From 0d0e0042de53f26c1d1eac0173e54292bb8a0cdc Mon Sep 17 00:00:00 2001
From: Sean McManus <seanmcm@microsoft.com>
Date: Mon, 20 Apr 2020 11:35:38 -0700
Subject: [PATCH] Fix duplicate config squiggles. (#5323)

---
 Extension/src/LanguageServer/configurations.ts | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/Extension/src/LanguageServer/configurations.ts b/Extension/src/LanguageServer/configurations.ts
index fee41f8212..f88c0ed9b5 100644
--- a/Extension/src/LanguageServer/configurations.ts
+++ b/Extension/src/LanguageServer/configurations.ts
@@ -1300,8 +1300,16 @@ export class CppProperties {
             const compilerPathStart: number = curText.search(/\s*\"compilerPath\"\s*:\s*\"/);
             const compilerPathEnd: number = compilerPathStart === -1 ? -1 : curText.indexOf('"', curText.indexOf('"', curText.indexOf(":", compilerPathStart)) + 1) + 1;
 
+            let processedPaths: Set<string> = new Set<string>();
+
             // Validate paths
             for (let curPath of paths) {
+                if (processedPaths.has(curPath)) {
+                    // Avoid duplicate squiggles for the same line.
+                    // Squiggles for the same path on different lines are already handled below.
+                    continue;
+                }
+                processedPaths.add(curPath);
                 const isCompilerPath: boolean = curPath === currentConfiguration.compilerPath;
                 // Resolve special path cases.
                 if (curPath === "${default}") {