Detect console streams more reliably on Windows
commitd13ad3753d52c5d35df226c0d528549d5bfd21f3
authorKarsten Blees <blees@dcon.de>
Sat, 31 Jul 2010 00:04:02 +0000 (31 00:04 +0000)
committerJohannes Schindelin <johannes.schindelin@gmx.de>
Sun, 19 Dec 2010 22:17:04 +0000 (19 23:17 +0100)
treee884073b0de702b04f21b4838c12af63f4318981
parent5cbe2d5fad6b1bb5b399157f0f64f90897051968
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