Let me ask the question: what do you want?
next, if 1 .. 3; will only call next when the left condition is true until the right condition is true.
Written differently:
while (<>) {
next, if 2 .. 5;
print;
}
Is sort of the same as:
my $index = 0;
my $skip = 0;
while (<>) {
$index++;
if ($skip or $index == 2) {
if ($index == 5) {
$skip = 0;
}
next;
}
print;
}
If your code is looping over a sequence of numbers or if you are using another counter then you might be able to use:
next if $_ == 2 .. $_ == 5;
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