+int is_console__(int fd) {
+ DWORD st;
+ HANDLE h;
+ if (!_isatty(fd)) {
+ /* TTY must be a character device */
+ return 0;
+ }
+ h = (HANDLE)_get_osfhandle(fd);
+ if (h == INVALID_HANDLE_VALUE) {
+ /* Broken handle can't be terminal */
+ return 0;
+ }
+ if (!GetConsoleMode(h, &st)) {
+ /* GetConsoleMode appears to fail when it's not a TTY. In
+ particular, it's what most of our terminal functions
+ assume works, so if it doesn't work for all intents
+ and purposes we're not dealing with a terminal. */
+ return 0;
+ }
+ return 1;
+}
+
+