Bug #2377 » sysread.diff
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* r, w = IO.pipe
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* r.eof? # blocks forever
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*
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* Note that <code>IO#eof?</code> reads data to a input buffer.
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* So <code>IO#sysread</code> doesn't work with <code>IO#eof?</code>.
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* Note that <code>IO#eof?</code> reads data to the input buffer.
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* So <code>IO#sysread</code> only works with <code>IO#eof?</code>
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* if you call <code>IO#rewind</code> first.
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*/
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VALUE
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