Add an ArgResults.original getter.

pkg/args/lib/src/arg_results.dart

Index: pkg/args/lib/src/arg_results.dart
diff --git a/pkg/args/lib/src/arg_results.dart b/pkg/args/lib/src/arg_results.dart
index 2e47a8e907b724f41982b7177976d8d7dd6fda54..55504915872052ac9c00bbea8ceeea4ff2aadb87 100644
--- a/pkg/args/lib/src/arg_results.dart
+++ b/pkg/args/lib/src/arg_results.dart
@@ -13,8 +13,9 @@ import 'arg_parser.dart';
 /// Since [ArgResults] doesn't have a public constructor, this lets [Parser]
 /// get to it. This function isn't exported to the public API of the package.
 ArgResults newArgResults(ArgParser parser, Map<String, dynamic> parsed,
-      String name, ArgResults command, List<String> rest) {
-  return new ArgResults._(parser, parsed, name, command, rest);
+      String name, ArgResults command, List<String> rest,
+      List<String> original) {
+  return new ArgResults._(parser, parsed, name, command, rest, original);
 }
 
 /// The results of parsing a series of command line arguments using
@@ -46,10 +47,14 @@ class ArgResults {
   /// `--` was reached.
   final List<String> rest;
 
+  /// The original list of arguments that were parsed.
+  final List<String> original;

[Bob Nystrom, 2014/12/11 01:13:23]

What do you think of "arguments" or "allArguments"? "original" just as a bare
adjective feels a bit vague to me.

[nweiz, 2014/12/11 01:17:18]

Done.

+
   /// Creates a new [ArgResults].
   ArgResults._(this._parser, this._parsed, this.name, this.command,
-      List<String> rest)
-      : this.rest = new UnmodifiableListView(rest);
+      List<String> rest, List<String> original)
+      : this.rest = new UnmodifiableListView(rest),
+        this.original = new UnmodifiableListView(original);
 
   /// Gets the parsed command-line option named [name].
   operator [](String name) {