implement open_wmemstream
authorRich Felker <dalias@aerifal.cx>
Sat, 3 Sep 2011 23:49:46 +0000 (19:49 -0400)
committerRich Felker <dalias@aerifal.cx>
Sat, 3 Sep 2011 23:49:46 +0000 (19:49 -0400)
not heavily tested, but it seems to be correct, including the odd
behavior that seeking is in terms of wide character count. this
precludes any simple buffering, so we just make the stream unbuffered.


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