Resolves Issue rubygems#50: relative paths don't work for --manifest …

…option

Thanks bahuvrihi.

lib/bundler/environment.rb

@@ -11,7 +11,7 @@ class Environment
     attr_writer :gem_path, :bindir
 
     def self.load(gemfile = nil)
-      gemfile = gemfile ? Pathname.new(gemfile) : default_manifest_file
+      gemfile = gemfile ? Pathname.new(gemfile).expand_path : default_manifest_file
 
       unless gemfile.file?
         raise ManifestFileNotFound, "#{filename.inspect} does not exist"

spec/bundler/cli_spec.rb

@@ -134,9 +134,12 @@
         gem "rake"
       Gemfile
 
-      Dir.chdir(bundled_app)
-      gem_command :bundle, "-m #{bundled_app('manifest.rb')}"
-      bundled_app("gems").should have_cached_gems("rake-0.8.7")
+      Dir.chdir(bundled_app) do
+        out = gem_command :bundle, "-m #{bundled_app('manifest.rb')}"
+        out.should include('Done.')
+        bundled_app("gems").should have_cached_gems("rake-0.8.7")
+        tmp_bindir('rake').should exist
+      end
     end
 
     it "works when the manifest is in a different directory" do
@@ -148,9 +151,25 @@
       Gemfile
 
       Dir.chdir(bundled_app)
-      gem_command :bundle, "-m #{bundled_app('config', 'manifest.rb')}"
+      out = gem_command :bundle, "-m #{bundled_app('config', 'manifest.rb')}"
+      out.should include('Done.')
       bundled_app("gems").should have_cached_gems("rake-0.8.7")
     end
+
+    it "works when using a relative path to the manifest file" do
+      build_manifest_file bundled_app('manifest_file'), <<-Gemfile
+        clear_sources
+        source "file://#{gem_repo1}"
+        gem "rake"
+      Gemfile
+
+      Dir.chdir(bundled_app) do
+        out = gem_command :bundle, "-m manifest_file"
+        out.should include('Done.')
+        tmp_gem_path.should have_cached_gems("rake-0.8.7")
+        tmp_bindir('rake').should exist
+      end
+    end
   end
 
   describe "it working without rubygems" do