From d13630906b9919c4416373495205fb339eadf80f Mon Sep 17 00:00:00 2001
From: nojaf <florian.verdonck@outlook.com>
Date: Wed, 5 Feb 2020 21:25:43 +0100
Subject: [PATCH] Printing trivia after SynConst. Fixes #598.

---
 src/Fantomas.Tests/SynConstTests.fs | 29 ++++++++++++++++++++++++++++-
 src/Fantomas/CodePrinter.fs         |  2 +-
 2 files changed, 29 insertions(+), 2 deletions(-)

diff --git a/src/Fantomas.Tests/SynConstTests.fs b/src/Fantomas.Tests/SynConstTests.fs
index 4f0326dc6b..327531aec2 100644
--- a/src/Fantomas.Tests/SynConstTests.fs
+++ b/src/Fantomas.Tests/SynConstTests.fs
@@ -100,4 +100,31 @@ let nullstr = "\u0000"
     |> should equal """
 let nulchar = '\u0000'
 let nullstr = "\u0000"
-"""
\ No newline at end of file
+"""
+
+[<Test>]
+let ``line comment after custom measure type, 598`` () =
+    formatSourceString false """namespace Krach
+
+module Runner =
+
+    let mPerSecond = 1000<m/second> // foo
+
+    [<Measure>]
+    type ProcessId =
+        class
+        end
+"""  config
+    |> prepend newline
+    |> should equal """
+namespace Krach
+
+module Runner =
+
+    let mPerSecond = 1000<m/second> // foo
+
+    [<Measure>]
+    type ProcessId =
+        class
+        end
+"""
diff --git a/src/Fantomas/CodePrinter.fs b/src/Fantomas/CodePrinter.fs
index 6e44fd8878..c9f7c1ad80 100644
--- a/src/Fantomas/CodePrinter.fs
+++ b/src/Fantomas/CodePrinter.fs
@@ -2308,7 +2308,7 @@ and genConst (c:SynConst) (r:range) =
             | Measure m -> !- m
 
         genConstNumber c r +> measure
-
+    |> genTrivia r
 and genConstNumber (c:SynConst) (r: range) =
     fun (ctx: Context) ->
         ctx.Trivia