Move commandline history to XDG_CACHE_HOME or %APPDATA%

package.json

@@ -600,9 +600,11 @@
     "postinstall": "node ./node_modules/vscode/bin/install"
   },
   "dependencies": {
+    "appdirectory": "0.1.0",
     "clipboardy": "1.2.3",
     "diff-match-patch": "1.0.1",
     "lodash": "4.17.10",
+    "mkdirp": "0.5.1",
     "neovim-client": "2.1.0",
     "promised-neovim-client": "2.0.2",
     "untildify": "3.0.3",

src/cmd_line/commandLineHistory.ts

@@ -3,6 +3,8 @@ import * as path from 'path';
 import { configuration } from '../configuration/configuration';
 import { logger } from '../util/logger';
 
+const mkdirp = require('mkdirp');
+
 export class CommandLineHistory {
   private static readonly _historyFileName = '.cmdline_history';
   private _historyDir: string;
@@ -59,7 +61,7 @@ export class CommandLineHistory {
     return new Promise<void>((resolve, reject) => {
       try {
         if (!fs.existsSync(this._historyDir)) {
-          fs.mkdirSync(this._historyDir, 0o775);
+          mkdirp.sync(this._historyDir, 0o775);
         }
       } catch (err) {
         logger.error(

src/util/util.ts

@@ -5,6 +5,8 @@ import { Position } from '../common/motion/position';
 import { Range } from '../common/motion/range';
 import { logger } from './logger';
 
+const AppDirectory = require('appdirectory');
+
 /**
  * This is certainly quite janky! The problem we're trying to solve
  * is that writing editor.selection = new Position() won't immediately
@@ -38,5 +40,8 @@ export async function getCursorsAfterSync(timeout: number = 0): Promise<Range[]>
 }
 
 export function getExtensionDirPath(): string {
-  return path.join(os.homedir(), '.VSCodeVim');
+  const dirs = new AppDirectory('VSCodeVim');
+  logger.debug("VSCodeVim Cache Directory: " + dirs.userCache());
+
+  return dirs.userCache();
 }