From bcc450575174d5e1d9db901fc8981698847729a6 Mon Sep 17 00:00:00 2001
From: Dmitry Jemerov <yole@jetbrains.com>
Date: Tue, 18 Jun 2019 15:38:35 +0200
Subject: [PATCH] Don't run detection from content for StubVirtualFile

GitOrigin-RevId: cf33436c3c02da365fcc2144ec493b793c323d82
---
 .../intellij/openapi/fileTypes/impl/FileTypeManagerImpl.java   | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/platform/platform-impl/src/com/intellij/openapi/fileTypes/impl/FileTypeManagerImpl.java b/platform/platform-impl/src/com/intellij/openapi/fileTypes/impl/FileTypeManagerImpl.java
index 13a247a50e66..c2d8788a9566 100644
--- a/platform/platform-impl/src/com/intellij/openapi/fileTypes/impl/FileTypeManagerImpl.java
+++ b/platform/platform-impl/src/com/intellij/openapi/fileTypes/impl/FileTypeManagerImpl.java
@@ -1072,6 +1072,9 @@ public class FileTypeManagerImpl extends FileTypeManagerEx implements Persistent
     if (fileTypeByFileName != UnknownFileType.INSTANCE) {
       return false;
     }
+    if (file instanceof StubVirtualFile) {
+      return false;
+    }
 
     FileType detectedFromContentFileType = file.getUserData(DETECTED_FROM_CONTENT_FILE_TYPE_KEY);
     if (detectedFromContentFileType != null) {