gdb/tui/tui.c

   1 /* General functions for the WDB TUI.
   2
   3    Copyright (C) 1998-2016 Free Software Foundation, Inc.
   4
   5    Contributed by Hewlett-Packard Company.
   6
   7    This file is part of GDB.
   8
   9    This program is free software; you can redistribute it and/or modify
  10    it under the terms of the GNU General Public License as published by
  11    the Free Software Foundation; either version 3 of the License, or
  12    (at your option) any later version.
  13
  14    This program is distributed in the hope that it will be useful,
  15    but WITHOUT ANY WARRANTY; without even the implied warranty of
  16    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17    GNU General Public License for more details.
  18
  19    You should have received a copy of the GNU General Public License
  20    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  21
  22 #include "defs.h"
  23 #include "gdbcmd.h"
  24 #include "tui/tui.h"
  25 #include "tui/tui-hooks.h"
  26 #include "tui/tui-data.h"
  27 #include "tui/tui-layout.h"
  28 #include "tui/tui-io.h"
  29 #include "tui/tui-regs.h"
  30 #include "tui/tui-stack.h"
  31 #include "tui/tui-win.h"
  32 #include "tui/tui-winsource.h"
  33 #include "tui/tui-windata.h"
  34 #include "target.h"
  35 #include "frame.h"
  36 #include "breakpoint.h"
  37 #include "inferior.h"
  38 #include "symtab.h"
  39 #include "source.h"
  40 #include "terminal.h"
  41 #include "top.h"
  42
  43 #include <ctype.h>
  44 #include <signal.h>
  45 #include <fcntl.h>
  46 #if 0
  47 #include <termio.h>
  48 #endif
  49 #include <setjmp.h>
  50
  51 #include "gdb_curses.h"
  52 #include "interps.h"
  53
  54 /* This redefines CTRL if it is not already defined, so it must come
  55    after terminal state releated include files like <term.h> and
  56    "gdb_curses.h".  */
  57 #include "readline/readline.h"
  58
  59 /* Tells whether the TUI is active or not.  */
  60 int tui_active = 0;
  61 static int tui_finish_init = 1;
  62
  63 enum tui_key_mode tui_current_key_mode = TUI_COMMAND_MODE;
  64
  65 struct tui_char_command
  66 {
  67   unsigned char key;
  68   const char *cmd;
  69 };
  70
  71 /* Key mapping to gdb commands when the TUI is using the single key
  72    mode.  */
  73 static const struct tui_char_command tui_commands[] = {
  74   { 'c', "continue" },
  75   { 'd', "down" },
  76   { 'f', "finish" },
  77   { 'n', "next" },
  78   { 'r', "run" },
  79   { 's', "step" },
  80   { 'u', "up" },
  81   { 'v', "info locals" },
  82   { 'w', "where" },
  83   { 0, 0 },
  84 };
  85
  86 static Keymap tui_keymap;
  87 static Keymap tui_readline_standard_keymap;
  88
  89 /* TUI readline command.
  90    Switch the output mode between TUI/standard gdb.  */
  91 static int
  92 tui_rl_switch_mode (int notused1, int notused2)
  93 {
  94
  95   /* Don't let exceptions escape.  We're in the middle of a readline
  96      callback that isn't prepared for that.  */
  97   TRY
  98     {
  99       if (tui_active)
 100         {
 101           tui_disable ();
 102           rl_prep_terminal (0);
 103         }
 104       else
 105         {
 106           /* If tui_enable throws, we'll re-prep below.  */
 107           rl_deprep_terminal ();
 108           tui_enable ();
 109         }
 110     }
 111   CATCH (ex, RETURN_MASK_ALL)
 112     {
 113       exception_print (gdb_stderr, ex);
 114
 115       if (!tui_active)
 116         rl_prep_terminal (0);
 117     }
 118   END_CATCH
 119
 120   /* Clear the readline in case switching occurred in middle of
 121      something.  */
 122   if (rl_end)
 123     rl_kill_text (0, rl_end);
 124
 125   /* Since we left the curses mode, the terminal mode is restored to
 126      some previous state.  That state may not be suitable for readline
 127      to work correctly (it may be restored in line mode).  We force an
 128      exit of the current readline so that readline is re-entered and
 129      it will be able to setup the terminal for its needs.  By
 130      re-entering in readline, we also redisplay its prompt in the
 131      non-curses mode.  */
 132   rl_newline (1, '\n');
 133
 134   /* Make sure the \n we are returning does not repeat the last
 135      command.  */
 136   dont_repeat ();
 137   return 0;
 138 }
 139
 140 /* TUI readline command.
 141    Change the TUI layout to show a next layout.
 142    This function is bound to CTRL-X 2.  It is intended to provide
 143    a functionality close to the Emacs split-window command.  We
 144    always show two windows (src+asm), (src+regs) or (asm+regs).  */
 145 static int
 146 tui_rl_change_windows (int notused1, int notused2)
 147 {
 148   if (!tui_active)
 149     tui_rl_switch_mode (0 /* notused */, 0 /* notused */);
 150
 151   if (tui_active)
 152     {
 153       enum tui_layout_type new_layout;
 154
 155       new_layout = tui_current_layout ();
 156
 157       /* Select a new layout to have a rolling layout behavior with
 158          always two windows (except when undefined).  */
 159       switch (new_layout)
 160         {
 161         case SRC_COMMAND:
 162           new_layout = SRC_DISASSEM_COMMAND;
 163           break;
 164
 165         case DISASSEM_COMMAND:
 166           new_layout = SRC_DISASSEM_COMMAND;
 167           break;
 168
 169         case SRC_DATA_COMMAND:
 170           new_layout = SRC_DISASSEM_COMMAND;
 171           break;
 172
 173         case SRC_DISASSEM_COMMAND:
 174           new_layout = DISASSEM_DATA_COMMAND;
 175           break;
 176
 177         case DISASSEM_DATA_COMMAND:
 178           new_layout = SRC_DATA_COMMAND;
 179           break;
 180
 181         default:
 182           new_layout = SRC_COMMAND;
 183           break;
 184         }
 185       tui_set_layout (new_layout);
 186     }
 187   return 0;
 188 }
 189
 190 /* TUI readline command.
 191    Delete the second TUI window to only show one.  */
 192 static int
 193 tui_rl_delete_other_windows (int notused1, int notused2)
 194 {
 195   if (!tui_active)
 196     tui_rl_switch_mode (0 /* notused */, 0 /* notused */);
 197
 198   if (tui_active)
 199     {
 200       enum tui_layout_type new_layout;
 201
 202       new_layout = tui_current_layout ();
 203
 204       /* Kill one window.  */
 205       switch (new_layout)
 206         {
 207         case SRC_COMMAND:
 208         case SRC_DATA_COMMAND:
 209         case SRC_DISASSEM_COMMAND:
 210         default:
 211           new_layout = SRC_COMMAND;
 212           break;
 213
 214         case DISASSEM_COMMAND:
 215         case DISASSEM_DATA_COMMAND:
 216           new_layout = DISASSEM_COMMAND;
 217           break;
 218         }
 219       tui_set_layout (new_layout);
 220     }
 221   return 0;
 222 }
 223
 224 /* TUI readline command.
 225    Switch the active window to give the focus to a next window.  */
 226 static int
 227 tui_rl_other_window (int count, int key)
 228 {
 229   struct tui_win_info *win_info;
 230
 231   if (!tui_active)
 232     tui_rl_switch_mode (0 /* notused */, 0 /* notused */);
 233
 234   win_info = tui_next_win (tui_win_with_focus ());
 235   if (win_info)
 236     {
 237       tui_set_win_focus_to (win_info);
 238       if (TUI_DATA_WIN && TUI_DATA_WIN->generic.is_visible)
 239         tui_refresh_data_win ();
 240       keypad (TUI_CMD_WIN->generic.handle, (win_info != TUI_CMD_WIN));
 241     }
 242   return 0;
 243 }
 244
 245 /* TUI readline command.
 246    Execute the gdb command bound to the specified key.  */
 247 static int
 248 tui_rl_command_key (int count, int key)
 249 {
 250   int i;
 251
 252   reinitialize_more_filter ();
 253   for (i = 0; tui_commands[i].cmd; i++)
 254     {
 255       if (tui_commands[i].key == key)
 256         {
 257           /* Insert the command in the readline buffer.
 258              Avoid calling the gdb command here since it creates
 259              a possible recursion on readline if prompt_for_continue
 260              is called (See PR 9584).  The command will also appear
 261              in the readline history which turns out to be better.  */
 262           rl_insert_text (tui_commands[i].cmd);
 263           rl_newline (1, '\n');
 264
 265           /* Switch to gdb command mode while executing the command.
 266              This way the gdb's continue prompty will be displayed.  */
 267           tui_set_key_mode (TUI_ONE_COMMAND_MODE);
 268           return 0;
 269         }
 270     }
 271   return 0;
 272 }
 273
 274 /* TUI readline command.
 275    Temporarily leave the TUI SingleKey mode to allow editing
 276    a gdb command with the normal readline.  Once the command
 277    is executed, the TUI SingleKey mode is installed back.  */
 278 static int
 279 tui_rl_command_mode (int count, int key)
 280 {
 281   tui_set_key_mode (TUI_ONE_COMMAND_MODE);
 282   return rl_insert (count, key);
 283 }
 284
 285 /* TUI readline command.
 286    Switch between TUI SingleKey mode and gdb readline editing.  */
 287 static int
 288 tui_rl_next_keymap (int notused1, int notused2)
 289 {
 290   if (!tui_active)
 291     tui_rl_switch_mode (0 /* notused */, 0 /* notused */);
 292
 293   tui_set_key_mode (tui_current_key_mode == TUI_COMMAND_MODE
 294                     ? TUI_SINGLE_KEY_MODE : TUI_COMMAND_MODE);
 295   return 0;
 296 }
 297
 298 /* Readline hook to redisplay ourself the gdb prompt.
 299    In the SingleKey mode, the prompt is not printed so that
 300    the command window is cleaner.  It will be displayed if
 301    we temporarily leave the SingleKey mode.  */
 302 static int
 303 tui_rl_startup_hook (void)
 304 {
 305   rl_already_prompted = 1;
 306   if (tui_current_key_mode != TUI_COMMAND_MODE
 307       && !gdb_in_secondary_prompt_p ())
 308     tui_set_key_mode (TUI_SINGLE_KEY_MODE);
 309   tui_redisplay_readline ();
 310   return 0;
 311 }
 312
 313 /* Change the TUI key mode by installing the appropriate readline
 314    keymap.  */
 315 void
 316 tui_set_key_mode (enum tui_key_mode mode)
 317 {
 318   tui_current_key_mode = mode;
 319   rl_set_keymap (mode == TUI_SINGLE_KEY_MODE
 320                  ? tui_keymap : tui_readline_standard_keymap);
 321   tui_show_locator_content ();
 322 }
 323
 324 /* Initialize readline and configure the keymap for the switching
 325    key shortcut.  */
 326 void
 327 tui_initialize_readline (void)
 328 {
 329   int i;
 330   Keymap tui_ctlx_keymap;
 331
 332   rl_initialize ();
 333
 334   rl_add_defun ("tui-switch-mode", tui_rl_switch_mode, -1);
 335   rl_add_defun ("gdb-command", tui_rl_command_key, -1);
 336   rl_add_defun ("next-keymap", tui_rl_next_keymap, -1);
 337
 338   tui_keymap = rl_make_bare_keymap ();
 339   tui_ctlx_keymap = rl_make_bare_keymap ();
 340   tui_readline_standard_keymap = rl_get_keymap ();
 341
 342   for (i = 0; tui_commands[i].cmd; i++)
 343     rl_bind_key_in_map (tui_commands[i].key, tui_rl_command_key, tui_keymap);
 344
 345   rl_generic_bind (ISKMAP, "\\C-x", (char*) tui_ctlx_keymap, tui_keymap);
 346
 347   /* Bind all other keys to tui_rl_command_mode so that we switch
 348      temporarily from SingleKey mode and can enter a gdb command.  */
 349   for (i = ' '; i < 0x7f; i++)
 350     {
 351       int j;
 352
 353       for (j = 0; tui_commands[j].cmd; j++)
 354         if (tui_commands[j].key == i)
 355           break;
 356
 357       if (tui_commands[j].cmd)
 358         continue;
 359
 360       rl_bind_key_in_map (i, tui_rl_command_mode, tui_keymap);
 361     }
 362
 363   rl_bind_key_in_map ('a', tui_rl_switch_mode, emacs_ctlx_keymap);
 364   rl_bind_key_in_map ('a', tui_rl_switch_mode, tui_ctlx_keymap);
 365   rl_bind_key_in_map ('A', tui_rl_switch_mode, emacs_ctlx_keymap);
 366   rl_bind_key_in_map ('A', tui_rl_switch_mode, tui_ctlx_keymap);
 367   rl_bind_key_in_map (CTRL ('A'), tui_rl_switch_mode, emacs_ctlx_keymap);
 368   rl_bind_key_in_map (CTRL ('A'), tui_rl_switch_mode, tui_ctlx_keymap);
 369   rl_bind_key_in_map ('1', tui_rl_delete_other_windows, emacs_ctlx_keymap);
 370   rl_bind_key_in_map ('1', tui_rl_delete_other_windows, tui_ctlx_keymap);
 371   rl_bind_key_in_map ('2', tui_rl_change_windows, emacs_ctlx_keymap);
 372   rl_bind_key_in_map ('2', tui_rl_change_windows, tui_ctlx_keymap);
 373   rl_bind_key_in_map ('o', tui_rl_other_window, emacs_ctlx_keymap);
 374   rl_bind_key_in_map ('o', tui_rl_other_window, tui_ctlx_keymap);
 375   rl_bind_key_in_map ('q', tui_rl_next_keymap, tui_keymap);
 376   rl_bind_key_in_map ('s', tui_rl_next_keymap, emacs_ctlx_keymap);
 377   rl_bind_key_in_map ('s', tui_rl_next_keymap, tui_ctlx_keymap);
 378 }
 379
 380 /* Return the TERM variable from the environment, or "<unset>"
 381    if not set.  */
 382
 383 static const char *
 384 gdb_getenv_term (void)
 385 {
 386   const char *term;
 387
 388   term = getenv ("TERM");
 389   if (term != NULL)
 390     return term;
 391   return "<unset>";
 392 }
 393
 394 /* Enter in the tui mode (curses).
 395    When in normal mode, it installs the tui hooks in gdb, redirects
 396    the gdb output, configures the readline to work in tui mode.
 397    When in curses mode, it does nothing.  */
 398 void
 399 tui_enable (void)
 400 {
 401   struct interp *interp;
 402
 403   if (tui_active)
 404     return;
 405
 406   /* To avoid to initialize curses when gdb starts, there is a defered
 407      curses initialization.  This initialization is made only once
 408      and the first time the curses mode is entered.  */
 409   if (tui_finish_init)
 410     {
 411       WINDOW *w;
 412       SCREEN *s;
 413       const char *cap;
 414       const char *interp;
 415
 416       /* If the top level interpreter is not the console/tui (e.g.,
 417          MI), enabling curses will certainly lose.  */
 418       interp = interp_name (top_level_interpreter ());
 419       if (strcmp (interp, INTERP_TUI) != 0)
 420         error (_("Cannot enable the TUI when the interpreter is '%s'"), interp);
 421
 422       /* Don't try to setup curses (and print funny control
 423          characters) if we're not outputting to a terminal.  */
 424       if (!ui_file_isatty (gdb_stdout))
 425         error (_("Cannot enable the TUI when output is not a terminal"));
 426
 427       s = newterm (NULL, stdout, stdin);
 428 #ifdef __MINGW32__
 429       /* The MinGW port of ncurses requires $TERM to be unset in order
 430          to activate the Windows console driver.  */
 431       if (s == NULL)
 432         s = newterm ("unknown", stdout, stdin);
 433 #endif
 434       if (s == NULL)
 435         {
 436           error (_("Cannot enable the TUI: error opening terminal [TERM=%s]"),
 437                  gdb_getenv_term ());
 438         }
 439       w = stdscr;
 440
 441       /* Check required terminal capabilities.  The MinGW port of
 442          ncurses does have them, but doesn't expose them through "cup".  */
 443 #ifndef __MINGW32__
 444       cap = tigetstr ("cup");
 445       if (cap == NULL || cap == (char *) -1 || *cap == '\0')
 446         {
 447           endwin ();
 448           delscreen (s);
 449           error (_("Cannot enable the TUI: "
 450                    "terminal doesn't support cursor addressing [TERM=%s]"),
 451                  gdb_getenv_term ());
 452         }
 453 #endif
 454
 455       cbreak ();
 456       noecho ();
 457       /* timeout (1); */
 458       nodelay(w, FALSE);
 459       nl();
 460       keypad (w, TRUE);
 461       rl_initialize ();
 462       tui_set_term_height_to (LINES);
 463       tui_set_term_width_to (COLS);
 464       def_prog_mode ();
 465
 466       tui_show_frame_info (0);
 467       tui_set_layout (SRC_COMMAND);
 468       tui_set_win_focus_to (TUI_SRC_WIN);
 469       keypad (TUI_CMD_WIN->generic.handle, TRUE);
 470       wrefresh (TUI_CMD_WIN->generic.handle);
 471       tui_finish_init = 0;
 472     }
 473   else
 474     {
 475      /* Save the current gdb setting of the terminal.
 476         Curses will restore this state when endwin() is called.  */
 477      def_shell_mode ();
 478      clearok (stdscr, TRUE);
 479    }
 480
 481   /* Install the TUI specific hooks.  */
 482   tui_install_hooks ();
 483   rl_startup_hook = tui_rl_startup_hook;
 484
 485   tui_update_variables ();
 486
 487   tui_setup_io (1);
 488
 489   tui_active = 1;
 490
 491   /* Resize windows before anything might display/refresh a
 492      window.  */
 493   if (tui_win_resized ())
 494     {
 495       tui_set_win_resized_to (FALSE);
 496       tui_resize_all ();
 497     }
 498
 499   if (deprecated_safe_get_selected_frame ())
 500     tui_show_frame_info (deprecated_safe_get_selected_frame ());
 501
 502   /* Restore TUI keymap.  */
 503   tui_set_key_mode (tui_current_key_mode);
 504
 505   /* Refresh the screen.  */
 506   tui_refresh_all_win ();
 507
 508   /* Update gdb's knowledge of its terminal.  */
 509   gdb_save_tty_state ();
 510   tui_update_gdb_sizes ();
 511 }
 512
 513 /* Leave the tui mode.
 514    Remove the tui hooks and configure the gdb output and readline
 515    back to their original state.  The curses mode is left so that
 516    the terminal setting is restored to the point when we entered.  */
 517 void
 518 tui_disable (void)
 519 {
 520   if (!tui_active)
 521     return;
 522
 523   /* Restore initial readline keymap.  */
 524   rl_set_keymap (tui_readline_standard_keymap);
 525
 526   /* Remove TUI hooks.  */
 527   tui_remove_hooks ();
 528   rl_startup_hook = 0;
 529   rl_already_prompted = 0;
 530
 531   /* Leave curses and restore previous gdb terminal setting.  */
 532   endwin ();
 533
 534   /* gdb terminal has changed, update gdb internal copy of it
 535      so that terminal management with the inferior works.  */
 536   tui_setup_io (0);
 537
 538   /* Update gdb's knowledge of its terminal.  */
 539   gdb_save_tty_state ();
 540
 541   tui_active = 0;
 542   tui_update_gdb_sizes ();
 543 }
 544
 545 /* Command wrapper for enabling tui mode.  */
 546
 547 static void
 548 tui_enable_command (char *args, int from_tty)
 549 {
 550   tui_enable ();
 551 }
 552
 553 /* Command wrapper for leaving tui mode.  */
 554
 555 static void
 556 tui_disable_command (char *args, int from_tty)
 557 {
 558   tui_disable ();
 559 }
 560
 561 void
 562 strcat_to_buf (char *buf, int buflen,
 563                const char *item_to_add)
 564 {
 565   if (item_to_add != (char *) NULL && buf != (char *) NULL)
 566     {
 567       if ((strlen (buf) + strlen (item_to_add)) <= buflen)
 568         strcat (buf, item_to_add);
 569       else
 570         strncat (buf, item_to_add, (buflen - strlen (buf)));
 571     }
 572 }
 573
 574 #if 0
 575 /* Solaris <sys/termios.h> defines CTRL.  */
 576 #ifndef CTRL
 577 #define CTRL(x)         (x & ~0140)
 578 #endif
 579
 580 #define FILEDES         2
 581 #define CHK(val, dft)   (val<=0 ? dft : val)
 582
 583 static void
 584 tui_reset (void)
 585 {
 586   struct termio mode;
 587
 588   /* Reset the teletype mode bits to a sensible state.
 589      Copied tset.c.  */
 590 #if defined (TIOCGETC)
 591   struct tchars tbuf;
 592 #endif /* TIOCGETC */
 593 #ifdef UCB_NTTY
 594   struct ltchars ltc;
 595
 596   if (ldisc == NTTYDISC)
 597     {
 598       ioctl (FILEDES, TIOCGLTC, &ltc);
 599       ltc.t_suspc = CHK (ltc.t_suspc, CTRL ('Z'));
 600       ltc.t_dsuspc = CHK (ltc.t_dsuspc, CTRL ('Y'));
 601       ltc.t_rprntc = CHK (ltc.t_rprntc, CTRL ('R'));
 602       ltc.t_flushc = CHK (ltc.t_flushc, CTRL ('O'));
 603       ltc.t_werasc = CHK (ltc.t_werasc, CTRL ('W'));
 604       ltc.t_lnextc = CHK (ltc.t_lnextc, CTRL ('V'));
 605       ioctl (FILEDES, TIOCSLTC, &ltc);
 606     }
 607 #endif /* UCB_NTTY */
 608 #ifdef TIOCGETC
 609   ioctl (FILEDES, TIOCGETC, &tbuf);
 610   tbuf.t_intrc = CHK (tbuf.t_intrc, CTRL ('?'));
 611   tbuf.t_quitc = CHK (tbuf.t_quitc, CTRL ('\\'));
 612   tbuf.t_startc = CHK (tbuf.t_startc, CTRL ('Q'));
 613   tbuf.t_stopc = CHK (tbuf.t_stopc, CTRL ('S'));
 614   tbuf.t_eofc = CHK (tbuf.t_eofc, CTRL ('D'));
 615   /* brkc is left alone.  */
 616   ioctl (FILEDES, TIOCSETC, &tbuf);
 617 #endif /* TIOCGETC */
 618   mode.sg_flags &= ~(RAW
 619 #ifdef CBREAK
 620                      | CBREAK
 621 #endif /* CBREAK */
 622                      | VTDELAY | ALLDELAY);
 623   mode.sg_flags |= XTABS | ECHO | CRMOD | ANYP;
 624
 625   return;
 626 }
 627 #endif
 628
 629 void
 630 tui_show_source (const char *fullname, int line)
 631 {
 632   struct symtab_and_line cursal = get_current_source_symtab_and_line ();
 633
 634   /* Make sure that the source window is displayed.  */
 635   tui_add_win_to_layout (SRC_WIN);
 636
 637   tui_update_source_windows_with_line (cursal.symtab, line);
 638   tui_update_locator_fullname (fullname);
 639 }
 640
 641 void
 642 tui_show_assembly (struct gdbarch *gdbarch, CORE_ADDR addr)
 643 {
 644   tui_add_win_to_layout (DISASSEM_WIN);
 645   tui_update_source_windows_with_addr (gdbarch, addr);
 646 }
 647
 648 int
 649 tui_is_window_visible (enum tui_win_type type)
 650 {
 651   if (tui_active == 0)
 652     return 0;
 653
 654   if (tui_win_list[type] == 0)
 655     return 0;
 656
 657   return tui_win_list[type]->generic.is_visible;
 658 }
 659
 660 int
 661 tui_get_command_dimension (unsigned int *width,
 662                            unsigned int *height)
 663 {
 664   if (!tui_active || (TUI_CMD_WIN == NULL))
 665     {
 666       return 0;
 667     }
 668
 669   *width = TUI_CMD_WIN->generic.width;
 670   *height = TUI_CMD_WIN->generic.height;
 671   return 1;
 672 }
 673
 674 /* Provide a prototype to silence -Wmissing-prototypes.  */
 675 extern initialize_file_ftype _initialize_tui;
 676
 677 void
 678 _initialize_tui (void)
 679 {
 680   struct cmd_list_element **tuicmd;
 681
 682   tuicmd = tui_get_cmd_list ();
 683
 684   add_cmd ("enable", class_tui, tui_enable_command,
 685            _("Enable TUI display mode."),
 686            tuicmd);
 687   add_cmd ("disable", class_tui, tui_disable_command,
 688            _("Disable TUI display mode."),
 689            tuicmd);
 690 }