if ($i>1) {
   $a = function_that_may_fail();
   $i = ($a) ? $i+1 : 1;
}
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I find that the only time I really use "and" and "or" are with carp/croak/warn/die. But that's just me.

At worst:

do { $a=function_that_may_fail(); $i= $a ? $i+1 : 1; } if ($i>1)
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