Message 125534 - Python tracker

Message125534

Author	pitrou
Recipients	amaury.forgeotdarc, brian.curtin, gvanrossum, pitrou, v+python
Date	2011-01-06.09:29:53
SpamBayes Score	0.0008500052
Marked as misclassified	No
Message-id	<1294306197.6.0.655065835397.issue10841@psf.upfronthosting.co.za>
In-reply-to

Content
Ok, actually it boils down to the following code in Modules/main.c: if (Py_UnbufferedStdioFlag) { #if defined(MS_WINDOWS) \|\| defined(__CYGWIN__) _setmode(fileno(stdin), O_BINARY); _setmode(fileno(stdout), O_BINARY); #endif ... which explains things quite clearly! Archeology leads to r7409 by Guido in 1997: changeset: 4916:5af9f8a98d93 branch: trunk user: guido date: Sat Jan 11 20:28:55 1997 +0100 files: Modules/main.c description: [svn r7409] On Windows, -u implies binary mode for stdin/stdout (as well as unbuffered stdout/stderr).

Content

Ok, actually it boils down to the following code in Modules/main.c:

    if (Py_UnbufferedStdioFlag) {
#if defined(MS_WINDOWS) || defined(__CYGWIN__)
        _setmode(fileno(stdin), O_BINARY);
        _setmode(fileno(stdout), O_BINARY);
#endif

... which explains things quite clearly! Archeology leads to r7409 by Guido in 1997:

changeset:   4916:5af9f8a98d93
branch:      trunk
user:        guido
date:        Sat Jan 11 20:28:55 1997 +0100
files:       Modules/main.c
description:
[svn r7409] On Windows, -u implies binary mode for stdin/stdout
(as well as unbuffered stdout/stderr).

History
Date	User	Action	Args
2011-01-06 09:29:57	pitrou	set	recipients: + pitrou, gvanrossum, amaury.forgeotdarc, v+python, brian.curtin
2011-01-06 09:29:57	pitrou	set	messageid: <1294306197.6.0.655065835397.issue10841@psf.upfronthosting.co.za>
2011-01-06 09:29:53	pitrou	link	issue10841 messages
2011-01-06 09:29:53	pitrou	create