Add Crystal language to ignoreCompletionTrigger default configuration

Author: Copilot

package.json

@@ -632,6 +632,7 @@
 					},
 					"default": [
 						"coffeescript",
+						"crystal",
 						"diff",
 						"dockerfile",
 						"dockercompose",

src/test/issues/issueCompletionProvider.test.ts

@@ -0,0 +1,50 @@
+/*---------------------------------------------------------------------------------------------
+ *  Copyright (c) Microsoft Corporation. All rights reserved.
+ *  Licensed under the MIT License. See License.txt in the project root for license information.
+ *--------------------------------------------------------------------------------------------*/
+
+import { default as assert } from 'assert';
+import * as vscode from 'vscode';
+
+describe('IssueCompletionProvider Configuration', function () {
+	it('should include Crystal in default ignore completion trigger list', function () {
+		// This test checks that the default configuration includes Crystal
+		// We access this by examining the configuration contribution from package.json
+		const config = vscode.workspace.getConfiguration('githubIssues');
+		const defaultIgnoreList = config.inspect('ignoreCompletionTrigger')?.defaultValue as string[];
+
+		assert(Array.isArray(defaultIgnoreList), 'Default ignore list should be an array');
+		assert(defaultIgnoreList.includes('crystal'), 'Default configuration should include Crystal language in ignore list');
+
+		// Also verify other expected languages are still there
+		const expectedLanguages = ['python', 'ruby', 'perl', 'powershell', 'julia', 'coffeescript'];
+		for (const language of expectedLanguages) {
+			assert(defaultIgnoreList.includes(language), `Default configuration should include ${language} in ignore list`);
+		}
+
+		// Verify the list is properly maintained in alphabetical order around crystal
+		const crystalIndex = defaultIgnoreList.indexOf('crystal');
+		const coffeeIndex = defaultIgnoreList.indexOf('coffeescript');
+		const diffIndex = defaultIgnoreList.indexOf('diff');
+
+		assert(crystalIndex > coffeeIndex, 'Crystal should come after coffeescript alphabetically');
+		assert(crystalIndex < diffIndex, 'Crystal should come before diff alphabetically');
+	});
+
+	it('should verify ignored languages configuration structure', function () {
+		const config = vscode.workspace.getConfiguration('githubIssues');
+		const configInfo = config.inspect('ignoreCompletionTrigger');
+
+		// Verify that the configuration exists and has proper structure
+		assert(configInfo, 'ignoreCompletionTrigger configuration should exist');
+		assert(configInfo.defaultValue, 'Should have a default value');
+		assert(Array.isArray(configInfo.defaultValue), 'Default value should be an array');
+
+		// Verify that crystal is in the list (this is the core fix)
+		const defaultList = configInfo.defaultValue as string[];
+		assert(defaultList.includes('crystal'), 'Crystal should be included in the default ignore list');
+
+		// Verify list has reasonable size (should have multiple languages)
+		assert(defaultList.length > 10, 'Should have a reasonable number of ignored languages');
+	});
+});