What layer string should I pass to binmode in a context like this, where I don't (by definition) know what encoding the file I'm opening uses? Doing this:
open FH, $_ or die qq(can't open "$_" for reading\n);
binmode FH, ':raw';
my @lines = <FH>;
close FH;
has no effect on the program's behavior, and anything more specific than ":raw" would seem to entail a premature assumption about what encoding an unknown file uses.
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