WORKS
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>	readf x;
1
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>	readf x,y;
1
2
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>	readf x,y;
1 2
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>	readf x; 1
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>	readf x,y;  2 4
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>	readf x
>>	; 1
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>	readf x,y
>>	; 1 2
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DOESN'T WORK
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>	readf x;
1 x;
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>	readf x,y;
1
2 x;		$ 'x;' is left waiting
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>	readf x,y;
1  2 x;		$ 'x;' is left waiting
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>	readf x; 1 x;
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>	readf x,y;  1   2  x;		$ 'x;' is left waiting
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>	readf x
>>	; 1 x;
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>	readf x,y
>>	; 1 2 x; y;
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