factoids: look for duplicates case-insensitively
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@ -79,7 +79,7 @@ sub learn {
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my $entries = $db{$name};
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return &$respond("duplicate definition")
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if grep { $_ eq $definition } @$entries;
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if grep { lc $_ eq lc $definition } @$entries;
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push @$entries, $definition;
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&$respond("saved as #${\scalar @$entries}");
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