Simplify termio code.

All non-MSDOS non-WINDOWSNT platforms define HAVE_TERMIOS, so
HAVE_TERMIO code is obsolete.
Replace HAVE_TERMIOS conditionals with !DOS_NT.
* src/systty.h: Do not define HAVE_TCATTR.
Remove HAVE_TERMIO, HAVE_LTCHARS and HAVE_TCHARS code.
Do not define EMACS_HAVE_TTY_PGRP.  Only define
EMACS_GET_TTY_PGRP for !DOS_NT.
* src/sysdep.c: Include sysselect.h unconditionally.  Do not include
sys/ioctl.h and termios.h, systty.h does it.  Use
HAVE_SYS_UTSNAME_H instead of USG as an include guard.
(init_baud_rate): Remove HAVE_TERMIO code.
(child_setup_tty): Remove HAVE_TERMIO code.
(emacs_get_tty, emacs_set_tty): Remove HAVE_TERMIO, HAVE_TCHARS
and HAVE_LTCHARS code.  Use !DOS_NT instead of HAVE_TCATTR.
(new_ltchars, new_tchars): Remove, unused.
(init_sys_modes): Remove HAVE_TERMIO, HAVE_TCHARS and HAVE_LTCHARS
code.  Remove special casing for __mips__, it was a no-op.  Remove
HAVE_TCATTR conditional, it is implied by HAVE_TERMIOS.
(init_sys_modes): Remove HPUX special case.
* src/process.c: Include stdlib.h unconditionally.  Do not include
fcntl.h, systty.h does it.  Remove conditional code for
HAVE_SERIAL, it is always true.
(process_send_signal): Remove HAVE_TERMIOS conditional, it's
always true when SIGNALS_VIA_CHARACTERS is true.
(Fcontinue_process, Fprocess_send_eof): Simplify conditionals:
!WINDOWSNT means HAVE_TERMIOS.
(create_process): Remove HAVE_TERMIOS, it's inside a HAVE_PTYS
conditional, which is true for all HAVE_TERMIOS systems.
* src/keyboard.c (init_keyboard): Do not use HAVE_TERMIO, use !DOS_NT
instead of HAVE_TERMIOS.
* src/emacs.c (shut_down_emacs): Use !defined DOS_NT instead of
EMACS_HAVE_TTY_PGRP.
* src/callproc.c (child_setup): Move EMACS_SET_TTY_PGRP use to the
non-MSDOS, non-WINDOWSNT code, it's only defined for such systems
anyway.

1 files changed, 39 insertions, 0 deletions

diff --git a/src/ChangeLog b/src/ChangeLog
index 403a588df4c..782c87642ce 100644
--- a/src/ChangeLog
+++ b/src/ChangeLog
@@ -1,3 +1,42 @@
+2010-08-22  Dan Nicolaescu  <dann@ics.uci.edu>
+
+        Simplify termio code.
+        All non-MSDOS non-WINDOWSNT platforms define HAVE_TERMIOS, so
+        HAVE_TERMIO code is obsolete.
+        Replace HAVE_TERMIOS conditionals with !DOS_NT.
+        * systty.h: Do not define HAVE_TCATTR.
+        Remove HAVE_TERMIO, HAVE_LTCHARS and HAVE_TCHARS code.
+        Do not define EMACS_HAVE_TTY_PGRP.  Only define
+        EMACS_GET_TTY_PGRP for !DOS_NT.
+        * sysdep.c: Include sysselect.h unconditionally.  Do not include
+        sys/ioctl.h and termios.h, systty.h does it.  Use
+        HAVE_SYS_UTSNAME_H instead of USG as an include guard.
+        (init_baud_rate): Remove HAVE_TERMIO code.
+        (child_setup_tty): Remove HAVE_TERMIO code.
+        (emacs_get_tty, emacs_set_tty): Remove HAVE_TERMIO, HAVE_TCHARS
+        and HAVE_LTCHARS code.  Use !DOS_NT instead of HAVE_TCATTR.
+        (new_ltchars, new_tchars): Remove, unused.
+        (init_sys_modes): Remove HAVE_TERMIO, HAVE_TCHARS and HAVE_LTCHARS
+        code.  Remove special casing for __mips__, it was a no-op.  Remove
+        HAVE_TCATTR conditional, it is implied by HAVE_TERMIOS.
+        (init_sys_modes): Remove HPUX special case.
+        * process.c: Include stdlib.h unconditionally.  Do not include
+        fcntl.h, systty.h does it.  Remove conditional code for
+        HAVE_SERIAL, it is always true.
+        (process_send_signal): Remove HAVE_TERMIOS conditional, it's
+        always true when SIGNALS_VIA_CHARACTERS is true.
+        (Fcontinue_process, Fprocess_send_eof): Simplify conditionals:
+        !WINDOWSNT means HAVE_TERMIOS.
+        (create_process): Remove HAVE_TERMIOS, it's inside a HAVE_PTYS
+        conditional, which is true for all HAVE_TERMIOS systems.
+        * keyboard.c (init_keyboard): Do not use HAVE_TERMIO, use !DOS_NT
+        instead of HAVE_TERMIOS.
+        * emacs.c (shut_down_emacs): Use !defined DOS_NT instead of
+        EMACS_HAVE_TTY_PGRP.
+        * callproc.c (child_setup): Move EMACS_SET_TTY_PGRP use to the
+        non-MSDOS, non-WINDOWSNT code, it's only defined for such systems
+        anyway.
+
 2010-08-21  Eli Zaretskii  <eliz@gnu.org>
 
         * dispnew.c (buffer_posn_from_coords): Fix off-by-one error in