Revert "dont read XDG_RUNTIME_DIR"

fixes #22593

This reverts commit 867e521341.

extensions/git/src/askpass.ts

@@ -27,6 +27,10 @@ function getIPCHandlePath(nonce: string): string {
 		return `\\\\.\\pipe\\vscode-git-askpass-${nonce}-sock`;
 	}
 
+	if (process.env['XDG_RUNTIME_DIR']) {
+		return path.join(process.env['XDG_RUNTIME_DIR'], `vscode-git-askpass-${nonce}.sock`);
+	}
+
 	return path.join(os.tmpdir(), `vscode-git-askpass-${nonce}.sock`);
 }
 

src/vs/code/node/shellEnv.ts

@@ -58,6 +58,9 @@ function getUnixShellEnvironment(): TPromise<typeof process.env> {
 					delete env['ELECTRON_NO_ATTACH_CONSOLE'];
 				}
 
+				// https://github.com/Microsoft/vscode/issues/22593#issuecomment-336050758
+				delete env['XDG_RUNTIME_DIR'];
+
 				c(env);
 			} catch (err) {
 				e(err);

src/vs/platform/environment/node/environmentService.ts

@@ -15,7 +15,15 @@ import { memoize } from 'vs/base/common/decorators';
 import pkg from 'vs/platform/node/package';
 import product from 'vs/platform/node/product';
 
+// Read this before there's any chance it is overwritten
+// Related to https://github.com/Microsoft/vscode/issues/30624
+const xdgRuntimeDir = process.env['XDG_RUNTIME_DIR'];
+
 function getNixIPCHandle(userDataPath: string, type: string): string {
+	if (xdgRuntimeDir) {
+		return path.join(xdgRuntimeDir, `${pkg.name}-${pkg.version}-${type}.sock`);
+	}
+
 	return path.join(userDataPath, `${pkg.version}-${type}.sock`);
 }