ui: support all results of showGenericSourcePos

Resolves simonmichael/hledger#904

hledger-lib/Hledger/Data/Transaction.hs

@@ -71,6 +71,8 @@ sourceFirstLine = \case
     GenericSourcePos _ line _ -> line
     JournalSourcePos _ (line, _) -> line
 
+-- | Render source position in human-readable form.
+-- Keep in sync with Hledger.UI.ErrorScreen.hledgerparseerrorpositionp (temporary). XXX
 showGenericSourcePos :: GenericSourcePos -> String
 showGenericSourcePos = \case
     GenericSourcePos fp line column -> show fp ++ " (line " ++ show line ++ ", column " ++ show column ++ ")"

hledger-ui/Hledger/UI/ErrorScreen.hs

@@ -110,15 +110,27 @@ esHandle _ _ = error "event handler called with wrong screen type, should not ha
 
 -- | Parse the file name, line and column number from a hledger parse error message, if possible.
 -- Temporary, we should keep the original parse error location. XXX
+-- Keep in sync with 'Hledger.Data.Transaction.showGenericSourcePos'
 hledgerparseerrorpositionp :: ParsecT Void String t (String, Int, Int)
 hledgerparseerrorpositionp = do
   anySingle `manyTill` char '"'
   f <- anySingle `manyTill` (oneOf ['"','\n'])
-  string " (line "
-  l <- read <$> some digitChar
-  string ", column "
-  c <- read <$> some digitChar
-  return (f, l, c)
+  choice [
+      do
+          string " (line "
+          l <- read <$> some digitChar
+          string ", column "
+          c <- read <$> some digitChar
+          return (f, l, c),
+      do
+          string " (lines "
+          l <- read <$> some digitChar
+          char '-'
+          some digitChar
+          char ')'
+          return (f, l, 1)
+      ]
+
 
 -- Unconditionally reload the journal, regenerating the current screen
 -- and all previous screens in the history.