Disable completion in comment text.

pkg/analysis_server/lib/src/services/completion/keyword_contributor.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 services.completion.contributor.dart.keyword;
 
 import 'dart:async';
 
 import 'package:analysis_server/plugin/protocol/protocol.dart';
 import 'package:analysis_server/src/services/completion/dart_completion_manager.dart';
 import 'package:analyzer/src/generated/ast.dart';
 import 'package:analyzer/src/generated/scanner.dart';
 
 const ASYNC = 'async';
 const AWAIT = 'await';
 
 /**
  * A contributor for calculating `completion.getSuggestions` request results
  * for the local library in which the completion is requested.
  */
 class KeywordContributor extends DartCompletionContributor {
   @override
   bool computeFast(DartCompletionRequest request) {
-    request.target.containingNode.accept(new _KeywordVisitor(request));
+    if (!request.target.isCommentText) {
+      request.target.containingNode.accept(new _KeywordVisitor(request));
+    }
     return true;
   }
 
   @override
   Future<bool> computeFull(DartCompletionRequest request) {
     return new Future.value(false);
   }
 }
 
 /**
- * A vistor for generating keyword suggestions.
+ * A visitor for generating keyword suggestions.
  */
 class _KeywordVisitor extends GeneralizingAstVisitor {
   final DartCompletionRequest request;
   final Object entity;
 
   _KeywordVisitor(DartCompletionRequest request)
       : this.request = request,
         this.entity = request.target.entity;
 
   @override
@@ skipping 122 matching lines @@
           Keyword.TRUE
         ]);
       } else {
         _addSuggestion(Keyword.IN, DART_RELEVANCE_HIGH);
       }
     }
   }
 
   @override
   visitFormalParameterList(FormalParameterList node) {
-    AstNode constructorDecl =
+    AstNode constructorDeclaration =
         node.getAncestor((p) => p is ConstructorDeclaration);
-    if (constructorDecl != null) {
+    if (constructorDeclaration != null) {
       _addSuggestions([Keyword.THIS]);
     }
   }
 
   @override
   visitForStatement(ForStatement node) {
     if (entity == node.rightSeparator && entity.toString() != ';') {
       // Handle the degenerate case while typing - for (int x i^)
       _addSuggestion(Keyword.IN, DART_RELEVANCE_HIGH);
     }
@@ skipping 318 matching lines @@
 
   bool _inLoop(AstNode node) =>
       _inDoLoop(node) || _inForLoop(node) || _inWhileLoop(node);
 
   bool _inSwitch(AstNode node) =>
       node.getAncestor((p) => p is SwitchStatement) != null;
 
   bool _inWhileLoop(AstNode node) =>
       node.getAncestor((p) => p is WhileStatement) != null;
 }