Howard Hinnant 973bd393bc Respect and minimize tie/flush in from/to_stream ...

* Save/restore tie, setting it to nullptr during the operation
* On construction tie_->flush()
* For ostreams only, flush if unitbuf

2018-04-18 21:47:15 -04:00

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Respect and minimize tie/flush in from/to_stream

2018-04-18 21:47:15 -04:00