Use STDIN_FILENO and STDOUT_FILENO instead of literal 0, 1.
========== From Karl Heuer =========
- * src/stty.c: Big patch from Karl Heuer. FIXME: fill in details
+ * src/stty.c [TERMIOS_NEEDS_XOPEN_SOURCE]: Define _XOPEN_SOURCE.
+ i386-pc-isc3.0, needs that in order to cause all of the useful
+ termios symbols to be defined, instead of just those that are
+ required by POSIX. This enables all of: iuclc ixany olcuc ocrnl
+ onlcr onocr onlret ofill ofdel nl0 cr0 tab0 bs0 vt0 ff0 xcase.
+
+ [GWINSZ_IN_SYS_PTY]: Include sys/ioctl.h, sys/tty.h, and sys/pty.h.
+
+ [!VSUSP && !VSWTCH]: Map VSWTCH and CSWTCH to VSUSP and CSUSP resp.
+ termio.h defines VSWTCH, but termios.h defines VSUSP instead (since
+ POSIX requires that symbol). Define VSWTCH as a synonym if needed,
+ so that either one can be used on input.
+ (display_changed): If the slot for swtch is the same as the one for
+ susp, display only the setting for susp.
+ (display_all): Likewise.
+
+ (display_changed): Some systems still have (VEOF,VEOL) == (VMIN,VTIME).
+ On such systems, it's confusing to print both pairs. So, skip eof and
+ eol when icanon is unset, and skip min and time when icanon is set.
+ (display_all): Likewise.
+
+ (set_window_size): Check only stdin (the device being queried) for
+ window size info. You don't want "stty </dev/foo" to report the size
+ of your current window when /dev/foo has no size info.
+ (display_window_size): Likewise.
+
+ (screen_columns): Check only stdout for window size info. You want
+ "stty </dev/foo" to wrap columns at the right margin of your current
+ window, not the /dev/foo width.
* acconfig.h (GWINSZ_IN_SYS_PTY): Add #undef.
(TERMIOS_NEEDS_XOPEN_SOURCE): Add #undef.