Hello jimpudar,

Thank you for your time and effort reading my question. I have wrote it on my question:

I could use potentially split the string character by character and store the output in an array. Where from there I would remove the even elements and reform the array into string with join. But in my case this is not possible as the system that I am writing the regex does not support the split function or join it only supports C format commands syntax, so I am using Perl as a test tool before implementation.

The environment that I want to apply the regex is written in C language and only follows C syntax solutions, but since Perl is also written in C language any solution in Perl works also for the system. So I am using Perl as test bed to find a more elegant solution than mine.

I hope now it is more clear. :)

BR / Thanos