For me, it always matches one character; it never matches a nontrivial palindrome. 
use Regexp::Common;
$_ = 'abcdegedfc';
while (/($RE{lingua}{palindrome})/g) {
  print "Got $1\n";
}
__END__
Got a
Got b
Got c
Got d
Got e
Got g
Got e
Got d
Got f
Got c

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In reply to Re^2: Try this in Regexp palindrome by Roy Johnson
in thread Try this in Regexp palindrome by Anonymous Monk

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