I noticed that your sample $s is a non-matching one.

Did you take that on purpose to emphasise on cutting off backtracking in the failing case?

When I balance the (double)quotes in $s by adding one in last position (directly before the closing parentheses of q,) "straight" seems to have a slight edge over "cut" 

             Rate      cut straight
cut      110876/s       --     -13%
straight 127147/s      15%       --

[download]
I got similar figures as you for your original $s

In reply to Re^5: Help with Double Double Quotes regular expression (failing) by pKai
in thread Help with Double Double Quotes regular expression by mattford63

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