We're encountered this issue when dealing with ETF tickers. We use Linux but a 3rd-party redistributor was on Windows; the reports we created had file names in

We're encountered this issue when dealing with ETF tickers. We use Linux but a 3rd-party redistributor was on Windows; the reports we created had file names in the form <TICKER>.pdf and, what would you know, PRN.pdf caused all sorts of trouble for them...