Add ${/} as a shorter alias for ${pathSeparator} predefined variable (#200750)

Fixes #180827

extensions/configuration-editing/src/configurationEditingMain.ts

@@ -66,7 +66,7 @@ function registerVariableCompletions(pattern: string): vscode.Disposable {
 					{ label: 'fileBasename', detail: vscode.l10n.t("The current opened file's basename") },
 					{ label: 'fileBasenameNoExtension', detail: vscode.l10n.t("The current opened file's basename with no file extension") },
 					{ label: 'defaultBuildTask', detail: vscode.l10n.t("The name of the default build task. If there is not a single default build task then a quick pick is shown to choose the build task.") },
-					{ label: 'pathSeparator', detail: vscode.l10n.t("The character used by the operating system to separate components in file paths") },
+					{ label: 'pathSeparator', detail: vscode.l10n.t("The character used by the operating system to separate components in file paths. Is also aliased to '/'.") },
 					{ label: 'extensionInstallFolder', detail: vscode.l10n.t("The path where an an extension is installed."), param: 'publisher.extension' },
 				].map(variable => ({
 					label: `\${${variable.label}}`,

src/vs/workbench/services/configurationResolver/common/configurationResolver.ts

@@ -107,7 +107,8 @@ export enum VariableKind {
 	FileDirnameBasename = 'fileDirnameBasename',
 	ExecPath = 'execPath',
 	ExecInstallFolder = 'execInstallFolder',
-	PathSeparator = 'pathSeparator'
+	PathSeparator = 'pathSeparator',
+	PathSeparatorAlias = '/'
 }
 
 export class VariableError extends Error {

src/vs/workbench/services/configurationResolver/common/variableResolver.ts

@@ -368,6 +368,7 @@ export class AbstractVariableResolverService implements IConfigurationResolverSe
 						return match;
 					}
 					case 'pathSeparator':
+					case '/':
 						return paths.sep;
 
 					default: