Detect console streams more reliably on Windows
commitd60eed7dafa64e8d5c2fd9309f94aa4fe2757af4
authorKarsten Blees <blees@dcon.de>
Sat, 31 Jul 2010 00:04:02 +0000 (31 00:04 +0000)
committerPat Thoyts <patthoyts@users.sourceforge.net>
Mon, 1 Oct 2012 13:34:28 +0000 (1 14:34 +0100)
treee36888af439cb9982f8b42e26693b6e159c09d76
parent44bf9ce4bacbd04145910c9c1c0dd8681fed8e2b
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