Assuming nesting (e.g. (3,(4,5),6)) can't happen, 

my @recs = $recs =~ /
   \G
   \(
   ( (?: [^()"] | "[^"]*" )* )
   \)
   (?: , | \Z )
/xg;

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In reply to Re: split on the pattern of '),(' by ikegami
in thread split on the pattern of '),(' by spz1st

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