Flip .packages server support bit.

pkg/analysis_server/lib/src/context_manager.dart

 // Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 library context.directory.manager;
 
 import 'dart:async';
 import 'dart:collection';
 import 'dart:convert';
 import 'dart:core' hide Resource;
@@ skipping 292 matching lines @@
 }
 
 /**
  * Class that maintains a mapping from included/excluded paths to a set of
  * folders that should correspond to analysis contexts.
  */
 class ContextManagerImpl implements ContextManager {
   /**
    * Temporary flag to hide WIP .packages support (DEP 5).
    */
-  static bool ENABLE_PACKAGESPEC_SUPPORT =
-      serverOptions.isSet('ContextManagerImpl.ENABLE_PACKAGESPEC_SUPPORT');
+  static bool ENABLE_PACKAGESPEC_SUPPORT = serverOptions.isSet(
+      'ContextManagerImpl.ENABLE_PACKAGESPEC_SUPPORT', defaultValue: true);
 
   /**
    * The name of the `lib` directory.
    */
   static const String LIB_DIR_NAME = 'lib';
 
   /**
    * The name of `packages` folders.
    */
   static const String PACKAGES_NAME = 'packages';
@@ skipping 513 matching lines @@
       // Start by looking for .packages.
       packageSpec = folder.getChild(PACKAGE_SPEC_NAME);
     }
 
     // Fall back to looking for a pubspec.
     if (packageSpec == null || !packageSpec.exists) {
       packageSpec = folder.getChild(PUBSPEC_NAME);
     }
 
     bool createContext = packageSpec.exists || !withPackageSpecOnly;
-    if (withPackageSpecOnly && packageSpec.exists &&
-        (parent != null) && parent.ignored(packageSpec.path)) {
+    if (withPackageSpecOnly &&
+        packageSpec.exists &&
+        (parent != null) &&
+        parent.ignored(packageSpec.path)) {
       // Don't create a context if the package spec is required and ignored.
       createContext = false;
     }
     if (createContext) {
       parent = _createContext(parent, folder, packageSpec);
     }
 
     // Try to find subfolders with pubspecs or .packages files.
     try {
       for (Resource child in folder.getChildren()) {
@@ skipping 482 matching lines @@
 
   PackagesFileDisposition(this.packages) {}
 
   @override
   String get packageRoot => null;
 
   @override
   Iterable<UriResolver> createPackageUriResolvers(
       ResourceProvider resourceProvider) => const <UriResolver>[];
 }