Can you used a regex to identify the the characters which are double length ? Something like: print xlen("(\x{5fcd}\x{65e0}\x{53ef}\x{5fcd})"), "\n" ; ;
sub xlen {
my ($s) = @_ ;
my $l = length($s) ;
while ($s =~ m/[\x{5000}-\x{6FFF}]/g) { $l++ ; } ;
return $l ;
} ;
perhaps ?
Or: print ylen("(\x{5fcd}\x{65e0}\x{53ef}\x{5fcd})"), "\n" ; ;
sub ylen {
my ($s) = @_ ;
return length($s) + ($s =~ tr/[\x{5000}-\x{6FFF}]//) ;
} ;
which avoids running a while loop and may or may not be faster.
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