Actually you'd need

local @ARGV = @_;
require ARGV::readonly;
ARGV::readonly->import; ## THIS!!!
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But if you're going to write all that, which might confuse some, you might as well just steal ARGV::readonly verbatim

local @ARGV = @_;
# Tom Christiansen in Message-ID: <24692.1217339882@chthon>
# reccomends essentially the following:
for (@ARGV){
   s/^(\s+)/.\/$1/;    # leading whitespace preserved
   s/^/< /;        # force open for input
   $_.=qq/\0/;    # trailing whitespace preserved & pipes forbidden
};
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