Fix bad indentation problem for HsMultiIf inside parens

data/15-regressions.blt

@@ -1027,3 +1027,19 @@ func = myRecord { field      = -- comment
                                if some condition then option one else option two
                 , otherfield = "text"
                 }
+
+#test multiline guards within parenthesis
+duGswidunBlxaq drux = DeeX.Vufcqqafi
+  (tiErihambSunxo drux)
+  (if
+    | geIqzscmBhiwo drux
+    -> Bmuh "Hpiioqa a yabufx ynyuq"
+    | liWaov drux
+    -> Bmuh "Ookhup ubqocf merr ukm ynyuq iitiop"
+    | tiErihambSunxo drux && bdp (alJukIkuh drux)
+    -> Bmuh "Jpgic dfaz dieb fs wreup hsv of ynyuq dio njr subdet"
+    | ukFinwuicUgIcclcep drux
+    -> Bmuh "Egwiqae-ka-molenqe codns dif'y ns csjyhth sisoyy"
+    | otherwise
+    -> Likiotq
+  )

source/library/Language/Haskell/Brittany/Internal/ToBriDoc/Decl.hs

@@ -641,29 +641,36 @@ layoutPatternBindFinal alignmentToken binderDoc mPatDoc clauses (wrapBinds, mWhe
             $ docLines
             $ map docSetBaseY
             $ clauseDocs
-            >>= \(grhsEpAnn, guardDocs, bodyDoc) -> -- TODO92
-                  (case guardDocs of
-                      [] -> [docHandleComms grhsEpAnn docEmpty]
-                      [g] ->
-                        [ docHandleComms grhsEpAnn
-                        $ docSeq [appSep
-                        $ docLit $ Text.pack "|", return g]
-                        ]
-                      (g1 : gr) ->
-                        ( ( docHandleComms grhsEpAnn
-                          $ docSeq [appSep $ docLit $ Text.pack "|", return g1]
-                          )
-                        : (gr <&> \g ->
-                            docSeq [appSep $ docLit $ Text.pack ",", return g]
-                          )
-                        )
-                    )
-                    ++ [ docCols
-                           ColOpPrefix
-                           [ appSep $ return binderDoc
-                           , docAddBaseY BrIndentRegular $ return bodyDoc
-                           ]
-                       ]
+            >>= \(grhsEpAnn, guardDocs, bodyDoc) -> case guardDocs of
+              [] ->
+                [ docHandleComms grhsEpAnn
+                $ docCols
+                  ColOpPrefix
+                  [ appSep $ return binderDoc
+                  , docAddBaseY BrIndentRegular $ return bodyDoc
+                  ]
+                ]
+              [g] ->
+                [ docHandleComms grhsEpAnn
+                  $ docSeq [appSep $ docLit $ Text.pack "|", return g]
+                , docSeq
+                  [ appSep $ return binderDoc
+                  , docAddBaseY BrIndentRegular $ return bodyDoc
+                  ]
+                ]
+              (g1 : gr) ->
+                (  [ docHandleComms grhsEpAnn
+                     $ docSeq [appSep $ docLit $ Text.pack "|", return g1]
+                   ]
+                ++ (gr <&> \g ->
+                     docSeq [appSep $ docLit $ Text.pack ",", return g]
+                   )
+                ++ [ docSeq
+                     [ appSep $ return binderDoc
+                     , docAddBaseY BrIndentRegular $ return bodyDoc
+                     ]
+                   ]
+                )
           ]
         ++ wherePartMultiLine
 

source/library/Language/Haskell/Brittany/Internal/Transformations/T4_Columns.hs

@@ -109,15 +109,13 @@ transformSimplifyColumns = Uniplate.rewrite $ \case
     -> Just
       $ BDLines [BDCols sig1 (List.init cols ++ [line]), BDCols sig2 cols2]
   BDCols sig1 cols
-    | BDPar ind line (BDLines lines) <- List.last cols
-    , BDCols sig2 cols2 <- List.last lines
-    , sig1 == sig2
-    -> Just $ BDLines
-      [ BDCols sig1
-      $ List.init cols
-      ++ [BDPar ind line (BDLines $ List.init lines)]
-      , BDCols sig2 cols2
-      ]
+    | BDPar _ line (BDLines lines) <- List.last cols
+    , all (\case
+            BDCols sig2 _ -> sig1 == sig2
+            _ -> False
+          )
+          lines
+    -> Just $ BDLines $ BDCols sig1 (List.init cols ++ [line]) : lines
   BDLines [x] -> Just $ x
   BDLines [] -> Just $ BDEmpty
   BDSeq{} -> Nothing