Capture the two strings to be swapped using a regex then put them back together in opposite order:

$origin =~ s/\( ([^ ,]+) \s*,\s* ([^ )]+) \) /($2 $1)/x;

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Note that the /x allows the spaces to be used to break up the expression for easier understanding.

DWIM is Perl's answer to Gödel

In reply to Re: Swapping two parts of a string by GrandFather
in thread Swapping two parts of a string by Harch84

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