Analyze package:testing.

pkg/testing/lib/src/analyze.dart

 // Copyright (c) 2016, 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.md file.
 
 library testing.analyze;
 
 import 'dart:async' show Stream, Future;
 
 import 'dart:convert' show LineSplitter, UTF8;
 
@@ skipping 140 matching lines @@
 Future<Null> analyzeUris(
     Uri analysisOptions,
     Uri packages,
     List<Uri> uris,
     List<RegExp> exclude,
     List<String> gitGrepPathspecs,
     List<String> gitGrepPatterns) async {
   if (uris.isEmpty) return;
   String topLevel;
   try {
-    topLevel = Uri
-        .directory(await git("rev-parse", <String>["--show-toplevel"]))
-        .toFilePath();
+    topLevel = new Uri.directory(
+            await git("rev-parse", <String>["--show-toplevel"]).trimRight())
+        .toFilePath(windows: false);
   } catch (e) {
     topLevel = Uri.base.toFilePath(windows: false);
   }
 
   String toFilePath(Uri uri) {
     String path = uri.toFilePath(windows: false);
     return path.startsWith(topLevel) ? path.substring(topLevel.length) : path;
   }
 
   Set<String> filesToAnalyze = new Set<String>();
@@ skipping 98 matching lines @@
   ProcessResult result = await Process.run(
       Platform.isWindows ? "git.bat" : "git",
       <String>[command]..addAll(arguments),
       workingDirectory: workingDirectory);
   if (result.exitCode != 0) {
     throw "Non-zero exit code from git $command (${result.exitCode})\n"
         "${result.stdout}\n${result.stderr}";
   }
   return result.stdout;
 }