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Revert "Explicitly preserve Closedness on both sides under mappend."

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This reverts commit bd4094153350b67d383edffd1f22fbd97de81774.
This commit is contained in:
Rob Rix 2016-03-15 15:08:26 -04:00
parent 718b905375
commit 970a3b24d3
1 changed files with 1 additions and 2 deletions
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src/Line.hs
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@ -54,8 +54,7 @@ instance Applicative Line where
instance Monoid (Line a) where instance Monoid (Line a) where
mempty = Line [] mempty = Line []
mappend xs ys | isOpen xs && isOpen ys = Line (unLine xs `mappend` unLine ys) mappend xs ys = lineMap (mappend (unLine xs)) ys
| otherwise = Closed (unLine xs `mappend` unLine ys)
instance Coalescent (Line a) where instance Coalescent (Line a) where
coalesce a b | isOpen a = pure (a `mappend` b) coalesce a b | isOpen a = pure (a `mappend` b)