Detect console streams more reliably on Windows
commit432d94ff323b5ac82288d25c4cb5cbfc492606cb
authorKarsten Blees <blees@dcon.de>
Sat, 31 Jul 2010 00:04:02 +0000 (31 00:04 +0000)
committerPat Thoyts <patthoyts@users.sourceforge.net>
Mon, 20 Sep 2010 14:53:34 +0000 (20 15:53 +0100)
tree5d459e804affee4c3c2e6a22c6fd01994feeec39
parent928579782e73c0b38db9fae944606d5b19f894ed
Detect console streams more reliably on Windows

GetStdHandle(STD_OUTPUT_HANDLE) doesn't work for stderr if stdout is
redirected. Use _get_osfhandle of the FILE* instead.

_isatty() is true for all character devices (including parallel and serial
ports). Check return value of GetConsoleScreenBufferInfo instead to
reliably detect console handles (also don't initialize internal state from
an uninitialized CONSOLE_SCREEN_BUFFER_INFO structure if the function
fails).

Signed-off-by: Karsten Blees <blees@dcon.de>
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
compat/winansi.c