Indented one step from the match/|.

src/Fantomas.Tests/ComputationExpressionTests.fs

@@ -1609,25 +1609,25 @@ let rec loop () =
 
     match msg with
     | Handle (eventSource, command, reply) ->
-        let! stream = eventSource |> eventStore.GetStream
-
-        let newEvents =
-          stream
-          |> Result.map (
-            asEvents
-            >> behaviour command
-            >> enveloped eventSource
-          )
+      let! stream = eventSource |> eventStore.GetStream
+
+      let newEvents =
+        stream
+        |> Result.map (
+          asEvents
+          >> behaviour command
+          >> enveloped eventSource
+        )
 
-        let! result =
-          newEvents
-          |> function
-          | Ok events -> eventStore.Append events
-          | Error err -> async { return Error err}
+      let! result =
+        newEvents
+        |> function
+        | Ok events -> eventStore.Append events
+        | Error err -> async { return Error err}
 
-        do reply.Reply result
+      do reply.Reply result
 
-        return! loop ()
+      return! loop ()
   }
 """
 
@@ -2199,11 +2199,11 @@ type ProjectController(checker: FSharpChecker) =
     async {
       match Environment.workspaceLoadDelay () with
       | delay when delay > TimeSpan.Zero ->
-          do!
-            Async.Sleep(
-              Environment.workspaceLoadDelay().TotalMilliseconds
-              |> int
-            )
+        do!
+          Async.Sleep(
+            Environment.workspaceLoadDelay().TotalMilliseconds
+            |> int
+          )
       | _ -> ()
 
       return true
@@ -2237,11 +2237,11 @@ type ProjectController(checker: FSharpChecker) =
     async {
       match Environment.workspaceLoadDelay () with
       | delay when delay > TimeSpan.Zero ->
-          do
-            NonAsync.Sleep(
-              Environment.workspaceLoadDelay().TotalMilliseconds
-              |> int
-            )
+        do
+          NonAsync.Sleep(
+            Environment.workspaceLoadDelay().TotalMilliseconds
+            |> int
+          )
       | _ -> ()
 
       return true

src/Fantomas.Tests/IfThenElseTests.fs

@@ -1651,14 +1651,14 @@ let tryDecompile (ty: FSharpEntity) =
     match ty.TryFullName with
     | Some fullName -> return decompile ty.Assembly.SimpleName externalSym
     | None ->
-        // might be abbreviated type (like string)
-        return!
-          (if ty.IsFSharpAbbreviation then
-             Some ty.AbbreviatedType
-           else
-             None)
-          |> tryGetTypeDef
-          |> tryGetSource
+      // might be abbreviated type (like string)
+      return!
+        (if ty.IsFSharpAbbreviation then
+           Some ty.AbbreviatedType
+         else
+           None)
+        |> tryGetTypeDef
+        |> tryGetSource
   }
 """
 

src/Fantomas.Tests/PatternMatchingTests.fs

@@ -587,8 +587,8 @@ match x with
         """
 match x with
 | Some y ->
-    let z = 1
-    Some(y + z)
+  let z = 1
+  Some(y + z)
 | None -> None
 """
 
@@ -1387,3 +1387,26 @@ match!
 | "" -> x
 | _ -> failwith ""
 """
+
+[<Test>]
+let ``indented one step from the match/|., 1501`` () =
+    formatSourceString
+        false
+        """
+match x with
+| Some y ->
+    // meh
+    y
+| None -> 42
+"""
+        { config with IndentSize = 2 }
+    |> prepend newline
+    |> should
+        equal
+        """
+match x with
+| Some y ->
+  // meh
+  y
+| None -> 42
+"""

src/Fantomas/CodePrinter.fs

@@ -4377,12 +4377,8 @@ and genClause astContext hasBar (Clause (p, e, eo) as ce) =
         +> fun ctx -> leaveNodeTokenByName (arrowRange ctx) RARROW ctx
 
     genTriviaBeforeClausePipe p.Range
-    +> ifElse
-        hasBar
-        (sepBar +> atCurrentColumnWithPrepend pat body
-         |> genTriviaFor SynMatchClause_Clause ce.Range)
-        (pat +> body
-         |> genTriviaFor SynMatchClause_Clause ce.Range)
+    +> (onlyIf hasBar sepBar +> pat +> body
+        |> genTriviaFor SynMatchClause_Clause ce.Range)
 
 /// Each multiline member definition has a pre and post new line.
 and genMemberDefnList astContext nodes =