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authorJoel Sherrill <joel.sherrill@OARcorp.com>2011-04-08 16:24:33 +0000
committerJoel Sherrill <joel.sherrill@OARcorp.com>2011-04-08 16:24:33 +0000
commitb667555541a4d65bb9dae6f0e0f240e6a05b148e (patch)
treeb3ae5c92f04ae68fbf9580d6efcf1a1510851495 /readline-6.2/misc.c
parent2011-04-08 Joel Sherrill <joel.sherrill@oarcorp.com> (diff)
downloadrtems-addon-packages-b667555541a4d65bb9dae6f0e0f240e6a05b148e.tar.bz2
2011-04-08 Joel Sherrill <joel.sherrill@oarcorp.com>
* RTEMS_Makefiles/Makefile.readline-6.2, readline-6.2/CHANGELOG, readline-6.2/CHANGES, readline-6.2/COPYING, readline-6.2/INSTALL, readline-6.2/MANIFEST, readline-6.2/Makefile.in, readline-6.2/NEWS, readline-6.2/README, readline-6.2/USAGE, readline-6.2/aclocal.m4, readline-6.2/ansi_stdlib.h, readline-6.2/bind.c, readline-6.2/callback.c, readline-6.2/chardefs.h, readline-6.2/compat.c, readline-6.2/complete.c, readline-6.2/config.h.in, readline-6.2/configure, readline-6.2/configure.in, readline-6.2/display.c, readline-6.2/emacs_keymap.c, readline-6.2/funmap.c, readline-6.2/histexpand.c, readline-6.2/histfile.c, readline-6.2/histlib.h, readline-6.2/history.c, readline-6.2/history.h, readline-6.2/histsearch.c, readline-6.2/input.c, readline-6.2/isearch.c, readline-6.2/keymaps.c, readline-6.2/keymaps.h, readline-6.2/kill.c, readline-6.2/macro.c, readline-6.2/mbutil.c, readline-6.2/misc.c, readline-6.2/nls.c, readline-6.2/parens.c, readline-6.2/patchlevel, readline-6.2/posixdir.h, readline-6.2/posixjmp.h, readline-6.2/posixselect.h, readline-6.2/posixstat.h, readline-6.2/readline.c, readline-6.2/readline.h, readline-6.2/rlconf.h, readline-6.2/rldefs.h, readline-6.2/rlmbutil.h, readline-6.2/rlprivate.h, readline-6.2/rlshell.h, readline-6.2/rlstdc.h, readline-6.2/rltty.c, readline-6.2/rltty.h, readline-6.2/rltypedefs.h, readline-6.2/rlwinsize.h, readline-6.2/savestring.c, readline-6.2/search.c, readline-6.2/shell.c, readline-6.2/signals.c, readline-6.2/tcap.h, readline-6.2/terminal.c, readline-6.2/text.c, readline-6.2/tilde.c, readline-6.2/tilde.h, readline-6.2/undo.c, readline-6.2/util.c, readline-6.2/vi_keymap.c, readline-6.2/vi_mode.c, readline-6.2/xfree.c, readline-6.2/xmalloc.c, readline-6.2/xmalloc.h, readline-6.2/doc/Makefile.in, readline-6.2/doc/fdl.texi, readline-6.2/doc/history.0, readline-6.2/doc/history.3, readline-6.2/doc/history.dvi, readline-6.2/doc/history.html, readline-6.2/doc/history.info, readline-6.2/doc/history.pdf, readline-6.2/doc/history.ps, readline-6.2/doc/history.texi, readline-6.2/doc/history_3.ps, readline-6.2/doc/hstech.texi, readline-6.2/doc/hsuser.texi, readline-6.2/doc/readline.0, readline-6.2/doc/readline.3, readline-6.2/doc/readline.dvi, readline-6.2/doc/readline.html, readline-6.2/doc/readline.info, readline-6.2/doc/readline.pdf, readline-6.2/doc/readline.ps, readline-6.2/doc/readline_3.ps, readline-6.2/doc/rlman.texi, readline-6.2/doc/rltech.texi, readline-6.2/doc/rluser.texi, readline-6.2/doc/rluserman.dvi, readline-6.2/doc/rluserman.html, readline-6.2/doc/rluserman.info, readline-6.2/doc/rluserman.pdf, readline-6.2/doc/rluserman.ps, readline-6.2/doc/rluserman.texi, readline-6.2/doc/texi2dvi, readline-6.2/doc/texi2html, readline-6.2/doc/texinfo.tex, readline-6.2/doc/version.texi, readline-6.2/examples/Inputrc, readline-6.2/examples/Makefile.in, readline-6.2/examples/excallback.c, readline-6.2/examples/fileman.c, readline-6.2/examples/histexamp.c, readline-6.2/examples/manexamp.c, readline-6.2/examples/readlinebuf.h, readline-6.2/examples/rl-fgets.c, readline-6.2/examples/rl.c, readline-6.2/examples/rlcat.c, readline-6.2/examples/rlevent.c, readline-6.2/examples/rlptytest.c, readline-6.2/examples/rltest.c, readline-6.2/examples/rlversion.c, readline-6.2/examples/rlwrap-0.30.tar.gz, readline-6.2/examples/autoconf/BASH_CHECK_LIB_TERMCAP, readline-6.2/examples/autoconf/RL_LIB_READLINE_VERSION, readline-6.2/examples/autoconf/wi_LIB_READLINE, readline-6.2/examples/rlfe/ChangeLog, readline-6.2/examples/rlfe/Makefile.in, readline-6.2/examples/rlfe/README, readline-6.2/examples/rlfe/config.h.in, readline-6.2/examples/rlfe/configure, readline-6.2/examples/rlfe/configure.in, readline-6.2/examples/rlfe/extern.h, readline-6.2/examples/rlfe/os.h, readline-6.2/examples/rlfe/pty.c, readline-6.2/examples/rlfe/rlfe.c, readline-6.2/examples/rlfe/screen.h, readline-6.2/shlib/Makefile.in, readline-6.2/support/config.guess, readline-6.2/support/config.rpath, readline-6.2/support/config.sub, readline-6.2/support/install.sh, readline-6.2/support/mkdirs, readline-6.2/support/mkdist, readline-6.2/support/mkinstalldirs, readline-6.2/support/shlib-install, readline-6.2/support/shobj-conf, readline-6.2/support/wcwidth.c: New files.
Diffstat (limited to 'readline-6.2/misc.c')
-rw-r--r--readline-6.2/misc.c655
1 files changed, 655 insertions, 0 deletions
diff --git a/readline-6.2/misc.c b/readline-6.2/misc.c
new file mode 100644
index 0000000..9f45773
--- /dev/null
+++ b/readline-6.2/misc.c
@@ -0,0 +1,655 @@
+/* misc.c -- miscellaneous bindable readline functions. */
+
+/* Copyright (C) 1987-2009 Free Software Foundation, Inc.
+
+ This file is part of the GNU Readline Library (Readline), a library
+ for reading lines of text with interactive input and history editing.
+
+ Readline is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ Readline is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with Readline. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#define READLINE_LIBRARY
+
+#if defined (HAVE_CONFIG_H)
+# include <config.h>
+#endif
+
+#if defined (HAVE_UNISTD_H)
+# include <unistd.h>
+#endif /* HAVE_UNISTD_H */
+
+#if defined (HAVE_STDLIB_H)
+# include <stdlib.h>
+#else
+# include "ansi_stdlib.h"
+#endif /* HAVE_STDLIB_H */
+
+#if defined (HAVE_LOCALE_H)
+# include <locale.h>
+#endif
+
+#include <stdio.h>
+
+/* System-specific feature definitions and include files. */
+#include "rldefs.h"
+#include "rlmbutil.h"
+
+/* Some standard library routines. */
+#include "readline.h"
+#include "history.h"
+
+#include "rlprivate.h"
+#include "rlshell.h"
+#include "xmalloc.h"
+
+static int rl_digit_loop PARAMS((void));
+static void _rl_history_set_point PARAMS((void));
+
+/* Forward declarations used in this file */
+void _rl_free_history_entry PARAMS((HIST_ENTRY *));
+
+/* If non-zero, rl_get_previous_history and rl_get_next_history attempt
+ to preserve the value of rl_point from line to line. */
+int _rl_history_preserve_point = 0;
+
+_rl_arg_cxt _rl_argcxt;
+
+/* Saved target point for when _rl_history_preserve_point is set. Special
+ value of -1 means that point is at the end of the line. */
+int _rl_history_saved_point = -1;
+
+/* **************************************************************** */
+/* */
+/* Numeric Arguments */
+/* */
+/* **************************************************************** */
+
+int
+_rl_arg_overflow ()
+{
+ if (rl_numeric_arg > 1000000)
+ {
+ _rl_argcxt = 0;
+ rl_explicit_arg = rl_numeric_arg = 0;
+ rl_ding ();
+ rl_restore_prompt ();
+ rl_clear_message ();
+ RL_UNSETSTATE(RL_STATE_NUMERICARG);
+ return 1;
+ }
+ return 0;
+}
+
+void
+_rl_arg_init ()
+{
+ rl_save_prompt ();
+ _rl_argcxt = 0;
+ RL_SETSTATE(RL_STATE_NUMERICARG);
+}
+
+int
+_rl_arg_getchar ()
+{
+ int c;
+
+ rl_message ("(arg: %d) ", rl_arg_sign * rl_numeric_arg);
+ RL_SETSTATE(RL_STATE_MOREINPUT);
+ c = rl_read_key ();
+ RL_UNSETSTATE(RL_STATE_MOREINPUT);
+
+ return c;
+}
+
+/* Process C as part of the current numeric argument. Return -1 if the
+ argument should be aborted, 0 if we should not read any more chars, and
+ 1 if we should continue to read chars. */
+int
+_rl_arg_dispatch (cxt, c)
+ _rl_arg_cxt cxt;
+ int c;
+{
+ int key, r;
+
+ key = c;
+
+ /* If we see a key bound to `universal-argument' after seeing digits,
+ it ends the argument but is otherwise ignored. */
+ if (_rl_keymap[c].type == ISFUNC && _rl_keymap[c].function == rl_universal_argument)
+ {
+ if ((cxt & NUM_SAWDIGITS) == 0)
+ {
+ rl_numeric_arg *= 4;
+ return 1;
+ }
+ else if (RL_ISSTATE (RL_STATE_CALLBACK))
+ {
+ _rl_argcxt |= NUM_READONE;
+ return 0; /* XXX */
+ }
+ else
+ {
+ RL_SETSTATE(RL_STATE_MOREINPUT);
+ key = rl_read_key ();
+ RL_UNSETSTATE(RL_STATE_MOREINPUT);
+ rl_restore_prompt ();
+ rl_clear_message ();
+ RL_UNSETSTATE(RL_STATE_NUMERICARG);
+ if (key < 0)
+ return -1;
+ return (_rl_dispatch (key, _rl_keymap));
+ }
+ }
+
+ c = UNMETA (c);
+
+ if (_rl_digit_p (c))
+ {
+ r = _rl_digit_value (c);
+ rl_numeric_arg = rl_explicit_arg ? (rl_numeric_arg * 10) + r : r;
+ rl_explicit_arg = 1;
+ _rl_argcxt |= NUM_SAWDIGITS;
+ }
+ else if (c == '-' && rl_explicit_arg == 0)
+ {
+ rl_numeric_arg = 1;
+ _rl_argcxt |= NUM_SAWMINUS;
+ rl_arg_sign = -1;
+ }
+ else
+ {
+ /* Make M-- command equivalent to M--1 command. */
+ if ((_rl_argcxt & NUM_SAWMINUS) && rl_numeric_arg == 1 && rl_explicit_arg == 0)
+ rl_explicit_arg = 1;
+ rl_restore_prompt ();
+ rl_clear_message ();
+ RL_UNSETSTATE(RL_STATE_NUMERICARG);
+
+ r = _rl_dispatch (key, _rl_keymap);
+ if (RL_ISSTATE (RL_STATE_CALLBACK))
+ {
+ /* At worst, this will cause an extra redisplay. Otherwise,
+ we have to wait until the next character comes in. */
+ if (rl_done == 0)
+ (*rl_redisplay_function) ();
+ r = 0;
+ }
+ return r;
+ }
+
+ return 1;
+}
+
+/* Handle C-u style numeric args, as well as M--, and M-digits. */
+static int
+rl_digit_loop ()
+{
+ int c, r;
+
+ while (1)
+ {
+ if (_rl_arg_overflow ())
+ return 1;
+
+ c = _rl_arg_getchar ();
+
+ if (c < 0)
+ {
+ _rl_abort_internal ();
+ return -1;
+ }
+
+ r = _rl_arg_dispatch (_rl_argcxt, c);
+ if (r <= 0 || (RL_ISSTATE (RL_STATE_NUMERICARG) == 0))
+ break;
+ }
+
+ return r;
+}
+
+/* Create a default argument. */
+void
+_rl_reset_argument ()
+{
+ rl_numeric_arg = rl_arg_sign = 1;
+ rl_explicit_arg = 0;
+ _rl_argcxt = 0;
+}
+
+/* Start a numeric argument with initial value KEY */
+int
+rl_digit_argument (ignore, key)
+ int ignore, key;
+{
+ _rl_arg_init ();
+ if (RL_ISSTATE (RL_STATE_CALLBACK))
+ {
+ _rl_arg_dispatch (_rl_argcxt, key);
+ rl_message ("(arg: %d) ", rl_arg_sign * rl_numeric_arg);
+ return 0;
+ }
+ else
+ {
+ rl_execute_next (key);
+ return (rl_digit_loop ());
+ }
+}
+
+/* C-u, universal argument. Multiply the current argument by 4.
+ Read a key. If the key has nothing to do with arguments, then
+ dispatch on it. If the key is the abort character then abort. */
+int
+rl_universal_argument (count, key)
+ int count, key;
+{
+ _rl_arg_init ();
+ rl_numeric_arg *= 4;
+
+ return (RL_ISSTATE (RL_STATE_CALLBACK) ? 0 : rl_digit_loop ());
+}
+
+int
+_rl_arg_callback (cxt)
+ _rl_arg_cxt cxt;
+{
+ int c, r;
+
+ c = _rl_arg_getchar ();
+
+ if (_rl_argcxt & NUM_READONE)
+ {
+ _rl_argcxt &= ~NUM_READONE;
+ rl_restore_prompt ();
+ rl_clear_message ();
+ RL_UNSETSTATE(RL_STATE_NUMERICARG);
+ rl_execute_next (c);
+ return 0;
+ }
+
+ r = _rl_arg_dispatch (cxt, c);
+ return (r != 1);
+}
+
+/* What to do when you abort reading an argument. */
+int
+rl_discard_argument ()
+{
+ rl_ding ();
+ rl_clear_message ();
+ _rl_reset_argument ();
+
+ return 0;
+}
+
+/* **************************************************************** */
+/* */
+/* History Utilities */
+/* */
+/* **************************************************************** */
+
+/* We already have a history library, and that is what we use to control
+ the history features of readline. This is our local interface to
+ the history mechanism. */
+
+/* While we are editing the history, this is the saved
+ version of the original line. */
+HIST_ENTRY *_rl_saved_line_for_history = (HIST_ENTRY *)NULL;
+
+/* Set the history pointer back to the last entry in the history. */
+void
+_rl_start_using_history ()
+{
+ using_history ();
+ if (_rl_saved_line_for_history)
+ _rl_free_history_entry (_rl_saved_line_for_history);
+
+ _rl_saved_line_for_history = (HIST_ENTRY *)NULL;
+}
+
+/* Free the contents (and containing structure) of a HIST_ENTRY. */
+void
+_rl_free_history_entry (entry)
+ HIST_ENTRY *entry;
+{
+ if (entry == 0)
+ return;
+
+ FREE (entry->line);
+ FREE (entry->timestamp);
+
+ xfree (entry);
+}
+
+/* Perhaps put back the current line if it has changed. */
+int
+rl_maybe_replace_line ()
+{
+ HIST_ENTRY *temp;
+
+ temp = current_history ();
+ /* If the current line has changed, save the changes. */
+ if (temp && ((UNDO_LIST *)(temp->data) != rl_undo_list))
+ {
+ temp = replace_history_entry (where_history (), rl_line_buffer, (histdata_t)rl_undo_list);
+ xfree (temp->line);
+ FREE (temp->timestamp);
+ xfree (temp);
+ }
+ return 0;
+}
+
+/* Restore the _rl_saved_line_for_history if there is one. */
+int
+rl_maybe_unsave_line ()
+{
+ if (_rl_saved_line_for_history)
+ {
+ /* Can't call with `1' because rl_undo_list might point to an undo
+ list from a history entry, as in rl_replace_from_history() below. */
+ rl_replace_line (_rl_saved_line_for_history->line, 0);
+ rl_undo_list = (UNDO_LIST *)_rl_saved_line_for_history->data;
+ _rl_free_history_entry (_rl_saved_line_for_history);
+ _rl_saved_line_for_history = (HIST_ENTRY *)NULL;
+ rl_point = rl_end; /* rl_replace_line sets rl_end */
+ }
+ else
+ rl_ding ();
+ return 0;
+}
+
+/* Save the current line in _rl_saved_line_for_history. */
+int
+rl_maybe_save_line ()
+{
+ if (_rl_saved_line_for_history == 0)
+ {
+ _rl_saved_line_for_history = (HIST_ENTRY *)xmalloc (sizeof (HIST_ENTRY));
+ _rl_saved_line_for_history->line = savestring (rl_line_buffer);
+ _rl_saved_line_for_history->timestamp = (char *)NULL;
+ _rl_saved_line_for_history->data = (char *)rl_undo_list;
+ }
+
+ return 0;
+}
+
+int
+_rl_free_saved_history_line ()
+{
+ if (_rl_saved_line_for_history)
+ {
+ _rl_free_history_entry (_rl_saved_line_for_history);
+ _rl_saved_line_for_history = (HIST_ENTRY *)NULL;
+ }
+ return 0;
+}
+
+static void
+_rl_history_set_point ()
+{
+ rl_point = (_rl_history_preserve_point && _rl_history_saved_point != -1)
+ ? _rl_history_saved_point
+ : rl_end;
+ if (rl_point > rl_end)
+ rl_point = rl_end;
+
+#if defined (VI_MODE)
+ if (rl_editing_mode == vi_mode && _rl_keymap != vi_insertion_keymap)
+ rl_point = 0;
+#endif /* VI_MODE */
+
+ if (rl_editing_mode == emacs_mode)
+ rl_mark = (rl_point == rl_end ? 0 : rl_end);
+}
+
+void
+rl_replace_from_history (entry, flags)
+ HIST_ENTRY *entry;
+ int flags; /* currently unused */
+{
+ /* Can't call with `1' because rl_undo_list might point to an undo list
+ from a history entry, just like we're setting up here. */
+ rl_replace_line (entry->line, 0);
+ rl_undo_list = (UNDO_LIST *)entry->data;
+ rl_point = rl_end;
+ rl_mark = 0;
+
+#if defined (VI_MODE)
+ if (rl_editing_mode == vi_mode)
+ {
+ rl_point = 0;
+ rl_mark = rl_end;
+ }
+#endif
+}
+
+/* Process and free undo lists attached to each history entry prior to the
+ current entry, inclusive, reverting each line to its saved state. This
+ is destructive, and state about the current line is lost. This is not
+ intended to be called while actively editing, and the current line is
+ not assumed to have been added to the history list. */
+void
+_rl_revert_all_lines ()
+{
+ int hpos;
+ HIST_ENTRY *entry;
+ UNDO_LIST *ul, *saved_undo_list;
+ char *lbuf;
+
+ lbuf = savestring (rl_line_buffer);
+ saved_undo_list = rl_undo_list;
+ hpos = where_history ();
+
+ entry = (hpos == history_length) ? previous_history () : current_history ();
+ while (entry)
+ {
+ if (ul = (UNDO_LIST *)entry->data)
+ {
+ if (ul == saved_undo_list)
+ saved_undo_list = 0;
+ /* Set up rl_line_buffer and other variables from history entry */
+ rl_replace_from_history (entry, 0); /* entry->line is now current */
+ /* Undo all changes to this history entry */
+ while (rl_undo_list)
+ rl_do_undo ();
+ /* And copy the reverted line back to the history entry, preserving
+ the timestamp. */
+ FREE (entry->line);
+ entry->line = savestring (rl_line_buffer);
+ entry->data = 0;
+ }
+ entry = previous_history ();
+ }
+
+ /* Restore history state */
+ rl_undo_list = saved_undo_list; /* may have been set to null */
+ history_set_pos (hpos);
+
+ /* reset the line buffer */
+ rl_replace_line (lbuf, 0);
+ _rl_set_the_line ();
+
+ /* and clean up */
+ xfree (lbuf);
+}
+
+/* **************************************************************** */
+/* */
+/* History Commands */
+/* */
+/* **************************************************************** */
+
+/* Meta-< goes to the start of the history. */
+int
+rl_beginning_of_history (count, key)
+ int count, key;
+{
+ return (rl_get_previous_history (1 + where_history (), key));
+}
+
+/* Meta-> goes to the end of the history. (The current line). */
+int
+rl_end_of_history (count, key)
+ int count, key;
+{
+ rl_maybe_replace_line ();
+ using_history ();
+ rl_maybe_unsave_line ();
+ return 0;
+}
+
+/* Move down to the next history line. */
+int
+rl_get_next_history (count, key)
+ int count, key;
+{
+ HIST_ENTRY *temp;
+
+ if (count < 0)
+ return (rl_get_previous_history (-count, key));
+
+ if (count == 0)
+ return 0;
+
+ rl_maybe_replace_line ();
+
+ /* either not saved by rl_newline or at end of line, so set appropriately. */
+ if (_rl_history_saved_point == -1 && (rl_point || rl_end))
+ _rl_history_saved_point = (rl_point == rl_end) ? -1 : rl_point;
+
+ temp = (HIST_ENTRY *)NULL;
+ while (count)
+ {
+ temp = next_history ();
+ if (!temp)
+ break;
+ --count;
+ }
+
+ if (temp == 0)
+ rl_maybe_unsave_line ();
+ else
+ {
+ rl_replace_from_history (temp, 0);
+ _rl_history_set_point ();
+ }
+ return 0;
+}
+
+/* Get the previous item out of our interactive history, making it the current
+ line. If there is no previous history, just ding. */
+int
+rl_get_previous_history (count, key)
+ int count, key;
+{
+ HIST_ENTRY *old_temp, *temp;
+
+ if (count < 0)
+ return (rl_get_next_history (-count, key));
+
+ if (count == 0)
+ return 0;
+
+ /* either not saved by rl_newline or at end of line, so set appropriately. */
+ if (_rl_history_saved_point == -1 && (rl_point || rl_end))
+ _rl_history_saved_point = (rl_point == rl_end) ? -1 : rl_point;
+
+ /* If we don't have a line saved, then save this one. */
+ rl_maybe_save_line ();
+
+ /* If the current line has changed, save the changes. */
+ rl_maybe_replace_line ();
+
+ temp = old_temp = (HIST_ENTRY *)NULL;
+ while (count)
+ {
+ temp = previous_history ();
+ if (temp == 0)
+ break;
+
+ old_temp = temp;
+ --count;
+ }
+
+ /* If there was a large argument, and we moved back to the start of the
+ history, that is not an error. So use the last value found. */
+ if (!temp && old_temp)
+ temp = old_temp;
+
+ if (temp == 0)
+ rl_ding ();
+ else
+ {
+ rl_replace_from_history (temp, 0);
+ _rl_history_set_point ();
+ }
+
+ return 0;
+}
+
+/* **************************************************************** */
+/* */
+/* Editing Modes */
+/* */
+/* **************************************************************** */
+/* How to toggle back and forth between editing modes. */
+int
+rl_vi_editing_mode (count, key)
+ int count, key;
+{
+#if defined (VI_MODE)
+ _rl_set_insert_mode (RL_IM_INSERT, 1); /* vi mode ignores insert mode */
+ rl_editing_mode = vi_mode;
+ rl_vi_insert_mode (1, key);
+#endif /* VI_MODE */
+
+ return 0;
+}
+
+int
+rl_emacs_editing_mode (count, key)
+ int count, key;
+{
+ rl_editing_mode = emacs_mode;
+ _rl_set_insert_mode (RL_IM_INSERT, 1); /* emacs mode default is insert mode */
+ _rl_keymap = emacs_standard_keymap;
+ return 0;
+}
+
+/* Function for the rest of the library to use to set insert/overwrite mode. */
+void
+_rl_set_insert_mode (im, force)
+ int im, force;
+{
+#ifdef CURSOR_MODE
+ _rl_set_cursor (im, force);
+#endif
+
+ rl_insert_mode = im;
+}
+
+/* Toggle overwrite mode. A positive explicit argument selects overwrite
+ mode. A negative or zero explicit argument selects insert mode. */
+int
+rl_overwrite_mode (count, key)
+ int count, key;
+{
+ if (rl_explicit_arg == 0)
+ _rl_set_insert_mode (rl_insert_mode ^ 1, 0);
+ else if (count > 0)
+ _rl_set_insert_mode (RL_IM_OVERWRITE, 0);
+ else
+ _rl_set_insert_mode (RL_IM_INSERT, 0);
+
+ return 0;
+}