Use docAltFilter for consistency.

src/Language/Haskell/Brittany/Internal/Layouters/Stmt.hs

@@ -64,17 +64,19 @@ layoutStmt lstmt@(L _ stmt) = do
           (docLit $ Text.pack "let")
           (docSetBaseAndIndent $ return bindDoc)
         ]
-      Just bindDocs ->
-        let letSeq = docSeq
+      Just bindDocs -> docAltFilter
+        [ ( indentPolicy /= IndentPolicyLeft
+          , docSeq
             [ appSep $ docLit $ Text.pack "let"
             , docSetBaseAndIndent $ docLines $ return <$> bindDocs
             ]
-            letRegular = docAddBaseY BrIndentRegular $ docPar
+          )
+        , ( True
+          , docAddBaseY BrIndentRegular $ docPar
             (docLit $ Text.pack "let")
             (docSetBaseAndIndent $ docLines $ return <$> bindDocs)
-        in  case indentPolicy of
-              IndentPolicyLeft -> docAlt [letRegular]
-              _                -> docAlt [letSeq, letRegular]
+          )
+        ]
     RecStmt stmts _ _ _ _ _ _ _ _ _ -> do
       docSeq
         [ docLit (Text.pack "rec")