Message 217600 - Python tracker

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In-reply-to
Author	akira
Recipients	akira
Date	2014年04月30日.10:36:57
SpamBayes Score	-1.0
Marked as misclassified	Yes
Message-id	<1398854217.51.0.158914324658.issue21396@psf.upfronthosting.co.za>

Content
related: msg217596 (bufsize=1 is broken if subprocess module uses Python io) TextIOWrapper.write behavior: _pyio.py [1]: if self._line_buffering and (haslf or "\r" in s): self.flush() textio.c [2]: if (self->write_through) needflush = 1; else if (self->line_buffering && (haslf \|\| PyUnicode_FindChar(text, '\r', 0, PyUnicode_GET_LENGTH(text), 1) != -1)) needflush = 1; C implementation calls flush() if write_through=True, Python implementation doesn't. [1]: http://hg.python.org/cpython/file/0b2e199ad088/Lib/_pyio.py#l1636 [2]: http://hg.python.org/cpython/file/0b2e199ad088/Modules/_io/textio.c#l1333

Content

related: msg217596 (bufsize=1 is broken if subprocess module uses Python io)
TextIOWrapper.write behavior:
_pyio.py [1]:
 if self._line_buffering and (haslf or "\r" in s):
 self.flush()
textio.c [2]:
 if (self->write_through)
 needflush = 1;
 else if (self->line_buffering &&
 (haslf ||
 PyUnicode_FindChar(text, '\r', 0, PyUnicode_GET_LENGTH(text), 1) != -1))
 needflush = 1;
C implementation calls flush() if write_through=True, Python implementation doesn't.
[1]: http://hg.python.org/cpython/file/0b2e199ad088/Lib/_pyio.py#l1636
[2]: http://hg.python.org/cpython/file/0b2e199ad088/Modules/_io/textio.c#l1333

History
Date	User	Action	Args
2014年04月30日 10:36:57	akira	set	recipients: + akira
2014年04月30日 10:36:57	akira	set	messageid: <1398854217.51.0.158914324658.issue21396@psf.upfronthosting.co.za>
2014年04月30日 10:36:57	akira	link	issue21396 messages
2014年04月30日 10:36:57	akira	create

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