Hello Nick,
You may as well just write the output files anyway and save people the bother of working around it.
Vote ++;Or maybe have "-w+" for the old fail-fast way, "-w" for the new way and "-w-" for the "show them and ignore them" way.
I'd also not mind see an orthogonal way to suppress warnings in libraries; maybe only do warnings in packages not reached via include paths give via -I
-- <IXOYE><
