Hi, Due to the change in Boost.Test parameter handling I needed update Boost.Test Jamfile, since I was passing baseline pattern file names as arguments to the test module. Here is snippet from my Jamfile: return [ $(test-rule) $(source_files) ../build//$(usage-variant) $(extra-libs) : -- <============= Note: I added '--' : $(pattern_file) ... Unfortunately -- disappears for some reason from command line. I found that the following works: return [ $(test-rule) $(source_files) ../build//$(usage-variant) $(extra-libs) : -- "" <============= Note "" : $(pattern_file) ... Can we fix it so that "" is not required? Is there a different workaround? Gennadiy