Don't show notification after local query cancellation (#3489)

* Don't show notification after local query cancellation

* Update CHANGELOG

extensions/ql-vscode/CHANGELOG.md

@@ -2,6 +2,7 @@
 
 ## [UNRELEASED]
 
+- Don't show notification after local query cancellation. [#3489](https://github.com/github/vscode-codeql/pull/3489)
 - Databases created from [CodeQL test cases](https://docs.github.com/en/code-security/codeql-cli/using-the-advanced-functionality-of-the-codeql-cli/testing-custom-queries) are now copied into a shared VS Code storage location. This avoids a bug where re-running test cases would fail if the test's database is already imported into the workspace. [#3433](https://github.com/github/vscode-codeql/pull/3433)
 
 ## 1.12.3 - 29 February 2024

extensions/ql-vscode/src/local-queries/local-queries.ts

@@ -2,7 +2,10 @@ import type {
   ProgressCallback,
   ProgressUpdate,
 } from "../common/vscode/progress";
-import { withProgress } from "../common/vscode/progress";
+import {
+  UserCancellationException,
+  withProgress,
+} from "../common/vscode/progress";
 import type { CancellationToken, Range, TabInputText } from "vscode";
 import { CancellationTokenSource, Uri, window } from "vscode";
 import {
@@ -492,7 +495,12 @@ export class LocalQueries extends DisposableObject {
         // to unify both error handling paths.
         const err = asError(e);
         await localQueryRun.fail(err);
-        throw e;
+
+        if (token.isCancellationRequested) {
+          throw new UserCancellationException(err.message, true);
+        } else {
+          throw e;
+        }
       }
     } finally {
       source.dispose();