Message125534
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). |
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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 | |
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