add configuration-editing extension that proposes commands in keybind…

…ings.json, #7185

extensions/configuration-editing/OSSREADME.json

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+// ATTENTION - THIS DIRECTORY CONTAINS THIRD PARTY OPEN SOURCE MATERIALS:
+
+[{
+	"name": "Microsoft/node-jsonc-parser",
+	"version": "0.0.0",
+	"license": "MIT",
+	"isProd": true,
+	"repositoryURL": "https://github.com/Microsoft/node-jsonc-parser"
+}]

extensions/configuration-editing/package.json

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+{
+	"name": "configuration-editing",
+	"version": "0.0.1",
+	"publisher": "vscode",
+	"engines": {
+		"vscode": "^1.0.0"
+	},
+	"categories": [
+		"Languages", "Other"
+	],
+	"activationEvents": [
+		"onLanguage:json"
+	],
+	"main": "./out/extension",
+	"scripts": {
+		"compile": "gulp compile-extension:configuration-editing",
+		"watch": "gulp watch-extension:configuration-editing"
+	},
+	"devDependencies": {
+		"vscode": "^0.11.0"
+	},
+	"dependencies": {
+		"jsonc-parser": "^0.2.1"
+	}
+}

extensions/configuration-editing/src/extension.ts

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+/*---------------------------------------------------------------------------------------------
+ *  Copyright (c) Microsoft Corporation. All rights reserved.
+ *  Licensed under the MIT License. See License.txt in the project root for license information.
+ *--------------------------------------------------------------------------------------------*/
+
+'use strict';
+
+import * as vscode from 'vscode';
+import {getLocation} from 'jsonc-parser';
+
+export function activate(context) {
+
+	const commands = vscode.commands.getCommands(true);
+
+	//keybindings.json command-suggestions
+	const disposable = vscode.languages.registerCompletionItemProvider({ pattern: '**/keybindings.json' }, {
+
+		provideCompletionItems(document, position, token) {
+			const location = getLocation(document.getText(), document.offsetAt(position));
+			if (location.path[1] === 'command') {
+				return commands.then(ids => {
+					return ids.map(id => {
+						let item = new vscode.CompletionItem(id);
+						item.kind = vscode.CompletionItemKind.Value;
+						return item;
+					});
+				});
+			}
+		}
+	});
+
+	context.subscriptions.push(disposable);
+}

extensions/configuration-editing/src/typings/ref.d.ts

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+/*---------------------------------------------------------------------------------------------
+ *  Copyright (c) Microsoft Corporation. All rights reserved.
+ *  Licensed under the MIT License. See License.txt in the project root for license information.
+ *--------------------------------------------------------------------------------------------*/
+
+/// <reference path='../../../../src/vs/vscode.d.ts'/>
+/// <reference path='../../../../src/typings/mocha.d.ts'/>
+/// <reference path='../../../../extensions/node.d.ts'/>
+/// <reference path='../../../../extensions/lib.core.d.ts'/>
+/// <reference path='../../../../extensions/declares.d.ts'/>