Print trivia assigned to brackets of ArrayOrListOfSeqExpr.

src/Fantomas.Tests/ListTests.fs

@@ -380,10 +380,12 @@ let ``line comment inside list`` () =
 """
         ({ config with
                SpaceAroundDelimiter = false })
+    |> prepend newline
     |> should
         equal
-        """[7
- // foo
+        """
+[7
+// foo
 ]
 """
 
@@ -396,10 +398,12 @@ let ``line comment inside array`` () =
 |]
 """
         config
+    |> prepend newline
     |> should
         equal
-        """[| 7
-   // foo
+        """
+[| 7
+// foo
  |]
 """
 
@@ -2222,3 +2226,30 @@ let foo =
     [| fun () -> 1
        fun () -> 2 |]
 """
+
+[<Test>]
+let ``comment before closing bracket`` () =
+    formatSourceString
+        false
+        """
+let fns =
+    [ { x = "long enough to not go to one line"
+        y = 5 }
+ //      { name = fn "String" "endsWith" 0
+ //        deprecated = NotDeprecated }
+ // I think the space at the start of the lines above matter
+     ]
+"""
+        config
+    |> prepend newline
+    |> should
+        equal
+        """
+let fns =
+    [ { x = "long enough to not go to one line"
+        y = 5 }
+    //      { name = fn "String" "endsWith" 0
+    //        deprecated = NotDeprecated }
+    // I think the space at the start of the lines above matter
+     ]
+"""

src/Fantomas.Tests/MultilineBlockBracketsOnSameColumnArrayOrListTests.fs

@@ -330,3 +330,63 @@ let foo =
         fun () -> 2
     |]
 """
+
+[<Test>]
+let ``comments before closing bracket`` () =
+    formatSourceString
+        false
+        """
+let fns =
+    [ { x = "long enough to not go to one line"
+        y = 5 }
+ //      { name = fn "String" "endsWith" 0
+ //        deprecated = NotDeprecated }
+ // I think the space at the start of the lines above matter
+     ]
+"""
+        config
+    |> prepend newline
+    |> should
+        equal
+        """
+let fns =
+    [
+        {
+            x = "long enough to not go to one line"
+            y = 5
+        }
+    //      { name = fn "String" "endsWith" 0
+    //        deprecated = NotDeprecated }
+    // I think the space at the start of the lines above matter
+    ]
+"""
+
+[<Test>]
+let ``comments before closing bracket, array`` () =
+    formatSourceString
+        false
+        """
+let fns =
+    [| { x = "long enough to not go to one line"
+         y = 5 }
+ //      { name = fn "String" "endsWith" 0
+ //        deprecated = NotDeprecated }
+ // I think the space at the start of the lines above matter
+    |]
+"""
+        config
+    |> prepend newline
+    |> should
+        equal
+        """
+let fns =
+    [|
+        {
+            x = "long enough to not go to one line"
+            y = 5
+        }
+    //      { name = fn "String" "endsWith" 0
+    //        deprecated = NotDeprecated }
+    // I think the space at the start of the lines above matter
+    |]
+"""

src/Fantomas/CodePrinter.fs

@@ -1454,30 +1454,45 @@ and genExpr astContext synExpr ctx =
                     ColMultilineItem(expr, sepNln, r))
             |> colWithNlnWhenItemIsMultiline
 
-        | ArrayOrListOfSeqExpr (isArray, e) as aNode ->
+        | ArrayOrListOfSeqExpr (isArray, e) as alNode ->
             let astContext = { astContext with IsNakedRange = true }
+            let tokenSize = if isArray then 2 else 1
+
+            let openingTokenRange =
+                ctx.MkRangeWith
+                    (alNode.Range.Start.Line, alNode.Range.Start.Column)
+                    (alNode.Range.Start.Line, (alNode.Range.Start.Column + tokenSize))
+
+            let closingTokenRange =
+                ctx.MkRangeWith
+                    (alNode.Range.End.Line, (alNode.Range.End.Column - tokenSize))
+                    (alNode.Range.End.Line, alNode.Range.End.Column)
+
 
             let shortExpression =
                 ifElse
                     isArray
-                    (sepOpenA
+                    ((tokN openingTokenRange LBRACK_BAR sepOpenA)
                      +> atCurrentColumnIndent (genExpr astContext e)
-                     +> enterRightBracketBar aNode.Range
-                     +> sepCloseA)
-                    (sepOpenL
+                     +> (tokN closingTokenRange BAR_RBRACK sepCloseA))
+                    ((tokN openingTokenRange LBRACK sepOpenL)
                      +> atCurrentColumnIndent (genExpr astContext e)
-                     +> enterRightBracket aNode.Range
-                     +> sepCloseL
-                     +> leaveNodeTokenByName aNode.Range RBRACK)
+                     +> (tokN closingTokenRange RBRACK sepCloseL))
 
             let bracketsOnSameColumn =
-                ifElse isArray sepOpenAFixed sepOpenLFixed
+                ifElse
+                    isArray
+                    (tokN openingTokenRange LBRACK_BAR sepOpenAFixed)
+                    (tokN openingTokenRange LBRACK sepOpenLFixed)
                 +> indent
                 +> sepNln
                 +> genExpr astContext e
                 +> unindent
                 +> sepNln
-                +> ifElse isArray sepCloseAFixed sepCloseLFixed
+                +> ifElse
+                    isArray
+                    (tokN closingTokenRange BAR_RBRACK sepCloseAFixed)
+                    (tokN closingTokenRange RBRACK sepCloseLFixed)
 
             let multilineExpression =
                 ifAlignBrackets bracketsOnSameColumn shortExpression