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I was referring to being wary when $line=<FH> is used on its own. To illustrate:
$ perl -e 'print "with_ending\nno_ending"' > a.txt $ perl -MData::Dumper open(FH, "<", "a.txt") or die $!; my $line1 = <FH>; my $line2 = <FH>; my $line3 = <FH>; close FH; $Data::Dumper::Useqq = 1; print Dumper [$line1, $line2, $line3]; __END__ $VAR1 = [ "with_ending\n", "no_end", undef ];

We see that there is a possibility that a line read ($line3 in this case) may return undef. That's what I meant: we need to be wary that a line read will not always return defined.

In reply to Re^4: File Reading and Closing confusion by repellent
in thread File Reading and Closing confusion by Anonymous Monk

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