There is a named posix class [[:punct:]]for characters such as these which are none of \w, whitespace nor control characters. See perlrecharclass

Update:

my @puncts = /([[:punct:]]+)/g;

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In reply to Re: How to extract special charachetrs like <=, >= != from string by anonymized user 468275
in thread How to extract special charachetrs like <=, >= != from string by gjoshi

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