Re^2: A way to avoid repeated conditional loops

I wonder whether the copying of some code #2 is worth the avoidance of the test. Another way of writing it, with the same duplication:

while (<FILE>) {
    if (/alpha/) {
        some code #1;
        while (<FILE>) {
            some code #2;
        }
    }
    else {
        some code #2;
    }
}
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