http://www.perlmonks.org?node_id=377034


in reply to Re^3: imposing "strict" on an included file
in thread imposing "strict" on an included file

Two reasons off the top of my head: it would require all the files to be touched (and touching a file is, itself a risk); but, more importantly, it would only work for existing files. One possibility to avoid that issue would be to grep the files at the start of the test and die if "use strict" isn't found. But a simple way to say "do_strict $filename" would be more elegant.