Improve block-comment behaviour (newlines after or not)

data/11-extensions/overloadedrecorddot.blt

@@ -7,7 +7,7 @@ recorddot1 = a.b.c
 #test getfield
 {-# LANGUAGE OverloadedRecordDot #-}
 recorddot2 =
-  {-before-}a.b.c{-after-}
+  {-before-} a.b.c {-after-}
 
 #test projection
 {-# LANGUAGE OverloadedRecordDot #-}

source/library/Language/Haskell/Brittany/Internal/WriteBriDoc/Operators.hs

@@ -119,24 +119,42 @@ layoutWriteComment
   -> m ()
 layoutWriteComment absolute isBlock dp commentLines s = do -- TODO92 we don't move to comment pos at all!
   let (y, x) = case dp of
-         GHC.SameLine c -> (0, c)
-         GHC.DifferentLine l c -> (l, c)
+        GHC.SameLine c        -> (0, c)
+        GHC.DifferentLine l c -> (l, c)
   state <- mGet
-  mTell $ Text.Builder.fromString $ replicate y '\n' ++ replicate (if absolute && (y > 0) then x-1 else x) ' '
+  mTell $ Text.Builder.fromString $ replicate y '\n' ++ replicate
+    (if absolute && (y > 0) then x - 1 else x)
+    ' '
   mTell $ Text.Builder.fromText s
-  traceLocal ("layoutMoveToCommentPos", y, x, commentLines, _lstate_plannedSpace state, lstate_baseY state)
+  traceLocal
+    ( "layoutMoveToCommentPos"
+    , y
+    , x
+    , commentLines
+    , _lstate_plannedSpace state
+    , lstate_baseY state
+    )
   mSet state
-    { _lstate_plannedSpace = if isBlock
-      then PlannedSameline 0
+    { _lstate_plannedSpace    = if isBlock
+      then case _lstate_plannedSpace state of
+        PlannedNone         -> PlannedSameline 1
+        p@PlannedSameline{} -> p
+        PlannedNewline l ->
+          if l <= y then PlannedSameline 1 else PlannedNewline (l - y)
+        PlannedDelta l i ->
+          if l <= y then PlannedSameline 1 else PlannedDelta (l - y) i
       else case _lstate_plannedSpace state of
-        PlannedNone -> PlannedDelta 1 (_lstate_curY state)
-        PlannedSameline i -> PlannedDelta 1 (_lstate_curY state + i)
+        PlannedNone        -> PlannedDelta 1 (_lstate_curY state)
+        PlannedSameline i  -> PlannedDelta 1 (_lstate_curY state + i)
         p@PlannedNewline{} -> p
-        p@PlannedDelta{} -> p
-    , _lstate_commentNewlines =
-      _lstate_commentNewlines state + y + commentLines - 1
-    , _lstate_curY = if y == 0 then _lstate_curY state + x + Text.length s
-        else x + Text.length s
+        p@PlannedDelta{}   -> p
+    , _lstate_commentNewlines = _lstate_commentNewlines state
+                                + y
+                                + commentLines
+                                - 1
+    , _lstate_curY            = if y == 0
+                                  then _lstate_curY state + x + Text.length s
+                                  else x + Text.length s
     }