Dart SDK Spelling b, c, and d.

pkg/analyzer/lib/src/generated/utilities_general.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 analyzer.src.generated.utilities_general;
 
 import 'dart:collection';
 import 'dart:developer' show UserTag;
 
 export 'package:front_end/src/base/jenkins_smi_hash.dart' show JenkinsSmiHash;
 
 /**
  * Test if the given [value] is `false` or the string "false" (case-insensitive).
  */
 bool isFalse(Object value) =>
     value is bool ? !value : toLowerCase(value) == 'false';
 
 /**
  * Test if the given [value] is `true` or the string "true" (case-insensitive).
  */
 bool isTrue(Object value) =>
     value is bool ? value : toLowerCase(value) == 'true';
 
 /**
  * Safely convert the given [value] to a bool value, or return `null` if the
- * value coult not be converted.
+ * value could not be converted.
  */
 bool toBool(Object value) {
   if (value is bool) {
     return value;
   }
   String string = toLowerCase(value);
   if (string == 'true') {
     return true;
   }
   if (string == 'false') {
@@ skipping 148 matching lines @@
 
   dynamic/*=E*/ makeCurrentWhile/*<E>*/(dynamic/*=E*/ f()) {
     PerformanceTag prevTag = makeCurrent();
     try {
       return f();
     } finally {
       prevTag.makeCurrent();
     }
   }
 }