Detect console streams more reliably on Windows
commit09a771abaca0acbe2e6d51185e51aefb57c953e9
authorKarsten Blees <blees@dcon.de>
Sat, 31 Jul 2010 00:04:02 +0000 (31 00:04 +0000)
committerJohannes Schindelin <johannes.schindelin@gmx.de>
Sat, 8 Oct 2011 19:47:15 +0000 (8 14:47 -0500)
tree34d3ac035770bd77702b4813a33eceeeb8003ab9
parent465a4701bf1965a8cd4fe5ddb5c8d765be078749
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