in reply to
Re^2: brian's Guide to Solving Any Perl Problem
in thread brian's Guide to Solving Any Perl Problem
A most enlightening post, if I may say so, brian_d_foy.
I also used to use warn() until I realised that, when re-running Test::* based modules, it [the use of warn()] 'gets in the way' of true warnings - ever since when I, like you, define an additional sub to printf STDERR ... - thus the code behaves as I think it should whilst still generating debugging messages that don't cause test case failures.
A user level that continues to overstate my experience :-))