diff --git a/cmd-new-session.c b/cmd-new-session.c
index 148404ed..08b2029d 100644
--- a/cmd-new-session.c
+++ b/cmd-new-session.c
@@ -1,4 +1,4 @@
-/* $Id: cmd-new-session.c,v 1.65 2009-09-15 23:52:30 tcunha Exp $ */
+/* $Id: cmd-new-session.c,v 1.66 2009-09-16 12:36:27 nicm Exp $ */
 
 /*
  * Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
@@ -24,18 +24,6 @@
 
 #include "tmux.h"
 
-#ifdef HAVE_TTYDEFAULTS_H
-#ifdef HAVE_TTYDEFCHARS
-#define TTYDEFCHARS
-#endif
-#include <sys/ttydefaults.h>
-#else
-#ifndef OXTABS
-#define OXTABS 0
-#endif
-#include "compat/ttydefaults.h"
-#endif
-
 /*
  * Create a new session and attach to the current terminal unless -d is given.
  */
@@ -126,7 +114,7 @@ cmd_new_session_exec(struct cmd *self, struct cmd_ctx *ctx)
 	struct session			*s;
 	struct window			*w;
 	struct environ			 env;
-	struct termios			 tio;
+	struct termios			 tio, *tiop;
 	const char			*update;
 	char				*overrides, *cmd, *cwd, *cause;
 	int				 detached, idx;
@@ -161,8 +149,8 @@ cmd_new_session_exec(struct cmd *self, struct cmd_ctx *ctx)
 		detached = 1;
 
 	/*
-	 * Fill in the termios settings used for new windows in this session;
-	 * if there is a command client, use the control characters from it.
+	 * Save the termios settings, part of which is used for new windows in
+	 * this session.
 	 *
 	 * This is read again with tcgetattr() rather than using tty.tio as if
 	 * detached, tty_open won't be called. Because of this, it must be done
@@ -172,32 +160,9 @@ cmd_new_session_exec(struct cmd *self, struct cmd_ctx *ctx)
 	if (ctx->cmdclient != NULL && ctx->cmdclient->tty.fd != -1) {
 		if (tcgetattr(ctx->cmdclient->tty.fd, &tio) != 0)
 			fatal("tcgetattr failed");
-	} else {
-#ifdef HAVE_TTYDEFCHARS
-		memcpy(tio.c_cc, ttydefchars, sizeof tio.c_cc);
-#else
-		memset(tio.c_cc, _POSIX_VDISABLE, sizeof tio.c_cc);
-		tio.c_cc[VINTR] = CINTR;
-		tio.c_cc[VQUIT] = CQUIT;
-		tio.c_cc[VKILL] = CKILL;
-		tio.c_cc[VEOF] = CEOF;
-		tio.c_cc[VSTART] = CSTART;
-		tio.c_cc[VSTOP] = CSTOP;
-		tio.c_cc[VSUSP] = CSUSP;
-		tio.c_cc[VEOL] = CEOL;
-		tio.c_cc[VREPRINT] = CREPRINT;
-		tio.c_cc[VDISCARD] = CDISCARD;
-		tio.c_cc[VWERASE] = CWERASE;
-		tio.c_cc[VLNEXT] = CLNEXT;
-#endif
-	}
-	tio.c_cc[VERASE] = '\177';
-	tio.c_iflag = TTYDEF_IFLAG;
-	tio.c_oflag = TTYDEF_OFLAG;
-	tio.c_lflag = TTYDEF_LFLAG;
-	tio.c_cflag = TTYDEF_CFLAG;
-	cfsetispeed(&tio, TTYDEF_SPEED);
-	cfsetospeed(&tio, TTYDEF_SPEED);
+		tiop = &tio;
+	} else
+		tiop = NULL;
 
 	/* Open the terminal if necessary. */
 	if (!detached && ctx->cmdclient != NULL) {
@@ -254,7 +219,7 @@ cmd_new_session_exec(struct cmd *self, struct cmd_ctx *ctx)
 	/* Create the new session. */
 	idx = -1 - options_get_number(&global_s_options, "base-index");
 	s = session_create(
-	    data->newname, cmd, cwd, &env, &tio, idx, sx, sy, &cause);
+	    data->newname, cmd, cwd, &env, tiop, idx, sx, sy, &cause);
 	if (s == NULL) {
 		ctx->error(ctx, "create session failed: %s", cause);
 		xfree(cause);
diff --git a/cmd-respawn-window.c b/cmd-respawn-window.c
index 114fdfd1..abf030f6 100644
--- a/cmd-respawn-window.c
+++ b/cmd-respawn-window.c
@@ -1,4 +1,4 @@
-/* $Id: cmd-respawn-window.c,v 1.21 2009-09-02 01:02:44 tcunha Exp $ */
+/* $Id: cmd-respawn-window.c,v 1.22 2009-09-16 12:36:27 nicm Exp $ */
 
 /*
  * Copyright (c) 2008 Nicholas Marriott <nicm@users.sourceforge.net>
@@ -76,7 +76,7 @@ cmd_respawn_window_exec(struct cmd *self, struct cmd_ctx *ctx)
 	TAILQ_INSERT_HEAD(&w->panes, wp, entry);
 	window_pane_resize(wp, w->sx, w->sy);
 	if (window_pane_spawn(
-	    wp, data->arg, NULL, NULL, &env, &s->tio, &cause) != 0) {
+	    wp, data->arg, NULL, NULL, &env, s->tio, &cause) != 0) {
 		ctx->error(ctx, "respawn window failed: %s", cause);
 		xfree(cause);
 		environ_free(&env);
diff --git a/cmd-split-window.c b/cmd-split-window.c
index b5a8e9ae..79594631 100644
--- a/cmd-split-window.c
+++ b/cmd-split-window.c
@@ -1,4 +1,4 @@
-/* $Id: cmd-split-window.c,v 1.26 2009-09-02 01:05:55 tcunha Exp $ */
+/* $Id: cmd-split-window.c,v 1.27 2009-09-16 12:36:27 nicm Exp $ */
 
 /*
  * Copyright (c) 2009 Nicholas Marriott <nicm@users.sourceforge.net>
@@ -189,7 +189,7 @@ cmd_split_window_exec(struct cmd *self, struct cmd_ctx *ctx)
 		shell = _PATH_BSHELL;
 
 	wp = window_add_pane(w, hlimit);
-	if (window_pane_spawn(wp, cmd, shell, cwd, &env, &s->tio, &cause) != 0)
+	if (window_pane_spawn(wp, cmd, shell, cwd, &env, s->tio, &cause) != 0)
 		goto error;
 	if (layout_split_pane(w->active, type, size, wp) != 0) {
 		cause = xstrdup("pane too small");
diff --git a/compat/ttydefaults.h b/compat/ttydefaults.h
deleted file mode 100644
index 1bb942d2..00000000
--- a/compat/ttydefaults.h
+++ /dev/null
@@ -1,139 +0,0 @@
-/* $Id: ttydefaults.h,v 1.3 2009-08-20 12:38:37 nicm Exp $ */
-/*	$OpenBSD: ttydefaults.h,v 1.6 2003/06/02 23:28:22 millert Exp $	*/
-/*	$NetBSD: ttydefaults.h,v 1.8 1996/04/09 20:55:45 cgd Exp $	*/
-
-/*-
- * Copyright (c) 1982, 1986, 1993
- *	The Regents of the University of California.  All rights reserved.
- * (c) UNIX System Laboratories, Inc.
- * All or some portions of this file are derived from material licensed
- * to the University of California by American Telephone and Telegraph
- * Co. or Unix System Laboratories, Inc. and are reproduced herein with
- * the permission of UNIX System Laboratories, Inc.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 3. Neither the name of the University nor the names of its contributors
- *    may be used to endorse or promote products derived from this software
- *    without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- *	@(#)ttydefaults.h	8.4 (Berkeley) 1/21/94
- */
-
-/*
- * System wide defaults for terminal state.
- */
-#ifndef _SYS_TTYDEFAULTS_H_
-#define	_SYS_TTYDEFAULTS_H_
-
-/*
- * Defaults on "first" open.
- */
-#define	TTYDEF_IFLAG	(BRKINT | ICRNL | IMAXBEL | IXON | IXANY)
-#define TTYDEF_OFLAG	(OPOST | ONLCR | OXTABS)
-#define TTYDEF_LFLAG	(ECHO | ICANON | ISIG | IEXTEN | ECHOE|ECHOKE|ECHOCTL)
-#define TTYDEF_CFLAG	(CREAD | CS8 | HUPCL)
-#define TTYDEF_SPEED	(B9600)
-
-/*
- * Control Character Defaults
- */
-#undef CTRL
-#define CTRL(x)	(x&037)
-#ifndef CEOF
-#define	CEOF		CTRL('d')
-#endif
-#ifndef CEOL
-#define	CEOL		((unsigned char)'\377')	/* XXX avoid _POSIX_VDISABLE */
-#endif
-#ifndef CERASE
-#define	CERASE		0177
-#endif
-#ifndef CINTR
-#define	CINTR		CTRL('c')
-#endif
-#ifndef CSTATUS
-#define	CSTATUS		((unsigned char)'\377')	/* XXX avoid _POSIX_VDISABLE */
-#endif
-#ifndef CKILL
-#define	CKILL		CTRL('u')
-#endif
-#ifndef CMIN
-#define	CMIN		1
-#endif
-#ifndef CQUIT
-#define	CQUIT		034		/* FS, ^\ */
-#endif
-#ifndef CSUSP
-#define	CSUSP		CTRL('z')
-#endif
-#ifndef CTIME
-#define	CTIME		0
-#endif
-#ifndef CDSUSP
-#define	CDSUSP		CTRL('y')
-#endif
-#ifndef CSTART
-#define	CSTART		CTRL('q')
-#endif
-#ifndef CSTOP
-#define	CSTOP		CTRL('s')
-#endif
-#ifndef CLNEXT
-#define	CLNEXT		CTRL('v')
-#endif
-#ifndef CDISCARD
-#define	CDISCARD 	CTRL('o')
-#endif
-#ifndef CWERASE
-#define	CWERASE 	CTRL('w')
-#endif
-#ifndef CREPRINT
-#define	CREPRINT 	CTRL('r')
-#endif
-#ifndef CEOT
-#define	CEOT		CEOF
-#endif
-/* compat */
-#ifndef CBRK
-#define	CBRK		CEOL
-#endif
-#ifndef CRPRNT
-#define CRPRNT		CREPRINT
-#endif
-#ifndef CFLUSH
-#define	CFLUSH		CDISCARD
-#endif
-
-/* PROTECTED INCLUSION ENDS HERE */
-#endif /* !_SYS_TTYDEFAULTS_H_ */
-
-/*
- * #define TTYDEFCHARS to include an array of default control characters.
- */
-#ifdef TTYDEFCHARS
-cc_t	ttydefchars[NCCS] = {
-	CEOF,	CEOL,	CEOL,	CERASE, CWERASE, CKILL, CREPRINT,
-	_POSIX_VDISABLE, CINTR,	CQUIT,	CSUSP,	CDSUSP,	CSTART,	CSTOP,	CLNEXT,
-	CDISCARD, CMIN,	CTIME,  CSTATUS, _POSIX_VDISABLE
-};
-#undef TTYDEFCHARS
-#endif
diff --git a/configure b/configure
index fc7afa0b..cd644158 100755
--- a/configure
+++ b/configure
@@ -1,5 +1,5 @@
 #!/bin/sh
-# $Id: configure,v 1.36 2009-09-04 14:48:25 nicm Exp $
+# $Id: configure,v 1.37 2009-09-16 12:36:27 nicm Exp $
 
 TMUX_PLATFORM=${TMUX_PLATFORM:-`uname -s`}
 
@@ -35,8 +35,6 @@ cat <<EOF >>$CONFIG_H
 #undef HAVE_STRSEP
 #undef HAVE_STRTONUM
 #undef HAVE_TREE_H
-#undef HAVE_TTYDEFAULTS_H
-#undef HAVE_TTYDEFCHARS
 #undef HAVE_UTIL_H
 #undef HAVE_U_INT
 #undef HAVE_VIS
@@ -65,8 +63,6 @@ case $TMUX_PLATFORM in
 #define HAVE_STRSEP
 #define HAVE_STRTONUM
 #define HAVE_TREE_H
-#define HAVE_TTYDEFAULTS_H
-#define HAVE_TTYDEFCHARS
 #define HAVE_UTIL_H
 #define HAVE_U_INT
 #define HAVE_VIS
@@ -91,7 +87,6 @@ EOF
 #define HAVE_PTY_H
 #define HAVE_STRCASESTR
 #define HAVE_STRSEP
-#define HAVE_TTYDEFAULTS_H
 #define HAVE_U_INT
 EOF
 	cat <<EOF >>$CONFIG_MK
@@ -183,8 +178,6 @@ EOF
 #define HAVE_STRLCAT
 #define HAVE_STRLCPY
 #define HAVE_STRSEP
-#define HAVE_TTYDEFAULTS_H
-#define HAVE_TTYDEFCHARS
 #define HAVE_UTIL_H
 #define HAVE_U_INT
 EOF
@@ -219,8 +212,6 @@ EOF
 #define HAVE_STRLCPY
 #define HAVE_STRTONUM
 #define HAVE_STRSEP
-#define HAVE_TTYDEFAULTS_H
-#define HAVE_TTYDEFCHARS
 #define HAVE_U_INT
 EOF
 	cat <<EOF >>$CONFIG_MK
@@ -250,8 +241,6 @@ EOF
 #define HAVE_STRLCAT
 #define HAVE_STRLCPY
 #define HAVE_STRSEP
-#define HAVE_TTYDEFAULTS_H
-#define HAVE_TTYDEFCHARS
 #define HAVE_UTIL_H
 #define HAVE_U_INT
 EOF
diff --git a/session.c b/session.c
index e729c69d..0282e545 100644
--- a/session.c
+++ b/session.c
@@ -1,4 +1,4 @@
-/* $Id: session.c,v 1.65 2009-09-07 23:59:19 tcunha Exp $ */
+/* $Id: session.c,v 1.66 2009-09-16 12:36:27 nicm Exp $ */
 
 /*
  * Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
@@ -138,7 +138,12 @@ session_create(const char *name, const char *cmd, const char *cwd,
 	environ_init(&s->environ);
 	if (env != NULL)
 		environ_copy(env, &s->environ);
-	memcpy(&s->tio, tio, sizeof s->tio);
+
+	s->tio = NULL;
+	if (tio != NULL) {
+		s->tio = xmalloc(sizeof *s->tio);
+		memcpy(s->tio, tio, sizeof *s->tio);
+	}
 
 	s->sx = sx;
 	s->sy = sy;
@@ -181,6 +186,9 @@ session_destroy(struct session *s)
 	while (!ARRAY_EMPTY(&sessions) && ARRAY_LAST(&sessions) == NULL)
 		ARRAY_TRUNC(&sessions, 1);
 
+	if (s->tio != NULL)
+		xfree(s->tio);
+
 	session_alert_cancel(s, NULL);
 	environ_free(&s->environ);
 	options_free(&s->options);
@@ -236,7 +244,7 @@ session_new(struct session *s,
 
 	hlimit = options_get_number(&s->options, "history-limit");
 	w = window_create(
-	    name, cmd, shell, cwd, &env, &s->tio, s->sx, s->sy, hlimit, cause);
+	    name, cmd, shell, cwd, &env, s->tio, s->sx, s->sy, hlimit, cause);
 	if (w == NULL) {
 		environ_free(&env);
 		return (NULL);
diff --git a/tmux.h b/tmux.h
index 5d909054..cb9938bf 100644
--- a/tmux.h
+++ b/tmux.h
@@ -1,4 +1,4 @@
-/* $Id: tmux.h,v 1.442 2009-09-15 23:50:32 tcunha Exp $ */
+/* $Id: tmux.h,v 1.443 2009-09-16 12:36:27 nicm Exp $ */
 
 /*
  * Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
@@ -813,7 +813,7 @@ struct session {
 #define SESSION_DEAD 0x2
 	int		 flags;
 
-	struct termios   tio;
+	struct termios	*tio;
 
 	struct environ	 environ;
 
diff --git a/window.c b/window.c
index 6aee42a9..2d86b9f3 100644
--- a/window.c
+++ b/window.c
@@ -1,4 +1,4 @@
-/* $Id: window.c,v 1.106 2009-09-02 01:08:32 tcunha Exp $ */
+/* $Id: window.c,v 1.107 2009-09-16 12:36:28 nicm Exp $ */
 
 /*
  * Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
@@ -452,6 +452,7 @@ window_pane_spawn(struct window_pane *wp, const char *cmd, const char *shell,
 	struct environ_entry	*envent;
 	const char		*ptr;
 	struct timeval	 	 tv;
+	struct termios		 tio2;
 	u_int		 	 i;
 
 	if (wp->fd != -1)
@@ -482,7 +483,7 @@ window_pane_spawn(struct window_pane *wp, const char *cmd, const char *shell,
 	tv.tv_usec = NAME_INTERVAL * 1000L;
 	timeradd(&wp->window->name_timer, &tv, &wp->window->name_timer);
 
- 	switch (wp->pid = forkpty(&wp->fd, wp->tty, tio, &ws)) {
+ 	switch (wp->pid = forkpty(&wp->fd, wp->tty, NULL, &ws)) {
 	case -1:
 		wp->fd = -1;
 		xasprintf(cause, "%s: %s", cmd, strerror(errno));
@@ -491,6 +492,14 @@ window_pane_spawn(struct window_pane *wp, const char *cmd, const char *shell,
 		if (chdir(wp->cwd) != 0)
 			chdir("/");
 
+		if (tcgetattr(STDIN_FILENO, &tio2) != 0)
+			fatal("tcgetattr failed");
+		if (tio != NULL)
+			memcpy(tio2.c_cc, tio->c_cc, sizeof tio2.c_cc);
+		tio2.c_cc[VERASE] = '\177';
+		if (tcsetattr(STDIN_FILENO, TCSANOW, &tio2) != 0)
+			fatal("tcgetattr failed");
+
 		ARRAY_INIT(&varlist);
 		for (varp = environ; *varp != NULL; varp++) {
 			var = xstrdup(*varp);