Hi, I have a specific set of character ranges which I would like to preserve, and I would like to eliminate all other characters. Normally something like:

$_ =~ s/[^a-z]//g;
Would get rid of anything other than the lower case alphabet. However, this doesn't seem to be working right with my set of character ranges, and I don't know why... I tried the code below and a couple of other variations but I can't get the inversion to work. I can successfully delete all characters in the ranges, I just can't invert the set properly... and I can't explicitly set the ranges I want to delete. any help will be greatly appreciated!
my $shiftjis = q{
    [\x30-\x39]
    | [\x41-\x59]
    | [\x61-\x7A]
    | [\x82-\x83][\x3F-\xFE]
    | [\x88][\x9E-\xFE]
    | [\x89-\xE9][\x3F-\xFE]
    | [\xEA][\x3F-\x9F]
    };

while(<STDIN>){
  chomp();
  s/[^${shiftjis}]/ogx;
  print $_."\n";
}

[download]

Note: the above doesn't break, it just doesn't do what I'd hoped.

In reply to regex: how to negate a set of character ranges? by kettle

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