From a5388fed60822d57dda7196ac0e5b1fb2aa70597 Mon Sep 17 00:00:00 2001
From: Thomas Droxler <thomas.droxler@gmail.com>
Date: Fri, 21 Dec 2018 14:24:03 +0100
Subject: [PATCH] Preserve errors order when publishing diagnostics

The `sbt-server` was prepending a new probem and not appending.

The result was a `textDocument/publishDiagnostics` notification
containing a inverted list of problems compare to what was show in the
sbt console.
---
 .../main/scala/sbt/internal/server/LanguageServerReporter.scala | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/main/src/main/scala/sbt/internal/server/LanguageServerReporter.scala b/main/src/main/scala/sbt/internal/server/LanguageServerReporter.scala
index ec4137480..1f8cfd290 100644
--- a/main/src/main/scala/sbt/internal/server/LanguageServerReporter.scala
+++ b/main/src/main/scala/sbt/internal/server/LanguageServerReporter.scala
@@ -51,7 +51,7 @@ class LanguageServerReporter(
     val pos = problem.position
     pos.sourceFile.toOption foreach { sourceFile: File =>
       problemsByFile.get(sourceFile) match {
-        case Some(xs: List[Problem]) => problemsByFile(sourceFile) = problem :: xs
+        case Some(xs: List[Problem]) => problemsByFile(sourceFile) = xs :+ problem
         case _                       => problemsByFile(sourceFile) = List(problem)
       }
     }