ALL regexes must match for the line to be printed. That's what && means.

More subtly, if the first (or any later) regex does not return a true value (i.e. it doesn't match) the later of the && conditions aren't even executed/tried, since by then, the total result will always be false.

This distinction is subtle but it can have quite profound effects if interpreted/understood (in)correctly. See also Short-circuit_evaluation

"What should it profit a man, if he should win a flame war, yet lose his cool?"

In reply to Re^2: Long Versions by Joost
in thread Long Versions by BoulderBum

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