get option

Behaves similar to stream file but used with a timeout option.

Returns:
failure: 200 result=-1 endpos=0
failure on open: 200 result=0 endpos=0
success: 200 result=0 endpos=<offset>
digit pressed: 200 result=<digit> endpos=<offset>

<offset> is the stream position streaming stopped.
<digit> is the ascii code for the digit pressed.

Note that if you do not pass <timeout> there seems to be a default. Passing 0 however, works as expected (exactly like stream file).

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