Add support for listing to the glob package.

pkg/glob/lib/src/utils.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 glob.utils;
 
+import 'package:path/path.dart' as p;
+
 /// A range from [min] to [max], inclusive.
 class Range {
   /// The minimum value included by the range.
   final int min;
 
   /// The maximum value included by the range.
   final int max;
 
   /// Whether this range covers only a single number.
   bool get isSingleton => min == max;
 
   Range(this.min, this.max);
 
   /// Returns a range that covers only [value].
   Range.singleton(int value)
       : this(value, value);
 
   /// Whether [this] contains [value].
   bool contains(int value) => value >= min && value <= max;
+
+  bool operator==(Object other) => other is Range &&
+      other.min == min && other.max == max;
+
+  int get hashCode => 3 * min + 7 * max;
 }
 
 /// An implementation of [Match] constructed by [Glob]s.
 class GlobMatch implements Match {
   final String input;
   final Pattern pattern;
   final int start = 0;
 
   int get end => input.length;
   int get groupCount => 0;
@@ skipping 10 matching lines @@
   List<String> groups(List<int> groupIndices) =>
       groupIndices.map((index) => group(index)).toList();
 }
 
 final _quote = new RegExp(r"[+*?{}|[\]\\().^$-]");
 
 /// Returns [contents] with characters that are meaningful in regular
 /// expressions backslash-escaped.
 String regExpQuote(String contents) =>
     contents.replaceAllMapped(_quote, (char) => "\\${char[0]}");
+
+/// Returns [path] with all its separators replaced with forward slashes.
+///
+/// This is useful when converting from Windows paths to globs.
+String separatorToForwardSlash(String path) {
+  if (p.context != p.Style.windows) return path;
+  return path.replaceAll('\\', '/');
+}