bug(help): resolve issue when using --help (#3522)

Fixes #3195 and #3168

packages/angular-cli/ember-cli/lib/cli/cli.js

@@ -25,6 +25,16 @@ module.exports = CLI;
 CLI.prototype.run = function(environment) {
   return Promise.hash(environment).then(function(environment) {
     var args = environment.cliArgs.slice();
+
+    if (args[0] === '--help') {
+      if (args.length === 1) {
+        args[0] = 'help';
+      } else {
+        args.shift();
+        args.push('--help');
+      }
+    }
+
     var commandName = args.shift();
     var commandArgs = args;
     var helpOptions;

tests/e2e/tests/commands/help/help-option-command.ts

@@ -0,0 +1,9 @@
+import {silentNg} from '../../../utils/process';
+
+
+export default function() {
+  return Promise.resolve()
+    .then(() => silentNg('--help', 'build'))
+    .then(() => process.chdir('/'))
+    .then(() => silentNg('--help', 'build'));
+}

tests/e2e/tests/commands/help/help-option.ts

@@ -0,0 +1,9 @@
+import {silentNg} from '../../../utils/process';
+
+
+export default function() {
+  return Promise.resolve()
+    .then(() => silentNg('--help'))
+    .then(() => process.chdir('/'))
+    .then(() => silentNg('--help'));
+}

tests/e2e/tests/commands/help.ts → tests/e2e/tests/commands/help/help.ts

@@ -1,4 +1,4 @@
-import {silentNg} from '../../utils/process';
+import {silentNg} from '../../../utils/process';
 
 
 export default function() {