For example: /^(.{5})+(?<!ab*c)d/ ... can't be rewritten using the (*SKIP)(*FAIL) pattern ...

I don't see how it could be done, but I'm still looking. Certainly the trick has its limits. Still, it's handy in a few situations. However, variable width negative look-behind is, perhaps fortunately, not something one tends to really need very often. :)

Give a man a fish:  <%-{-{-{-<

In reply to Re^4: Where can I find more examples of use of Special Backtracking Control Verbs? by AnomalousMonk
in thread Where can I find more examples of use of Special Backtracking Control Verbs? by rsFalse

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