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Just some thoughts:
If you want to compare Perl with grep you need to compare the same behaviour. Your grep uses -z ("Treat the input as a set of lines, each terminated by a zero byte (the ASCII NUL character) instead of a newline."). So it breaks the "classical" definition of a line. I do not see something similar in your perl command. So it uses the "classical" line definition. At the same time, I think, your Regex in the perl command would not match a newline character with the '.', because it does not use the /s modifier. In reply to Re: Unable to match newline
by linuxer
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