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[Emacs-diffs] Changes to emacs/src/term.c,v


From: Miles Bader
Subject: [Emacs-diffs] Changes to emacs/src/term.c,v
Date: Wed, 29 Aug 2007 05:28:24 +0000

CVSROOT:        /cvsroot/emacs
Module name:    emacs
Changes by:     Miles Bader <miles>     07/08/29 05:28:10

Index: src/term.c
===================================================================
RCS file: /cvsroot/emacs/emacs/src/term.c,v
retrieving revision 1.190
retrieving revision 1.191
diff -u -b -r1.190 -r1.191
--- src/term.c  16 Aug 2007 03:15:08 -0000      1.190
+++ src/term.c  29 Aug 2007 05:27:55 -0000      1.191
@@ -25,13 +25,22 @@
 #include <stdio.h>
 #include <ctype.h>
 #include <string.h>
+#include <errno.h>
+#include <sys/file.h>
+
 #ifdef HAVE_UNISTD_H
 #include <unistd.h>
 #endif
 
+#if HAVE_TERMIOS_H
+#include <termios.h>           /* For TIOCNOTTY. */
+#endif
+
+#include <signal.h>
+
+#include "lisp.h"
 #include "termchar.h"
 #include "termopts.h"
-#include "lisp.h"
 #include "charset.h"
 #include "coding.h"
 #include "keyboard.h"
@@ -42,6 +51,8 @@
 #include "window.h"
 #include "keymap.h"
 #include "blockinput.h"
+#include "syssignal.h"
+#include "systty.h"
 #include "intervals.h"
 
 /* For now, don't try to include termcap.h.  On some systems,
@@ -65,220 +76,67 @@
 #include "macterm.h"
 #endif
 
+#ifndef O_RDWR
+#define O_RDWR 2
+#endif
+
+#ifndef O_NOCTTY
+#define O_NOCTTY 0
+#endif
+
+static void tty_set_scroll_region P_ ((struct frame *f, int start, int stop));
 static void turn_on_face P_ ((struct frame *, int face_id));
 static void turn_off_face P_ ((struct frame *, int face_id));
-static void tty_show_cursor P_ ((void));
-static void tty_hide_cursor P_ ((void));
+static void tty_show_cursor P_ ((struct tty_display_info *));
+static void tty_hide_cursor P_ ((struct tty_display_info *));
+static void tty_background_highlight P_ ((struct tty_display_info *tty));
+static void clear_tty_hooks P_ ((struct terminal *terminal));
+static void set_tty_hooks P_ ((struct terminal *terminal));
+static void dissociate_if_controlling_tty P_ ((int fd));
+static void delete_tty P_ ((struct terminal *));
+
+#define OUTPUT(tty, a)                                          \
+  emacs_tputs ((tty), a,                                        \
+               (int) (FRAME_LINES (XFRAME (selected_frame))     \
+                      - curY (tty)),                            \
+               cmputc)
 
-#define OUTPUT(a) \
-     tputs (a, (int) (FRAME_LINES (XFRAME (selected_frame)) - curY), cmputc)
-#define OUTPUT1(a) tputs (a, 1, cmputc)
-#define OUTPUTL(a, lines) tputs (a, lines, cmputc)
+#define OUTPUT1(tty, a) emacs_tputs ((tty), a, 1, cmputc)
+#define OUTPUTL(tty, a, lines) emacs_tputs ((tty), a, lines, cmputc)
 
-#define OUTPUT_IF(a)                                                   \
+#define OUTPUT_IF(tty, a)                                               \
      do {                                                              \
        if (a)                                                          \
-         tputs (a, (int) (FRAME_LINES (XFRAME (selected_frame))        \
-                         - curY), cmputc);                             \
+      emacs_tputs ((tty), a,                                            \
+                   (int) (FRAME_LINES (XFRAME (selected_frame))         \
+                          - curY (tty) ),                               \
+                   cmputc);                                             \
      } while (0)
 
-#define OUTPUT1_IF(a) do { if (a) tputs (a, 1, cmputc); } while (0)
-
-/* Display space properties */
-
-extern Lisp_Object Qspace, QCalign_to, QCwidth;
-
-/* Function to use to ring the bell.  */
-
-Lisp_Object Vring_bell_function;
+#define OUTPUT1_IF(tty, a) do { if (a) emacs_tputs ((tty), a, 1, cmputc); } 
while (0)
 
 /* If true, use "vs", otherwise use "ve" to make the cursor visible.  */
 
 static int visible_cursor;
 
-/* Terminal characteristics that higher levels want to look at.
-   These are all extern'd in termchar.h */
-
-int must_write_spaces;         /* Nonzero means spaces in the text
-                                  must actually be output; can't just skip
-                                  over some columns to leave them blank.  */
-int min_padding_speed;         /* Speed below which no padding necessary */
-
-int line_ins_del_ok;           /* Terminal can insert and delete lines */
-int char_ins_del_ok;           /* Terminal can insert and delete chars */
-int scroll_region_ok;          /* Terminal supports setting the
-                                  scroll window */
-int scroll_region_cost;                /* Cost of setting a scroll window,
-                                  measured in characters */
-int memory_below_frame;                /* Terminal remembers lines
-                                  scrolled off bottom */
-int fast_clear_end_of_line;    /* Terminal has a `ce' string */
-
-/* Nonzero means no need to redraw the entire frame on resuming
-   a suspended Emacs.  This is useful on terminals with multiple pages,
-   where one page is used for Emacs and another for all else. */
+/* Display space properties */
 
-int no_redraw_on_reenter;
+extern Lisp_Object Qspace, QCalign_to, QCwidth;
 
-/* Hook functions that you can set to snap out the functions in this file.
-   These are all extern'd in termhooks.h  */
+/* Functions to call after suspending a tty. */
+Lisp_Object Vsuspend_tty_functions;
 
-void (*cursor_to_hook) P_ ((int, int));
-void (*raw_cursor_to_hook) P_ ((int, int));
-void (*clear_to_end_hook) P_ ((void));
-void (*clear_frame_hook) P_ ((void));
-void (*clear_end_of_line_hook) P_ ((int));
-
-void (*ins_del_lines_hook) P_ ((int, int));
-
-void (*delete_glyphs_hook) P_ ((int));
-
-void (*ring_bell_hook) P_ ((void));
-
-void (*reset_terminal_modes_hook) P_ ((void));
-void (*set_terminal_modes_hook) P_ ((void));
-void (*update_begin_hook) P_ ((struct frame *));
-void (*update_end_hook) P_ ((struct frame *));
-void (*set_terminal_window_hook) P_ ((int));
-void (*insert_glyphs_hook) P_ ((struct glyph *, int));
-void (*write_glyphs_hook) P_ ((struct glyph *, int));
-void (*delete_glyphs_hook) P_ ((int));
-
-int (*read_socket_hook) P_ ((int, int, struct input_event *));
-
-void (*frame_up_to_date_hook) P_ ((struct frame *));
-
-void (*mouse_position_hook) P_ ((FRAME_PTR *f, int insist,
-                                Lisp_Object *bar_window,
-                                enum scroll_bar_part *part,
-                                Lisp_Object *x,
-                                Lisp_Object *y,
-                                unsigned long *time));
-
-/* When reading from a minibuffer in a different frame, Emacs wants
-   to shift the highlight from the selected frame to the mini-buffer's
-   frame; under X, this means it lies about where the focus is.
-   This hook tells the window system code to re-decide where to put
-   the highlight.  */
-
-void (*frame_rehighlight_hook) P_ ((FRAME_PTR f));
-
-/* If we're displaying frames using a window system that can stack
-   frames on top of each other, this hook allows you to bring a frame
-   to the front, or bury it behind all the other windows.  If this
-   hook is zero, that means the device we're displaying on doesn't
-   support overlapping frames, so there's no need to raise or lower
-   anything.
-
-   If RAISE is non-zero, F is brought to the front, before all other
-   windows.  If RAISE is zero, F is sent to the back, behind all other
-   windows.  */
-
-void (*frame_raise_lower_hook) P_ ((FRAME_PTR f, int raise));
-
-/* If the value of the frame parameter changed, whis hook is called.
-   For example, if going from fullscreen to not fullscreen this hook
-   may do something OS dependent, like extended window manager hints on X11.  
*/
-void (*fullscreen_hook) P_ ((struct frame *f));
-
-/* Set the vertical scroll bar for WINDOW to have its upper left corner
-   at (TOP, LEFT), and be LENGTH rows high.  Set its handle to
-   indicate that we are displaying PORTION characters out of a total
-   of WHOLE characters, starting at POSITION.  If WINDOW doesn't yet
-   have a scroll bar, create one for it.  */
-
-void (*set_vertical_scroll_bar_hook)
-     P_ ((struct window *window,
-         int portion, int whole, int position));
-
-
-/* The following three hooks are used when we're doing a thorough
-   redisplay of the frame.  We don't explicitly know which scroll bars
-   are going to be deleted, because keeping track of when windows go
-   away is a real pain - can you say set-window-configuration?
-   Instead, we just assert at the beginning of redisplay that *all*
-   scroll bars are to be removed, and then save scroll bars from the
-   fiery pit when we actually redisplay their window.  */
-
-/* Arrange for all scroll bars on FRAME to be removed at the next call
-   to `*judge_scroll_bars_hook'.  A scroll bar may be spared if
-   `*redeem_scroll_bar_hook' is applied to its window before the judgment.
-
-   This should be applied to each frame each time its window tree is
-   redisplayed, even if it is not displaying scroll bars at the moment;
-   if the HAS_SCROLL_BARS flag has just been turned off, only calling
-   this and the judge_scroll_bars_hook will get rid of them.
-
-   If non-zero, this hook should be safe to apply to any frame,
-   whether or not it can support scroll bars, and whether or not it is
-   currently displaying them.  */
-
-void (*condemn_scroll_bars_hook) P_ ((FRAME_PTR frame));
-
-/* Unmark WINDOW's scroll bar for deletion in this judgement cycle.
-   Note that it's okay to redeem a scroll bar that is not condemned.  */
-
-void (*redeem_scroll_bar_hook) P_ ((struct window *window));
-
-/* Remove all scroll bars on FRAME that haven't been saved since the
-   last call to `*condemn_scroll_bars_hook'.
-
-   This should be applied to each frame after each time its window
-   tree is redisplayed, even if it is not displaying scroll bars at the
-   moment; if the HAS_SCROLL_BARS flag has just been turned off, only
-   calling this and condemn_scroll_bars_hook will get rid of them.
-
-   If non-zero, this hook should be safe to apply to any frame,
-   whether or not it can support scroll bars, and whether or not it is
-   currently displaying them.  */
-
-void (*judge_scroll_bars_hook) P_ ((FRAME_PTR FRAME));
-
-/* Strings, numbers and flags taken from the termcap entry.  */
-
-char *TS_ins_line;             /* "al" */
-char *TS_ins_multi_lines;      /* "AL" (one parameter, # lines to insert) */
-char *TS_bell;                 /* "bl" */
-char *TS_clr_to_bottom;                /* "cd" */
-char *TS_clr_line;             /* "ce", clear to end of line */
-char *TS_clr_frame;            /* "cl" */
-char *TS_set_scroll_region;    /* "cs" (2 params, first line and last line) */
-char *TS_set_scroll_region_1;   /* "cS" (4 params: total lines,
-                                  lines above scroll region, lines below it,
-                                  total lines again) */
-char *TS_del_char;             /* "dc" */
-char *TS_del_multi_chars;      /* "DC" (one parameter, # chars to delete) */
-char *TS_del_line;             /* "dl" */
-char *TS_del_multi_lines;      /* "DL" (one parameter, # lines to delete) */
-char *TS_delete_mode;          /* "dm", enter character-delete mode */
-char *TS_end_delete_mode;      /* "ed", leave character-delete mode */
-char *TS_end_insert_mode;      /* "ei", leave character-insert mode */
-char *TS_ins_char;             /* "ic" */
-char *TS_ins_multi_chars;      /* "IC" (one parameter, # chars to insert) */
-char *TS_insert_mode;          /* "im", enter character-insert mode */
-char *TS_pad_inserted_char;    /* "ip".  Just padding, no commands.  */
-char *TS_end_keypad_mode;      /* "ke" */
-char *TS_keypad_mode;          /* "ks" */
-char *TS_pad_char;             /* "pc", char to use as padding */
-char *TS_repeat;               /* "rp" (2 params, # times to repeat
-                                  and character to be repeated) */
-char *TS_end_standout_mode;    /* "se" */
-char *TS_fwd_scroll;           /* "sf" */
-char *TS_standout_mode;                /* "so" */
-char *TS_rev_scroll;           /* "sr" */
-char *TS_end_termcap_modes;    /* "te" */
-char *TS_termcap_modes;                /* "ti" */
-char *TS_visible_bell;         /* "vb" */
-char *TS_cursor_normal;                /* "ve" */
-char *TS_cursor_visible;       /* "vs" */
-char *TS_cursor_invisible;     /* "vi" */
-char *TS_set_window;           /* "wi" (4 params, start and end of window,
-                                  each as vpos and hpos) */
+/* Functions to call after resuming a tty. */
+Lisp_Object Vresume_tty_functions;
 
-/* Value of the "NC" (no_color_video) capability, or 0 if not
-   present.  */
+/* Chain of all tty device parameters. */
+struct tty_display_info *tty_list;
 
-static int TN_no_color_video;
+/* Nonzero means no need to redraw the entire frame on resuming a
+   suspended Emacs.  This is useful on terminals with multiple
+   pages, where one page is used for Emacs and another for all
+   else. */
+int no_redraw_on_reenter;
 
 /* Meaning of bits in no_color_video.  Each bit set means that the
    corresponding attribute cannot be combined with colors.  */
@@ -296,68 +154,6 @@
   NC_ALT_CHARSET = 1 << 8
 };
 
-/* "md" -- turn on bold (extra bright mode).  */
-
-char *TS_enter_bold_mode;
-
-/* "mh" -- turn on half-bright mode.  */
-
-char *TS_enter_dim_mode;
-
-/* "mb" -- enter blinking mode.  */
-
-char *TS_enter_blink_mode;
-
-/* "mr" -- enter reverse video mode.  */
-
-char *TS_enter_reverse_mode;
-
-/* "us"/"ue" -- start/end underlining.  */
-
-char *TS_exit_underline_mode, *TS_enter_underline_mode;
-
-/* "as"/"ae" -- start/end alternate character set.  Not really
-   supported, yet.  */
-
-char *TS_enter_alt_charset_mode, *TS_exit_alt_charset_mode;
-
-/* "me" -- switch appearances off.  */
-
-char *TS_exit_attribute_mode;
-
-/* "Co" -- number of colors.  */
-
-int TN_max_colors;
-
-/* "pa" -- max. number of color pairs on screen.  Not handled yet.
-   Could be a problem if not equal to TN_max_colors * TN_max_colors.  */
-
-int TN_max_pairs;
-
-/* "op" -- SVr4 set default pair to its original value.  */
-
-char *TS_orig_pair;
-
-/* "AF"/"AB" or "Sf"/"Sb"-- set ANSI or SVr4 foreground/background color.
-   1 param, the color index.  */
-
-char *TS_set_foreground, *TS_set_background;
-
-int TF_hazeltine;      /* termcap hz flag. */
-int TF_insmode_motion; /* termcap mi flag: can move while in insert mode. */
-int TF_standout_motion;        /* termcap mi flag: can move while in standout 
mode. */
-int TF_underscore;     /* termcap ul flag: _ underlines if over-struck on
-                          non-blank position.  Must clear before writing _.  */
-int TF_teleray;                /* termcap xt flag: many weird consequences.
-                          For t1061. */
-
-static int RPov;       /* # chars to start a TS_repeat */
-
-static int delete_in_insert_mode;      /* delete mode == insert mode */
-
-static int se_is_so;   /* 1 if same string both enters and leaves
-                          standout mode */
-
 /* internal state */
 
 /* The largest frame width in any call to calculate_costs.  */
@@ -368,33 +164,14 @@
 
 int max_frame_lines;
 
-static int costs_set;    /* Nonzero if costs have been calculated. */
-
-int insert_mode;                       /* Nonzero when in insert mode.  */
-int standout_mode;                     /* Nonzero when in standout mode.  */
-
-/* Size of window specified by higher levels.
-   This is the number of lines, from the top of frame downwards,
-   which can participate in insert-line/delete-line operations.
-
-   Effectively it excludes the bottom frame_lines - specified_window_size
-   lines from those operations.  */
-
-int specified_window;
-
-/* Frame currently being redisplayed; 0 if not currently redisplaying.
-   (Direct output does not count).  */
-
-FRAME_PTR updating_frame;
+/* Non-zero if we have dropped our controlling tty and therefore
+   should not open a frame on stdout. */
+static int no_controlling_tty;
 
 /* Provided for lisp packages.  */
 
 static int system_uses_terminfo;
 
-/* Flag used in tty_show/hide_cursor.  */
-
-static int tty_cursor_hidden;
-
 char *tparam ();
 
 extern char *tgetstr ();
@@ -421,6 +198,9 @@
 /* Nonzero means mouse is enabled on Linux console.  */
 int term_gpm = 0;
 
+/* The id of the terminal device for which we have gpm support.  */
+int gpm_tty;
+
 /* These variables describe the range of text currently shown in its
    mouse-face, together with the window they apply to.  As long as
    the mouse stays within this range, we need not redraw anything on
@@ -436,192 +216,173 @@
 static int last_mouse_x, last_mouse_y;
 #endif /* HAVE_GPM */
 
-void
-ring_bell ()
-{
-  if (!NILP (Vring_bell_function))
-    {
-      Lisp_Object function;
-
-      /* Temporarily set the global variable to nil
-        so that if we get an error, it stays nil
-        and we don't call it over and over.
-
-        We don't specbind it, because that would carefully
-        restore the bad value if there's an error
-        and make the loop of errors happen anyway.  */
-
-      function = Vring_bell_function;
-      Vring_bell_function = Qnil;
+/* Ring the bell on a tty. */
 
-      call0 (function);
+static void
+tty_ring_bell (struct frame *f)
+{
+  struct tty_display_info *tty = FRAME_TTY (f);
 
-      Vring_bell_function = function;
+  if (tty->output)
+    {
+      OUTPUT (tty, (tty->TS_visible_bell && visible_bell
+                    ? tty->TS_visible_bell
+                    : tty->TS_bell));
+      fflush (tty->output);
     }
-  else if (!FRAME_TERMCAP_P (XFRAME (selected_frame)))
-    (*ring_bell_hook) ();
-  else
-    OUTPUT (TS_visible_bell && visible_bell ? TS_visible_bell : TS_bell);
 }
 
+/* Set up termcap modes for Emacs. */
+
 void
-set_terminal_modes ()
+tty_set_terminal_modes (struct terminal *terminal)
 {
-  if (FRAME_TERMCAP_P (XFRAME (selected_frame)))
+  struct tty_display_info *tty = terminal->display_info.tty;
+  
+  if (tty->output)
     {
-      if (TS_termcap_modes)
-       OUTPUT (TS_termcap_modes);
+      if (tty->TS_termcap_modes)
+        OUTPUT (tty, tty->TS_termcap_modes);
       else
        {
          /* Output enough newlines to scroll all the old screen contents
             off the screen, so it won't be overwritten and lost.  */
          int i;
+          current_tty = tty;
          for (i = 0; i < FRAME_LINES (XFRAME (selected_frame)); i++)
-           putchar ('\n');
+            cmputc ('\n');
        }
 
-      OUTPUT_IF (visible_cursor ? TS_cursor_visible : TS_cursor_normal);
-      OUTPUT_IF (TS_keypad_mode);
-      losecursor ();
+      OUTPUT_IF (tty, tty->TS_termcap_modes);
+      OUTPUT_IF (tty, visible_cursor ? tty->TS_cursor_visible : 
tty->TS_cursor_normal);
+      OUTPUT_IF (tty, tty->TS_keypad_mode);
+      losecursor (tty);
+      fflush (tty->output);
     }
-  else
-    (*set_terminal_modes_hook) ();
 }
 
+/* Reset termcap modes before exiting Emacs. */
+
 void
-reset_terminal_modes ()
+tty_reset_terminal_modes (struct terminal *terminal)
 {
-  if (FRAME_TERMCAP_P (XFRAME (selected_frame)))
+  struct tty_display_info *tty = terminal->display_info.tty;
+
+  if (tty->output)
     {
-      turn_off_highlight ();
-      turn_off_insert ();
-      OUTPUT_IF (TS_end_keypad_mode);
-      OUTPUT_IF (TS_cursor_normal);
-      OUTPUT_IF (TS_end_termcap_modes);
-      OUTPUT_IF (TS_orig_pair);
+      tty_turn_off_highlight (tty);
+      tty_turn_off_insert (tty);
+      OUTPUT_IF (tty, tty->TS_end_keypad_mode);
+      OUTPUT_IF (tty, tty->TS_cursor_normal);
+      OUTPUT_IF (tty, tty->TS_end_termcap_modes);
+      OUTPUT_IF (tty, tty->TS_orig_pair);
       /* Output raw CR so kernel can track the cursor hpos.  */
+      current_tty = tty;
       cmputc ('\r');
+      fflush (tty->output);
     }
-  else if (reset_terminal_modes_hook)
-    (*reset_terminal_modes_hook) ();
 }
 
-void
-update_begin (f)
-     struct frame *f;
-{
-  updating_frame = f;
-  if (!FRAME_TERMCAP_P (f))
-    update_begin_hook (f);
-}
+/* Flag the end of a display update on a termcap terminal. */
 
-void
-update_end (f)
-     struct frame *f;
+static void
+tty_update_end (struct frame *f)
 {
-  if (FRAME_TERMCAP_P (f))
-    {
-      if (!XWINDOW (selected_window)->cursor_off_p)
-       tty_show_cursor ();
-      turn_off_insert ();
-      background_highlight ();
-    }
-  else
-    update_end_hook (f);
+  struct tty_display_info *tty = FRAME_TTY (f);
 
-  updating_frame = NULL;
+  if (!XWINDOW (selected_window)->cursor_off_p)
+    tty_show_cursor (tty);
+  tty_turn_off_insert (tty);
+  tty_background_highlight (tty);
 }
 
-void
-set_terminal_window (size)
-     int size;
+/* The implementation of set_terminal_window for termcap frames. */
+
+static void
+tty_set_terminal_window (struct frame *f, int size)
 {
-  if (FRAME_TERMCAP_P (updating_frame))
-    {
-      specified_window = size ? size : FRAME_LINES (updating_frame);
-      if (scroll_region_ok)
-       set_scroll_region (0, specified_window);
-    }
-  else
-    set_terminal_window_hook (size);
+  struct tty_display_info *tty = FRAME_TTY (f);
+
+  tty->specified_window = size ? size : FRAME_LINES (f);
+  if (FRAME_SCROLL_REGION_OK (f))
+    tty_set_scroll_region (f, 0, tty->specified_window);
 }
 
-void
-set_scroll_region (start, stop)
-     int start, stop;
+static void
+tty_set_scroll_region (struct frame *f, int start, int stop)
 {
   char *buf;
-  struct frame *sf = XFRAME (selected_frame);
+  struct tty_display_info *tty = FRAME_TTY (f);
 
-  if (TS_set_scroll_region)
-    buf = tparam (TS_set_scroll_region, 0, 0, start, stop - 1);
-  else if (TS_set_scroll_region_1)
-    buf = tparam (TS_set_scroll_region_1, 0, 0,
-                 FRAME_LINES (sf), start,
-                 FRAME_LINES (sf) - stop,
-                 FRAME_LINES (sf));
+  if (tty->TS_set_scroll_region)
+    buf = tparam (tty->TS_set_scroll_region, 0, 0, start, stop - 1);
+  else if (tty->TS_set_scroll_region_1)
+    buf = tparam (tty->TS_set_scroll_region_1, 0, 0,
+                 FRAME_LINES (f), start,
+                 FRAME_LINES (f) - stop,
+                 FRAME_LINES (f));
   else
-    buf = tparam (TS_set_window, 0, 0, start, 0, stop, FRAME_COLS (sf));
+    buf = tparam (tty->TS_set_window, 0, 0, start, 0, stop, FRAME_COLS (f));
 
-  OUTPUT (buf);
+  OUTPUT (tty, buf);
   xfree (buf);
-  losecursor ();
+  losecursor (tty);
 }
 
 
 static void
-turn_on_insert ()
+tty_turn_on_insert (struct tty_display_info *tty)
 {
-  if (!insert_mode)
-    OUTPUT (TS_insert_mode);
-  insert_mode = 1;
+  if (!tty->insert_mode)
+    OUTPUT (tty, tty->TS_insert_mode);
+  tty->insert_mode = 1;
 }
 
 void
-turn_off_insert ()
+tty_turn_off_insert (struct tty_display_info *tty)
 {
-  if (insert_mode)
-    OUTPUT (TS_end_insert_mode);
-  insert_mode = 0;
+  if (tty->insert_mode)
+    OUTPUT (tty, tty->TS_end_insert_mode);
+  tty->insert_mode = 0;
 }
 
 /* Handle highlighting.  */
 
 void
-turn_off_highlight ()
+tty_turn_off_highlight (struct tty_display_info *tty)
 {
-  if (standout_mode)
-    OUTPUT_IF (TS_end_standout_mode);
-  standout_mode = 0;
+  if (tty->standout_mode)
+    OUTPUT_IF (tty, tty->TS_end_standout_mode);
+  tty->standout_mode = 0;
 }
 
 static void
-turn_on_highlight ()
+tty_turn_on_highlight (struct tty_display_info *tty)
 {
-  if (!standout_mode)
-    OUTPUT_IF (TS_standout_mode);
-  standout_mode = 1;
+  if (!tty->standout_mode)
+    OUTPUT_IF (tty, tty->TS_standout_mode);
+  tty->standout_mode = 1;
 }
 
 static void
-toggle_highlight ()
+tty_toggle_highlight (struct tty_display_info *tty)
 {
-  if (standout_mode)
-    turn_off_highlight ();
+  if (tty->standout_mode)
+    tty_turn_off_highlight (tty);
   else
-    turn_on_highlight ();
+    tty_turn_on_highlight (tty);
 }
 
 
 /* Make cursor invisible.  */
 
 static void
-tty_hide_cursor ()
+tty_hide_cursor (struct tty_display_info *tty)
 {
-  if (tty_cursor_hidden == 0)
+  if (tty->cursor_hidden == 0)
     {
-      tty_cursor_hidden = 1;
-      OUTPUT_IF (TS_cursor_invisible);
+      tty->cursor_hidden = 1;
+      OUTPUT_IF (tty, tty->TS_cursor_invisible);
     }
 }
 
@@ -629,14 +390,14 @@
 /* Ensure that cursor is visible.  */
 
 static void
-tty_show_cursor ()
+tty_show_cursor (struct tty_display_info *tty)
 {
-  if (tty_cursor_hidden)
+  if (tty->cursor_hidden)
     {
-      tty_cursor_hidden = 0;
-      OUTPUT_IF (TS_cursor_normal);
+      tty->cursor_hidden = 0;
+      OUTPUT_IF (tty, tty->TS_cursor_normal);
       if (visible_cursor)
-       OUTPUT_IF (TS_cursor_visible);
+        OUTPUT_IF (tty, tty->TS_cursor_visible);
     }
 }
 
@@ -645,180 +406,151 @@
    empty space inside windows.  What this is,
    depends on the user option inverse-video.  */
 
-void
-background_highlight ()
+static void
+tty_background_highlight (struct tty_display_info *tty)
 {
   if (inverse_video)
-    turn_on_highlight ();
+    tty_turn_on_highlight (tty);
   else
-    turn_off_highlight ();
+    tty_turn_off_highlight (tty);
 }
 
 /* Set standout mode to the mode specified for the text to be output.  */
 
 static void
-highlight_if_desired ()
+tty_highlight_if_desired (struct tty_display_info *tty)
 {
   if (inverse_video)
-    turn_on_highlight ();
+    tty_turn_on_highlight (tty);
   else
-    turn_off_highlight ();
+    tty_turn_off_highlight (tty);
 }
 
 
 /* Move cursor to row/column position VPOS/HPOS.  HPOS/VPOS are
    frame-relative coordinates.  */
 
-void
-cursor_to (vpos, hpos)
-     int vpos, hpos;
+static void
+tty_cursor_to (struct frame *f, int vpos, int hpos)
 {
-  struct frame *f = updating_frame ? updating_frame : XFRAME (selected_frame);
-
-  if (! FRAME_TERMCAP_P (f) && cursor_to_hook)
-    {
-      (*cursor_to_hook) (vpos, hpos);
-      return;
-    }
+  struct tty_display_info *tty = FRAME_TTY (f);
 
   /* Detect the case where we are called from reset_sys_modes
      and the costs have never been calculated.  Do nothing.  */
-  if (! costs_set)
+  if (! tty->costs_set)
     return;
 
-  if (curY == vpos && curX == hpos)
+  if (curY (tty) == vpos
+      && curX (tty) == hpos)
     return;
-  if (!TF_standout_motion)
-    background_highlight ();
-  if (!TF_insmode_motion)
-    turn_off_insert ();
-  cmgoto (vpos, hpos);
+  if (!tty->TF_standout_motion)
+    tty_background_highlight (tty);
+  if (!tty->TF_insmode_motion)
+    tty_turn_off_insert (tty);
+  cmgoto (tty, vpos, hpos);
 }
 
 /* Similar but don't take any account of the wasted characters.  */
 
-void
-raw_cursor_to (row, col)
-     int row, col;
+static void
+tty_raw_cursor_to (struct frame *f, int row, int col)
 {
-  struct frame *f = updating_frame ? updating_frame : XFRAME (selected_frame);
-  if (! FRAME_TERMCAP_P (f))
-    {
-      (*raw_cursor_to_hook) (row, col);
-      return;
-    }
-  if (curY == row && curX == col)
+  struct tty_display_info *tty = FRAME_TTY (f);
+
+  if (curY (tty) == row
+      && curX (tty) == col)
     return;
-  if (!TF_standout_motion)
-    background_highlight ();
-  if (!TF_insmode_motion)
-    turn_off_insert ();
-  cmgoto (row, col);
+  if (!tty->TF_standout_motion)
+    tty_background_highlight (tty);
+  if (!tty->TF_insmode_motion)
+    tty_turn_off_insert (tty);
+  cmgoto (tty, row, col);
 }
 
 /* Erase operations */
 
-/* clear from cursor to end of frame */
-void
-clear_to_end ()
+/* Clear from cursor to end of frame on a termcap device. */
+
+static void
+tty_clear_to_end (struct frame *f)
 {
   register int i;
+  struct tty_display_info *tty = FRAME_TTY (f);
 
-  if (clear_to_end_hook && ! FRAME_TERMCAP_P (updating_frame))
-    {
-      (*clear_to_end_hook) ();
-      return;
-    }
-  if (TS_clr_to_bottom)
+  if (tty->TS_clr_to_bottom)
     {
-      background_highlight ();
-      OUTPUT (TS_clr_to_bottom);
+      tty_background_highlight (tty);
+      OUTPUT (tty, tty->TS_clr_to_bottom);
     }
   else
     {
-      for (i = curY; i < FRAME_LINES (XFRAME (selected_frame)); i++)
+      for (i = curY (tty); i < FRAME_LINES (f); i++)
        {
-         cursor_to (i, 0);
-         clear_end_of_line (FRAME_COLS (XFRAME (selected_frame)));
+         cursor_to (f, i, 0);
+         clear_end_of_line (f, FRAME_COLS (f));
        }
     }
 }
 
-/* Clear entire frame */
+/* Clear an entire termcap frame. */
 
-void
-clear_frame ()
+static void
+tty_clear_frame (struct frame *f)
 {
-  struct frame *sf = XFRAME (selected_frame);
+  struct tty_display_info *tty = FRAME_TTY (f);
 
-  if (clear_frame_hook
-      && ! FRAME_TERMCAP_P ((updating_frame ? updating_frame : sf)))
-    {
-      (*clear_frame_hook) ();
-      return;
-    }
-  if (TS_clr_frame)
+  if (tty->TS_clr_frame)
     {
-      background_highlight ();
-      OUTPUT (TS_clr_frame);
-      cmat (0, 0);
+      tty_background_highlight (tty);
+      OUTPUT (tty, tty->TS_clr_frame);
+      cmat (tty, 0, 0);
     }
   else
     {
-      cursor_to (0, 0);
-      clear_to_end ();
+      cursor_to (f, 0, 0);
+      clear_to_end (f);
     }
 }
 
-/* Clear from cursor to end of line.
-   Assume that the line is already clear starting at column first_unused_hpos.
+/* An implementation of clear_end_of_line for termcap frames.
 
    Note that the cursor may be moved, on terminals lacking a `ce' string.  */
 
-void
-clear_end_of_line (first_unused_hpos)
-     int first_unused_hpos;
+static void
+tty_clear_end_of_line (struct frame *f, int first_unused_hpos)
 {
   register int i;
-
-  if (clear_end_of_line_hook
-      && ! FRAME_TERMCAP_P ((updating_frame
-                              ? updating_frame
-                            : XFRAME (selected_frame))))
-    {
-      (*clear_end_of_line_hook) (first_unused_hpos);
-      return;
-    }
+  struct tty_display_info *tty = FRAME_TTY (f);
 
   /* Detect the case where we are called from reset_sys_modes
      and the costs have never been calculated.  Do nothing.  */
-  if (! costs_set)
+  if (! tty->costs_set)
     return;
 
-  if (curX >= first_unused_hpos)
+  if (curX (tty) >= first_unused_hpos)
     return;
-  background_highlight ();
-  if (TS_clr_line)
+  tty_background_highlight (tty);
+  if (tty->TS_clr_line)
     {
-      OUTPUT1 (TS_clr_line);
+      OUTPUT1 (tty, tty->TS_clr_line);
     }
   else
     {                  /* have to do it the hard way */
-      struct frame *sf = XFRAME (selected_frame);
-      turn_off_insert ();
+      tty_turn_off_insert (tty);
 
       /* Do not write in last row last col with Auto-wrap on. */
-      if (AutoWrap && curY == FRAME_LINES (sf) - 1
-         && first_unused_hpos == FRAME_COLS (sf))
+      if (AutoWrap (tty)
+          && curY (tty) == FrameRows (tty) - 1
+         && first_unused_hpos == FrameCols (tty))
        first_unused_hpos--;
 
-      for (i = curX; i < first_unused_hpos; i++)
+      for (i = curX (tty); i < first_unused_hpos; i++)
        {
-         if (termscript)
-           fputc (' ', termscript);
-         putchar (' ');
+         if (tty->termscript)
+           fputc (' ', tty->termscript);
+         fputc (' ', tty->output);
        }
-      cmplus (first_unused_hpos - curX);
+      cmplus (tty, first_unused_hpos - curX (tty));
     }
 }
 
@@ -940,43 +672,37 @@
   return encode_terminal_buf + nbytes;
 }
 
-void
-write_glyphs (string, len)
-     register struct glyph *string;
-     register int len;
+
+/* An implementation of write_glyphs for termcap frames. */
+
+static void
+tty_write_glyphs (struct frame *f, struct glyph *string, int len)
 {
-  struct frame *sf = XFRAME (selected_frame);
-  struct frame *f = updating_frame ? updating_frame : sf;
   unsigned char *conversion_buffer;
   struct coding_system *coding;
 
-  if (write_glyphs_hook
-      && ! FRAME_TERMCAP_P (f))
-    {
-      (*write_glyphs_hook) (string, len);
-      return;
-    }
+  struct tty_display_info *tty = FRAME_TTY (f);
 
-  turn_off_insert ();
-  tty_hide_cursor ();
+  tty_turn_off_insert (tty);
+  tty_hide_cursor (tty);
 
   /* Don't dare write in last column of bottom line, if Auto-Wrap,
      since that would scroll the whole frame on some terminals.  */
 
-  if (AutoWrap
-      && curY + 1 == FRAME_LINES (sf)
-      && (curX + len) == FRAME_COLS (sf))
+  if (AutoWrap (tty)
+      && curY (tty) + 1 == FRAME_LINES (f)
+      && (curX (tty) + len) == FRAME_COLS (f))
     len --;
   if (len <= 0)
     return;
 
-  cmplus (len);
+  cmplus (tty, len);
 
   /* If terminal_coding does any conversion, use it, otherwise use
      safe_terminal_coding.  We can't use CODING_REQUIRE_ENCODING here
      because it always return 1 if the member src_multibyte is 1.  */
-  coding = (terminal_coding.common_flags & CODING_REQUIRE_ENCODING_MASK
-           ? &terminal_coding : &safe_terminal_coding);
+  coding = (FRAME_TERMINAL_CODING (f)->common_flags & 
CODING_REQUIRE_ENCODING_MASK
+           ? FRAME_TERMINAL_CODING (f) : &safe_terminal_coding);
   /* The mode bit CODING_MODE_LAST_BLOCK should be set to 1 only at
      the tail.  */
   coding->mode &= ~CODING_MODE_LAST_BLOCK;
@@ -992,7 +718,7 @@
          break;
 
       /* Turn appearance modes of the face of the run on.  */
-      highlight_if_desired ();
+      tty_highlight_if_desired (tty);
       turn_on_face (f, face_id);
 
       if (n == len)
@@ -1002,11 +728,11 @@
       if (coding->produced > 0)
        {
          BLOCK_INPUT;
-         fwrite (conversion_buffer, 1, coding->produced, stdout);
-         if (ferror (stdout))
-           clearerr (stdout);
-         if (termscript)
-           fwrite (conversion_buffer, 1, coding->produced, termscript);
+         fwrite (conversion_buffer, 1, coding->produced, tty->output);
+         if (ferror (tty->output))
+           clearerr (tty->output);
+         if (tty->termscript)
+           fwrite (conversion_buffer, 1, coding->produced, tty->termscript);
          UNBLOCK_INPUT;
        }
       len -= n;
@@ -1014,49 +740,49 @@
 
       /* Turn appearance modes off.  */
       turn_off_face (f, face_id);
-      turn_off_highlight ();
+      tty_turn_off_highlight (tty);
     }
 
-  cmcheckmagic ();
+  cmcheckmagic (tty);
 }
 
-void
-write_glyphs_with_face (string, len, face_id)
+static void
+tty_write_glyphs_with_face (f, string, len, face_id)
+     register struct frame *f;
      register struct glyph *string;
      register int len, face_id;
 {
-  struct frame *sf = XFRAME (selected_frame);
-  struct frame *f = updating_frame ? updating_frame : sf;
   unsigned char *conversion_buffer;
   struct coding_system *coding;
 
-  turn_off_insert ();
-  tty_hide_cursor ();
+  struct tty_display_info *tty = FRAME_TTY (f);
+
+  tty_turn_off_insert (tty);
+  tty_hide_cursor (tty);
 
   /* Don't dare write in last column of bottom line, if Auto-Wrap,
      since that would scroll the whole frame on some terminals.  */
 
-  if (AutoWrap
-      && curY + 1 == FRAME_LINES (sf)
-      && (curX + len) == FRAME_COLS (sf))
+  if (AutoWrap (tty)
+      && curY (tty) + 1 == FRAME_LINES (f)
+      && (curX (tty) + len) == FRAME_COLS (f))
     len --;
   if (len <= 0)
     return;
 
-  cmplus (len);
+  cmplus (tty, len);
 
   /* If terminal_coding does any conversion, use it, otherwise use
      safe_terminal_coding.  We can't use CODING_REQUIRE_ENCODING here
      because it always return 1 if the member src_multibyte is 1.  */
-  coding = (terminal_coding.common_flags & CODING_REQUIRE_ENCODING_MASK
-           ? &terminal_coding : &safe_terminal_coding);
+  coding = (FRAME_TERMINAL_CODING (f)->common_flags & 
CODING_REQUIRE_ENCODING_MASK
+           ? FRAME_TERMINAL_CODING (f) : &safe_terminal_coding);
   /* The mode bit CODING_MODE_LAST_BLOCK should be set to 1 only at
      the tail.  */
   coding->mode &= ~CODING_MODE_LAST_BLOCK;
 
-
   /* Turn appearance modes of the face.  */
-  highlight_if_desired ();
+  tty_highlight_if_desired (tty);
   turn_on_face (f, face_id);
 
   coding->mode |= CODING_MODE_LAST_BLOCK;
@@ -1064,59 +790,47 @@
   if (coding->produced > 0)
     {
       BLOCK_INPUT;
-      fwrite (conversion_buffer, 1, coding->produced, stdout);
-      if (ferror (stdout))
-       clearerr (stdout);
-      if (termscript)
-       fwrite (conversion_buffer, 1, coding->produced, termscript);
+      fwrite (conversion_buffer, 1, coding->produced, tty->output);
+      if (ferror (tty->output))
+       clearerr (tty->output);
+      if (tty->termscript)
+       fwrite (conversion_buffer, 1, coding->produced, tty->termscript);
       UNBLOCK_INPUT;
     }
 
   /* Turn appearance modes off.  */
   turn_off_face (f, face_id);
-  turn_off_highlight ();
+  tty_turn_off_highlight (tty);
 
-  cmcheckmagic ();
+  cmcheckmagic (tty);
 }
 
-/* If start is zero, insert blanks instead of a string at start */
 
-void
-insert_glyphs (start, len)
-     register struct glyph *start;
-     register int len;
+/* An implementation of insert_glyphs for termcap frames. */
+
+static void
+tty_insert_glyphs (struct frame *f, struct glyph *start, int len)
 {
   char *buf;
   struct glyph *glyph = NULL;
-  struct frame *f, *sf;
   unsigned char *conversion_buffer;
   unsigned char space[1];
   struct coding_system *coding;
 
-  if (len <= 0)
-    return;
-
-  if (insert_glyphs_hook)
-    {
-      (*insert_glyphs_hook) (start, len);
-      return;
-    }
-
-  sf = XFRAME (selected_frame);
-  f = updating_frame ? updating_frame : sf;
+  struct tty_display_info *tty = FRAME_TTY (f);
 
-  if (TS_ins_multi_chars)
+  if (tty->TS_ins_multi_chars)
     {
-      buf = tparam (TS_ins_multi_chars, 0, 0, len);
-      OUTPUT1 (buf);
+      buf = tparam (tty->TS_ins_multi_chars, 0, 0, len);
+      OUTPUT1 (tty, buf);
       xfree (buf);
       if (start)
-       write_glyphs (start, len);
+       write_glyphs (f, start, len);
       return;
     }
 
-  turn_on_insert ();
-  cmplus (len);
+  tty_turn_on_insert (tty);
+  cmplus (tty, len);
 
   if (! start)
     space[0] = SPACEGLYPH;
@@ -1124,15 +838,15 @@
   /* If terminal_coding does any conversion, use it, otherwise use
      safe_terminal_coding.  We can't use CODING_REQUIRE_ENCODING here
      because it always return 1 if the member src_multibyte is 1.  */
-  coding = (terminal_coding.common_flags & CODING_REQUIRE_ENCODING_MASK
-           ? &terminal_coding : &safe_terminal_coding);
+  coding = (FRAME_TERMINAL_CODING (f)->common_flags & 
CODING_REQUIRE_ENCODING_MASK
+           ? FRAME_TERMINAL_CODING (f) : &safe_terminal_coding);
   /* The mode bit CODING_MODE_LAST_BLOCK should be set to 1 only at
      the tail.  */
   coding->mode &= ~CODING_MODE_LAST_BLOCK;
 
   while (len-- > 0)
     {
-      OUTPUT1_IF (TS_ins_char);
+      OUTPUT1_IF (tty, tty->TS_ins_char);
       if (!start)
        {
          conversion_buffer = space;
@@ -1140,7 +854,7 @@
        }
       else
        {
-         highlight_if_desired ();
+         tty_highlight_if_desired (tty);
          turn_on_face (f, start->face_id);
          glyph = start;
          ++start;
@@ -1148,7 +862,7 @@
             occupies more than one column.  */
          while (len && CHAR_GLYPH_PADDING_P (*start))
            {
-             OUTPUT1_IF (TS_ins_char);
+             OUTPUT1_IF (tty, tty->TS_ins_char);
              start++, len--;
            }
 
@@ -1162,83 +876,71 @@
       if (coding->produced > 0)
        {
          BLOCK_INPUT;
-         fwrite (conversion_buffer, 1, coding->produced, stdout);
-         if (ferror (stdout))
-           clearerr (stdout);
-         if (termscript)
-           fwrite (conversion_buffer, 1, coding->produced, termscript);
+         fwrite (conversion_buffer, 1, coding->produced, tty->output);
+         if (ferror (tty->output))
+           clearerr (tty->output);
+         if (tty->termscript)
+           fwrite (conversion_buffer, 1, coding->produced, tty->termscript);
          UNBLOCK_INPUT;
        }
 
-      OUTPUT1_IF (TS_pad_inserted_char);
+      OUTPUT1_IF (tty, tty->TS_pad_inserted_char);
       if (start)
        {
          turn_off_face (f, glyph->face_id);
-         turn_off_highlight ();
+         tty_turn_off_highlight (tty);
        }
     }
 
-  cmcheckmagic ();
+  cmcheckmagic (tty);
 }
 
-void
-delete_glyphs (n)
-     register int n;
+/* An implementation of delete_glyphs for termcap frames. */
+
+static void
+tty_delete_glyphs (struct frame *f, int n)
 {
   char *buf;
   register int i;
 
-  if (delete_glyphs_hook && ! FRAME_TERMCAP_P (updating_frame))
-    {
-      (*delete_glyphs_hook) (n);
-      return;
-    }
+  struct tty_display_info *tty = FRAME_TTY (f);
 
-  if (delete_in_insert_mode)
+  if (tty->delete_in_insert_mode)
     {
-      turn_on_insert ();
+      tty_turn_on_insert (tty);
     }
   else
     {
-      turn_off_insert ();
-      OUTPUT_IF (TS_delete_mode);
+      tty_turn_off_insert (tty);
+      OUTPUT_IF (tty, tty->TS_delete_mode);
     }
 
-  if (TS_del_multi_chars)
+  if (tty->TS_del_multi_chars)
     {
-      buf = tparam (TS_del_multi_chars, 0, 0, n);
-      OUTPUT1 (buf);
+      buf = tparam (tty->TS_del_multi_chars, 0, 0, n);
+      OUTPUT1 (tty, buf);
       xfree (buf);
     }
   else
     for (i = 0; i < n; i++)
-      OUTPUT1 (TS_del_char);
-  if (!delete_in_insert_mode)
-    OUTPUT_IF (TS_end_delete_mode);
+      OUTPUT1 (tty, tty->TS_del_char);
+  if (!tty->delete_in_insert_mode)
+    OUTPUT_IF (tty, tty->TS_end_delete_mode);
 }
 
-/* Insert N lines at vpos VPOS.  If N is negative, delete -N lines.  */
+/* An implementation of ins_del_lines for termcap frames. */
 
-void
-ins_del_lines (vpos, n)
-     int vpos, n;
+static void
+tty_ins_del_lines (struct frame *f, int vpos, int n)
 {
-  char *multi = n > 0 ? TS_ins_multi_lines : TS_del_multi_lines;
-  char *single = n > 0 ? TS_ins_line : TS_del_line;
-  char *scroll = n > 0 ? TS_rev_scroll : TS_fwd_scroll;
-  struct frame *sf;
+  struct tty_display_info *tty = FRAME_TTY (f);
+  char *multi = n > 0 ? tty->TS_ins_multi_lines : tty->TS_del_multi_lines;
+  char *single = n > 0 ? tty->TS_ins_line : tty->TS_del_line;
+  char *scroll = n > 0 ? tty->TS_rev_scroll : tty->TS_fwd_scroll;
 
   register int i = n > 0 ? n : -n;
   register char *buf;
 
-  if (ins_del_lines_hook && ! FRAME_TERMCAP_P (updating_frame))
-    {
-      (*ins_del_lines_hook) (vpos, n);
-      return;
-    }
-
-  sf = XFRAME (selected_frame);
-
   /* If the lines below the insertion are being pushed
      into the end of the window, this is the same as clearing;
      and we know the lines are already clear, since the matching
@@ -1246,45 +948,49 @@
   /* If the lines below the deletion are blank lines coming
      out of the end of the window, don't bother,
      as there will be a matching inslines later that will flush them. */
-  if (scroll_region_ok && vpos + i >= specified_window)
+  if (FRAME_SCROLL_REGION_OK (f)
+      && vpos + i >= tty->specified_window)
     return;
-  if (!memory_below_frame && vpos + i >= FRAME_LINES (sf))
+  if (!FRAME_MEMORY_BELOW_FRAME (f)
+      && vpos + i >= FRAME_LINES (f))
     return;
 
   if (multi)
     {
-      raw_cursor_to (vpos, 0);
-      background_highlight ();
+      raw_cursor_to (f, vpos, 0);
+      tty_background_highlight (tty);
       buf = tparam (multi, 0, 0, i);
-      OUTPUT (buf);
+      OUTPUT (tty, buf);
       xfree (buf);
     }
   else if (single)
     {
-      raw_cursor_to (vpos, 0);
-      background_highlight ();
+      raw_cursor_to (f, vpos, 0);
+      tty_background_highlight (tty);
       while (--i >= 0)
-       OUTPUT (single);
-      if (TF_teleray)
-       curX = 0;
+        OUTPUT (tty, single);
+      if (tty->TF_teleray)
+        curX (tty) = 0;
     }
   else
     {
-      set_scroll_region (vpos, specified_window);
+      tty_set_scroll_region (f, vpos, tty->specified_window);
       if (n < 0)
-       raw_cursor_to (specified_window - 1, 0);
+        raw_cursor_to (f, tty->specified_window - 1, 0);
       else
-       raw_cursor_to (vpos, 0);
-      background_highlight ();
+        raw_cursor_to (f, vpos, 0);
+      tty_background_highlight (tty);
       while (--i >= 0)
-       OUTPUTL (scroll, specified_window - vpos);
-      set_scroll_region (0, specified_window);
+        OUTPUTL (tty, scroll, tty->specified_window - vpos);
+      tty_set_scroll_region (f, 0, tty->specified_window);
     }
 
-  if (!scroll_region_ok && memory_below_frame && n < 0)
+  if (!FRAME_SCROLL_REGION_OK (f)
+      && FRAME_MEMORY_BELOW_FRAME (f)
+      && n < 0)
     {
-      cursor_to (FRAME_LINES (sf) + n, 0);
-      clear_to_end ();
+      cursor_to (f, FRAME_LINES (f) + n, 0);
+      clear_to_end (f);
     }
 }
 
@@ -1292,8 +998,7 @@
    not counting any line-dependent padding.  */
 
 int
-string_cost (str)
-     char *str;
+string_cost (char *str)
 {
   cost = 0;
   if (str)
@@ -1305,8 +1010,7 @@
    counting any line-dependent padding at one line.  */
 
 static int
-string_cost_one_line (str)
-     char *str;
+string_cost_one_line (char *str)
 {
   cost = 0;
   if (str)
@@ -1318,8 +1022,7 @@
    in tenths of characters.  */
 
 int
-per_line_cost (str)
-     register char *str;
+per_line_cost (char *str)
 {
   cost = 0;
   if (str)
@@ -1342,26 +1045,26 @@
 
 /* ARGSUSED */
 static void
-calculate_ins_del_char_costs (frame)
-     FRAME_PTR frame;
+calculate_ins_del_char_costs (struct frame *f)
 {
+  struct tty_display_info *tty = FRAME_TTY (f);
   int ins_startup_cost, del_startup_cost;
   int ins_cost_per_char, del_cost_per_char;
   register int i;
   register int *p;
 
-  if (TS_ins_multi_chars)
+  if (tty->TS_ins_multi_chars)
     {
       ins_cost_per_char = 0;
-      ins_startup_cost = string_cost_one_line (TS_ins_multi_chars);
+      ins_startup_cost = string_cost_one_line (tty->TS_ins_multi_chars);
     }
-  else if (TS_ins_char || TS_pad_inserted_char
-          || (TS_insert_mode && TS_end_insert_mode))
+  else if (tty->TS_ins_char || tty->TS_pad_inserted_char
+          || (tty->TS_insert_mode && tty->TS_end_insert_mode))
     {
-      ins_startup_cost = (30 * (string_cost (TS_insert_mode)
-                               + string_cost (TS_end_insert_mode))) / 100;
-      ins_cost_per_char = (string_cost_one_line (TS_ins_char)
-                          + string_cost_one_line (TS_pad_inserted_char));
+      ins_startup_cost = (30 * (string_cost (tty->TS_insert_mode)
+                               + string_cost (tty->TS_end_insert_mode))) / 100;
+      ins_cost_per_char = (string_cost_one_line (tty->TS_ins_char)
+                          + string_cost_one_line (tty->TS_pad_inserted_char));
     }
   else
     {
@@ -1369,18 +1072,18 @@
       ins_cost_per_char = 0;
     }
 
-  if (TS_del_multi_chars)
+  if (tty->TS_del_multi_chars)
     {
       del_cost_per_char = 0;
-      del_startup_cost = string_cost_one_line (TS_del_multi_chars);
+      del_startup_cost = string_cost_one_line (tty->TS_del_multi_chars);
     }
-  else if (TS_del_char)
+  else if (tty->TS_del_char)
     {
-      del_startup_cost = (string_cost (TS_delete_mode)
-                         + string_cost (TS_end_delete_mode));
-      if (delete_in_insert_mode)
+      del_startup_cost = (string_cost (tty->TS_delete_mode)
+                         + string_cost (tty->TS_end_delete_mode));
+      if (tty->delete_in_insert_mode)
        del_startup_cost /= 2;
-      del_cost_per_char = string_cost_one_line (TS_del_char);
+      del_cost_per_char = string_cost_one_line (tty->TS_del_char);
     }
   else
     {
@@ -1389,33 +1092,38 @@
     }
 
   /* Delete costs are at negative offsets */
-  p = &char_ins_del_cost (frame)[0];
-  for (i = FRAME_COLS (frame); --i >= 0;)
+  p = &char_ins_del_cost (f)[0];
+  for (i = FRAME_COLS (f); --i >= 0;)
     *--p = (del_startup_cost += del_cost_per_char);
 
   /* Doing nothing is free */
-  p = &char_ins_del_cost (frame)[0];
+  p = &char_ins_del_cost (f)[0];
   *p++ = 0;
 
   /* Insert costs are at positive offsets */
-  for (i = FRAME_COLS (frame); --i >= 0;)
+  for (i = FRAME_COLS (f); --i >= 0;)
     *p++ = (ins_startup_cost += ins_cost_per_char);
 }
 
 void
-calculate_costs (frame)
-     FRAME_PTR frame;
+calculate_costs (struct frame *frame)
 {
-  register char *f = (TS_set_scroll_region
-                     ? TS_set_scroll_region
-                     : TS_set_scroll_region_1);
-
   FRAME_COST_BAUD_RATE (frame) = baud_rate;
 
-  scroll_region_cost = string_cost (f);
+  if (FRAME_TERMCAP_P (frame))
+    {
+      struct tty_display_info *tty = FRAME_TTY (frame);
+      register char *f = (tty->TS_set_scroll_region
+                          ? tty->TS_set_scroll_region
+                          : tty->TS_set_scroll_region_1);
+
+      FRAME_SCROLL_REGION_COST (frame) = string_cost (f);
+
+      tty->costs_set = 1;
 
-  /* These variables are only used for terminal stuff.  They are allocated
-     once for the terminal frame of X-windows emacs, but not used afterwards.
+      /* These variables are only used for terminal stuff.  They are
+         allocated once for the terminal frame of X-windows emacs, but not
+         used afterwards.
 
      char_ins_del_vector (i.e., char_ins_del_cost) isn't used because
      X turns off char_ins_del_ok. */
@@ -1423,8 +1131,6 @@
   max_frame_lines = max (max_frame_lines, FRAME_LINES (frame));
   max_frame_cols = max (max_frame_cols, FRAME_COLS (frame));
 
-  costs_set = 1;
-
   if (char_ins_del_vector != 0)
     char_ins_del_vector
       = (int *) xrealloc (char_ins_del_vector,
@@ -1438,26 +1144,28 @@
   bzero (char_ins_del_vector, (sizeof (int)
                               + 2 * max_frame_cols * sizeof (int)));
 
-  if (f && (!TS_ins_line && !TS_del_line))
+
+      if (f && (!tty->TS_ins_line && !tty->TS_del_line))
     do_line_insertion_deletion_costs (frame,
-                                     TS_rev_scroll, TS_ins_multi_lines,
-                                     TS_fwd_scroll, TS_del_multi_lines,
+                                          tty->TS_rev_scroll, 
tty->TS_ins_multi_lines,
+                                          tty->TS_fwd_scroll, 
tty->TS_del_multi_lines,
                                      f, f, 1);
   else
     do_line_insertion_deletion_costs (frame,
-                                     TS_ins_line, TS_ins_multi_lines,
-                                     TS_del_line, TS_del_multi_lines,
+                                          tty->TS_ins_line, 
tty->TS_ins_multi_lines,
+                                          tty->TS_del_line, 
tty->TS_del_multi_lines,
                                      0, 0, 1);
 
   calculate_ins_del_char_costs (frame);
 
   /* Don't use TS_repeat if its padding is worse than sending the chars */
-  if (TS_repeat && per_line_cost (TS_repeat) * baud_rate < 9000)
-    RPov = string_cost (TS_repeat);
+      if (tty->TS_repeat && per_line_cost (tty->TS_repeat) * baud_rate < 9000)
+        tty->RPov = string_cost (tty->TS_repeat);
   else
-    RPov = FRAME_COLS (frame) * 2;
+        tty->RPov = FRAME_COLS (frame) * 2;
 
-  cmcostinit ();               /* set up cursor motion costs */
+      cmcostinit (FRAME_TTY (frame)); /* set up cursor motion costs */
+    }
 }
 
 struct fkey_table {
@@ -1567,16 +1275,18 @@
   {"!3", "S-undo"}       /*shifted undo key*/
   };
 
-static char **term_get_fkeys_arg;
+static char **term_get_fkeys_address;
+static KBOARD *term_get_fkeys_kboard;
 static Lisp_Object term_get_fkeys_1 ();
 
 /* Find the escape codes sent by the function keys for Vfunction_key_map.
    This function scans the termcap function key sequence entries, and
    adds entries to Vfunction_key_map for each function key it finds.  */
 
-void
-term_get_fkeys (address)
+static void
+term_get_fkeys (address, kboard)
      char **address;
+     KBOARD *kboard;
 {
   /* We run the body of the function (term_get_fkeys_1) and ignore all Lisp
      errors during the call.  The only errors should be from Fdefine_key
@@ -1587,7 +1297,8 @@
      refusing to run at all on such a terminal.  */
 
   extern Lisp_Object Fidentity ();
-  term_get_fkeys_arg = address;
+  term_get_fkeys_address = address;
+  term_get_fkeys_kboard = kboard;
   internal_condition_case (term_get_fkeys_1, Qerror, Fidentity);
 }
 
@@ -1596,17 +1307,18 @@
 {
   int i;
 
-  char **address = term_get_fkeys_arg;
+  char **address = term_get_fkeys_address;
+  KBOARD *kboard = term_get_fkeys_kboard;
 
   /* This can happen if CANNOT_DUMP or with strange options.  */
   if (!initialized)
-    Vfunction_key_map = Fmake_sparse_keymap (Qnil);
+    kboard->Vlocal_function_key_map = Fmake_sparse_keymap (Qnil);
 
   for (i = 0; i < (sizeof (keys)/sizeof (keys[0])); i++)
     {
       char *sequence = tgetstr (keys[i].cap, address);
       if (sequence)
-       Fdefine_key (Vfunction_key_map, build_string (sequence),
+       Fdefine_key (kboard->Vlocal_function_key_map, build_string (sequence),
                     Fmake_vector (make_number (1),
                                   intern (keys[i].name)));
     }
@@ -1626,13 +1338,13 @@
        if (k0)
          /* Define f0 first, so that f10 takes precedence in case the
             key sequences happens to be the same.  */
-         Fdefine_key (Vfunction_key_map, build_string (k0),
+         Fdefine_key (kboard->Vlocal_function_key_map, build_string (k0),
                       Fmake_vector (make_number (1), intern ("f0")));
-       Fdefine_key (Vfunction_key_map, build_string (k_semi),
+       Fdefine_key (kboard->Vlocal_function_key_map, build_string (k_semi),
                     Fmake_vector (make_number (1), intern ("f10")));
       }
     else if (k0)
-      Fdefine_key (Vfunction_key_map, build_string (k0),
+      Fdefine_key (kboard->Vlocal_function_key_map, build_string (k0),
                   Fmake_vector (make_number (1), intern (k0_name)));
   }
 
@@ -1655,7 +1367,7 @@
          if (sequence)
            {
              sprintf (fkey, "f%d", i);
-             Fdefine_key (Vfunction_key_map, build_string (sequence),
+             Fdefine_key (kboard->Vlocal_function_key_map, build_string 
(sequence),
                           Fmake_vector (make_number (1),
                                         intern (fkey)));
            }
@@ -1672,7 +1384,7 @@
        {                                                               \
          char *sequence = tgetstr (cap2, address);                     \
          if (sequence)                                                 \
-           Fdefine_key (Vfunction_key_map, build_string (sequence),    \
+           Fdefine_key (kboard->Vlocal_function_key_map, build_string 
(sequence), \
                         Fmake_vector (make_number (1), \
                                       intern (sym)));  \
        }
@@ -2030,9 +1742,9 @@
    from them.  Some display attributes may not be used together with
    color; the termcap capability `NC' specifies which ones.  */
 
-#define MAY_USE_WITH_COLORS_P(ATTR)            \
-     (TN_max_colors > 0                                \
-      ? (TN_no_color_video & (ATTR)) == 0      \
+#define MAY_USE_WITH_COLORS_P(tty, ATTR)                \
+  (tty->TN_max_colors > 0                              \
+   ? (tty->TN_no_color_video & (ATTR)) == 0             \
       : 1)
 
 /* Turn appearances of face FACE_ID on tty frame F on.
@@ -2046,12 +1758,13 @@
   struct face *face = FACE_FROM_ID (f, face_id);
   long fg = face->foreground;
   long bg = face->background;
+  struct tty_display_info *tty = FRAME_TTY (f);
 
   /* Do this first because TS_end_standout_mode may be the same
      as TS_exit_attribute_mode, which turns all appearances off. */
-  if (MAY_USE_WITH_COLORS_P (NC_REVERSE))
+  if (MAY_USE_WITH_COLORS_P (tty, NC_REVERSE))
     {
-      if (TN_max_colors > 0)
+      if (tty->TN_max_colors > 0)
        {
          if (fg >= 0 && bg >= 0)
            {
@@ -2065,13 +1778,13 @@
            {
              if (fg == FACE_TTY_DEFAULT_FG_COLOR
                  || bg == FACE_TTY_DEFAULT_BG_COLOR)
-               toggle_highlight ();
+               tty_toggle_highlight (tty);
            }
          else
            {
              if (fg == FACE_TTY_DEFAULT_BG_COLOR
                  || bg == FACE_TTY_DEFAULT_FG_COLOR)
-               toggle_highlight ();
+               tty_toggle_highlight (tty);
            }
        }
       else
@@ -2082,55 +1795,55 @@
            {
              if (fg == FACE_TTY_DEFAULT_FG_COLOR
                  || bg == FACE_TTY_DEFAULT_BG_COLOR)
-               toggle_highlight ();
+               tty_toggle_highlight (tty);
            }
          else
            {
              if (fg == FACE_TTY_DEFAULT_BG_COLOR
                  || bg == FACE_TTY_DEFAULT_FG_COLOR)
-               toggle_highlight ();
+               tty_toggle_highlight (tty);
            }
        }
     }
 
   if (face->tty_bold_p)
     {
-      if (MAY_USE_WITH_COLORS_P (NC_BOLD))
-       OUTPUT1_IF (TS_enter_bold_mode);
+      if (MAY_USE_WITH_COLORS_P (tty, NC_BOLD))
+       OUTPUT1_IF (tty, tty->TS_enter_bold_mode);
     }
   else if (face->tty_dim_p)
-    if (MAY_USE_WITH_COLORS_P (NC_DIM))
-      OUTPUT1_IF (TS_enter_dim_mode);
+    if (MAY_USE_WITH_COLORS_P (tty, NC_DIM))
+      OUTPUT1_IF (tty, tty->TS_enter_dim_mode);
 
   /* Alternate charset and blinking not yet used.  */
   if (face->tty_alt_charset_p
-      && MAY_USE_WITH_COLORS_P (NC_ALT_CHARSET))
-    OUTPUT1_IF (TS_enter_alt_charset_mode);
+      && MAY_USE_WITH_COLORS_P (tty, NC_ALT_CHARSET))
+    OUTPUT1_IF (tty, tty->TS_enter_alt_charset_mode);
 
   if (face->tty_blinking_p
-      && MAY_USE_WITH_COLORS_P (NC_BLINK))
-    OUTPUT1_IF (TS_enter_blink_mode);
+      && MAY_USE_WITH_COLORS_P (tty, NC_BLINK))
+    OUTPUT1_IF (tty, tty->TS_enter_blink_mode);
 
-  if (face->tty_underline_p && MAY_USE_WITH_COLORS_P (NC_UNDERLINE))
-    OUTPUT1_IF (TS_enter_underline_mode);
+  if (face->tty_underline_p && MAY_USE_WITH_COLORS_P (tty, NC_UNDERLINE))
+    OUTPUT1_IF (tty, tty->TS_enter_underline_mode);
 
-  if (TN_max_colors > 0)
+  if (tty->TN_max_colors > 0)
     {
       char *ts, *p;
 
-      ts = standout_mode ? TS_set_background : TS_set_foreground;
+      ts = tty->standout_mode ? tty->TS_set_background : 
tty->TS_set_foreground;
       if (fg >= 0 && ts)
        {
          p = tparam (ts, NULL, 0, (int) fg);
-         OUTPUT (p);
+         OUTPUT (tty, p);
          xfree (p);
        }
 
-      ts = standout_mode ? TS_set_foreground : TS_set_background;
+      ts = tty->standout_mode ? tty->TS_set_foreground : 
tty->TS_set_background;
       if (bg >= 0 && ts)
        {
          p = tparam (ts, NULL, 0, (int) bg);
-         OUTPUT (p);
+         OUTPUT (tty, p);
          xfree (p);
        }
     }
@@ -2145,10 +1858,11 @@
      int face_id;
 {
   struct face *face = FACE_FROM_ID (f, face_id);
+  struct tty_display_info *tty = FRAME_TTY (f);
 
   xassert (face != NULL);
 
-  if (TS_exit_attribute_mode)
+  if (tty->TS_exit_attribute_mode)
     {
       /* Capability "me" will turn off appearance modes double-bright,
         half-bright, reverse-video, standout, underline.  It may or
@@ -2160,32 +1874,32 @@
          || face->tty_blinking_p
          || face->tty_underline_p)
        {
-         OUTPUT1_IF (TS_exit_attribute_mode);
-         if (strcmp (TS_exit_attribute_mode, TS_end_standout_mode) == 0)
-           standout_mode = 0;
+         OUTPUT1_IF (tty, tty->TS_exit_attribute_mode);
+         if (strcmp (tty->TS_exit_attribute_mode, tty->TS_end_standout_mode) 
== 0)
+           tty->standout_mode = 0;
        }
 
       if (face->tty_alt_charset_p)
-       OUTPUT_IF (TS_exit_alt_charset_mode);
+       OUTPUT_IF (tty, tty->TS_exit_alt_charset_mode);
     }
   else
     {
       /* If we don't have "me" we can only have those appearances
         that have exit sequences defined.  */
       if (face->tty_alt_charset_p)
-       OUTPUT_IF (TS_exit_alt_charset_mode);
+       OUTPUT_IF (tty, tty->TS_exit_alt_charset_mode);
 
       if (face->tty_underline_p)
-       OUTPUT_IF (TS_exit_underline_mode);
+       OUTPUT_IF (tty, tty->TS_exit_underline_mode);
     }
 
   /* Switch back to default colors.  */
-  if (TN_max_colors > 0
+  if (tty->TN_max_colors > 0
       && ((face->foreground != FACE_TTY_DEFAULT_COLOR
           && face->foreground != FACE_TTY_DEFAULT_FG_COLOR)
          || (face->background != FACE_TTY_DEFAULT_COLOR
              && face->background != FACE_TTY_DEFAULT_BG_COLOR)))
-    OUTPUT1_IF (TS_orig_pair);
+    OUTPUT1_IF (tty, tty->TS_orig_pair);
 }
 
 
@@ -2194,46 +1908,61 @@
    colors FG and BG.  */
 
 int
-tty_capable_p (f, caps, fg, bg)
-     struct frame *f;
+tty_capable_p (tty, caps, fg, bg)
+     struct tty_display_info *tty;
      unsigned caps;
      unsigned long fg, bg;
 {
-#define TTY_CAPABLE_P_TRY(cap, TS, NC_bit)                             \
-  if ((caps & (cap)) && (!(TS) || !MAY_USE_WITH_COLORS_P(NC_bit)))     \
+#define TTY_CAPABLE_P_TRY(tty, cap, TS, NC_bit)                                
\
+  if ((caps & (cap)) && (!(TS) || !MAY_USE_WITH_COLORS_P(tty, NC_bit)))        
\
     return 0;
 
-  TTY_CAPABLE_P_TRY (TTY_CAP_INVERSE,  TS_standout_mode,        NC_REVERSE);
-  TTY_CAPABLE_P_TRY (TTY_CAP_UNDERLINE, TS_enter_underline_mode, NC_UNDERLINE);
-  TTY_CAPABLE_P_TRY (TTY_CAP_BOLD,     TS_enter_bold_mode,      NC_BOLD);
-  TTY_CAPABLE_P_TRY (TTY_CAP_DIM,      TS_enter_dim_mode,       NC_DIM);
-  TTY_CAPABLE_P_TRY (TTY_CAP_BLINK,    TS_enter_blink_mode,     NC_BLINK);
-  TTY_CAPABLE_P_TRY (TTY_CAP_ALT_CHARSET, TS_enter_alt_charset_mode, 
NC_ALT_CHARSET);
+  TTY_CAPABLE_P_TRY (tty, TTY_CAP_INVERSE,     tty->TS_standout_mode,          
NC_REVERSE);
+  TTY_CAPABLE_P_TRY (tty, TTY_CAP_UNDERLINE,   tty->TS_enter_underline_mode,   
NC_UNDERLINE);
+  TTY_CAPABLE_P_TRY (tty, TTY_CAP_BOLD,        tty->TS_enter_bold_mode,        
NC_BOLD);
+  TTY_CAPABLE_P_TRY (tty, TTY_CAP_DIM,                 tty->TS_enter_dim_mode, 
        NC_DIM);
+  TTY_CAPABLE_P_TRY (tty, TTY_CAP_BLINK,       tty->TS_enter_blink_mode,       
NC_BLINK);
+  TTY_CAPABLE_P_TRY (tty, TTY_CAP_ALT_CHARSET,         
tty->TS_enter_alt_charset_mode, NC_ALT_CHARSET);
 
   /* We can do it!  */
   return 1;
 }
 
-
 /* Return non-zero if the terminal is capable to display colors.  */
 
 DEFUN ("tty-display-color-p", Ftty_display_color_p, Stty_display_color_p,
        0, 1, 0,
-       doc: /* Return non-nil if TTY can display colors on DISPLAY.  */)
-     (display)
-     Lisp_Object display;
+       doc: /* Return non-nil if the tty device TERMINAL can display colors.
+
+TERMINAL can be a terminal id, a frame or nil (meaning the selected
+frame's terminal).  This function always returns nil if TERMINAL
+is not on a tty device.  */)
+     (terminal)
+     Lisp_Object terminal;
 {
-  return TN_max_colors > 0 ? Qt : Qnil;
+  struct terminal *t = get_tty_terminal (terminal, 0);
+  if (!t)
+    return Qnil;
+  else
+    return t->display_info.tty->TN_max_colors > 0 ? Qt : Qnil;
 }
 
 /* Return the number of supported colors.  */
 DEFUN ("tty-display-color-cells", Ftty_display_color_cells,
        Stty_display_color_cells, 0, 1, 0,
-       doc: /* Return the number of colors supported by TTY on DISPLAY.  */)
-     (display)
-     Lisp_Object display;
-{
-  return make_number (TN_max_colors);
+       doc: /* Return the number of colors supported by the tty device 
TERMINAL.
+
+TERMINAL can be a terminal id, a frame or nil (meaning the selected
+frame's terminal).  This function always returns 0 if TERMINAL
+is not on a tty device.  */)
+     (terminal)
+     Lisp_Object terminal;
+{
+  struct terminal *t = get_tty_terminal (terminal, 0);
+  if (!t)
+    return make_number (0);
+  else
+    return make_number (t->display_info.tty->TN_max_colors);
 }
 
 #ifndef WINDOWSNT
@@ -2251,48 +1980,46 @@
 /* Save or restore the default color-related capabilities of this
    terminal.  */
 static void
-tty_default_color_capabilities (save)
-     int save;
+tty_default_color_capabilities (struct tty_display_info *tty, int save)
 {
 
   if (save)
     {
       if (default_orig_pair)
        xfree (default_orig_pair);
-      default_orig_pair = TS_orig_pair ? xstrdup (TS_orig_pair) : NULL;
+      default_orig_pair = tty->TS_orig_pair ? xstrdup (tty->TS_orig_pair) : 
NULL;
 
       if (default_set_foreground)
        xfree (default_set_foreground);
-      default_set_foreground = TS_set_foreground ? xstrdup (TS_set_foreground)
+      default_set_foreground = tty->TS_set_foreground ? xstrdup 
(tty->TS_set_foreground)
                               : NULL;
 
       if (default_set_background)
        xfree (default_set_background);
-      default_set_background = TS_set_background ? xstrdup (TS_set_background)
+      default_set_background = tty->TS_set_background ? xstrdup 
(tty->TS_set_background)
                               : NULL;
 
-      default_max_colors = TN_max_colors;
-      default_max_pairs = TN_max_pairs;
-      default_no_color_video = TN_no_color_video;
+      default_max_colors = tty->TN_max_colors;
+      default_max_pairs = tty->TN_max_pairs;
+      default_no_color_video = tty->TN_no_color_video;
     }
   else
     {
-      TS_orig_pair = default_orig_pair;
-      TS_set_foreground = default_set_foreground;
-      TS_set_background = default_set_background;
-      TN_max_colors = default_max_colors;
-      TN_max_pairs = default_max_pairs;
-      TN_no_color_video = default_no_color_video;
+      tty->TS_orig_pair = default_orig_pair;
+      tty->TS_set_foreground = default_set_foreground;
+      tty->TS_set_background = default_set_background;
+      tty->TN_max_colors = default_max_colors;
+      tty->TN_max_pairs = default_max_pairs;
+      tty->TN_no_color_video = default_no_color_video;
     }
 }
 
 /* Setup one of the standard tty color schemes according to MODE.
    MODE's value is generally the number of colors which we want to
    support; zero means set up for the default capabilities, the ones
-   we saw at term_init time; -1 means turn off color support.  */
-void
-tty_setup_colors (mode)
-     int mode;
+   we saw at init_tty time; -1 means turn off color support.  */
+static void
+tty_setup_colors (struct tty_display_info *tty, int mode)
 {
   /* Canonicalize all negative values of MODE.  */
   if (mode < -1)
@@ -2301,27 +2028,27 @@
   switch (mode)
     {
       case -1:  /* no colors at all */
-       TN_max_colors = 0;
-       TN_max_pairs = 0;
-       TN_no_color_video = 0;
-       TS_set_foreground = TS_set_background = TS_orig_pair = NULL;
+       tty->TN_max_colors = 0;
+       tty->TN_max_pairs = 0;
+       tty->TN_no_color_video = 0;
+       tty->TS_set_foreground = tty->TS_set_background = tty->TS_orig_pair = 
NULL;
        break;
       case 0:   /* default colors, if any */
       default:
-       tty_default_color_capabilities (0);
+       tty_default_color_capabilities (tty, 0);
        break;
       case 8:  /* 8 standard ANSI colors */
-       TS_orig_pair = "\033[0m";
+       tty->TS_orig_pair = "\033[0m";
 #ifdef TERMINFO
-       TS_set_foreground = "\033[3%p1%dm";
-       TS_set_background = "\033[4%p1%dm";
+       tty->TS_set_foreground = "\033[3%p1%dm";
+       tty->TS_set_background = "\033[4%p1%dm";
 #else
-       TS_set_foreground = "\033[3%dm";
-       TS_set_background = "\033[4%dm";
+       tty->TS_set_foreground = "\033[3%dm";
+       tty->TS_set_background = "\033[4%dm";
 #endif
-       TN_max_colors = 8;
-       TN_max_pairs = 64;
-       TN_no_color_video = 0;
+       tty->TN_max_colors = 8;
+       tty->TN_max_pairs = 64;
+       tty->TN_no_color_video = 0;
        break;
     }
 }
@@ -2372,7 +2099,7 @@
 
   if (mode != old_mode)
     {
-      tty_setup_colors (mode);
+      tty_setup_colors (FRAME_TTY (f), mode);
       /*  This recomputes all the faces given the new color
          definitions.  */
       call0 (intern ("tty-set-up-initial-frame-faces"));
@@ -2383,6 +2110,241 @@
 #endif /* !WINDOWSNT */
 
 
+
+/* Return the tty display object specified by TERMINAL. */
+
+struct terminal *
+get_tty_terminal (Lisp_Object terminal, int throw)
+{
+  struct terminal *t = get_terminal (terminal, throw);
+
+  if (t && t->type == output_initial)
+    return NULL;
+
+  if (t && t->type != output_termcap)
+    {
+      if (throw)
+        error ("Device %d is not a termcap terminal device", t->id);
+      else
+        return NULL;
+    }
+
+  return t;
+}
+
+/* Return an active termcap device that uses the tty device with the
+   given name.
+
+   This function ignores suspended devices.
+
+   Returns NULL if the named terminal device is not opened.  */
+ 
+struct terminal *
+get_named_tty (name)
+     char *name;
+{
+  struct terminal *t;
+
+  if (!name)
+    abort ();
+
+  for (t = terminal_list; t; t = t->next_terminal)
+    {
+      if (t->type == output_termcap
+          && !strcmp (t->display_info.tty->name, name)
+          && TERMINAL_ACTIVE_P (t))
+        return t;
+    }
+
+  return 0;
+}
+
+
+DEFUN ("tty-type", Ftty_type, Stty_type, 0, 1, 0,
+       doc: /* Return the type of the tty device that TERMINAL uses.
+Returns nil if TERMINAL is not on a tty device.
+
+TERMINAL can be a terminal id, a frame or nil (meaning the selected
+frame's terminal).  */)
+     (terminal)
+     Lisp_Object terminal;
+{
+  struct terminal *t = get_terminal (terminal, 1);
+
+  if (t->type != output_termcap)
+    return Qnil;
+
+  if (t->display_info.tty->type)
+    return build_string (t->display_info.tty->type);
+  else
+    return Qnil;
+}
+
+DEFUN ("controlling-tty-p", Fcontrolling_tty_p, Scontrolling_tty_p, 0, 1, 0,
+       doc: /* Return non-nil if TERMINAL is on the controlling tty of the 
Emacs process.
+
+TERMINAL can be a terminal id, a frame or nil (meaning the selected
+frame's terminal).  This function always returns nil if TERMINAL
+is not on a tty device.  */)
+     (terminal)
+     Lisp_Object terminal;
+{
+  struct terminal *t = get_terminal (terminal, 1);
+
+  if (t->type != output_termcap || strcmp (t->display_info.tty->name, 
"/dev/tty"))
+    return Qnil;
+  else
+    return Qt;
+}
+
+DEFUN ("tty-no-underline", Ftty_no_underline, Stty_no_underline, 0, 1, 0,
+       doc: /* Declare that the tty used by TERMINAL does not handle 
underlining.
+This is used to override the terminfo data, for certain terminals that
+do not really do underlining, but say that they do.  This function has
+no effect if used on a non-tty terminal.
+
+TERMINAL can be a terminal id, a frame or nil (meaning the selected
+frame's terminal).  This function always returns nil if TERMINAL
+is not on a tty device.  */)
+  (terminal)
+     Lisp_Object terminal;
+{
+  struct terminal *t = get_terminal (terminal, 1);
+
+  if (t->type == output_termcap)
+    t->display_info.tty->TS_enter_underline_mode = 0;
+  return Qnil;
+}
+
+
+
+DEFUN ("suspend-tty", Fsuspend_tty, Ssuspend_tty, 0, 1, 0,
+       doc: /* Suspend the terminal device TTY.
+
+The device is restored to its default state, and Emacs ceases all
+access to the tty device.  Frames that use the device are not deleted,
+but input is not read from them and if they change, their display is
+not updated.
+
+TTY may be a terminal id, a frame, or nil for the terminal device of
+the currently selected frame.
+
+This function runs `suspend-tty-functions' after suspending the
+device.  The functions are run with one arg, the id of the suspended
+terminal device.
+
+`suspend-tty' does nothing if it is called on a device that is already
+suspended.
+
+A suspended tty may be resumed by calling `resume-tty' on it.  */)
+     (tty)
+     Lisp_Object tty;
+{
+  struct terminal *t = get_tty_terminal (tty, 1);
+  FILE *f;
+  
+  if (!t)
+    error ("Unknown tty device");
+
+  f = t->display_info.tty->input;
+  
+  if (f)
+    {
+      reset_sys_modes (t->display_info.tty);
+
+      delete_keyboard_wait_descriptor (fileno (f));
+      
+      fclose (f);
+      if (f != t->display_info.tty->output)
+        fclose (t->display_info.tty->output);
+      
+      t->display_info.tty->input = 0;
+      t->display_info.tty->output = 0;
+
+      if (FRAMEP (t->display_info.tty->top_frame))
+        FRAME_SET_VISIBLE (XFRAME (t->display_info.tty->top_frame), 0);
+      
+      /* Run `suspend-tty-functions'.  */
+      if (!NILP (Vrun_hooks))
+        {
+          Lisp_Object args[2];
+          args[0] = intern ("suspend-tty-functions");
+          args[1] = make_number (t->id);
+          Frun_hook_with_args (2, args);
+        }
+    }
+
+  /* Clear display hooks to prevent further output.  */
+  clear_tty_hooks (t);
+
+  return Qnil;
+}
+
+DEFUN ("resume-tty", Fresume_tty, Sresume_tty, 0, 1, 0,
+       doc: /* Resume the previously suspended terminal device TTY.
+The terminal is opened and reinitialized.  Frames that are on the
+suspended terminal are revived.
+
+It is an error to resume a terminal while another terminal is active
+on the same device.
+
+This function runs `resume-tty-functions' after resuming the terminal.
+The functions are run with one arg, the id of the resumed terminal
+device.
+
+`resume-tty' does nothing if it is called on a device that is not
+suspended.
+
+TTY may be a terminal id, a frame, or nil for the terminal device of
+the currently selected frame. */)
+     (tty)
+     Lisp_Object tty;
+{
+  struct terminal *t = get_tty_terminal (tty, 1);
+  int fd;
+
+  if (!t)
+    error ("Unknown tty device");
+
+  if (!t->display_info.tty->input)
+    {
+      if (get_named_tty (t->display_info.tty->name))
+        error ("Cannot resume display while another display is active on the 
same device");
+
+      fd = emacs_open (t->display_info.tty->name, O_RDWR | O_NOCTTY, 0);
+
+      if (fd == -1)
+        error ("Can not reopen tty device %s: %s", t->display_info.tty->name, 
strerror (errno));
+
+      if (strcmp (t->display_info.tty->name, "/dev/tty"))
+        dissociate_if_controlling_tty (fd);
+      
+      t->display_info.tty->output = fdopen (fd, "w+");
+      t->display_info.tty->input = t->display_info.tty->output;
+    
+      add_keyboard_wait_descriptor (fd);
+
+      if (FRAMEP (t->display_info.tty->top_frame))
+        FRAME_SET_VISIBLE (XFRAME (t->display_info.tty->top_frame), 1);
+
+      init_sys_modes (t->display_info.tty);
+
+      /* Run `suspend-tty-functions'.  */
+      if (!NILP (Vrun_hooks))
+        {
+          Lisp_Object args[2];
+          args[0] = intern ("resume-tty-functions");
+          args[1] = make_number (t->id);
+          Frun_hook_with_args (2, args);
+        }
+    }
+
+  set_tty_hooks (t);
+
+  return Qnil;
+}
+
+
 /***********************************************************************
                               Mouse
  ***********************************************************************/
@@ -2409,6 +2371,9 @@
   int save_x, save_y;
   int i;
 
+  struct frame *f = XFRAME (w->frame);
+  struct tty_display_info *tty = FRAME_TTY (f);
+
   if (/* If window is in the process of being destroyed, don't bother
         to do anything.  */
       w->current_matrix != NULL
@@ -2421,8 +2386,8 @@
         the highlight region.  */
       
       /* Save current cursor co-ordinates */
-      save_y = curY;
-      save_x = curX;
+      save_y = curY (tty);
+      save_x = curX (tty);
 
       /* Note that mouse_face_beg_row etc. are window relative.  */
       for (i = mouse_face_beg_row; i <= mouse_face_end_row; i++)
@@ -2464,17 +2429,17 @@
          pos_x = row->used[LEFT_MARGIN_AREA] + start_hpos
            + WINDOW_LEFT_EDGE_X (w);
          
-         cursor_to (pos_y, pos_x);
+         cursor_to (f, pos_y, pos_x);
 
          if (draw == DRAW_MOUSE_FACE)
            {
-             write_glyphs_with_face (row->glyphs[TEXT_AREA] + start_hpos,
+             tty_write_glyphs_with_face (f, row->glyphs[TEXT_AREA] + 
start_hpos,
                                      nglyphs, mouse_face_face_id);
            }
          else /* draw == DRAW_NORMAL_TEXT */
-           write_glyphs (row->glyphs[TEXT_AREA] + start_hpos, nglyphs);
+           write_glyphs (f, row->glyphs[TEXT_AREA] + start_hpos, nglyphs);
        }
-      cursor_to (save_y, save_x);
+      cursor_to (f, save_y, save_x);
     }
 }
 
@@ -2924,9 +2889,9 @@
 }
 
 int 
-handle_one_term_event (Gpm_Event *event, struct input_event* hold_quit)
+handle_one_term_event (struct tty_display_info *tty, Gpm_Event *event, struct 
input_event* hold_quit)
 {
-  struct frame *f = SELECTED_FRAME ();
+  struct frame *f = XFRAME (tty->top_frame);
   int fd;
   struct input_event ie;
   int do_help = 0;
@@ -3002,6 +2967,7 @@
        doc: /* Open a connection to Gpm.  */)
      ()
 {
+  struct tty_display_info *tty = FRAME_TTY (SELECTED_FRAME ());
   Gpm_Connect connection;
 
   connection.eventMask = ~0;
@@ -3010,13 +2976,16 @@
   connection.minMod = 0;
   gpm_zerobased = 1;
 
-  if (Gpm_Open (&connection, 0) < 0)
+  /* We only support GPM on the controlling tty.  */
+  if (term_gpm || tty->terminal->id > 1
+      || Gpm_Open (&connection, 0) < 0)
     return Qnil;
   else
     {
       term_gpm = 1;
-      reset_sys_modes ();
-      init_sys_modes ();
+      gpm_tty = tty->terminal->id;
+      reset_sys_modes (tty);
+      init_sys_modes (tty);
       add_gpm_wait_descriptor (gpm_fd);
       return Qt;
     }
@@ -3039,81 +3008,353 @@
                            Initialization
  ***********************************************************************/
 
+/* Initialize the tty-dependent part of frame F.  The frame must
+   already have its device initialized. */
+
 void
-term_init (terminal_type)
-     char *terminal_type;
+create_tty_output (struct frame *f)
+{
+  struct tty_output *t;
+
+  if (! FRAME_TERMCAP_P (f))
+    abort ();
+
+  t = xmalloc (sizeof (struct tty_output));
+  bzero (t, sizeof (struct tty_output));
+
+  t->display_info = FRAME_TERMINAL (f)->display_info.tty;
+
+  f->output_data.tty = t;
+}
+
+/* Delete the tty-dependent part of frame F. */
+
+static void
+delete_tty_output (struct frame *f)
+{
+  if (! FRAME_TERMCAP_P (f))
+    abort ();
+
+  xfree (f->output_data.tty);
+}
+
+
+
+static void
+clear_tty_hooks (struct terminal *terminal)
+{
+  terminal->rif = 0;
+  terminal->cursor_to_hook = 0;
+  terminal->raw_cursor_to_hook = 0;
+  terminal->clear_to_end_hook = 0;
+  terminal->clear_frame_hook = 0;
+  terminal->clear_end_of_line_hook = 0;
+  terminal->ins_del_lines_hook = 0;
+  terminal->insert_glyphs_hook = 0;
+  terminal->write_glyphs_hook = 0;
+  terminal->delete_glyphs_hook = 0;
+  terminal->ring_bell_hook = 0;
+  terminal->reset_terminal_modes_hook = 0;
+  terminal->set_terminal_modes_hook = 0;
+  terminal->update_begin_hook = 0;
+  terminal->update_end_hook = 0;
+  terminal->set_terminal_window_hook = 0;
+  terminal->mouse_position_hook = 0;
+  terminal->frame_rehighlight_hook = 0;
+  terminal->frame_raise_lower_hook = 0;
+  terminal->fullscreen_hook = 0;
+  terminal->set_vertical_scroll_bar_hook = 0;
+  terminal->condemn_scroll_bars_hook = 0;
+  terminal->redeem_scroll_bar_hook = 0;
+  terminal->judge_scroll_bars_hook = 0;
+  terminal->read_socket_hook = 0;
+  terminal->frame_up_to_date_hook = 0;
+
+  /* Leave these two set, or suspended frames are not deleted
+     correctly.  */
+  terminal->delete_frame_hook = &delete_tty_output;
+  terminal->delete_terminal_hook = &delete_tty;
+}
+
+static void
+set_tty_hooks (struct terminal *terminal)
+{
+  terminal->rif = 0; /* ttys don't support window-based redisplay. */
+
+  terminal->cursor_to_hook = &tty_cursor_to;
+  terminal->raw_cursor_to_hook = &tty_raw_cursor_to;
+
+  terminal->clear_to_end_hook = &tty_clear_to_end;
+  terminal->clear_frame_hook = &tty_clear_frame;
+  terminal->clear_end_of_line_hook = &tty_clear_end_of_line;
+
+  terminal->ins_del_lines_hook = &tty_ins_del_lines;
+
+  terminal->insert_glyphs_hook = &tty_insert_glyphs;
+  terminal->write_glyphs_hook = &tty_write_glyphs;
+  terminal->delete_glyphs_hook = &tty_delete_glyphs;
+
+  terminal->ring_bell_hook = &tty_ring_bell;
+  
+  terminal->reset_terminal_modes_hook = &tty_reset_terminal_modes;
+  terminal->set_terminal_modes_hook = &tty_set_terminal_modes;
+  terminal->update_begin_hook = 0; /* Not needed. */
+  terminal->update_end_hook = &tty_update_end;
+  terminal->set_terminal_window_hook = &tty_set_terminal_window;
+
+  terminal->mouse_position_hook = 0; /* Not needed. */
+  terminal->frame_rehighlight_hook = 0; /* Not needed. */
+  terminal->frame_raise_lower_hook = 0; /* Not needed. */
+
+  terminal->set_vertical_scroll_bar_hook = 0; /* Not needed. */
+  terminal->condemn_scroll_bars_hook = 0; /* Not needed. */
+  terminal->redeem_scroll_bar_hook = 0; /* Not needed. */
+  terminal->judge_scroll_bars_hook = 0; /* Not needed. */
+
+  terminal->read_socket_hook = &tty_read_avail_input; /* keyboard.c */
+  terminal->frame_up_to_date_hook = 0; /* Not needed. */
+  
+  terminal->delete_frame_hook = &delete_tty_output;
+  terminal->delete_terminal_hook = &delete_tty;
+}
+
+/* Drop the controlling terminal if fd is the same device. */
+static void
+dissociate_if_controlling_tty (int fd)
+{
+#ifndef WINDOWSNT
+  int pgid;
+  EMACS_GET_TTY_PGRP (fd, &pgid); /* If tcgetpgrp succeeds, fd is the ctty. */
+  if (pgid != -1)
+    {
+#if defined (USG) && !defined (BSD_PGRPS)
+      setpgrp ();
+      no_controlling_tty = 1;
+#else
+#ifdef TIOCNOTTY                /* Try BSD ioctls. */
+      sigblock (sigmask (SIGTTOU));
+      fd = emacs_open ("/dev/tty", O_RDWR, 0);
+      if (fd != -1 && ioctl (fd, TIOCNOTTY, 0) != -1)
+        {
+          no_controlling_tty = 1;
+        }
+      if (fd != -1)
+        emacs_close (fd);
+      sigunblock (sigmask (SIGTTOU));
+#else
+      /* Unknown system. */
+      croak ();
+#endif  /* ! TIOCNOTTY */
+#endif  /* ! USG */
+    }
+#endif
+}
+
+static void maybe_fatal();
+
+/* Create a termcap display on the tty device with the given name and
+   type.
+
+   If NAME is NULL, then use the controlling tty, i.e., "/dev/tty".
+   Otherwise NAME should be a path to the tty device file,
+   e.g. "/dev/pts/7".
+
+   TERMINAL_TYPE is the termcap type of the device, e.g. "vt100".
+
+   If MUST_SUCCEED is true, then all errors are fatal. */
+
+struct terminal *
+init_tty (char *name, char *terminal_type, int must_succeed)
 {
-  char *area;
+  char *area = NULL;
   char **address = &area;
   char *buffer = NULL;
   int buffer_size = 4096;
-  register char *p;
+  register char *p = NULL;
   int status;
-  struct frame *sf = XFRAME (selected_frame);
+  struct tty_display_info *tty = NULL;
+  struct terminal *terminal = NULL;
+  int ctty = 0;                 /* 1 if asked to open controlling tty. */
+
+  if (!terminal_type)
+    maybe_fatal (must_succeed, 0, 0,
+                 "Unknown terminal type",
+                 "Unknown terminal type");
+
+#ifndef WINDOWSNT  
+  if (name == NULL)
+    name = "/dev/tty";
+  if (!strcmp (name, "/dev/tty"))
+    ctty = 1;
+
+  /* If we already have a terminal on the given device, use that.  If
+     all such terminals are suspended, create a new one instead.  */
+  /* XXX Perhaps this should be made explicit by having init_tty
+     always create a new terminal and separating terminal and frame
+     creation on Lisp level.  */
+  terminal = get_named_tty (name);
+  if (terminal)
+    return terminal;
+#endif
+  
+  terminal = create_terminal ();
+  tty = (struct tty_display_info *) xmalloc (sizeof (struct tty_display_info));
+  bzero (tty, sizeof (struct tty_display_info));
+  tty->next = tty_list;
+  tty_list = tty;
+
+  terminal->type = output_termcap;
+  terminal->display_info.tty = tty;
+  tty->terminal = terminal;
+
+  tty->Wcm = (struct cm *) xmalloc (sizeof (struct cm));
+  Wcm_clear (tty);
+
+#ifndef WINDOWSNT
+  set_tty_hooks (terminal);
+  
+  {
+    int fd;
+    FILE *file;
+
+#ifdef O_IGNORE_CTTY
+    if (!ctty)
+      /* Open the terminal device.  Don't recognize it as our
+         controlling terminal, and don't make it the controlling tty
+         if we don't have one at the moment.  */
+      fd = emacs_open (name, O_RDWR | O_IGNORE_CTTY | O_NOCTTY, 0);
+    else
+#else
+      /* Alas, O_IGNORE_CTTY is a GNU extension that seems to be only
+         defined on Hurd.  On other systems, we need to explicitly
+         dissociate ourselves from the controlling tty when we want to
+         open a frame on the same terminal.  */
+      fd = emacs_open (name, O_RDWR | O_NOCTTY, 0);
+#endif /* O_IGNORE_CTTY */
+
+    if (fd < 0)
+      maybe_fatal (must_succeed, buffer, terminal,
+                   "Could not open file: %s",
+                   "Could not open file: %s",
+                   name);
+    if (!isatty (fd))
+      {
+        close (fd);
+        maybe_fatal (must_succeed, buffer, terminal,
+                     "Not a tty device: %s",
+                     "Not a tty device: %s",
+                     name);
+      }
+
+#ifndef O_IGNORE_CTTY
+    if (!ctty)
+      dissociate_if_controlling_tty (fd);
+#endif
+
+    file = fdopen (fd, "w+");
+    tty->name = xstrdup (name);
+    terminal->name = xstrdup (name);
+    tty->input = file;
+    tty->output = file;
+  }
+  
+  tty->type = xstrdup (terminal_type);
+
+  add_keyboard_wait_descriptor (fileno (tty->input));
+
+#endif
 
   encode_terminal_bufsize = 0;
 
 #ifdef HAVE_GPM
-  mouse_position_hook = term_mouse_position;
+  terminal->mouse_position_hook = term_mouse_position;
   Qmouse_face_window = Qnil;
 #endif
 
 #ifdef WINDOWSNT
   initialize_w32_display ();
 
-  Wcm_clear ();
+  /* XXX Can this be non-null?  */
+  if (name)
+    {
+      tty->name = xstrdup (name);
+      terminal->name = xstrdup (name);
+    }
+  tty->type = xstrdup (terminal_type);  
+
+  /* XXX not sure if this line is correct. If it is not set then we
+     crash in update_display_1. */
+  tty->output = stdout;
 
-  area = (char *) xmalloc (2044);
+  Wcm_clear (tty);
 
-  FrameRows = FRAME_LINES (sf);
-  FrameCols = FRAME_COLS (sf);
-  specified_window = FRAME_LINES (sf);
+  area = (char *) xmalloc (2044); /* XXX this seems unused. */
 
-  delete_in_insert_mode = 1;
+  {
+    struct frame *f = XFRAME (selected_frame);
+
+    FrameRows (tty) = FRAME_LINES (f); /* XXX */
+    FrameCols (tty) = FRAME_COLS (f);  /* XXX */
+    tty->specified_window = FRAME_LINES (f); /* XXX */
 
-  UseTabs = 0;
-  scroll_region_ok = 0;
+    FRAME_CAN_HAVE_SCROLL_BARS (f) = 0; /* XXX */
+    FRAME_VERTICAL_SCROLL_BAR_TYPE (f) = vertical_scroll_bar_none; /* XXX */
+  }
+  tty->delete_in_insert_mode = 1;
 
-  /* Seems to insert lines when it's not supposed to, messing
-     up the display.  In doing a trace, it didn't seem to be
-     called much, so I don't think we're losing anything by
-     turning it off.  */
+  UseTabs (tty) = 0;
+  terminal->scroll_region_ok = 0;
 
-  line_ins_del_ok = 0;
-  char_ins_del_ok = 1;
+  /* Seems to insert lines when it's not supposed to, messing up the
+     display.  In doing a trace, it didn't seem to be called much, so I
+     don't think we're losing anything by turning it off.  */
+  terminal->line_ins_del_ok = 0;
+  terminal->char_ins_del_ok = 1;
 
   baud_rate = 19200;
 
-  FRAME_CAN_HAVE_SCROLL_BARS (sf) = 0;
-  FRAME_VERTICAL_SCROLL_BAR_TYPE (sf) = vertical_scroll_bar_none;
-  TN_max_colors = 16;  /* Required to be non-zero for tty-display-color-p */
+  tty->TN_max_colors = 16;  /* Required to be non-zero for tty-display-color-p 
*/
 
-  return;
+  return terminal;
 #else  /* not WINDOWSNT */
 
-  Wcm_clear ();
+  Wcm_clear (tty);
 
   buffer = (char *) xmalloc (buffer_size);
+  
+  /* On some systems, tgetent tries to access the controlling
+     terminal. */
+  sigblock (sigmask (SIGTTOU));
   status = tgetent (buffer, terminal_type);
+  sigunblock (sigmask (SIGTTOU));
+  
   if (status < 0)
     {
 #ifdef TERMINFO
-      fatal ("Cannot open terminfo database file");
+      maybe_fatal (must_succeed, buffer, terminal,
+                   "Cannot open terminfo database file",
+                   "Cannot open terminfo database file");
 #else
-      fatal ("Cannot open termcap database file");
+      maybe_fatal (must_succeed, buffer, terminal,
+                   "Cannot open termcap database file",
+                   "Cannot open termcap database file");
 #endif
     }
   if (status == 0)
     {
 #ifdef TERMINFO
-      fatal ("Terminal type %s is not defined.\n\
+      maybe_fatal (must_succeed, buffer, terminal,
+                   "Terminal type %s is not defined",
+                   "Terminal type %s is not defined.\n\
 If that is not the actual type of terminal you have,\n\
 use the Bourne shell command `TERM=... export TERM' (C-shell:\n\
 `setenv TERM ...') to specify the correct type.  It may be necessary\n\
 to do `unset TERMINFO' (C-shell: `unsetenv TERMINFO') as well.",
             terminal_type);
 #else
-      fatal ("Terminal type %s is not defined.\n\
+      maybe_fatal (must_succeed, buffer, terminal,
+                   "Terminal type %s is not defined",
+                   "Terminal type %s is not defined.\n\
 If that is not the actual type of terminal you have,\n\
 use the Bourne shell command `TERM=... export TERM' (C-shell:\n\
 `setenv TERM ...') to specify the correct type.  It may be necessary\n\
@@ -3129,219 +3370,233 @@
 #endif
   area = (char *) xmalloc (buffer_size);
 
-  TS_ins_line = tgetstr ("al", address);
-  TS_ins_multi_lines = tgetstr ("AL", address);
-  TS_bell = tgetstr ("bl", address);
-  BackTab = tgetstr ("bt", address);
-  TS_clr_to_bottom = tgetstr ("cd", address);
-  TS_clr_line = tgetstr ("ce", address);
-  TS_clr_frame = tgetstr ("cl", address);
-  ColPosition = NULL; /* tgetstr ("ch", address); */
-  AbsPosition = tgetstr ("cm", address);
-  CR = tgetstr ("cr", address);
-  TS_set_scroll_region = tgetstr ("cs", address);
-  TS_set_scroll_region_1 = tgetstr ("cS", address);
-  RowPosition = tgetstr ("cv", address);
-  TS_del_char = tgetstr ("dc", address);
-  TS_del_multi_chars = tgetstr ("DC", address);
-  TS_del_line = tgetstr ("dl", address);
-  TS_del_multi_lines = tgetstr ("DL", address);
-  TS_delete_mode = tgetstr ("dm", address);
-  TS_end_delete_mode = tgetstr ("ed", address);
-  TS_end_insert_mode = tgetstr ("ei", address);
-  Home = tgetstr ("ho", address);
-  TS_ins_char = tgetstr ("ic", address);
-  TS_ins_multi_chars = tgetstr ("IC", address);
-  TS_insert_mode = tgetstr ("im", address);
-  TS_pad_inserted_char = tgetstr ("ip", address);
-  TS_end_keypad_mode = tgetstr ("ke", address);
-  TS_keypad_mode = tgetstr ("ks", address);
-  LastLine = tgetstr ("ll", address);
-  Right = tgetstr ("nd", address);
-  Down = tgetstr ("do", address);
-  if (!Down)
-    Down = tgetstr ("nl", address); /* Obsolete name for "do" */
+  tty->TS_ins_line = tgetstr ("al", address);
+  tty->TS_ins_multi_lines = tgetstr ("AL", address);
+  tty->TS_bell = tgetstr ("bl", address);
+  BackTab (tty) = tgetstr ("bt", address);
+  tty->TS_clr_to_bottom = tgetstr ("cd", address);
+  tty->TS_clr_line = tgetstr ("ce", address);
+  tty->TS_clr_frame = tgetstr ("cl", address);
+  ColPosition (tty) = NULL; /* tgetstr ("ch", address); */
+  AbsPosition (tty) = tgetstr ("cm", address);
+  CR (tty) = tgetstr ("cr", address);
+  tty->TS_set_scroll_region = tgetstr ("cs", address);
+  tty->TS_set_scroll_region_1 = tgetstr ("cS", address);
+  RowPosition (tty) = tgetstr ("cv", address);
+  tty->TS_del_char = tgetstr ("dc", address);
+  tty->TS_del_multi_chars = tgetstr ("DC", address);
+  tty->TS_del_line = tgetstr ("dl", address);
+  tty->TS_del_multi_lines = tgetstr ("DL", address);
+  tty->TS_delete_mode = tgetstr ("dm", address);
+  tty->TS_end_delete_mode = tgetstr ("ed", address);
+  tty->TS_end_insert_mode = tgetstr ("ei", address);
+  Home (tty) = tgetstr ("ho", address);
+  tty->TS_ins_char = tgetstr ("ic", address);
+  tty->TS_ins_multi_chars = tgetstr ("IC", address);
+  tty->TS_insert_mode = tgetstr ("im", address);
+  tty->TS_pad_inserted_char = tgetstr ("ip", address);
+  tty->TS_end_keypad_mode = tgetstr ("ke", address);
+  tty->TS_keypad_mode = tgetstr ("ks", address);
+  LastLine (tty) = tgetstr ("ll", address);
+  Right (tty) = tgetstr ("nd", address);
+  Down (tty) = tgetstr ("do", address);
+  if (!Down (tty))
+    Down (tty) = tgetstr ("nl", address); /* Obsolete name for "do" */
 #ifdef VMS
   /* VMS puts a carriage return before each linefeed,
      so it is not safe to use linefeeds.  */
-  if (Down && Down[0] == '\n' && Down[1] == '\0')
-    Down = 0;
+  if (Down (tty) && Down (tty)[0] == '\n' && Down (tty)[1] == '\0')
+    Down (tty) = 0;
 #endif /* VMS */
   if (tgetflag ("bs"))
-    Left = "\b";                 /* can't possibly be longer! */
+    Left (tty) = "\b";           /* can't possibly be longer! */
   else                           /* (Actually, "bs" is obsolete...) */
-    Left = tgetstr ("le", address);
-  if (!Left)
-    Left = tgetstr ("bc", address); /* Obsolete name for "le" */
-  TS_pad_char = tgetstr ("pc", address);
-  TS_repeat = tgetstr ("rp", address);
-  TS_end_standout_mode = tgetstr ("se", address);
-  TS_fwd_scroll = tgetstr ("sf", address);
-  TS_standout_mode = tgetstr ("so", address);
-  TS_rev_scroll = tgetstr ("sr", address);
-  Wcm.cm_tab = tgetstr ("ta", address);
-  TS_end_termcap_modes = tgetstr ("te", address);
-  TS_termcap_modes = tgetstr ("ti", address);
-  Up = tgetstr ("up", address);
-  TS_visible_bell = tgetstr ("vb", address);
-  TS_cursor_normal = tgetstr ("ve", address);
-  TS_cursor_visible = tgetstr ("vs", address);
-  TS_cursor_invisible = tgetstr ("vi", address);
-  TS_set_window = tgetstr ("wi", address);
-
-  TS_enter_underline_mode = tgetstr ("us", address);
-  TS_exit_underline_mode = tgetstr ("ue", address);
-  TS_enter_bold_mode = tgetstr ("md", address);
-  TS_enter_dim_mode = tgetstr ("mh", address);
-  TS_enter_blink_mode = tgetstr ("mb", address);
-  TS_enter_reverse_mode = tgetstr ("mr", address);
-  TS_enter_alt_charset_mode = tgetstr ("as", address);
-  TS_exit_alt_charset_mode = tgetstr ("ae", address);
-  TS_exit_attribute_mode = tgetstr ("me", address);
-
-  MultiUp = tgetstr ("UP", address);
-  MultiDown = tgetstr ("DO", address);
-  MultiLeft = tgetstr ("LE", address);
-  MultiRight = tgetstr ("RI", address);
+    Left (tty) = tgetstr ("le", address);
+  if (!Left (tty))
+    Left (tty) = tgetstr ("bc", address); /* Obsolete name for "le" */
+  tty->TS_pad_char = tgetstr ("pc", address);
+  tty->TS_repeat = tgetstr ("rp", address);
+  tty->TS_end_standout_mode = tgetstr ("se", address);
+  tty->TS_fwd_scroll = tgetstr ("sf", address);
+  tty->TS_standout_mode = tgetstr ("so", address);
+  tty->TS_rev_scroll = tgetstr ("sr", address);
+  tty->Wcm->cm_tab = tgetstr ("ta", address);
+  tty->TS_end_termcap_modes = tgetstr ("te", address);
+  tty->TS_termcap_modes = tgetstr ("ti", address);
+  Up (tty) = tgetstr ("up", address);
+  tty->TS_visible_bell = tgetstr ("vb", address);
+  tty->TS_cursor_normal = tgetstr ("ve", address);
+  tty->TS_cursor_visible = tgetstr ("vs", address);
+  tty->TS_cursor_invisible = tgetstr ("vi", address);
+  tty->TS_set_window = tgetstr ("wi", address);
+
+  tty->TS_enter_underline_mode = tgetstr ("us", address);
+  tty->TS_exit_underline_mode = tgetstr ("ue", address);
+  tty->TS_enter_bold_mode = tgetstr ("md", address);
+  tty->TS_enter_dim_mode = tgetstr ("mh", address);
+  tty->TS_enter_blink_mode = tgetstr ("mb", address);
+  tty->TS_enter_reverse_mode = tgetstr ("mr", address);
+  tty->TS_enter_alt_charset_mode = tgetstr ("as", address);
+  tty->TS_exit_alt_charset_mode = tgetstr ("ae", address);
+  tty->TS_exit_attribute_mode = tgetstr ("me", address);
+
+  MultiUp (tty) = tgetstr ("UP", address);
+  MultiDown (tty) = tgetstr ("DO", address);
+  MultiLeft (tty) = tgetstr ("LE", address);
+  MultiRight (tty) = tgetstr ("RI", address);
 
   /* SVr4/ANSI color suppert.  If "op" isn't available, don't support
      color because we can't switch back to the default foreground and
      background.  */
-  TS_orig_pair = tgetstr ("op", address);
-  if (TS_orig_pair)
+  tty->TS_orig_pair = tgetstr ("op", address);
+  if (tty->TS_orig_pair)
     {
-      TS_set_foreground = tgetstr ("AF", address);
-      TS_set_background = tgetstr ("AB", address);
-      if (!TS_set_foreground)
+      tty->TS_set_foreground = tgetstr ("AF", address);
+      tty->TS_set_background = tgetstr ("AB", address);
+      if (!tty->TS_set_foreground)
        {
          /* SVr4.  */
-         TS_set_foreground = tgetstr ("Sf", address);
-         TS_set_background = tgetstr ("Sb", address);
+         tty->TS_set_foreground = tgetstr ("Sf", address);
+         tty->TS_set_background = tgetstr ("Sb", address);
        }
 
-      TN_max_colors = tgetnum ("Co");
-      TN_max_pairs = tgetnum ("pa");
+      tty->TN_max_colors = tgetnum ("Co");
+      tty->TN_max_pairs = tgetnum ("pa");
 
-      TN_no_color_video = tgetnum ("NC");
-      if (TN_no_color_video == -1)
-       TN_no_color_video = 0;
+      tty->TN_no_color_video = tgetnum ("NC");
+      if (tty->TN_no_color_video == -1)
+        tty->TN_no_color_video = 0;
     }
 
-  tty_default_color_capabilities (1);
+  tty_default_color_capabilities (tty, 1);
 
-  MagicWrap = tgetflag ("xn");
+  MagicWrap (tty) = tgetflag ("xn");
   /* Since we make MagicWrap terminals look like AutoWrap, we need to have
      the former flag imply the latter.  */
-  AutoWrap = MagicWrap || tgetflag ("am");
-  memory_below_frame = tgetflag ("db");
-  TF_hazeltine = tgetflag ("hz");
-  must_write_spaces = tgetflag ("in");
-  meta_key = tgetflag ("km") || tgetflag ("MT");
-  TF_insmode_motion = tgetflag ("mi");
-  TF_standout_motion = tgetflag ("ms");
-  TF_underscore = tgetflag ("ul");
-  TF_teleray = tgetflag ("xt");
-
-  term_get_fkeys (address);
+  AutoWrap (tty) = MagicWrap (tty) || tgetflag ("am");
+  terminal->memory_below_frame = tgetflag ("db");
+  tty->TF_hazeltine = tgetflag ("hz");
+  terminal->must_write_spaces = tgetflag ("in");
+  tty->meta_key = tgetflag ("km") || tgetflag ("MT");
+  tty->TF_insmode_motion = tgetflag ("mi");
+  tty->TF_standout_motion = tgetflag ("ms");
+  tty->TF_underscore = tgetflag ("ul");
+  tty->TF_teleray = tgetflag ("xt");
+
+#ifdef MULTI_KBOARD
+  terminal->kboard = (KBOARD *) xmalloc (sizeof (KBOARD));
+  init_kboard (terminal->kboard);
+  terminal->kboard->next_kboard = all_kboards;
+  all_kboards = terminal->kboard;
+  terminal->kboard->reference_count++;
+  /* Don't let the initial kboard remain current longer than necessary.
+     That would cause problems if a file loaded on startup tries to
+     prompt in the mini-buffer.  */
+  if (current_kboard == initial_kboard)
+    current_kboard = terminal->kboard;
+  term_get_fkeys (address, terminal->kboard);
+#endif
 
   /* Get frame size from system, or else from termcap.  */
   {
     int height, width;
-    get_frame_size (&width, &height);
-    FRAME_COLS (sf) = width;
-    FRAME_LINES (sf) = height;
-  }
+    get_tty_size (fileno (tty->input), &width, &height);
+    FrameCols (tty) = width;
+    FrameRows (tty) = height;
+  }
+
+  if (FrameCols (tty) <= 0)
+    FrameCols (tty) = tgetnum ("co");
+  if (FrameRows (tty) <= 0)
+    FrameRows (tty) = tgetnum ("li");
+
+  if (FrameRows (tty) < 3 || FrameCols (tty) < 3)
+    maybe_fatal (must_succeed, NULL, terminal,
+                 "Screen size %dx%d is too small"
+                 "Screen size %dx%d is too small",
+                 FrameCols (tty), FrameRows (tty));
 
-  if (FRAME_COLS (sf) <= 0)
-    SET_FRAME_COLS (sf, tgetnum ("co"));
-  else
-    /* Keep width and external_width consistent */
-    SET_FRAME_COLS (sf, FRAME_COLS (sf));
-  if (FRAME_LINES (sf) <= 0)
-    FRAME_LINES (sf) = tgetnum ("li");
-
-  if (FRAME_LINES (sf) < 3 || FRAME_COLS (sf) < 3)
-    fatal ("Screen size %dx%d is too small",
-          FRAME_LINES (sf), FRAME_COLS (sf));
+#if 0  /* This is not used anywhere. */
+  tty->terminal->min_padding_speed = tgetnum ("pb");
+#endif
 
-  min_padding_speed = tgetnum ("pb");
-  TabWidth = tgetnum ("tw");
+  TabWidth (tty) = tgetnum ("tw");
 
 #ifdef VMS
   /* These capabilities commonly use ^J.
      I don't know why, but sending them on VMS does not work;
      it causes following spaces to be lost, sometimes.
      For now, the simplest fix is to avoid using these capabilities ever.  */
-  if (Down && Down[0] == '\n')
-    Down = 0;
+  if (Down (tty) && Down (tty)[0] == '\n')
+    Down (tty) = 0;
 #endif /* VMS */
 
-  if (!TS_bell)
-    TS_bell = "\07";
+  if (!tty->TS_bell)
+    tty->TS_bell = "\07";
 
-  if (!TS_fwd_scroll)
-    TS_fwd_scroll = Down;
+  if (!tty->TS_fwd_scroll)
+    tty->TS_fwd_scroll = Down (tty);
 
-  PC = TS_pad_char ? *TS_pad_char : 0;
+  PC = tty->TS_pad_char ? *tty->TS_pad_char : 0;
 
-  if (TabWidth < 0)
-    TabWidth = 8;
+  if (TabWidth (tty) < 0)
+    TabWidth (tty) = 8;
 
 /* Turned off since /etc/termcap seems to have :ta= for most terminals
    and newer termcap doc does not seem to say there is a default.
-  if (!Wcm.cm_tab)
-    Wcm.cm_tab = "\t";
+  if (!tty->Wcm->cm_tab)
+    tty->Wcm->cm_tab = "\t";
 */
 
   /* We don't support standout modes that use `magic cookies', so
      turn off any that do.  */
-  if (TS_standout_mode && tgetnum ("sg") >= 0)
+  if (tty->TS_standout_mode && tgetnum ("sg") >= 0)
     {
-      TS_standout_mode = 0;
-      TS_end_standout_mode = 0;
+      tty->TS_standout_mode = 0;
+      tty->TS_end_standout_mode = 0;
     }
-  if (TS_enter_underline_mode && tgetnum ("ug") >= 0)
+  if (tty->TS_enter_underline_mode && tgetnum ("ug") >= 0)
     {
-      TS_enter_underline_mode = 0;
-      TS_exit_underline_mode = 0;
+      tty->TS_enter_underline_mode = 0;
+      tty->TS_exit_underline_mode = 0;
     }
 
   /* If there's no standout mode, try to use underlining instead.  */
-  if (TS_standout_mode == 0)
+  if (tty->TS_standout_mode == 0)
     {
-      TS_standout_mode = TS_enter_underline_mode;
-      TS_end_standout_mode = TS_exit_underline_mode;
+      tty->TS_standout_mode = tty->TS_enter_underline_mode;
+      tty->TS_end_standout_mode = tty->TS_exit_underline_mode;
     }
 
   /* If no `se' string, try using a `me' string instead.
      If that fails, we can't use standout mode at all.  */
-  if (TS_end_standout_mode == 0)
+  if (tty->TS_end_standout_mode == 0)
     {
       char *s = tgetstr ("me", address);
       if (s != 0)
-       TS_end_standout_mode = s;
+        tty->TS_end_standout_mode = s;
       else
-       TS_standout_mode = 0;
+        tty->TS_standout_mode = 0;
     }
 
-  if (TF_teleray)
+  if (tty->TF_teleray)
     {
-      Wcm.cm_tab = 0;
+      tty->Wcm->cm_tab = 0;
       /* We can't support standout mode, because it uses magic cookies.  */
-      TS_standout_mode = 0;
+      tty->TS_standout_mode = 0;
       /* But that means we cannot rely on ^M to go to column zero! */
-      CR = 0;
+      CR (tty) = 0;
       /* LF can't be trusted either -- can alter hpos */
       /* if move at column 0 thru a line with TS_standout_mode */
-      Down = 0;
+      Down (tty) = 0;
     }
 
   /* Special handling for certain terminal types known to need it */
 
   if (!strcmp (terminal_type, "supdup"))
     {
-      memory_below_frame = 1;
-      Wcm.cm_losewrap = 1;
+      terminal->memory_below_frame = 1;
+      tty->Wcm->cm_losewrap = 1;
     }
   if (!strncmp (terminal_type, "c10", 3)
       || !strcmp (terminal_type, "perq"))
@@ -3358,23 +3613,23 @@
         It would be simpler if the :wi string could go in the termcap
         entry, but it can't because it is not fully valid.
         If it were in the termcap entry, it would confuse other programs.  */
-      if (!TS_set_window)
+      if (!tty->TS_set_window)
        {
-         p = TS_termcap_modes;
+         p = tty->TS_termcap_modes;
          while (*p && strcmp (p, "\033v  "))
            p++;
          if (*p)
-           TS_set_window = "\033v%C %C %C %C ";
+           tty->TS_set_window = "\033v%C %C %C %C ";
        }
       /* Termcap entry often fails to have :in: flag */
-      must_write_spaces = 1;
+      terminal->must_write_spaces = 1;
       /* :ti string typically fails to have \E^G! in it */
       /* This limits scope of insert-char to one line.  */
-      strcpy (area, TS_termcap_modes);
+      strcpy (area, tty->TS_termcap_modes);
       strcat (area, "\033\007!");
-      TS_termcap_modes = area;
+      tty->TS_termcap_modes = area;
       area += strlen (area) + 1;
-      p = AbsPosition;
+      p = AbsPosition (tty);
       /* Change all %+ parameters to %C, to handle
         values above 96 correctly for the C100.  */
       while (*p)
@@ -3385,75 +3640,112 @@
        }
     }
 
-  FrameRows = FRAME_LINES (sf);
-  FrameCols = FRAME_COLS (sf);
-  specified_window = FRAME_LINES (sf);
+  tty->specified_window = FrameRows (tty);
 
-  if (Wcm_init () == -1)       /* can't do cursor motion */
+  if (Wcm_init (tty) == -1)    /* can't do cursor motion */
+    {
+      maybe_fatal (must_succeed, NULL, terminal,
+                   "Terminal type \"%s\" is not powerful enough to run Emacs",
 #ifdef VMS
-    fatal ("Terminal type \"%s\" is not powerful enough to run Emacs.\n\
+                   "Terminal type \"%s\" is not powerful enough to run 
Emacs.\n\
 It lacks the ability to position the cursor.\n\
 If that is not the actual type of terminal you have, use either the\n\
 DCL command `SET TERMINAL/DEVICE= ...' for DEC-compatible terminals,\n\
 or `define EMACS_TERM \"terminal type\"' for non-DEC terminals.",
-           terminal_type);
 #else /* not VMS */
 # ifdef TERMINFO
-    fatal ("Terminal type \"%s\" is not powerful enough to run Emacs.\n\
+                   "Terminal type \"%s\" is not powerful enough to run 
Emacs.\n\
 It lacks the ability to position the cursor.\n\
 If that is not the actual type of terminal you have,\n\
 use the Bourne shell command `TERM=... export TERM' (C-shell:\n\
 `setenv TERM ...') to specify the correct type.  It may be necessary\n\
 to do `unset TERMINFO' (C-shell: `unsetenv TERMINFO') as well.",
-          terminal_type);
 # else /* TERMCAP */
-    fatal ("Terminal type \"%s\" is not powerful enough to run Emacs.\n\
+                   "Terminal type \"%s\" is not powerful enough to run 
Emacs.\n\
 It lacks the ability to position the cursor.\n\
 If that is not the actual type of terminal you have,\n\
 use the Bourne shell command `TERM=... export TERM' (C-shell:\n\
 `setenv TERM ...') to specify the correct type.  It may be necessary\n\
 to do `unset TERMCAP' (C-shell: `unsetenv TERMCAP') as well.",
-          terminal_type);
 # endif /* TERMINFO */
 #endif /*VMS */
-  if (FRAME_LINES (sf) <= 0
-      || FRAME_COLS (sf) <= 0)
-    fatal ("The frame size has not been specified");
-
-  delete_in_insert_mode
-    = TS_delete_mode && TS_insert_mode
-      && !strcmp (TS_delete_mode, TS_insert_mode);
+                   terminal_type);
+    }
 
-  se_is_so = (TS_standout_mode
-             && TS_end_standout_mode
-             && !strcmp (TS_standout_mode, TS_end_standout_mode));
+  if (FrameRows (tty) <= 0 || FrameCols (tty) <= 0)
+    maybe_fatal (must_succeed, NULL, terminal,
+                 "Could not determine the frame size",
+                 "Could not determine the frame size");
+
+  tty->delete_in_insert_mode
+    = tty->TS_delete_mode && tty->TS_insert_mode
+    && !strcmp (tty->TS_delete_mode, tty->TS_insert_mode);
+
+  tty->se_is_so = (tty->TS_standout_mode
+              && tty->TS_end_standout_mode
+              && !strcmp (tty->TS_standout_mode, tty->TS_end_standout_mode));
+
+  UseTabs (tty) = tabs_safe_p (fileno (tty->input)) && TabWidth (tty) == 8;
+
+  terminal->scroll_region_ok
+    = (tty->Wcm->cm_abs
+       && (tty->TS_set_window || tty->TS_set_scroll_region || 
tty->TS_set_scroll_region_1));
+
+  terminal->line_ins_del_ok
+    = (((tty->TS_ins_line || tty->TS_ins_multi_lines)
+        && (tty->TS_del_line || tty->TS_del_multi_lines))
+       || (terminal->scroll_region_ok
+           && tty->TS_fwd_scroll && tty->TS_rev_scroll));
+
+  terminal->char_ins_del_ok
+    = ((tty->TS_ins_char || tty->TS_insert_mode
+        || tty->TS_pad_inserted_char || tty->TS_ins_multi_chars)
+       && (tty->TS_del_char || tty->TS_del_multi_chars));
+
+  terminal->fast_clear_end_of_line = tty->TS_clr_line != 0;
+
+  init_baud_rate (fileno (tty->input));
+
+#ifdef AIXHFT
+  /* The HFT system on AIX doesn't optimize for scrolling, so it's
+     really ugly at times.  */
+  terminal->line_ins_del_ok = 0;
+  terminal->char_ins_del_ok = 0;
+#endif
 
-  UseTabs = tabs_safe_p () && TabWidth == 8;
+  /* Don't do this.  I think termcap may still need the buffer. */
+  /* xfree (buffer); */
 
-  scroll_region_ok
-    = (Wcm.cm_abs
-       && (TS_set_window || TS_set_scroll_region || TS_set_scroll_region_1));
+  /* Init system terminal modes (RAW or CBREAK, etc.).  */
+  init_sys_modes (tty);
 
-  line_ins_del_ok = (((TS_ins_line || TS_ins_multi_lines)
-                     && (TS_del_line || TS_del_multi_lines))
-                    || (scroll_region_ok && TS_fwd_scroll && TS_rev_scroll));
+  return terminal;
+#endif /* not WINDOWSNT */
+}
 
-  char_ins_del_ok = ((TS_ins_char || TS_insert_mode
-                     || TS_pad_inserted_char || TS_ins_multi_chars)
-                    && (TS_del_char || TS_del_multi_chars));
+/* Auxiliary error-handling function for init_tty.
+   Free BUFFER and delete TERMINAL, then call error or fatal
+   with str1 or str2, respectively, according to MUST_SUCCEED.  */
 
-  fast_clear_end_of_line = TS_clr_line != 0;
+static void
+maybe_fatal (must_succeed, buffer, terminal, str1, str2, arg1, arg2)
+     int must_succeed;
+     char *buffer;
+     struct terminal *terminal;
+     char *str1, *str2, *arg1, *arg2;
+{
+  if (buffer)
+    xfree (buffer);
 
-  init_baud_rate ();
-  if (read_socket_hook)                /* Baudrate is somewhat */
-                               /* meaningless in this case */
-    baud_rate = 9600;
+  if (terminal)
+    delete_tty (terminal);
 
-  FRAME_CAN_HAVE_SCROLL_BARS (sf) = 0;
-  FRAME_VERTICAL_SCROLL_BAR_TYPE (sf) = vertical_scroll_bar_none;
-#endif /* WINDOWSNT */
+  if (must_succeed)
+    fatal (str2, arg1, arg2);
+  else
+    error (str1, arg1, arg2);
 
-  xfree (buffer);
+  abort ();
 }
 
 /* VARARGS 1 */
@@ -3468,16 +3760,108 @@
   exit (1);
 }
 
-DEFUN ("tty-no-underline", Ftty_no_underline, Stty_no_underline, 0, 0, 0,
-       doc: /* Declare that this terminal does not handle underlining.
-This is used to override the terminfo data, for certain terminals that
-do not really do underlining, but say that they do.  */)
-  ()
+
+
+/* Delete the given tty terminal, closing all frames on it. */
+
+static void
+delete_tty (struct terminal *terminal)
 {
-  TS_enter_underline_mode = 0;
-  return Qnil;
+  struct tty_display_info *tty;
+  Lisp_Object tail, frame;
+  int last_terminal;
+  
+  /* Protect against recursive calls.  Fdelete_frame in
+     delete_terminal calls us back when it deletes our last frame.  */
+  if (terminal->deleted)
+    return;
+
+  if (terminal->type != output_termcap)
+    abort ();
+
+  tty = terminal->display_info.tty;
+  
+  last_terminal = 1;
+  FOR_EACH_FRAME (tail, frame)
+    {
+      struct frame *f = XFRAME (frame);
+      if (FRAME_LIVE_P (f) && (!FRAME_TERMCAP_P (f) || FRAME_TTY (f) != tty))
+        {
+          last_terminal = 0;
+          break;
+        }
+    }
+  if (last_terminal)
+      error ("Attempt to delete the sole terminal device with live frames");
+  
+  if (tty == tty_list)
+    tty_list = tty->next;
+  else
+    {
+      struct tty_display_info *p;
+      for (p = tty_list; p && p->next != tty; p = p->next)
+        ;
+
+      if (! p)
+        /* This should not happen. */
+        abort ();
+
+      p->next = tty->next;
+      tty->next = 0;
+    }
+
+  /* reset_sys_modes needs a valid device, so this call needs to be
+     before delete_terminal. */
+  reset_sys_modes (tty);
+
+  delete_terminal (terminal);
+
+  if (tty->name)
+    xfree (tty->name);
+
+  if (tty->type)
+    xfree (tty->type);
+
+  if (tty->input)
+    {
+      delete_keyboard_wait_descriptor (fileno (tty->input));
+      if (tty->input != stdin)
+        fclose (tty->input);
+    }
+  if (tty->output && tty->output != stdout && tty->output != tty->input)
+    fclose (tty->output);
+  if (tty->termscript)
+    fclose (tty->termscript);
+
+  if (tty->old_tty)
+    xfree (tty->old_tty);
+
+  if (tty->Wcm)
+    xfree (tty->Wcm);
+
+  bzero (tty, sizeof (struct tty_display_info));
+  xfree (tty);
 }
 
+
+
+/* Mark the pointers in the tty_display_info objects.
+   Called by the Fgarbage_collector.  */
+
+void
+mark_ttys (void)
+{
+  struct tty_display_info *tty;
+
+  for (tty = tty_list; tty; tty = tty->next)
+    {
+      if (tty->top_frame)
+        mark_object (tty->top_frame);
+    }
+}
+
+
+
 void
 syms_of_term ()
 {
@@ -3490,10 +3874,18 @@
   system_uses_terminfo = 0;
 #endif
 
-  DEFVAR_LISP ("ring-bell-function", &Vring_bell_function,
-    doc: /* Non-nil means call this function to ring the bell.
-The function should accept no arguments.  */);
-  Vring_bell_function = Qnil;
+  DEFVAR_LISP ("suspend-tty-functions", &Vsuspend_tty_functions,
+    doc: /* Functions to be run after suspending a tty.
+The functions are run with one argument, the terminal id to be suspended.
+See `suspend-tty'.  */);
+  Vsuspend_tty_functions = Qnil;
+
+
+  DEFVAR_LISP ("resume-tty-functions", &Vresume_tty_functions,
+    doc: /* Functions to be run after resuming a tty.
+The functions are run with one argument, the terminal id that was revived.
+See `resume-tty'.  */);
+  Vresume_tty_functions = Qnil;
 
   DEFVAR_BOOL ("visible-cursor", &visible_cursor,
               doc: /* Non-nil means to make the cursor very visible.
@@ -3505,15 +3897,19 @@
   defsubr (&Stty_display_color_p);
   defsubr (&Stty_display_color_cells);
   defsubr (&Stty_no_underline);
+  defsubr (&Stty_type);
+  defsubr (&Scontrolling_tty_p);
+  defsubr (&Ssuspend_tty);
+  defsubr (&Sresume_tty);
 #ifdef HAVE_GPM
   defsubr (&Sterm_open_connection);
   defsubr (&Sterm_close_connection);
 
   staticpro (&Qmouse_face_window);
 #endif /* HAVE_GPM */
-
-  fullscreen_hook = NULL;
 }
 
+
+
 /* arch-tag: 498e7449-6f2e-45e2-91dd-b7d4ca488193
    (do not change this comment) */




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