Handle (missing) trailing slash in dartdoc

sdk/lib/_internal/compiler/compiler.dart

Index: sdk/lib/_internal/compiler/compiler.dart
diff --git a/sdk/lib/_internal/compiler/compiler.dart b/sdk/lib/_internal/compiler/compiler.dart
index 258a8b430d5cb9ee62a2154f00ebf33cd0808c04..3ac9aa5b154e7e5c326a09835aa6600be47eae28 100644
--- a/sdk/lib/_internal/compiler/compiler.dart
+++ b/sdk/lib/_internal/compiler/compiler.dart
@@ -43,6 +43,12 @@ Future<String> compile(Uri script,
                        ReadStringFromUri provider,
                        DiagnosticHandler handler,
                        [List<String> options = const []]) {
+  if (!libraryRoot.path.endsWith("/")) {
+    throw new ArgumentError("Library URI must end with a /");

[ahe, 2012/11/05 15:58:42]

Library URI -> libraryRoot

[Johnni Winther, 2012/11/05 16:23:29]

Done.

+  }
+  if (packageRoot != null && !packageRoot.path.endsWith("/")) {
+    throw new ArgumentError("Package URI must end with a /");

[ahe, 2012/11/05 15:58:42]

Package URI -> packageRoot

[Johnni Winther, 2012/11/05 16:23:29]

Done.

+  }
   // TODO(ahe): Consider completing the future with an exception if
   // code is null.
   Compiler compiler = new Compiler(provider, handler, libraryRoot, packageRoot,