In my opinion, a lexically scoped $var is a very cheap thing and should be used if there is any doubt about some subsequent statement. I'm not advocating creating extra unnecessary vars, just ones that "add clarity".
I agree with you. I had posted this query because I thought about the expression behaving in a certain manner but it didn't. So it was pure curiosity. Thanks for that addition. I too wouldn't use such ambiguity in my work.
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