Allow special characters to track

I will love to track my replies ( using the track @username ) but it seems that track do not allow special characters (like @) so replies is painful.

See my example, I'm Leech on Twitter, so if I track @Leech (it becomes to 'track Leech') and anytime someone says Leech on the public timeline I receive a notification.

Like me there's a lot of people in worst conditions ( @andy, @joan, @steve, etc ).

Could you please include special chars to tracks? or at least basic special chars like: @ and # (for hashtagging).
 
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