Make outdated output more "grepable"

- Minimal solution

lib/bundler/cli/outdated.rb

@@ -63,6 +63,13 @@ def run
           spec_version    = "#{active_spec.version}#{active_spec.git_version}"
           current_version = "#{current_spec.version}#{current_spec.git_version}"
           dependency_version = %|Gemfile specifies "#{dependency.requirement}"| if dependency && dependency.specific?
+
+          if options["verbose"] && dependency_version
+            fmt_groups = dependency.groups.join(", ")
+            pl = (dependency.groups.length > 1) ? "s" : ""
+            dependency_version << " in group#{pl} \"#{fmt_groups}\""
+          end
+
           Bundler.ui.info "  * #{active_spec.name} (#{spec_version} > #{current_version}) #{dependency_version}".rstrip
           out_count += 1
         end

spec/commands/outdated_spec.rb

@@ -31,6 +31,8 @@
       expect(out).to include("weakling (0.2 > 0.0.3) Gemfile specifies \"~> 0.0.1\"")
       expect(out).to include("foo (1.0")
 
+      puts out
+
       # Gem names are one per-line, between "*" and their parenthesized version.
       gem_list = out.split("\n").map { |g| g[ /\* (.*) \(/, 1] }.compact
       expect(gem_list).to eq(gem_list.sort)
@@ -54,6 +56,26 @@
     end
   end
 
+  describe "with --verbose option" do
+    it "adds gem group to dependency output when repo is updated" do
+
+      install_gemfile <<-G
+        source "file://#{gem_repo2}"
+
+        group :development, :test do
+          gem 'activesupport', '2.3.5'
+        end
+      G
+
+      update_repo2 { build_gem "activesupport", "3.0" }
+
+      bundle "outdated --verbose"
+
+      expect(out).to include("activesupport (3.0 > 2.3.5) Gemfile specifies \"= 2.3.5\" in groups \"development, test\"")
+
+    end
+  end
+
   describe "with --local option" do
     it "doesn't hit repo2" do
       FileUtils.rm_rf(gem_repo2)