This is one of the idiosyncrasies of scoping that is rarely talked about.

while ( my $var = ... ) {
    # $var visible here
    }
continue {
    # $var also visible here
    }

if ( my $var = ... ) {
    # $var visible here
    }
elsif (  ) {
    # $var also visible here
    }
else {
    # $var also visible here
    }
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