Operating System Specific Properties in launch.json

fixes #1873

src/vs/workbench/parts/debug/common/debug.ts

@@ -12,7 +12,7 @@ import { IViewletView } from 'vs/workbench/browser/viewlet';
 import { createDecorator, ServiceIdentifier } from 'vs/platform/instantiation/common/instantiation';
 import editor = require('vs/editor/common/editorCommon');
 import { Source } from 'vs/workbench/parts/debug/common/debugSource';
-import {Range} from 'vs/editor/common/core/range';
+import { Range } from 'vs/editor/common/core/range';
 
 export const VIEWLET_ID = 'workbench.view.debug';
 export const REPL_ID = 'workbench.panel.repl';
@@ -194,7 +194,7 @@ export interface IGlobalConfig {
 	configurations: IConfig[];
 }
 
-export interface IConfig {
+export interface IEnvConfig {
 	name?: string;
 	type: string;
 	request: string;
@@ -217,6 +217,12 @@ export interface IConfig {
 	silentlyAbort?: boolean;
 }
 
+export interface IConfig extends IEnvConfig {
+	windows?: IEnvConfig;
+	osx?: IEnvConfig;
+	linux?: IEnvConfig;
+}
+
 export interface IRawEnvAdapter {
 	type?: string;
 	label?: string;

src/vs/workbench/parts/debug/node/debugAdapter.ts

@@ -114,6 +114,18 @@ export class Adapter {
 					default: 'openOnFirstSessionStart',
 					description: nls.localize('internalConsoleOptions', "Controls behavior of the internal debug console.")
 				};
+				properties.windows = {
+					type: 'object',
+					description: nls.localize('debugWindowsConfiguration', "Windows specific launch configuration attributes.")
+				};
+				properties.osx = {
+					type: 'object',
+					description: nls.localize('debugOSXConfiguration', "OS X specific launch configuration attributes.")
+				};
+				properties.linux = {
+					type: 'object',
+					description: nls.localize('debugLinuxConfiguration', "Linux specific launch configuration attributes.")
+				};
 				this.warnRelativePaths(properties.outDir);
 				this.warnRelativePaths(properties.program);
 				this.warnRelativePaths(properties.cwd);

src/vs/workbench/parts/debug/node/debugConfigurationManager.ts

@@ -8,6 +8,7 @@ import nls = require('vs/nls');
 import { sequence } from 'vs/base/common/async';
 import { TPromise } from 'vs/base/common/winjs.base';
 import strings = require('vs/base/common/strings');
+import {isLinux, isMacintosh, isWindows} from 'vs/base/common/platform';
 import Event, { Emitter } from 'vs/base/common/event';
 import objects = require('vs/base/common/objects');
 import uri from 'vs/base/common/uri';
@@ -288,6 +289,23 @@ export class ConfigurationManager implements debug.IConfigurationManager {
 				this.configuration = objects.deepClone(nameOrConfig);
 			}
 
+			// Set operating system specific properties #1873
+			if (isWindows && this.configuration.windows) {
+				Object.keys(this.configuration.windows).forEach(key => {
+					this.configuration[key] = this.configuration.windows[key];
+				});
+			}
+			if (isMacintosh && this.configuration.osx) {
+				Object.keys(this.configuration.osx).forEach(key => {
+					this.configuration[key] = this.configuration.osx[key];
+				});
+			}
+			if (isLinux && this.configuration.linux) {
+				Object.keys(this.configuration.linux).forEach(key => {
+					this.configuration[key] = this.configuration.linux[key];
+				});
+			}
+
 			// massage configuration attributes - append workspace path to relatvie paths, substitute variables in paths.
 			if (this.configuration && this.systemVariables) {
 				Object.keys(this.configuration).forEach(key => {