From 5c6ab1145319414e897a8eaca2bf1ad5558ccf24 Mon Sep 17 00:00:00 2001
From: Ryan Cumming <etaoins@gmail.com>
Date: Tue, 25 Jun 2019 21:44:27 +1000
Subject: Tweak isUnusedOrUnnecessary

The first cut was a bit rough with the blanket `unused_*` rule. This
trigger for things like `unused_mut` where the code is used but it's
suboptimal. It's misleading to grey out the code in those cases.
Instead, use an explicit list of things known to be dead code.
---
 editors/code/src/utils/rust_diagnostics.ts | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/editors/code/src/utils/rust_diagnostics.ts b/editors/code/src/utils/rust_diagnostics.ts
index 7d8cc0e0b..ed049c95e 100644
--- a/editors/code/src/utils/rust_diagnostics.ts
+++ b/editors/code/src/utils/rust_diagnostics.ts
@@ -95,8 +95,14 @@ function isUnusedOrUnnecessary(rd: RustDiagnostic): boolean {
         return false;
     }
 
-    const { code } = rd.code;
-    return code.startsWith('unused_') || code === 'dead_code';
+    return [
+        'dead_code',
+        'unknown_lints',
+        'unused_attributes',
+        'unused_imports',
+        'unused_macros',
+        'unused_variables'
+    ].includes(rd.code.code);
 }
 
 /**
-- 
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