* systty.h (HAVE_LTCHARS, HAVE_TCHARS): New macros; define them if
we have those structures, but *don't* define them if we have TERMIOS, whose functions take care of those parameters; that screws up AIX. (struct emacs_tty): Test those symbols, instead of the ioctl commands. * sysdep.c (emacs_get_tty, emacs_set_tty, new_ltchars, new_tchars, init_sys_modes): Same.
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