I can't follow, since you are using the /g modifier, each iteration will only capture 2 groups and then continue where it left of

/g in list context consumes till the end of string; iterating with "while" is infinite loop (all but two captures are thrown away each time), or did I misunderstood completely? OK, nevermind

In reply to Re^6: Why is "any" slow in this case? by Anonymous Monk
in thread Why is "any" slow in this case? by Anonymous Monk

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