Detect console streams more reliably on Windows
commitc1537a2cb869dbaf21a9b082a2b45c2ae825acf1
authorKarsten Blees <blees@dcon.de>
Sat, 31 Jul 2010 00:04:02 +0000 (31 00:04 +0000)
committerJohannes Schindelin <johannes.schindelin@gmx.de>
Thu, 3 May 2012 15:32:48 +0000 (3 10:32 -0500)
tree77c71f5ac1aff521caffe3e46a7d5e66b89f0adf
parent74e04bf0ee3de923afd904f56c7836235c634918
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