my %letters;
$letters{$_}++ for grep /\w/, split //, $input;

That would be simpler as:

my %letters;
$letters{$_}++ for $input =~ /\w/g;

In reply to Re^6: Golf: Improve this guy's fail . . . please! by jwkrahn
in thread Golf: Improve this guy's fail . . . please! by dragonchild

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