Graff, you're an awesome guy!! The final version of the script working exactly in the manner I want except a little problem.
I will elaborate it.

I have this file to scan: example.txt (used by scammers/abusers)
http://uploading.com/files/get/cm3364a5/
This pattern
page.{0,10}html.*?page.{0,10}html.*?</changefreq
working because example.txt contain all elements of pattern.

If I change pattern to
page.{0,10}html.*?page.{0,10}html.*?kkk
(example.txt doesn't containt kkk), script enters a loop and CPU usage become very high.
I think it's related to excesive number of the same pattern, because reducing example.txt to only few lines solves the problem.
Any idea how to solve this bug?

In reply to Re^3: Comparing pattern by mrc
in thread Comparing pattern by mrc

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