Not all '+' keys increment tokens
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ricardo_padilha
The plus '+' key of the alphanumeric keyboard does not
increase the number of tokens.
The only key available to increase the number of tokens
is the plus key in the numeric pad.
Both keys should be available to increase the number of
tokens because, for example, laptops do not have
numeric pads.
The same thing probably also happens with the minus '-'
key.
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user_id=137238
Changed the if clause to a more generic one. Now, any key
that generates* a '+' will increase the tokens and any key that
generates a '-' will decrease tokens.
*: Of course, according to Java interpretation of the keyboard
event...