When I run Rcov using JRuby, the Rcov report always includes some libraries. JRuby 1.5.1 rcov 0.9.8 rspec 1.3.0 ci_reporter 1.6.2 Here is my Rake file. require ''rake'' require ''spec/rake/spectask'' require ''ci/reporter/rake/rspec'' task :default => :test ENV["CI_REPORTS"]="spec-reports" task :test => [ "ci:setup:rspec", :spec ] desc "Run all examples" Spec::Rake::SpecTask.new(:spec) do |t| t.spec_files = FileList[''spec/**/*_spec.rb''] t.spec_opts = [ "--diff" ] t.rcov = true t.rcov_opts = [ ''--exclude'', ''spec'' ] end I run command "jruby --debug -S rake" Then I will find "xxx-jruby-1_5_1-lib-ruby-1_8-time_rb.html" for class Time. If I run other Ruby interpreter, it won''t have this issue. Does somebody have the same issue? And how to fix it. Thanks. -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://rubyforge.org/pipermail/rspec-users/attachments/20100823/a34624ee/attachment.html>