    ("Regex",s) <- lex r,
+                                                    ("Regex",s) <- lex r',
                                                     (m,t) <- readsPrec (app_prec+1) s]) r
     where app_prec = 10
 
@@ -186,7 +186,7 @@ regexReplace re repl = memo $ regexReplaceUnmemo re repl
 -- but there can still be a runtime error from the replacement
 -- pattern, eg a backreference referring to a nonexistent match group.)
 regexReplaceUnmemo :: Regexp -> Replacement -> String -> Either RegexError String
-regexReplaceUnmemo re repl s = foldM (replaceMatch repl) s (reverse $ match (reCompiled re) s :: [MatchText String])
+regexReplaceUnmemo re repl str = foldM (replaceMatch repl) str (reverse $ match (reCompiled re) str :: [MatchText String])
   where
     -- Replace one match within the string with the replacement text
     -- appropriate for this match. Or return an error message.
@@ -195,22 +195,22 @@ regexReplaceUnmemo re repl s = foldM (replaceMatch repl) s (reverse $ match (reC
       case elems matchgroups of 
         [] -> Right s
         ((_,(off,len)):_) ->   -- groups should have 0-based indexes, and there should always be at least one, since this is a match
-          erepl >>= \repl -> Right $ pre ++ repl ++ post
+          erpl >>= \rpl -> Right $ pre ++ rpl ++ post
           where
             (pre, post') = splitAt off s
             post = drop len post'
             -- The replacement text: the replacement pattern with all
             -- numeric backreferences replaced by the appropriate groups
             -- from this match. Or an error message.
-            erepl = regexReplaceAllByM backrefRegex (lookupMatchGroup matchgroups) replpat
+            erpl = regexReplaceAllByM backrefRegex (lookupMatchGroup matchgroups) replpat
               where
                 -- Given some match groups and a numeric backreference,
                 -- return the referenced group text, or an error message.
                 lookupMatchGroup :: MatchText String -> String -> Either RegexError String
-                lookupMatchGroup grps ('\\':s@(_:_)) | all isDigit s =
+                lookupMatchGroup grps ('\\':s2@(_:_)) | all isDigit s2 =
-                  case read s of n | n `elem` indices grps -> Right $ fst (grps ! n)  -- PARTIAL: should not fail, all digits
+                  case read s2 of n | n `elem` indices grps -> Right $ fst (grps ! n)  -- PARTIAL: should not fail, all digits
                                   _                         -> Left $ "no match group exists for backreference \"\\"++s++"\""
-                lookupMatchGroup _ s = Left $ "lookupMatchGroup called on non-numeric-backreference \""++s++"\", shouldn't happen"
+                lookupMatchGroup _ s2 = Left $ "lookupMatchGroup called on non-numeric-backreference \""++s2++"\", shouldn't happen"
     backrefRegex = toRegex' "\\\\[0-9]+"  -- PARTIAL: should not fail
 
 -- regexReplace' :: Regexp -> Replacement -> String -> String
@@ -249,8 +249,8 @@ regexReplaceAllBy re transform s = prependdone rest
         go :: (Int,String,String->String) -> (Int,Int) ->  (Int,String,String->String)
         go (pos,todo,prepend) (off,len) =
           let (prematch, matchandrest) = splitAt (off - pos) todo
-              (matched, rest) = splitAt len matchandrest
+              (matched, rest2) = splitAt len matchandrest
-          in (off + len, rest, prepend . (prematch++) . (transform matched ++))
+          in (off + len, rest2, prepend . (prematch++) . (transform matched ++))
 
 -- Replace all occurrences of a regexp in a string, transforming each match
 -- with the given monadic function. Eg if the monad is Either, a Left result

hledger-lib/Text/Megaparsec/Custom.hs

@@ -371,9 +371,9 @@ attachSource filePath sourceText finalParseError = case finalParseError of
 
   -- A parse error thrown directly with the 'FinalError' constructor
   -- requires both source and filepath.
-  FinalError parseError ->
+  FinalError err ->
     let bundle = ParseErrorBundle
-          { bundleErrors = parseError NE.:| []
+          { bundleErrors = err NE.:| []
           , bundlePosState = initialPosState filePath sourceText }
     in  FinalParseErrorBundle'
           { finalErrorBundle = bundle

hledger-lib/Text/Tabular/AsciiWide.hs

@@ -211,11 +211,11 @@ renderHLine _ _ _ _ _ NoLine = []
 renderHLine vpos borders pretty w h prop = [renderHLine' vpos borders pretty prop w h]
 
 renderHLine' :: VPos -> Bool -> Bool -> Properties -> [Int] -> Header a -> Builder
-renderHLine' vpos borders pretty prop is h = addBorders $ sep <> coreLine <> sep
+renderHLine' vpos borders pretty prop is hdr = addBorders $ sep <> coreLine <> sep
  where
   addBorders xs   = if borders then edge HL <> xs <> edge HR else xs
   edge hpos       = boxchar vpos hpos SingleLine prop pretty
-  coreLine        = foldMap helper $ flattenHeader $ zipHeader 0 is h
+  coreLine        = foldMap helper $ flattenHeader $ zipHeader 0 is hdr
   helper          = either vsep dashes
   dashes (i,_)    = stimesMonoid i sep
   sep             = boxchar vpos HM NoLine prop pretty

hledger-lib/package.yaml

@@ -83,7 +83,6 @@ ghc-options:
 - -Wall
 - -Wno-incomplete-uni-patterns
 - -Wno-missing-signatures
-- -Wno-name-shadowing
 - -Wno-orphans
 - -Wno-type-defaults
 - -Wno-unused-do-bind

hledger-ui/Hledger/UI/UIState.hs

@@ -210,7 +210,7 @@ updateReportPeriod updatePeriod = fromRight err . overEither period updatePeriod
 
 -- | Apply a new filter query, or return the failing query.
 setFilter :: String -> UIState -> Either String UIState
-setFilter s = first (const s) . setEither querystring (words'' prefixes $ T.pack s)
+setFilter s = first (const s) . setEither querystring (words'' queryprefixes $ T.pack s)
 
 -- | Reset some filters & toggles.
 resetFilter :: UIState -> UIState

hledger-web/Hledger/Web/Widget/Common.hs

@@ -118,14 +118,14 @@ removeDates =
     map quoteIfSpaced .
     filter (\term ->
         not $ T.isPrefixOf "date:" term || T.isPrefixOf "date2:" term) .
-    Query.words'' Query.prefixes
+    Query.words'' queryprefixes
 
 removeInacct :: Text -> [Text]
 removeInacct =
     map quoteIfSpaced .
     filter (\term ->
         not $ T.isPrefixOf "inacct:" term || T.isPrefixOf "inacctonly:" term) .
-    Query.words'' Query.prefixes
+    Query.words'' queryprefixes
 
 replaceInacct :: Text -> Text -> Text
 replaceInacct q acct = T.unwords $ acct : removeInacct q

hledger/Hledger/Cli/CliOptions.hs

@@ -323,7 +323,7 @@ defCommandMode names = defMode {
 -- given name, providing hledger's common input/reporting/help flags.
 -- Just used when invoking addons.
 addonCommandMode :: Name -> Mode RawOpts
-addonCommandMode name = (defCommandMode [name]) {
+addonCommandMode nam = (defCommandMode [nam]) {
    modeHelp = ""
      -- XXX not needed ?
      -- fromMaybe "" $ lookup (stripAddonExtension name) [
@@ -539,10 +539,10 @@ rawOptsToCliOpts rawopts = do
 -- add a space character to preserve them.
 --
 getHledgerCliOpts' :: Mode RawOpts -> [String] -> IO CliOpts
-getHledgerCliOpts' mode' args' = do
+getHledgerCliOpts' mode' args0 = do
-  let rawopts = either usageError id $ process mode' args'
+  let rawopts = either usageError id $ process mode' args0
   opts <- rawOptsToCliOpts rawopts
-  debugArgs args' opts
+  debugArgs args0 opts
   when ("help" `inRawOpts` rawopts_ opts) $ putStr shorthelp >> exitSuccess
   -- when ("help" `inRawOpts` rawopts_ opts) $ putStr longhelp  >> exitSuccess
   return opts
@@ -557,11 +557,11 @@ getHledgerCliOpts' mode' args' = do
         ]
     -- | Print debug info about arguments and options if --debug is present.
     debugArgs :: [String] -> CliOpts -> IO ()
-    debugArgs args' opts =
+    debugArgs args1 opts =
-      when ("--debug" `elem` args') $ do
+      when ("--debug" `elem` args1) $ do
         progname' <- getProgName
         putStrLn $ "running: " ++ progname'
-        putStrLn $ "raw args: " ++ show args'
+        putStrLn $ "raw args: " ++ show args1
         putStrLn $ "processed opts:\n" ++ show opts
         putStrLn $ "search query: " ++ show (_rsQuery $ reportspec_ opts)
 
@@ -590,7 +590,7 @@ expandPathPreservingPrefix d prefixedf = do
   let (p,f) = splitReaderPrefix prefixedf
   f' <- expandPath d f
   return $ case p of
-    Just p  -> p ++ ":" ++ f'
+    Just p'  -> p' ++ ":" ++ f'
     Nothing -> f'
 
 -- | Get the expanded, absolute output file path specified by an

hledger/Hledger/Cli/Commands/Accounts.hs

@@ -51,7 +51,7 @@ accounts CliOpts{rawopts_=rawopts, reportspec_=ReportSpec{_rsQuery=query,_rsRepo
 
   -- 1. identify the accounts we'll show
   let tree     = tree_ ropts
-      declared = boolopt "declared" rawopts
+      decl = boolopt "declared" rawopts
       used = boolopt "used"     rawopts
       types = boolopt "types"    rawopts
       positions = boolopt "positions" rawopts
@@ -60,15 +60,15 @@ accounts CliOpts{rawopts_=rawopts, reportspec_=ReportSpec{_rsQuery=query,_rsRepo
       nodepthq = dbg4 "nodepthq" $ filterQuery (not . queryIsDepth) query
       -- just the acct: part of the query will be reapplied later, after clipping
       acctq = dbg4 "acctq" $ filterQuery queryIsAcct query
-      depth    = dbg4 "depth" $ queryDepth $ filterQuery queryIsDepth query
+      dep = dbg4 "depth" $ queryDepth $ filterQuery queryIsDepth query
       matcheddeclaredaccts =
         dbg4 "matcheddeclaredaccts" $
         filter (matchesAccountExtra (journalAccountType j) (journalInheritedAccountTags j) nodepthq)
           $ map fst $ jdeclaredaccounts j
       matchedusedaccts = dbg5 "matchedusedaccts" $ map paccount $ journalPostings $ filterJournalPostings nodepthq j
       accts = dbg5 "accts to show" $
-        if | declared     && not used -> matcheddeclaredaccts
+        if | decl     && not used -> matcheddeclaredaccts
-           | not declared && used     -> matchedusedaccts
+           | not decl && used     -> matchedusedaccts
            | otherwise            -> matcheddeclaredaccts ++ matchedusedaccts
 
   -- 2. sort them by declaration order (then undeclared accounts alphabetically)
@@ -81,7 +81,7 @@ accounts CliOpts{rawopts_=rawopts, reportspec_=ReportSpec{_rsQuery=query,_rsRepo
         filter (matchesAccount acctq) $  -- clipping can leave accounts that no longer match the query, remove such
         nub $                            -- clipping can leave duplicates (adjacent, hopefully)
         filter (not . T.null) $          -- depth:0 can leave nulls
-        map (clipAccountName depth) $  -- clip at depth if specified
+        map (clipAccountName dep) $      -- clip at depth if specified
         sortedaccts
 
   -- 4. print what remains as a list or tree, maybe applying --drop in the former case.

hledger/Hledger/Cli/Commands/Add.hs

@@ -189,7 +189,7 @@ confirmedTransactionWizard prevInput es@EntryState{..} stack@(currentStage : _)
     Nothing ->
       confirmedTransactionWizard prevInput es (drop 1 stack)
 
-  EnterNewPosting txnParams@TxnParams{..} posting -> case (esPostings, posting) of
+  EnterNewPosting txnParams@TxnParams{..} p -> case (esPostings, p) of
     ([], Nothing) ->
       confirmedTransactionWizard prevInput es (EnterAccount txnParams : stack)
     (_, Just _) ->
@@ -230,15 +230,15 @@ confirmedTransactionWizard prevInput es@EntryState{..} stack@(currentStage : _)
       confirmedTransactionWizard prevInput es{esPostings=init esPostings} (dropWhile notPrevAmountAndNotEnterDesc stack)
 
   EnterAmountAndComment txnParams account -> amountAndCommentWizard prevInput es >>= \case
-    Just (amount, comment) -> do
+    Just (amt, comment) -> do
-      let posting = nullposting{paccount=T.pack $ stripbrackets account
+      let p = nullposting{paccount=T.pack $ stripbrackets account
-                               ,pamount=mixedAmount amount
+                          ,pamount=mixedAmount amt
                           ,pcomment=comment
                           ,ptype=accountNamePostingType $ T.pack account
                           }
-          amountAndCommentString = showAmount amount ++ T.unpack (if T.null comment then "" else "  ;" <> comment)
+          amountAndCommentString = showAmount amt ++ T.unpack (if T.null comment then "" else "  ;" <> comment)
           prevAmountAndCmnt' = replaceNthOrAppend (length esPostings) amountAndCommentString (prevAmountAndCmnt prevInput)
-          es' = es{esPostings=esPostings++[posting], esArgs=drop 2 esArgs}
+          es' = es{esPostings=esPostings++[p], esArgs=drop 2 esArgs}
       confirmedTransactionWizard prevInput{prevAmountAndCmnt=prevAmountAndCmnt'} es' (EnterNewPosting txnParams (Just posting) : stack)
     Nothing -> confirmedTransactionWizard prevInput es (drop 1 stack)
 
@@ -310,18 +310,18 @@ accountWizard PrevInput{..} EntryState{..} = do
     where
       canfinish = not (null esPostings) && postingsBalanced esPostings
       parseAccountOrDotOrNull :: String -> Bool -> String -> Maybe (Maybe String)
-      parseAccountOrDotOrNull _  _ "<"       = dbg1 $ Just Nothing
+      parseAccountOrDotOrNull _  _ "<"       = dbg' $ Just Nothing
-      parseAccountOrDotOrNull _  _ "."       = dbg1 $ Just $ Just "." -- . always signals end of txn
+      parseAccountOrDotOrNull _  _ "."       = dbg' $ Just $ Just "." -- . always signals end of txn
-      parseAccountOrDotOrNull "" True ""     = dbg1 $ Just $ Just ""  -- when there's no default and txn is balanced, "" also signals end of txn
+      parseAccountOrDotOrNull "" True ""     = dbg' $ Just $ Just ""  -- when there's no default and txn is balanced, "" also signals end of txn
-      parseAccountOrDotOrNull def@(_:_) _ "" = dbg1 $ Just $ Just def -- when there's a default, "" means use that
+      parseAccountOrDotOrNull def@(_:_) _ "" = dbg' $ Just $ Just def -- when there's a default, "" means use that
-      parseAccountOrDotOrNull _ _ s          = dbg1 $ fmap (Just . T.unpack) $
+      parseAccountOrDotOrNull _ _ s          = dbg' $ fmap (Just . T.unpack) $
         either (const Nothing) validateAccount $
           flip evalState esJournal $ runParserT (accountnamep <* eof) "" (T.pack s) -- otherwise, try to parse the input as an accountname
         where
           validateAccount :: Text -> Maybe Text
           validateAccount t | no_new_accounts_ esOpts && notElem t (journalAccountNamesDeclaredOrImplied esJournal) = Nothing
                             | otherwise = Just t
-      dbg1 = id -- strace
+      dbg' = id -- strace
 
 amountAndCommentWizard PrevInput{..} EntryState{..} = do
   let pnum = length esPostings + 1

hledger/Hledger/Cli/Commands/Aregister.hs

@@ -31,7 +31,7 @@ import Hledger
 import Hledger.Read.CsvReader (CSV, CsvRecord, printCSV)
 import Hledger.Cli.CliOptions
 import Hledger.Cli.Utils
-import Text.Tabular.AsciiWide
+import Text.Tabular.AsciiWide hiding (render)
 
 aregistermode = hledgerCommandMode
   $(embedFileRelative "Hledger/Cli/Commands/Aregister.txt")
@@ -71,7 +71,7 @@ aregister :: CliOpts -> Journal -> IO ()
 aregister opts@CliOpts{rawopts_=rawopts,reportspec_=rspec} j = do
   -- the first argument specifies the account, any remaining arguments are a filter query
   let help = "aregister needs an ACCTPAT argument to select an account"
-  (apat,querystring) <- case listofstringopt "args" rawopts of
+  (apat,querystr) <- case listofstringopt "args" rawopts of
       []     -> error' $ help <> ".\nPlease provide an account name or a (case-insensitive, infix, regexp) pattern."
       (a:as) -> return (a, map T.pack as)
   let
@@ -88,7 +88,7 @@ aregister opts@CliOpts{rawopts_=rawopts,reportspec_=rspec} j = do
         depth_=Nothing
         -- always show historical balance
       , balanceaccum_= Historical
-      , querystring_ = querystring
+      , querystring_ = querystr
       }
     wd = whichDate ropts'
   -- and regenerate the ReportSpec, making sure to use the above
@@ -184,8 +184,8 @@ accountTransactionsReportItemAsText
       ]
     spacerCell  = Cell BottomLeft [WideBuilder (TB.singleton ' ') 1]
     spacerCell2 = Cell BottomLeft [WideBuilder (TB.fromString "  ") 2]
-    pad fullwidth amt = WideBuilder (TB.fromText $ T.replicate w " ") w <> amt
+    pad fullwidth amt1 = WideBuilder (TB.fromText $ T.replicate w " ") w <> amt1
-      where w = fullwidth - wbWidth amt
+      where w = fullwidth - wbWidth amt1
     -- calculate widths
     (totalwidth,mdescwidth) = registerWidthsFromOpts copts
     (datewidth, date) = (10, showDate $ transactionRegisterDate wd reportq thisacctq t)

hledger/Hledger/Cli/Commands/Balance.hs

@@ -267,7 +267,7 @@ import qualified Data.Text.Lazy as TL
 import qualified Data.Text.Lazy.Builder as TB
 import Data.Time (addDays, fromGregorian)
 import System.Console.CmdArgs.Explicit as C
-import Lucid as L
+import Lucid as L hiding (value_)
 import Safe (headMay, maximumMay)
 import Text.Tabular.AsciiWide
     (Align(..), Cell(..), Table(..), TableOpts(..), cellWidth, concatTables,
@@ -340,8 +340,8 @@ balancemode = hledgerCommandMode
 balance :: CliOpts -> Journal -> IO ()
 balance opts@CliOpts{reportspec_=rspec} j = case balancecalc_ of
     CalcBudget -> do  -- single or multi period budget report
-      let reportspan = fst $ reportSpan j rspec
+      let rspan = fst $ reportSpan j rspec
-          budgetreport = budgetReport rspec (balancingopts_ $ inputopts_ opts) reportspan j
+          budgetreport = budgetReport rspec (balancingopts_ $ inputopts_ opts) rspan j
           render = case fmt of
             "txt"  -> budgetReportAsText ropts
             "json" -> (<>"\n") . toJsonText
@@ -362,8 +362,8 @@ balance opts@CliOpts{reportspec_=rspec} j = case balancecalc_ of
     _ -> do  -- single period simple balance report
         let report = balanceReport rspec j -- simple Ledger-style balance report
             render = case fmt of
-              "txt"  -> \ropts -> TB.toLazyText . balanceReportAsText ropts
+              "txt"  -> \ropts1 -> TB.toLazyText . balanceReportAsText ropts1
-              "csv"  -> \ropts -> printCSV . balanceReportAsCsv ropts
+              "csv"  -> \ropts1 -> printCSV . balanceReportAsCsv ropts1
               -- "html" -> \ropts -> (<>"\n") . L.renderText . multiBalanceReportAsHtml ropts . balanceReportAsMultiBalanceReport ropts
               "json" -> const $ (<>"\n") . toJsonText
               _      -> error' $ unsupportedOutputFormatError fmt  -- PARTIAL:
@@ -430,9 +430,9 @@ balanceReportAsText :: ReportOpts -> BalanceReport -> TB.Builder
 balanceReportAsText opts ((items, total)) = case layout_ opts of
     LayoutBare | iscustom -> error' "Custom format not supported with commodity columns"  -- PARTIAL:
     LayoutBare -> balanceReportAsText' opts ((items, total))
-    _ -> unlinesB lines <> unlinesB (if no_total_ opts then [] else [overline, totalLines])
+    _ -> unlinesB ls <> unlinesB (if no_total_ opts then [] else [overline, totalLines])
   where
-    (lines, sizes) = unzip $ map (balanceReportItemAsText opts) items
+    (ls, sizes) = unzip $ map (balanceReportItemAsText opts) items
     -- abuse renderBalanceReportItem to render the total with similar format
     (totalLines, _) = renderBalanceReportItem opts ("",0,total)
     -- with a custom format, extend the line to the full report width;
@@ -449,20 +449,20 @@ balanceReportAsText opts ((items, total)) = case layout_ opts of
 balanceReportAsText' :: ReportOpts -> BalanceReport -> TB.Builder
 balanceReportAsText' opts ((items, total)) =
   unlinesB . fmap (renderColumns def{tableBorders=False} sizes .  Tab.Group Tab.NoLine . fmap Tab.Header) $
-    lines ++ concat [[[overline], totalline] | not (no_total_ opts)]
+    ls ++ concat [[[overline], totalline] | not (no_total_ opts)]
   where
-    render (_, acctname, depth, amt) =
+    render (_, acctname, dep, amt) =
         [ Cell TopRight damts
         , Cell TopLeft (fmap wbFromText cs)
         , Cell TopLeft (replicate (length damts - 1) mempty ++ [wbFromText dispname]) ]
       where dopts = oneLine{displayColour=color_ opts, displayOrder=Just cs}
             cs    = if mixedAmountLooksZero amt then [""] else S.toList $ maCommodities amt
-            dispname = T.replicate ((depth - 1) * 2) " " <> acctname
+            dispname = T.replicate ((dep - 1) * 2) " " <> acctname
             damts = showMixedAmountLinesB dopts amt
-    lines = fmap render items
+    ls = fmap render items
     totalline = render ("", "", 0, total)
     sizes = fromMaybe 0 . maximumMay . map cellWidth <$>
-        transpose ([totalline | not (no_total_ opts)] ++ lines)
+        transpose ([totalline | not (no_total_ opts)] ++ ls)
     overline = Cell TopLeft . pure . wbFromText . flip T.replicate "-" . fromMaybe 0 $ headMay sizes
 
 {-
@@ -481,12 +481,12 @@ This implementation turned out to be a bit convoluted but implements the followi
 -- differently-priced quantities of the same commodity will appear merged.
 -- The output will be one or more lines depending on the format and number of commodities.
 balanceReportItemAsText :: ReportOpts -> BalanceReportItem -> (TB.Builder, [Int])
-balanceReportItemAsText opts (_, accountName, depth, amt) =
+balanceReportItemAsText opts (_, accountName, dep, amt) =
-  renderBalanceReportItem opts (accountName, depth, amt)
+  renderBalanceReportItem opts (accountName, dep, amt)
 
 -- | Render a balance report item using the given StringFormat, generating one or more lines of text.
 renderBalanceReportItem :: ReportOpts -> (AccountName, Int, MixedAmount) -> (TB.Builder, [Int])
-renderBalanceReportItem opts (acctname, depth, total) =
+renderBalanceReportItem opts (acctname, dep, total) =
   case format_ opts of
       OneLine       comps -> renderRow' $ render True  True  comps
       TopAligned    comps -> renderRow' $ render True  False comps
@@ -496,14 +496,14 @@ renderBalanceReportItem opts (acctname, depth, total) =
                       . Tab.Group Tab.NoLine $ map Tab.Header is
                     , map cellWidth is )
 
-    render topaligned oneline = map (renderComponent topaligned oneline opts (acctname, depth, total))
+    render topaligned oneline = map (renderComponent topaligned oneline opts (acctname, dep, total))
 
 -- | Render one StringFormat component for a balance report item.
 renderComponent :: Bool -> Bool -> ReportOpts -> (AccountName, Int, MixedAmount) -> StringFormatComponent -> Cell
 renderComponent _ _ _ _ (FormatLiteral s) = textCell TopLeft s
-renderComponent topaligned oneline opts (acctname, depth, total) (FormatField ljust mmin mmax field) = case field of
+renderComponent topaligned oneline opts (acctname, dep, total) (FormatField ljust mmin mmax field) = case field of
     DepthSpacerField -> Cell align [WideBuilder (TB.fromText $ T.replicate d " ") d]
-                        where d = maybe id min mmax $ depth * fromMaybe 1 mmin
+                        where d = maybe id min mmax $ dep * fromMaybe 1 mmin
     AccountField     -> textCell align $ formatText ljust mmin mmax acctname
     TotalField       -> Cell align . pure $ showMixedAmountB dopts total
     _                -> Cell align [mempty]
@@ -721,13 +721,13 @@ multiBalanceRowAsWbs bopts ReportOpts{..} colspans (PeriodicReportRow _ as rowto
     totalscolumn = row_total_ && balanceaccum_ `notElem` [Cumulative, Historical]
     cs = if all mixedAmountLooksZero allamts then [""] else S.toList $ foldMap maCommodities allamts
     allamts = as ++ [rowtot | totalscolumn && not (null as)] ++ [rowavg | average_ && not (null as)]
-    addDateColumns span@(DateSpan s e) = (wbFromText (showDateSpan span) :)
+    addDateColumns spn@(DateSpan s e) = (wbFromText (showDateSpan spn) :)
                                        . (wbFromText (maybe "" showDate s) :)
                                        . (wbFromText (maybe "" (showDate . addDays (-1)) e) :)
 
     paddedTranspose :: a -> [[a]] -> [[a]]
     paddedTranspose _ [] = [[]]
-    paddedTranspose n as = take (maximum . map length $ as) . trans $ as
+    paddedTranspose n as1 = take (maximum . map length $ as1) . trans $ as1
         where
           trans ([] : xss)  = (n : map h xss) :  trans ([n] : map t xss)
           trans ((x : xs) : xss) = (x : map h xss) : trans (m xs : map t xss)

hledger/Hledger/Cli/Commands/Check.hs

@@ -96,10 +96,10 @@ parseCheckArgument s =
 -- | Run the named error check, possibly with some arguments, 
 -- on this journal with these options.
 runCheck :: CliOpts -> Journal -> (Check,[String]) -> IO ()
-runCheck CliOpts{reportspec_=ReportSpec{_rsReportOpts=ropts}} j (check,_) = do
+runCheck CliOpts{reportspec_=ReportSpec{_rsReportOpts=ropts}} j (chck,_) = do
   d <- getCurrentDay
   let
-    results = case check of
+    results = case chck of
       Accounts        -> journalCheckAccounts j
       Commodities     -> journalCheckCommodities j
       Ordereddates    -> journalCheckOrdereddates (whichDate ropts) j

hledger/Hledger/Cli/Commands/Close.hs

@@ -135,11 +135,11 @@ close copts@CliOpts{rawopts_=rawopts, reportspec_=rspec'} j = do
 
         | -- get the balances for each commodity and transaction price
           (a,mb) <- acctbals
-        , let bs = amounts mb
+        , let bs0 = amounts mb
           -- mark the last balance in each commodity with True
-        , let bs' = concat [reverse $ zip (reverse bs) (True : repeat False)
+        , let bs2 = concat [reverse $ zip (reverse bs1) (True : repeat False)
-                           | bs <- groupBy ((==) `on` acommodity) bs]
+                           | bs1 <- groupBy ((==) `on` acommodity) bs0]
-        , (b, islast) <- bs'
+        , (b, islast) <- bs2
         ]
 
       -- or a final multicommodity posting transferring all balances to equity
@@ -160,12 +160,12 @@ close copts@CliOpts{rawopts_=rawopts, reportspec_=rspec'} j = do
         : [posting{paccount=openingacct, pamount=mixedAmount . precise $ negate b} | interleaved]
 
         | (a,mb) <- acctbals
-        , let bs = amounts mb
+        , let bs0 = amounts mb
           -- mark the last balance in each commodity with the unpriced sum in that commodity (for a balance assertion)
-        , let bs' = concat [reverse $ zip (reverse bs) (Just commoditysum : repeat Nothing)
+        , let bs2 = concat [reverse $ zip (reverse bs1) (Just commoditysum : repeat Nothing)
-                           | bs <- groupBy ((==) `on` acommodity) bs
+                           | bs1 <- groupBy ((==) `on` acommodity) bs0
-                           , let commoditysum = (sum bs)]
+                           , let commoditysum = (sum bs1)]
-        , (b, mcommoditysum) <- bs'
+        , (b, mcommoditysum) <- bs2
         ]
       ++ [posting{paccount=openingacct, pamount=if explicit then mixedAmountSetFullPrecision (maNegate totalamt) else missingmixedamt} | not interleaved]
 

hledger/Hledger/Cli/Commands/Codes.hs

@@ -34,6 +34,6 @@ codesmode = hledgerCommandMode
 codes :: CliOpts -> Journal -> IO ()
 codes CliOpts{reportspec_=rspec} j = do
   let ts = entriesReport rspec j
-      codes = (if empty_ (_rsReportOpts rspec) then id else filter (not . T.null)) $
+      codes' = (if empty_ (_rsReportOpts rspec) then id else filter (not . T.null)) $
               map tcode ts
-  mapM_ T.putStrLn codes
+  mapM_ T.putStrLn codes'

hledger/Hledger/Cli/Commands/Descriptions.hs

@@ -33,6 +33,6 @@ descriptionsmode = hledgerCommandMode
 descriptions :: CliOpts -> Journal -> IO ()
 descriptions CliOpts{reportspec_=rspec} j = do
   let ts = entriesReport rspec j
-      descriptions = nubSort $ map tdescription ts
+      descs = nubSort $ map tdescription ts
 
-  mapM_ T.putStrLn descriptions
+  mapM_ T.putStrLn descs

hledger/Hledger/Cli/Commands/Files.hs

@@ -31,7 +31,7 @@ files :: CliOpts -> Journal -> IO ()
 files CliOpts{rawopts_=rawopts} j = do
   let args = listofstringopt "args" rawopts
   regex <- mapM (either fail pure . toRegex . T.pack) $ headMay args
-  let files = maybe id (filter . regexMatch) regex
+  let fs = maybe id (filter . regexMatch) regex
               $ map fst
               $ jfiles j
-  mapM_ putStrLn files
+  mapM_ putStrLn fs

hledger/Hledger/Cli/Commands/Notes.hs

@@ -34,5 +34,5 @@ notesmode = hledgerCommandMode
 notes :: CliOpts -> Journal -> IO ()
 notes CliOpts{reportspec_=rspec} j = do
   let ts = entriesReport rspec j
-      notes = nubSort $ map transactionNote ts
+      notes' = nubSort $ map transactionNote ts
-  mapM_ T.putStrLn notes
+  mapM_ T.putStrLn notes'

hledger/Hledger/Cli/Commands/Payees.hs

@@ -36,13 +36,13 @@ payeesmode = hledgerCommandMode
 payees :: CliOpts -> Journal -> IO ()
 payees CliOpts{rawopts_=rawopts, reportspec_=ReportSpec{_rsQuery=query}} j = do
   let
-    declared = boolopt "declared" rawopts
+    decl = boolopt "declared" rawopts
     used     = boolopt "used"     rawopts
     -- XXX matchesPayee is currently an alias for matchesDescription, not sure if it matters
     matcheddeclaredpayees = S.fromList . filter (matchesPayeeWIP query) $ journalPayeesDeclared j
     matchedusedpayees     = S.fromList . map transactionPayee $ filter (matchesTransaction query) $ jtxns j
-    payees =
+    payees' =
-      if | declared     && not used -> matcheddeclaredpayees
+      if | decl     && not used -> matcheddeclaredpayees
-         | not declared && used     -> matchedusedpayees
+         | not decl && used     -> matchedusedpayees
          | otherwise            -> matcheddeclaredpayees <> matchedusedpayees
-  mapM_ T.putStrLn payees
+  mapM_ T.putStrLn payees'

hledger/Hledger/Cli/Commands/Print.hs

@@ -168,13 +168,13 @@ entriesReportAsCsv txns =
 -- The txnidx field (transaction index) allows postings to be grouped back into transactions.
 transactionToCSV :: Transaction -> CSV
 transactionToCSV t =
-  map (\p -> T.pack (show idx):date:date2:status:code:description:comment:p)
+  map (\p -> T.pack (show idx):d:d2:status:code:description:comment:p)
    (concatMap postingToCSV $ tpostings t)
   where
     idx = tindex t
     description = tdescription t
-    date = showDate (tdate t)
+    d = showDate (tdate t)
-    date2 = maybe "" showDate $ tdate2 t
+    d2 = maybe "" showDate $ tdate2 t
     status = T.pack . show $ tstatus t
     code = tcode t
     comment = T.strip $ tcomment t
@@ -186,10 +186,10 @@ postingToCSV p =
     -- separators and prices
     let a_ = amountStripPrices a{acommodity=""} in
     let showamt = wbToText . showAmountB csvDisplay in
-    let amount = showamt a_ in
+    let amt = showamt a_ in
     let credit = if q < 0 then showamt $ negate a_ else "" in
     let debit  = if q >= 0 then showamt a_ else "" in
-    [account, amount, c, credit, debit, status, comment])
+    [account, amt, c, credit, debit, status, comment])
     . amounts $ pamount p
   where
     status = T.pack . show $ pstatus p

hledger/Hledger/Cli/Commands/Register.hs

@@ -25,11 +25,11 @@ import qualified Data.Text.Lazy as TL
 import qualified Data.Text.Lazy.Builder as TB
 import System.Console.CmdArgs.Explicit (flagNone, flagReq)
 
-import Hledger
+import Hledger hiding (per)
 import Hledger.Read.CsvReader (CSV, CsvRecord, printCSV)
 import Hledger.Cli.CliOptions
 import Hledger.Cli.Utils
-import Text.Tabular.AsciiWide
+import Text.Tabular.AsciiWide hiding (render)
 
 registermode = hledgerCommandMode
   $(embedFileRelative "Hledger/Cli/Commands/Register.txt")
@@ -144,13 +144,13 @@ postingsReportItemAsText opts preferredamtwidth preferredbalwidth ((mdate, mperi
       ]
     spacerCell  = Cell BottomLeft [WideBuilder (TB.singleton ' ') 1]
     spacerCell2 = Cell BottomLeft [WideBuilder (TB.fromString "  ") 2]
-    pad fullwidth amt = WideBuilder (TB.fromText $ T.replicate w " ") w <> amt
+    pad fullwidth amt' = WideBuilder (TB.fromText $ T.replicate w " ") w <> amt'
-      where w = fullwidth - wbWidth amt
+      where w = fullwidth - wbWidth amt'
     -- calculate widths
     (totalwidth,mdescwidth) = registerWidthsFromOpts opts
     datewidth = maybe 10 periodTextWidth mperiod
     date = case mperiod of
-             Just period -> if isJust mdate then showPeriod period else ""
+             Just per -> if isJust mdate then showPeriod per else ""
              Nothing  -> maybe "" showDate mdate
     (amtwidth, balwidth)
       | shortfall <= 0 = (preferredamtwidth, preferredbalwidth)

hledger/Hledger/Cli/Commands/Rewrite.hs

@@ -20,7 +20,7 @@ import Hledger.Cli.CliOptions
 import Hledger.Cli.Commands.Print
 import System.Console.CmdArgs.Explicit
 import Text.Printf
-import Text.Megaparsec
+import Text.Megaparsec hiding (pos1)
 import qualified Data.Algorithm.Diff as D
 
 rewritemode = hledgerCommandMode
@@ -101,11 +101,11 @@ renderPatch = go Nothing . sortOn fst where
     go _ [] = ""
     go Nothing cs@((SourcePos fp _ _, _):_) = fileHeader fp <> go (Just (fp, 0)) cs
     go (Just (fp, _)) cs@((SourcePos fp' _ _, _):_) | fp /= fp' = go Nothing cs
-    go (Just (fp, offs)) ((SourcePos _ lineno _, diffs):cs) = chunkHeader <> chunk <> go (Just (fp, offs + adds - dels)) cs
+    go (Just (fp, offs)) ((SourcePos _ lineno _, diffs):cs) = chunkHeader <> chnk <> go (Just (fp, offs + adds - dels)) cs
         where
             chunkHeader = T.pack $ printf "@@ -%d,%d +%d,%d @@\n" (unPos lineno) dels (unPos lineno+offs) adds
             (dels, adds) = foldl' countDiff (0, 0) diffs
-            chunk = foldMap renderLine diffs
+            chnk = foldMap renderLine diffs
     fileHeader fp = "--- " <> T.pack fp <> "\n+++ " <> T.pack fp <> "\n"
 
     countDiff (dels, adds) = \case

hledger/Hledger/Cli/Commands/Roi.hs

@@ -92,45 +92,45 @@ roi CliOpts{rawopts_=rawopts, reportspec_=rspec@ReportSpec{_rsReportOpts=ReportO
 
   let priceDirectiveDates = dbg3 "priceDirectiveDates" $ map pddate $ jpricedirectives j
 
-  tableBody <- forM spans $ \span@(DateSpan (Just spanBegin) (Just spanEnd)) -> do
+  tableBody <- forM spans $ \spn@(DateSpan (Just begin) (Just end)) -> do
-    -- Spans are [spanBegin,spanEnd), and spanEnd is 1 day after then actual end date we are interested in
+    -- Spans are [begin,end), and end is 1 day after the actual end date we are interested in
     let
-      cashFlowApplyCostValue = map (\(d,amt) -> (d,mixedAmountValue spanEnd d amt))
+      cashFlowApplyCostValue = map (\(d,amt) -> (d,mixedAmountValue end d amt))
 
       valueBefore =
-        mixedAmountValue spanEnd spanBegin $ 
+        mixedAmountValue end begin $ 
         total trans (And [ investmentsQuery
-                         , Date (DateSpan Nothing (Just spanBegin))])
+                         , Date (DateSpan Nothing (Just begin))])
 
       valueAfter  =
-        mixedAmountValue spanEnd spanEnd $ 
+        mixedAmountValue end end $ 
         total trans (And [investmentsQuery
-                         , Date (DateSpan Nothing (Just spanEnd))])
+                         , Date (DateSpan Nothing (Just end))])
 
-      priceDates = dbg3 "priceDates" $ nub $ filter (spanContainsDate span) priceDirectiveDates
+      priceDates = dbg3 "priceDates" $ nub $ filter (spanContainsDate spn) priceDirectiveDates
       cashFlow =
         ((map (,nullmixedamt) priceDates)++) $
         cashFlowApplyCostValue $
         calculateCashFlow wd trans (And [ Not investmentsQuery
                                         , Not pnlQuery
-                                        , Date span ] )
+                                        , Date spn ] )
 
 
       pnl =
         cashFlowApplyCostValue $
         calculateCashFlow wd trans (And [ Not investmentsQuery
                                         , pnlQuery
-                                        , Date span ] )
+                                        , Date spn ] )
 
       thisSpan = dbg3 "processing span" $
-                 OneSpan spanBegin spanEnd valueBefore valueAfter cashFlow pnl
+                 OneSpan begin end valueBefore valueAfter cashFlow pnl
 
     irr <- internalRateOfReturn showCashFlow prettyTables thisSpan
     twr <- timeWeightedReturn showCashFlow prettyTables investmentsQuery trans mixedAmountValue thisSpan
     let cashFlowAmt = maNegate . maSum $ map snd cashFlow
     let smallIsZero x = if abs x < 0.01 then 0.0 else x
-    return [ showDate spanBegin
+    return [ showDate begin
-           , showDate (addDays (-1) spanEnd)
+           , showDate (addDays (-1) end)
            , T.pack $ showMixedAmount valueBefore
            , T.pack $ showMixedAmount cashFlowAmt
            , T.pack $ showMixedAmount valueAfter
@@ -148,7 +148,7 @@ roi CliOpts{rawopts_=rawopts, reportspec_=rspec@ReportSpec{_rsReportOpts=ReportO
 
   TL.putStrLn $ Tab.render prettyTables id id id table
 
-timeWeightedReturn showCashFlow prettyTables investmentsQuery trans mixedAmountValue (OneSpan spanBegin spanEnd valueBeforeAmt valueAfter cashFlow pnl) = do
+timeWeightedReturn showCashFlow prettyTables investmentsQuery trans mixedAmountValue (OneSpan begin end valueBeforeAmt valueAfter cashFlow pnl) = do
   let valueBefore = unMix valueBeforeAmt
   let initialUnitPrice = 100 :: Decimal
   let initialUnits = valueBefore / initialUnitPrice
@@ -169,16 +169,16 @@ timeWeightedReturn showCashFlow prettyTables investmentsQuery trans mixedAmountV
         $ sort
         $ datedCashflows ++ datedPnls
         where
-          zeroUnitsNeedsCashflowAtTheFront changes =
+          zeroUnitsNeedsCashflowAtTheFront changes1 =
-            if initialUnits > 0 then changes
+            if initialUnits > 0 then changes1
             else 
-              let (leadingEmptyCashFlows, rest) = span isEmptyCashflow changes
+              let (leadingEmptyCashFlows, rest) = span isEmptyCashflow changes1
                   (leadingPnls, rest') = span (isLeft . snd) rest
                   (firstCashflow, rest'') = splitAt 1 rest'
               in leadingEmptyCashFlows ++ firstCashflow ++ leadingPnls ++ rest''
 
           isEmptyCashflow (_date, amt) = case amt of
-            Right amt -> mixedAmountIsZero amt
+            Right amt' -> mixedAmountIsZero amt'
             Left _     -> False
 
           datedPnls = map (second Left) $ aggregateByDate pnl
@@ -198,16 +198,16 @@ timeWeightedReturn showCashFlow prettyTables investmentsQuery trans mixedAmountV
         tail $
         scanl
           (\(_, _, unitPrice, unitBalance) (date, amt) ->
-             let valueOnDate = unMix $ mixedAmountValue spanEnd date $ total trans (And [investmentsQuery, Date (DateSpan Nothing (Just date))])
+             let valueOnDate = unMix $ mixedAmountValue end date $ total trans (And [investmentsQuery, Date (DateSpan Nothing (Just date))])
              in
              case amt of
-               Right amt ->
+               Right amt' ->
                  -- we are buying or selling
-                 let unitsBoughtOrSold = unMix amt / unitPrice
+                 let unitsBoughtOrSold = unMix amt' / unitPrice
                  in (valueOnDate, unitsBoughtOrSold, unitPrice, unitBalance + unitsBoughtOrSold)
-               Left pnl ->
+               Left pnl' ->
                  -- PnL change
-                 let valueAfterDate = valueOnDate + unMix pnl
+                 let valueAfterDate = valueOnDate + unMix pnl'
                      unitPrice' = valueAfterDate/unitBalance
                  in (valueOnDate, 0, unitPrice', unitBalance))
           (0, 0, initialUnitPrice, initialUnits)
@@ -220,17 +220,17 @@ timeWeightedReturn showCashFlow prettyTables investmentsQuery trans mixedAmountV
                        else (unMix valueAfter) / finalUnitBalance
       -- Technically, totalTWR should be (100*(finalUnitPrice - initialUnitPrice) / initialUnitPrice), but initalUnitPrice is 100, so 100/100 == 1
       totalTWR = roundTo 2 $ (finalUnitPrice - initialUnitPrice)
-      years = fromIntegral (diffDays spanEnd spanBegin) / 365 :: Double
+      years = fromIntegral (diffDays end begin) / 365 :: Double
       annualizedTWR = 100*((1+(realToFrac totalTWR/100))**(1/years)-1) :: Double
 
   when showCashFlow $ do
-    printf "\nTWR cash flow for %s - %s\n" (showDate spanBegin) (showDate (addDays (-1) spanEnd))
+    printf "\nTWR cash flow for %s - %s\n" (showDate begin) (showDate (addDays (-1) end))
-    let (dates', amounts) = unzip changes
+    let (dates', amts) = unzip changes
-        cashflows' = map (fromRight nullmixedamt) amounts
+        cashflows' = map (fromRight nullmixedamt) amts
-        pnls = map (fromLeft nullmixedamt) amounts
+        pnls = map (fromLeft nullmixedamt) amts
         (valuesOnDate,unitsBoughtOrSold', unitPrices', unitBalances') = unzip4 units
         add x lst = if valueBefore/=0 then x:lst else lst
-        dates = add spanBegin dates'
+        dates = add begin dates'
         cashflows = add valueBeforeAmt cashflows'
         unitsBoughtOrSold = add initialUnits unitsBoughtOrSold'
         unitPrices = add initialUnitPrice unitPrices'
@@ -242,11 +242,11 @@ timeWeightedReturn showCashFlow prettyTables investmentsQuery trans mixedAmountV
        (Tab.Group DoubleLine [ Tab.Group Tab.SingleLine [Tab.Header "Portfolio value", Tab.Header "Unit balance"]
                          , Tab.Group Tab.SingleLine [Tab.Header "Pnl", Tab.Header "Cashflow", Tab.Header "Unit price", Tab.Header "Units"]
                          , Tab.Group Tab.SingleLine [Tab.Header "New Unit Balance"]])
-       [ [value, oldBalance, pnl, cashflow, prc, udelta, balance]
+       [ [val, oldBalance, pnl', cashflow, prc, udelta, balance]
-       | value <- map showDecimal valuesOnDate
+       | val <- map showDecimal valuesOnDate
        | oldBalance <- map showDecimal (0:unitBalances)
        | balance <- map showDecimal unitBalances
-       | pnl <- map showMixedAmount pnls
+       | pnl' <- map showMixedAmount pnls
        | cashflow <- map showMixedAmount cashflows
        | prc <- map showDecimal unitPrices
        | udelta <- map showDecimal unitsBoughtOrSold ])
@@ -256,28 +256,28 @@ timeWeightedReturn showCashFlow prettyTables investmentsQuery trans mixedAmountV
 
   return annualizedTWR
 
-internalRateOfReturn showCashFlow prettyTables (OneSpan spanBegin spanEnd valueBefore valueAfter cashFlow _pnl) = do
+internalRateOfReturn showCashFlow prettyTables (OneSpan begin end valueBefore valueAfter cashFlow _pnl) = do
-  let prefix = (spanBegin, maNegate valueBefore)
+  let prefix = (begin, maNegate valueBefore)
 
-      postfix = (spanEnd, valueAfter)
+      postfix = (end, valueAfter)
 
       totalCF = filter (maIsNonZero . snd) $ prefix : (sortOn fst cashFlow) ++ [postfix]
 
   when showCashFlow $ do
-    printf "\nIRR cash flow for %s - %s\n" (showDate spanBegin) (showDate (addDays (-1) spanEnd))
+    printf "\nIRR cash flow for %s - %s\n" (showDate begin) (showDate (addDays (-1) end))
-    let (dates, amounts) = unzip totalCF
+    let (dates, amts) = unzip totalCF
     TL.putStrLn $ Tab.render prettyTables id id id
       (Table
        (Tab.Group Tab.NoLine (map (Header . showDate) dates))
        (Tab.Group Tab.SingleLine [Header "Amount"])
-       (map ((:[]) . T.pack . showMixedAmount) amounts))
+       (map ((:[]) . T.pack . showMixedAmount) amts))
 
   -- 0% is always a solution, so require at least something here
   case totalCF of
     [] -> return 0
     _ -> case ridders (RiddersParam 100 (AbsTol 0.00001))
                       (0.000000000001,10000)
-                      (interestSum spanEnd totalCF) of
+                      (interestSum end totalCF) of
         Root rate    -> return ((rate-1)*100)
         NotBracketed -> error' $ "Error (NotBracketed): No solution for Internal Rate of Return (IRR).\n"
                         ++       "  Possible causes: IRR is huge (>1000000%), balance of investment becomes negative at some point in time."
@@ -301,7 +301,7 @@ total trans query = sumPostings . filter (matchesPosting query) $ concatMap real
 unMix :: MixedAmount -> Quantity
 unMix a =
   case (unifyMixedAmount $ mixedAmountCost a) of
-    Just a -> aquantity a
+    Just a' -> aquantity a'
     Nothing -> error' $ "Amounts could not be converted to a single cost basis: " ++ show (map showAmount $ amounts a) ++
                "\nConsider using --value to force all costs to be in a single commodity." ++
                "\nFor example, \"--cost --value=end,<commodity> --infer-market-prices\", where commodity is the one that was used to pay for the investment."

hledger/Hledger/Cli/Commands/Stats.hs

@@ -60,17 +60,17 @@ stats opts@CliOpts{reportspec_=rspec, progstarttime_} j = do
     (realToFrac dt :: Float) (fromIntegral numtxns / realToFrac dt :: Float)
 
 showLedgerStats :: Ledger -> Day -> DateSpan -> (TB.Builder, Int)
-showLedgerStats l today span =
+showLedgerStats l today spn =
-    (unlinesB $ map (renderRowB def{tableBorders=False, borderSpaces=False} . showRow) stats
+    (unlinesB $ map (renderRowB def{tableBorders=False, borderSpaces=False} . showRow) stts
     ,tnum)
   where
-    showRow (label, value) = Group NoLine $ map (Header . textCell TopLeft)
+    showRow (label, val) = Group NoLine $ map (Header . textCell TopLeft)
-      [fitText (Just w1) (Just w1) False True label `T.append` ": ", T.pack value]
+      [fitText (Just w1) (Just w1) False True label `T.append` ": ", T.pack val]
-    w1 = maximum $ map (T.length . fst) stats
+    w1 = maximum $ map (T.length . fst) stts
-    (stats, tnum) = ([
+    (stts, tnum) = ([
        ("Main file", path) -- ++ " (from " ++ source ++ ")")
       ,("Included files", unlines $ drop 1 $ journalFilePaths j)
-      ,("Transactions span", printf "%s to %s (%d days)" (start span) (end span) days)
+      ,("Transactions span", printf "%s to %s (%d days)" (start spn) (end spn) days)
       ,("Last transaction", maybe "none" show lastdate ++ showelapsed lastelapsed)
       ,("Transactions", printf "%d (%0.1f per day)" tnum txnrate)
       ,("Transactions last 30 days", printf "%d (%0.1f per day)" tnum30 txnrate30)
@@ -84,29 +84,29 @@ showLedgerStats l today span =
     -- Days since reconciliation   : %(reconcileelapsed)s
     -- Days since last transaction : %(recentelapsed)s
      ] 
-     ,tnum)
+     ,tnum1)
        where
          j = ljournal l
          path = journalFilePath j
-         ts = sortOn tdate $ filter (spanContainsDate span . tdate) $ jtxns j
+         ts = sortOn tdate $ filter (spanContainsDate spn . tdate) $ jtxns j
          as = nub $ map paccount $ concatMap tpostings ts
          cs = either error' Map.keys $ commodityStylesFromAmounts $ concatMap (amountsRaw . pamount) $ concatMap tpostings ts  -- PARTIAL:
          lastdate | null ts = Nothing
                   | otherwise = Just $ tdate $ last ts
          lastelapsed = fmap (diffDays today) lastdate
          showelapsed Nothing = ""
-         showelapsed (Just days) = printf " (%d %s)" days' direction
+         showelapsed (Just dys) = printf " (%d %s)" dys' direction
-                                   where days' = abs days
+                                   where dys' = abs dys
-                                         direction | days >= 0 = "days ago" :: String
+                                         direction | dys >= 0 = "days ago" :: String
                                                    | otherwise = "days from now"
-         tnum = length ts  -- Integer would be better
+         tnum1 = length ts  -- Integer would be better
          start (DateSpan (Just d) _) = show d
          start _ = ""
          end (DateSpan _ (Just d)) = show d
          end _ = ""
-         days = fromMaybe 0 $ daysInSpan span
+         days = fromMaybe 0 $ daysInSpan spn
          txnrate | days==0 = 0
-                 | otherwise = fromIntegral tnum / fromIntegral days :: Double
+                 | otherwise = fromIntegral tnum1 / fromIntegral days :: Double
          tnum30 = length $ filter withinlast30 ts
          withinlast30 t = d >= addDays (-30) today && (d<=today) where d = tdate t
          txnrate30 = fromIntegral tnum30 / 30 :: Double

hledger/Hledger/Cli/CompoundBalanceCommand.hs

@@ -22,7 +22,7 @@ import Data.Time.Calendar (Day, addDays)
 import System.Console.CmdArgs.Explicit as C
 import Hledger.Read.CsvReader (CSV, printCSV)
 import Lucid as L hiding (value_)
-import Text.Tabular.AsciiWide as Tab
+import Text.Tabular.AsciiWide as Tab hiding (render)
 
 import Hledger
 import Hledger.Cli.Commands.Balance
@@ -232,12 +232,12 @@ compoundBalanceReportAsText ropts
 
     -- | Convert a named multi balance report to a table suitable for
     -- concatenating with others to make a compound balance report table.
-    subreportAsTable ropts (title, r, _) = t
+    subreportAsTable ropts1 (title1, r, _) = t
       where
         -- convert to table
-        Table lefthdrs tophdrs cells = balanceReportAsTable ropts r
+        Table lefthdrs tophdrs cells = balanceReportAsTable ropts1 r
         -- tweak the layout
-        t = Table (Tab.Group Tab.SingleLine [Tab.Header title, lefthdrs]) tophdrs ([]:cells)
+        t = Table (Tab.Group Tab.SingleLine [Tab.Header title1, lefthdrs]) tophdrs ([]:cells)
 
 -- | Render a compound balance report as CSV.
 -- Subreports' CSV is concatenated, with the headings rows replaced by a
@@ -256,9 +256,9 @@ compoundBalanceReportAsCsv ropts (CompoundPeriodicReport title colspans subrepor
       : concatMap (subreportAsCsv ropts) subreports
   where
     -- | Add a subreport title row and drop the heading row.
-    subreportAsCsv ropts (subreporttitle, multibalreport, _) =
+    subreportAsCsv ropts1 (subreporttitle, multibalreport, _) =
       padRow subreporttitle :
-      tail (multiBalanceReportAsCsv ropts multibalreport)
+      tail (multiBalanceReportAsCsv ropts1 multibalreport)
     padRow s = take numcols $ s : repeat ""
       where
         numcols

hledger/Hledger/Cli/Main.hs

@@ -97,7 +97,7 @@ mainmode addons = defMode {
 -- | Let's go!
 main :: IO ()
 main = do
-  progstarttime <- getPOSIXTime
+  starttime <- getPOSIXTime
 
   -- Choose and run the appropriate internal or external command based
   -- on the raw command-line arguments, cmdarg's interpretation of
@@ -132,7 +132,7 @@ main = do
 
   -- parse arguments with cmdargs
   opts' <- argsToCliOpts args addons
-  let opts = opts'{progstarttime_=progstarttime}
+  let opts = opts'{progstarttime_=starttime}
 
   -- select an action and run it.
   let
@@ -143,13 +143,13 @@ main = do
     hasVersion           = ("--version" `elem`)
     printUsage           = putStr $ showModeUsage $ mainmode addons
     badCommandError      = error' ("command "++rawcmd++" is not recognized, run with no command to see a list") >> exitFailure  -- PARTIAL:
-    hasHelpFlag args     = any (`elem` args) ["-h","--help"]
+    hasHelpFlag args1     = any (`elem` args1) ["-h","--help"]
-    hasManFlag args      = (`elem` args) "--man"
+    hasManFlag args1      = (`elem` args1) "--man"
-    hasInfoFlag args     = (`elem` args) "--info"
+    hasInfoFlag args1     = (`elem` args1) "--info"
-    f `orShowHelp` mode
+    f `orShowHelp` mode1
-      | hasHelpFlag args = putStr $ showModeUsage mode
+      | hasHelpFlag args = putStr $ showModeUsage mode1
-      | hasInfoFlag args = runInfoForTopic "hledger" (headMay $ modeNames mode)
+      | hasInfoFlag args = runInfoForTopic "hledger" (headMay $ modeNames mode1)
-      | hasManFlag args  = runManForTopic "hledger" (headMay $ modeNames mode)
+      | hasManFlag args  = runManForTopic "hledger" (headMay $ modeNames mode1)
       | otherwise        = f
       -- where
       --   lastdocflag
@@ -237,7 +237,7 @@ moveFlagsAfterCommand args = moveArgs $ ensureDebugHasArg args
        (bs,["--debug"])                                    -> bs++["--debug=1"]
        _                                                   -> as
 
-    moveArgs args = insertFlagsAfterCommand $ moveArgs' (args, [])
+    moveArgs args1 = insertFlagsAfterCommand $ moveArgs' (args1, [])
       where
         -- -f FILE ..., --alias ALIAS ...
         moveArgs' ((f:v:a:as), flags) | isMovableReqArgFlag f, isValue v       = moveArgs' (a:as, flags ++ [f,v])
@@ -251,7 +251,7 @@ moveFlagsAfterCommand args = moveArgs $ ensureDebugHasArg args
         moveArgs' (as, flags) = (as, flags)
 
         insertFlagsAfterCommand ([],           flags) = flags
-        insertFlagsAfterCommand (command:args, flags) = [command] ++ flags ++ args
+        insertFlagsAfterCommand (command1:args2, flags) = [command1] ++ flags ++ args2
 
 isMovableNoArgFlag a  = "-" `isPrefixOf` a && dropWhile (=='-') a `elem` optargflagstomove ++ noargflagstomove
 

hledger/Hledger/Cli/Utils.hs

@@ -181,16 +181,16 @@ maybeFileModificationTime f = do
 
 -- | Attempt to open a web browser on the given url, all platforms.
 openBrowserOn :: String -> IO ExitCode
-openBrowserOn u = trybrowsers browsers u
+openBrowserOn = trybrowsers browsers
     where
-      trybrowsers (b:bs) u = do
+      trybrowsers (b:bs) u1 = do
-        (e,_,_) <- readProcessWithExitCode b [u] ""
+        (e,_,_) <- readProcessWithExitCode b [u1] ""
         case e of
           ExitSuccess -> return ExitSuccess
-          ExitFailure _ -> trybrowsers bs u
+          ExitFailure _ -> trybrowsers bs u1
-      trybrowsers [] u = do
+      trybrowsers [] u1 = do
         putStrLn $ printf "Could not start a web browser (tried: %s)" $ intercalate ", " browsers
-        putStrLn $ printf "Please open your browser and visit %s" u
+        putStrLn $ printf "Please open your browser and visit %s" u1
         return $ ExitFailure 127
       browsers | os=="darwin"  = ["open"]
                | os=="mingw32" = ["c:/Program Files/Mozilla Firefox/firefox.exe"]
@@ -270,11 +270,11 @@ postingsOrTransactionsReportAsText alignAll opts itemAsText itemamt itembal repo
     minWidth  = 12
     chunkSize = 1000
 
-    renderItem (amtWidth, balWidth) item@(_, amt, bal) = ((amtWidth', balWidth'), itemBuilder)
+    renderItem (amtWidth, balWidth) item@(_, amt1, bal1) = ((amtWidth', balWidth'), itemBuilder)
       where
         itemBuilder = itemAsText amtWidth' balWidth' item
-        amtWidth' = if alignAll then amtWidth else maximumStrict $ amtWidth : map wbWidth amt
+        amtWidth' = if alignAll then amtWidth else maximumStrict $ amtWidth : map wbWidth amt1
-        balWidth' = if alignAll then balWidth else maximumStrict $ balWidth : map wbWidth bal
+        balWidth' = if alignAll then balWidth else maximumStrict $ balWidth : map wbWidth bal1
 
     startWidth f = maximum $ minWidth : map wbWidth (concatMap f startAlign)
       where

hledger/Hledger/Cli/Version.hs

@@ -57,19 +57,19 @@ progname = "hledger"
 -- so that must not be overridden by a log.date git config variable.
 --
 versionStringWith :: Either String GitInfo -> ProgramName -> PackageVersion -> VersionString
-versionStringWith egitinfo progname packageversion =
+versionStringWith egitinfo prognam packagever =
-  concat [ progname , " " , version , ", " , os' , "-" , arch ]
+  concat [ prognam , " " , version , ", " , os' , "-" , arch ]
   where
     os' | os == "darwin"  = "mac"
         | os == "mingw32" = "windows"
         | otherwise       = os
     version = case egitinfo of
-      Left _err     -> packageversion
+      Left _err     -> packagever
       Right gitinfo -> 
         case words $ giCommitDate gitinfo of
           -- git log's date format is normally --date=default ("similar to --date=rfc2822")
           _weekday:mon:day:_localtime:year:_offset:_ ->
-            intercalate "-" [packageversion , hash, date]
+            intercalate "-" [packagever , hash, date]
               where
                 hash = 'g' : take 9 (giHash gitinfo)  -- like git describe
                 date = concat [year,mm,dd]

hledger/package.yaml

@@ -89,7 +89,6 @@ ghc-options:
 - -Wall
 - -Wno-incomplete-uni-patterns
 - -Wno-missing-signatures
-- -Wno-name-shadowing
 - -Wno-orphans
 - -Wno-type-defaults
 - -Wno-unused-do-bind