Adding upstream version 5.2.15.upstream/5.2.15upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 1888 insertions, 0 deletions

diff --git a/lib/readline/text.c b/lib/readline/text.c
new file mode 100644
index 0000000..91c3f33
--- /dev/null
+++ b/lib/readline/text.c
@@ -0,0 +1,1888 @@
+/* text.c -- text handling commands for readline. */
+
+/* Copyright (C) 1987-2021 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"
+
+#if defined (__EMX__)
+#  define INCL_DOSPROCESS
+#  include <os2.h>
+#endif /* __EMX__ */
+
+/* Some standard library routines. */
+#include "readline.h"
+#include "history.h"
+
+#include "rlprivate.h"
+#include "rlshell.h"
+#include "xmalloc.h"
+
+/* Forward declarations. */
+static int rl_change_case (int, int);
+static int _rl_char_search (int, int, int);
+
+#if defined (READLINE_CALLBACKS)
+static int _rl_insert_next_callback (_rl_callback_generic_arg *);
+static int _rl_char_search_callback (_rl_callback_generic_arg *);
+#endif
+
+/* The largest chunk of text that can be inserted in one call to
+   rl_insert_text.  Text blocks larger than this are divided. */
+#define TEXT_COUNT_MAX	1024
+
+int _rl_optimize_typeahead = 1;	/* rl_insert tries to read typeahead */
+
+/* **************************************************************** */
+/*								    */
+/*			Insert and Delete			    */
+/*								    */
+/* **************************************************************** */
+
+/* Insert a string of text into the line at point.  This is the only
+   way that you should do insertion.  _rl_insert_char () calls this
+   function.  Returns the number of characters inserted. */
+int
+rl_insert_text (const char *string)
+{
+  register int i, l;
+
+  l = (string && *string) ? strlen (string) : 0;
+  if (l == 0)
+    return 0;
+
+  if (rl_end + l >= rl_line_buffer_len)
+    rl_extend_line_buffer (rl_end + l);
+
+  for (i = rl_end; i >= rl_point; i--)
+    rl_line_buffer[i + l] = rl_line_buffer[i];
+
+  strncpy (rl_line_buffer + rl_point, string, l);
+
+  /* Remember how to undo this if we aren't undoing something. */
+  if (_rl_doing_an_undo == 0)
+    {
+      /* If possible and desirable, concatenate the undos. */
+      if ((l == 1) &&
+	  rl_undo_list &&
+	  (rl_undo_list->what == UNDO_INSERT) &&
+	  (rl_undo_list->end == rl_point) &&
+	  (rl_undo_list->end - rl_undo_list->start < 20))
+	rl_undo_list->end++;
+      else
+	rl_add_undo (UNDO_INSERT, rl_point, rl_point + l, (char *)NULL);
+    }
+  rl_point += l;
+  rl_end += l;
+  rl_line_buffer[rl_end] = '\0';
+  return l;
+}
+
+/* Delete the string between FROM and TO.  FROM is inclusive, TO is not.
+   Returns the number of characters deleted. */
+int
+rl_delete_text (int from, int to)
+{
+  register char *text;
+  register int diff, i;
+
+  /* Fix it if the caller is confused. */
+  if (from > to)
+    SWAP (from, to);
+
+  /* fix boundaries */
+  if (to > rl_end)
+    {
+      to = rl_end;
+      if (from > to)
+	from = to;
+    }
+  if (from < 0)
+    from = 0;
+
+  text = rl_copy_text (from, to);
+
+  /* Some versions of strncpy() can't handle overlapping arguments. */
+  diff = to - from;
+  for (i = from; i < rl_end - diff; i++)
+    rl_line_buffer[i] = rl_line_buffer[i + diff];
+
+  /* Remember how to undo this delete. */
+  if (_rl_doing_an_undo == 0)
+    rl_add_undo (UNDO_DELETE, from, to, text);
+  else
+    xfree (text);
+
+  rl_end -= diff;
+  rl_line_buffer[rl_end] = '\0';
+  _rl_fix_mark ();
+  return (diff);
+}
+
+/* Fix up point so that it is within the line boundaries after killing
+   text.  If FIX_MARK_TOO is non-zero, the mark is forced within line
+   boundaries also. */
+
+#define _RL_FIX_POINT(x) \
+	do { \
+	if (x > rl_end) \
+	  x = rl_end; \
+	else if (x < 0) \
+	  x = 0; \
+	} while (0)
+
+void
+_rl_fix_point (int fix_mark_too)
+{
+  _RL_FIX_POINT (rl_point);
+  if (fix_mark_too)
+    _RL_FIX_POINT (rl_mark);
+}
+
+void
+_rl_fix_mark (void)
+{
+  _RL_FIX_POINT (rl_mark);
+}
+#undef _RL_FIX_POINT
+
+/* Replace the contents of the line buffer between START and END with
+   TEXT.  The operation is undoable.  To replace the entire line in an
+   undoable mode, use _rl_replace_text(text, 0, rl_end); */
+int
+_rl_replace_text (const char *text, int start, int end)
+{
+  int n;
+
+  n = 0;
+  rl_begin_undo_group ();
+  if (start <= end)
+    rl_delete_text (start, end + 1);
+  rl_point = start;
+  if (*text)
+    n = rl_insert_text (text);
+  rl_end_undo_group ();
+
+  return n;
+}
+
+/* Replace the current line buffer contents with TEXT.  If CLEAR_UNDO is
+   non-zero, we free the current undo list. */
+void
+rl_replace_line (const char *text, int clear_undo)
+{
+  int len;
+
+  len = strlen (text);
+  if (len >= rl_line_buffer_len)
+    rl_extend_line_buffer (len);
+  strcpy (rl_line_buffer, text);
+  rl_end = len;
+
+  if (clear_undo)
+    rl_free_undo_list ();
+
+  _rl_fix_point (1);
+}
+
+/* **************************************************************** */
+/*								    */
+/*			Readline character functions		    */
+/*								    */
+/* **************************************************************** */
+
+/* This is not a gap editor, just a stupid line input routine.  No hair
+   is involved in writing any of the functions, and none should be. */
+
+/* Note that:
+
+   rl_end is the place in the string that we would place '\0';
+   i.e., it is always safe to place '\0' there.
+
+   rl_point is the place in the string where the cursor is.  Sometimes
+   this is the same as rl_end.
+
+   Any command that is called interactively receives two arguments.
+   The first is a count: the numeric arg passed to this command.
+   The second is the key which invoked this command.
+*/
+
+/* **************************************************************** */
+/*								    */
+/*			Movement Commands			    */
+/*								    */
+/* **************************************************************** */
+
+/* Note that if you `optimize' the display for these functions, you cannot
+   use said functions in other functions which do not do optimizing display.
+   I.e., you will have to update the data base for rl_redisplay, and you
+   might as well let rl_redisplay do that job. */
+
+/* Move forward COUNT bytes. */
+int
+rl_forward_byte (int count, int key)
+{
+  if (count < 0)
+    return (rl_backward_byte (-count, key));
+
+  if (count > 0)
+    {
+      int end, lend;
+
+      end = rl_point + count;
+#if defined (VI_MODE)
+      lend = rl_end > 0 ? rl_end - (VI_COMMAND_MODE()) : rl_end;
+#else
+      lend = rl_end;
+#endif
+
+      if (end > lend)
+	{
+	  rl_point = lend;
+	  rl_ding ();
+	}
+      else
+	rl_point = end;
+    }
+
+  if (rl_end < 0)
+    rl_end = 0;
+
+  return 0;
+}
+
+int
+_rl_forward_char_internal (int count)
+{
+  int point;
+
+#if defined (HANDLE_MULTIBYTE)
+  point = _rl_find_next_mbchar (rl_line_buffer, rl_point, count, MB_FIND_NONZERO);
+
+#if defined (VI_MODE)
+  if (point >= rl_end && VI_COMMAND_MODE())
+    point = _rl_find_prev_mbchar (rl_line_buffer, rl_end, MB_FIND_NONZERO);
+#endif
+
+    if (rl_end < 0)
+      rl_end = 0;
+#else
+  point = rl_point + count;
+#endif
+
+  if (point > rl_end)
+    point = rl_end;
+  return (point);
+}
+
+int
+_rl_backward_char_internal (int count)
+{
+  int point;
+
+  point = rl_point;
+#if defined (HANDLE_MULTIBYTE)
+  if (count > 0)
+    {
+      while (count > 0 && point > 0)
+	{
+	  point = _rl_find_prev_mbchar (rl_line_buffer, point, MB_FIND_NONZERO);
+	  count--;
+	}
+      if (count > 0)
+        return 0;	/* XXX - rl_ding() here? */
+    }
+#else
+  if (count > 0)
+    point -= count;
+#endif
+
+  if (point < 0)
+    point = 0;
+  return (point);
+}
+
+#if defined (HANDLE_MULTIBYTE)
+/* Move forward COUNT characters. */
+int
+rl_forward_char (int count, int key)
+{
+  int point;
+
+  if (MB_CUR_MAX == 1 || rl_byte_oriented)
+    return (rl_forward_byte (count, key));
+
+  if (count < 0)
+    return (rl_backward_char (-count, key));
+
+  if (count > 0)
+    {
+      if (rl_point == rl_end && EMACS_MODE())
+	{
+	  rl_ding ();
+	  return 0;
+	}
+
+      point = _rl_forward_char_internal (count);
+
+      if (rl_point == point)
+	rl_ding ();
+
+      rl_point = point;
+    }
+
+  return 0;
+}
+#else /* !HANDLE_MULTIBYTE */
+int
+rl_forward_char (int count, int key)
+{
+  return (rl_forward_byte (count, key));
+}
+#endif /* !HANDLE_MULTIBYTE */
+  
+/* Backwards compatibility. */
+int
+rl_forward (int count, int key)
+{
+  return (rl_forward_char (count, key));
+}
+
+/* Move backward COUNT bytes. */
+int
+rl_backward_byte (int count, int key)
+{
+  if (count < 0)
+    return (rl_forward_byte (-count, key));
+
+  if (count > 0)
+    {
+      if (rl_point < count)
+	{
+	  rl_point = 0;
+	  rl_ding ();
+	}
+      else
+	rl_point -= count;
+    }
+
+  if (rl_point < 0)
+    rl_point = 0;
+
+  return 0;
+}
+
+#if defined (HANDLE_MULTIBYTE)
+/* Move backward COUNT characters. */
+int
+rl_backward_char (int count, int key)
+{
+  int point;
+
+  if (MB_CUR_MAX == 1 || rl_byte_oriented)
+    return (rl_backward_byte (count, key));
+
+  if (count < 0)
+    return (rl_forward_char (-count, key));
+
+  if (count > 0)
+    {
+      point = rl_point;
+
+      while (count > 0 && point > 0)
+	{
+	  point = _rl_find_prev_mbchar (rl_line_buffer, point, MB_FIND_NONZERO);
+	  count--;
+	}
+      if (count > 0)
+	{
+	  rl_point = 0;
+	  rl_ding ();
+	}
+      else
+        rl_point = point;
+    }
+
+  return 0;
+}
+#else
+int
+rl_backward_char (int count, int key)
+{
+  return (rl_backward_byte (count, key));
+}
+#endif
+
+/* Backwards compatibility. */
+int
+rl_backward (int count, int key)
+{
+  return (rl_backward_char (count, key));
+}
+
+/* Move to the beginning of the line. */
+int
+rl_beg_of_line (int count, int key)
+{
+  rl_point = 0;
+  return 0;
+}
+
+/* Move to the end of the line. */
+int
+rl_end_of_line (int count, int key)
+{
+  rl_point = rl_end;
+  return 0;
+}
+
+/* Move forward a word.  We do what Emacs does.  Handles multibyte chars. */
+int
+rl_forward_word (int count, int key)
+{
+  int c;
+
+  if (count < 0)
+    return (rl_backward_word (-count, key));
+
+  while (count)
+    {
+      if (rl_point > rl_end)
+	rl_point = rl_end;
+      if (rl_point == rl_end)
+	return 0;
+
+      /* If we are not in a word, move forward until we are in one.
+	 Then, move forward until we hit a non-alphabetic character. */
+      c = _rl_char_value (rl_line_buffer, rl_point);
+
+      if (_rl_walphabetic (c) == 0)
+	{
+	  rl_point = MB_NEXTCHAR (rl_line_buffer, rl_point, 1, MB_FIND_NONZERO);
+	  while (rl_point < rl_end)
+	    {
+	      c = _rl_char_value (rl_line_buffer, rl_point);
+	      if (_rl_walphabetic (c))
+		break;
+	      rl_point = MB_NEXTCHAR (rl_line_buffer, rl_point, 1, MB_FIND_NONZERO);
+	    }
+	}
+
+      if (rl_point > rl_end)
+	rl_point = rl_end;
+      if (rl_point == rl_end)
+	return 0;
+
+      rl_point = MB_NEXTCHAR (rl_line_buffer, rl_point, 1, MB_FIND_NONZERO);
+      while (rl_point < rl_end)
+	{
+	  c = _rl_char_value (rl_line_buffer, rl_point);
+	  if (_rl_walphabetic (c) == 0)
+	    break;
+	  rl_point = MB_NEXTCHAR (rl_line_buffer, rl_point, 1, MB_FIND_NONZERO);
+	}
+
+      --count;
+    }
+
+  return 0;
+}
+
+/* Move backward a word.  We do what Emacs does.  Handles multibyte chars. */
+int
+rl_backward_word (int count, int key)
+{
+  int c, p;
+
+  if (count < 0)
+    return (rl_forward_word (-count, key));
+
+  while (count)
+    {
+      if (rl_point == 0)
+	return 0;
+
+      /* Like rl_forward_word (), except that we look at the characters
+	 just before point. */
+
+      p = MB_PREVCHAR (rl_line_buffer, rl_point, MB_FIND_NONZERO);
+      c = _rl_char_value (rl_line_buffer, p);
+
+      if (_rl_walphabetic (c) == 0)
+	{
+	  rl_point = p;
+	  while (rl_point > 0)
+	    {
+	      p = MB_PREVCHAR (rl_line_buffer, rl_point, MB_FIND_NONZERO);
+	      c = _rl_char_value (rl_line_buffer, p);
+	      if (_rl_walphabetic (c))
+		break;
+	      rl_point = p;
+	    }
+	}
+
+      while (rl_point)
+	{
+	  p = MB_PREVCHAR (rl_line_buffer, rl_point, MB_FIND_NONZERO);
+	  c = _rl_char_value (rl_line_buffer, p);	  
+	  if (_rl_walphabetic (c) == 0)
+	    break;
+	  else
+	    rl_point = p;
+	}
+
+      --count;
+    }
+
+  return 0;
+}
+
+/* Clear the current line.  Numeric argument to C-l does this. */
+int
+rl_refresh_line (int ignore1, int ignore2)
+{
+  _rl_refresh_line ();
+  rl_display_fixed = 1;
+  return 0;
+}
+
+/* C-l typed to a line without quoting clears the screen, and then reprints
+   the prompt and the current input line.  Given a numeric arg, redraw only
+   the current line. */
+int
+rl_clear_screen (int count, int key)
+{
+  if (rl_explicit_arg)
+    {
+      rl_refresh_line (count, key);
+      return 0;
+    }
+
+  _rl_clear_screen (0);		/* calls termcap function to clear screen */
+  rl_keep_mark_active ();
+  rl_forced_update_display ();
+  rl_display_fixed = 1;
+
+  return 0;
+}
+
+int
+rl_clear_display (int count, int key)
+{
+  _rl_clear_screen (1);		/* calls termcap function to clear screen and scrollback buffer */
+  rl_forced_update_display ();
+  rl_display_fixed = 1;
+
+  return 0;
+}
+
+int
+rl_previous_screen_line (int count, int key)
+{
+  int c;
+
+  c = _rl_term_autowrap ? _rl_screenwidth : (_rl_screenwidth + 1);
+  return (rl_backward_char (c, key));
+}
+
+int
+rl_next_screen_line (int count, int key)
+{
+  int c;
+
+  c = _rl_term_autowrap ? _rl_screenwidth : (_rl_screenwidth + 1);
+  return (rl_forward_char (c, key));
+}
+
+int
+rl_skip_csi_sequence (int count, int key)
+{
+  int ch;
+
+  RL_SETSTATE (RL_STATE_MOREINPUT);
+  do
+    ch = rl_read_key ();
+  while (ch >= 0x20 && ch < 0x40);
+  RL_UNSETSTATE (RL_STATE_MOREINPUT);
+
+  return (ch < 0);
+}
+
+int
+rl_arrow_keys (int count, int key)
+{
+  int ch;
+
+  RL_SETSTATE(RL_STATE_MOREINPUT);
+  ch = rl_read_key ();
+  RL_UNSETSTATE(RL_STATE_MOREINPUT);
+  if (ch < 0)
+    return (1);
+
+  switch (_rl_to_upper (ch))
+    {
+    case 'A':
+      rl_get_previous_history (count, ch);
+      break;
+
+    case 'B':
+      rl_get_next_history (count, ch);
+      break;
+
+    case 'C':
+      if (MB_CUR_MAX > 1 && rl_byte_oriented == 0)
+	rl_forward_char (count, ch);
+      else
+	rl_forward_byte (count, ch);
+      break;
+
+    case 'D':
+      if (MB_CUR_MAX > 1 && rl_byte_oriented == 0)
+	rl_backward_char (count, ch);
+      else
+	rl_backward_byte (count, ch);
+      break;
+
+    default:
+      rl_ding ();
+    }
+
+  return 0;
+}
+
+/* **************************************************************** */
+/*								    */
+/*			Text commands				    */
+/*								    */
+/* **************************************************************** */
+
+#ifdef HANDLE_MULTIBYTE
+static char pending_bytes[MB_LEN_MAX];
+static int pending_bytes_length = 0;
+static mbstate_t ps = {0};
+#endif
+
+/* Insert the character C at the current location, moving point forward.
+   If C introduces a multibyte sequence, we read the whole sequence and
+   then insert the multibyte char into the line buffer. */
+int
+_rl_insert_char (int count, int c)
+{
+  register int i;
+  char *string;
+#ifdef HANDLE_MULTIBYTE
+  int string_size;
+  char incoming[MB_LEN_MAX + 1];
+  int incoming_length = 0;
+  mbstate_t ps_back;
+  static int stored_count = 0;
+#endif
+
+  if (count <= 0)
+    return 0;
+
+#if defined (HANDLE_MULTIBYTE)
+  if (MB_CUR_MAX == 1 || rl_byte_oriented)
+    {
+      incoming[0] = c;
+      incoming[1] = '\0';
+      incoming_length = 1;
+    }
+  else if (_rl_utf8locale && (c & 0x80) == 0)
+    {
+      incoming[0] = c;
+      incoming[1] = '\0';
+      incoming_length = 1;
+    }
+  else
+    {
+      WCHAR_T wc;
+      size_t ret;
+
+      if (stored_count <= 0)
+	stored_count = count;
+      else
+	count = stored_count;
+
+      ps_back = ps;
+      pending_bytes[pending_bytes_length++] = c;
+      ret = MBRTOWC (&wc, pending_bytes, pending_bytes_length, &ps);
+
+      if (ret == (size_t)-2)
+	{
+	  /* Bytes too short to compose character, try to wait for next byte.
+	     Restore the state of the byte sequence, because in this case the
+	     effect of mbstate is undefined. */
+	  ps = ps_back;
+	  return 1;
+	}
+      else if (ret == (size_t)-1)
+	{
+	  /* Invalid byte sequence for the current locale.  Treat first byte
+	     as a single character. */
+	  incoming[0] = pending_bytes[0];
+	  incoming[1] = '\0';
+	  incoming_length = 1;
+	  pending_bytes_length--;
+	  memmove (pending_bytes, pending_bytes + 1, pending_bytes_length);
+	  /* Clear the state of the byte sequence, because in this case the
+	     effect of mbstate is undefined. */
+	  memset (&ps, 0, sizeof (mbstate_t));
+	}
+      else if (ret == (size_t)0)
+	{
+	  incoming[0] = '\0';
+	  incoming_length = 0;
+	  pending_bytes_length--;
+	  /* Clear the state of the byte sequence, because in this case the
+	     effect of mbstate is undefined. */
+	  memset (&ps, 0, sizeof (mbstate_t));
+	}
+      else if (ret == 1)
+	{
+	  incoming[0] = pending_bytes[0];
+	  incoming[incoming_length = 1] = '\0';
+	  pending_bytes_length = 0;
+	}
+      else
+	{
+	  /* We successfully read a single multibyte character. */
+	  memcpy (incoming, pending_bytes, pending_bytes_length);
+	  incoming[pending_bytes_length] = '\0';
+	  incoming_length = pending_bytes_length;
+	  pending_bytes_length = 0;
+	}
+    }
+#endif /* HANDLE_MULTIBYTE */
+	  
+  /* If we can optimize, then do it.  But don't let people crash
+     readline because of extra large arguments. */
+  if (count > 1 && count <= TEXT_COUNT_MAX)
+    {
+#if defined (HANDLE_MULTIBYTE)
+      string_size = count * incoming_length;
+      string = (char *)xmalloc (1 + string_size);
+
+      i = 0;
+      while (i < string_size)
+	{
+	  if (incoming_length == 1)
+	    string[i++] = *incoming;
+	  else
+	    {
+	      strncpy (string + i, incoming, incoming_length);
+	      i += incoming_length;
+	    }
+	}
+      incoming_length = 0;
+      stored_count = 0;
+#else /* !HANDLE_MULTIBYTE */
+      string = (char *)xmalloc (1 + count);
+
+      for (i = 0; i < count; i++)
+	string[i] = c;
+#endif /* !HANDLE_MULTIBYTE */
+
+      string[i] = '\0';
+      rl_insert_text (string);
+      xfree (string);
+
+      return 0;
+    }
+
+  if (count > TEXT_COUNT_MAX)
+    {
+      int decreaser;
+#if defined (HANDLE_MULTIBYTE)
+      string_size = incoming_length * TEXT_COUNT_MAX;
+      string = (char *)xmalloc (1 + string_size);
+
+      i = 0;
+      while (i < string_size)
+	{
+	  if (incoming_length == 1)
+	    string[i++] = *incoming;
+	  else
+	    {
+	      strncpy (string + i, incoming, incoming_length);
+	      i += incoming_length;
+	    }
+	}
+
+      while (count)
+	{
+	  decreaser = (count > TEXT_COUNT_MAX) ? TEXT_COUNT_MAX : count;
+	  string[decreaser*incoming_length] = '\0';
+	  rl_insert_text (string);
+	  count -= decreaser;
+	}
+
+      xfree (string);
+      incoming_length = 0;
+      stored_count = 0;
+#else /* !HANDLE_MULTIBYTE */
+      char str[TEXT_COUNT_MAX+1];
+
+      for (i = 0; i < TEXT_COUNT_MAX; i++)
+	str[i] = c;
+
+      while (count)
+	{
+	  decreaser = (count > TEXT_COUNT_MAX ? TEXT_COUNT_MAX : count);
+	  str[decreaser] = '\0';
+	  rl_insert_text (str);
+	  count -= decreaser;
+	}
+#endif /* !HANDLE_MULTIBYTE */
+
+      return 0;
+    }
+
+  if (MB_CUR_MAX == 1 || rl_byte_oriented)
+    {
+      /* We are inserting a single character.
+	 If there is pending input, then make a string of all of the
+	 pending characters that are bound to rl_insert, and insert
+	 them all.  Don't do this if we're current reading input from
+	 a macro. */
+      if ((RL_ISSTATE (RL_STATE_MACROINPUT) == 0) && _rl_pushed_input_available ())
+	_rl_insert_typein (c);
+      else
+	{
+	  /* Inserting a single character. */
+	  char str[2];
+
+	  str[1] = '\0';
+	  str[0] = c;
+	  rl_insert_text (str);
+	}
+    }
+#if defined (HANDLE_MULTIBYTE)
+  else
+    {
+      rl_insert_text (incoming);
+      stored_count = 0;
+    }
+#endif
+
+  return 0;
+}
+
+/* Overwrite the character at point (or next COUNT characters) with C.
+   If C introduces a multibyte character sequence, read the entire sequence
+   before starting the overwrite loop. */
+int
+_rl_overwrite_char (int count, int c)
+{
+  int i;
+#if defined (HANDLE_MULTIBYTE)
+  char mbkey[MB_LEN_MAX];
+  int k;
+
+  /* Read an entire multibyte character sequence to insert COUNT times. */
+  k = 1;
+  if (count > 0 && MB_CUR_MAX > 1 && rl_byte_oriented == 0)
+    k = _rl_read_mbstring (c, mbkey, MB_LEN_MAX);
+  if (k < 0)
+    return 1;
+#endif
+
+  rl_begin_undo_group ();
+
+  for (i = 0; i < count; i++)
+    {
+#if defined (HANDLE_MULTIBYTE)
+      if (MB_CUR_MAX > 1 && rl_byte_oriented == 0)
+	rl_insert_text (mbkey);
+      else
+#endif
+	_rl_insert_char (1, c);
+
+      if (rl_point < rl_end)
+	rl_delete (1, c);
+    }
+
+  rl_end_undo_group ();
+
+  return 0;
+}
+
+int
+rl_insert (int count, int c)
+{
+  int r, n, x;
+
+  r = (rl_insert_mode == RL_IM_INSERT) ? _rl_insert_char (count, c) : _rl_overwrite_char (count, c);
+
+  /* XXX -- attempt to batch-insert pending input that maps to self-insert */
+  x = 0;
+  n = (unsigned short)-2;
+  while (_rl_optimize_typeahead &&
+	 rl_num_chars_to_read == 0 &&
+	 (RL_ISSTATE (RL_STATE_INPUTPENDING|RL_STATE_MACROINPUT) == 0) &&
+	 _rl_pushed_input_available () == 0 &&
+	 _rl_input_queued (0) &&
+	 (n = rl_read_key ()) > 0 &&
+	 _rl_keymap[(unsigned char)n].type == ISFUNC &&
+	 _rl_keymap[(unsigned char)n].function == rl_insert)
+    {
+      r = (rl_insert_mode == RL_IM_INSERT) ? _rl_insert_char (1, n) : _rl_overwrite_char (1, n);
+      /* _rl_insert_char keeps its own set of pending characters to compose a
+	 complete multibyte character, and only returns 1 if it sees a character
+	 that's part of a multibyte character but too short to complete one.  We
+	 can try to read another character in the hopes that we will get the
+	 next one or just punt.  Right now we try to read another character.
+	 We don't want to call rl_insert_next if _rl_insert_char has already
+	 stored the character in the pending_bytes array because that will
+	 result in doubled input. */
+      n = (unsigned short)-2;
+      x++;		/* count of bytes of typeahead read, currently unused */
+      if (r == 1)	/* read partial multibyte character */
+	continue;
+      if (rl_done || r != 0)
+	break;
+    }
+
+  if (n != (unsigned short)-2)		/* -2 = sentinel value for having inserted N */
+    {
+      /* setting rl_pending_input inhibits setting rl_last_func so we do it
+	 ourselves here */
+      rl_last_func = rl_insert; 
+      _rl_reset_argument ();
+      rl_executing_keyseq[rl_key_sequence_length = 0] = '\0';
+      r = rl_execute_next (n);
+    }
+
+  return r;
+}
+
+/* Insert the next typed character verbatim. */
+static int
+_rl_insert_next (int count)
+{
+  int c;
+
+  RL_SETSTATE(RL_STATE_MOREINPUT);
+  c = rl_read_key ();
+  RL_UNSETSTATE(RL_STATE_MOREINPUT);
+
+  if (c < 0)
+    return 1;
+
+  if (RL_ISSTATE (RL_STATE_MACRODEF))
+    _rl_add_macro_char (c);
+
+#if defined (HANDLE_SIGNALS)
+  if (RL_ISSTATE (RL_STATE_CALLBACK) == 0)
+    _rl_restore_tty_signals ();
+#endif
+
+  return (_rl_insert_char (count, c));  
+}
+
+#if defined (READLINE_CALLBACKS)
+static int
+_rl_insert_next_callback (_rl_callback_generic_arg *data)
+{
+  int count, r;
+
+  count = data->count;
+  r = 0;
+
+  if (count < 0)
+    {
+      data->count++;
+      r = _rl_insert_next (1);
+      _rl_want_redisplay = 1;
+      /* If we should keep going, leave the callback function installed */
+      if (data->count < 0 && r == 0)
+	return r;
+      count = 0;	/* data->count == 0 || r != 0; force break below */
+    }
+
+  /* Deregister function, let rl_callback_read_char deallocate data */
+  _rl_callback_func = 0;
+  _rl_want_redisplay = 1;
+
+  if (count == 0)
+    return r;
+
+  return _rl_insert_next (count);
+}
+#endif
+  
+int
+rl_quoted_insert (int count, int key)
+{
+  /* Let's see...should the callback interface futz with signal handling? */
+#if defined (HANDLE_SIGNALS)
+  if (RL_ISSTATE (RL_STATE_CALLBACK) == 0)
+    _rl_disable_tty_signals ();
+#endif
+
+#if defined (READLINE_CALLBACKS)
+  if (RL_ISSTATE (RL_STATE_CALLBACK))
+    {
+      _rl_callback_data = _rl_callback_data_alloc (count);
+      _rl_callback_func = _rl_insert_next_callback;
+      return (0);
+    }
+#endif
+
+  /* A negative count means to quote the next -COUNT characters. */
+  if (count < 0)
+    {
+      int r;
+
+      do
+	r = _rl_insert_next (1);
+      while (r == 0 && ++count < 0);
+      return r;
+    }
+
+  return _rl_insert_next (count);
+}
+
+/* Insert a tab character. */
+int
+rl_tab_insert (int count, int key)
+{
+  return (_rl_insert_char (count, '\t'));
+}
+
+/* What to do when a NEWLINE is pressed.  We accept the whole line.
+   KEY is the key that invoked this command.  I guess it could have
+   meaning in the future. */
+int
+rl_newline (int count, int key)
+{
+  if (rl_mark_active_p ())
+    {
+      rl_deactivate_mark ();
+      (*rl_redisplay_function) ();
+      _rl_want_redisplay = 0;
+    }
+
+  rl_done = 1;
+
+  if (_rl_history_preserve_point)
+    _rl_history_saved_point = (rl_point == rl_end) ? -1 : rl_point;
+
+  RL_SETSTATE(RL_STATE_DONE);
+
+#if defined (VI_MODE)
+  if (rl_editing_mode == vi_mode)
+    {
+      _rl_vi_done_inserting ();
+      if (_rl_vi_textmod_command (_rl_vi_last_command) == 0)	/* XXX */
+	_rl_vi_reset_last ();
+    }
+#endif /* VI_MODE */
+
+  /* If we've been asked to erase empty lines, suppress the final update,
+     since _rl_update_final calls rl_crlf(). */
+  if (rl_erase_empty_line && rl_point == 0 && rl_end == 0)
+    return 0;
+
+  if (_rl_echoing_p)
+    _rl_update_final ();
+  return 0;
+}
+
+/* What to do for some uppercase characters, like meta characters,
+   and some characters appearing in emacs_ctlx_keymap.  This function
+   is just a stub, you bind keys to it and the code in _rl_dispatch ()
+   is special cased. */
+int
+rl_do_lowercase_version (int ignore1, int ignore2)
+{
+  return 99999;		/* prevent from being combined with _rl_null_function */
+}
+
+/* This is different from what vi does, so the code's not shared.  Emacs
+   rubout in overwrite mode has one oddity:  it replaces a control
+   character that's displayed as two characters (^X) with two spaces. */
+int
+_rl_overwrite_rubout (int count, int key)
+{
+  int opoint;
+  int i, l;
+
+  if (rl_point == 0)
+    {
+      rl_ding ();
+      return 1;
+    }
+
+  opoint = rl_point;
+
+  /* L == number of spaces to insert */
+  for (i = l = 0; i < count; i++)
+    {
+      rl_backward_char (1, key);
+      l += rl_character_len (rl_line_buffer[rl_point], rl_point);	/* not exactly right */
+    }
+
+  rl_begin_undo_group ();
+
+  if (count > 1 || rl_explicit_arg)
+    rl_kill_text (opoint, rl_point);
+  else
+    rl_delete_text (opoint, rl_point);
+
+  /* Emacs puts point at the beginning of the sequence of spaces. */
+  if (rl_point < rl_end)
+    {
+      opoint = rl_point;
+      _rl_insert_char (l, ' ');
+      rl_point = opoint;
+    }
+
+  rl_end_undo_group ();
+
+  return 0;
+}
+  
+/* Rubout the character behind point. */
+int
+rl_rubout (int count, int key)
+{
+  if (count < 0)
+    return (rl_delete (-count, key));
+
+  if (!rl_point)
+    {
+      rl_ding ();
+      return 1;
+    }
+
+  if (rl_insert_mode == RL_IM_OVERWRITE)
+    return (_rl_overwrite_rubout (count, key));
+
+  return (_rl_rubout_char (count, key));
+}
+
+int
+_rl_rubout_char (int count, int key)
+{
+  int orig_point;
+  unsigned char c;
+
+  /* Duplicated code because this is called from other parts of the library. */
+  if (count < 0)
+    return (rl_delete (-count, key));
+
+  if (rl_point == 0)
+    {
+      rl_ding ();
+      return 1;
+    }
+
+  orig_point = rl_point;
+  if (count > 1 || rl_explicit_arg)
+    {
+      rl_backward_char (count, key);
+      rl_kill_text (orig_point, rl_point);
+    }
+  else if (MB_CUR_MAX == 1 || rl_byte_oriented)
+    {
+      c = rl_line_buffer[--rl_point];
+      rl_delete_text (rl_point, orig_point);
+      /* The erase-at-end-of-line hack is of questionable merit now. */
+      if (rl_point == rl_end && ISPRINT ((unsigned char)c) && _rl_last_c_pos)
+	{
+	  int l;
+	  l = rl_character_len (c, rl_point);
+	  _rl_erase_at_end_of_line (l);
+	}
+    }
+  else
+    {
+      rl_point = _rl_find_prev_mbchar (rl_line_buffer, rl_point, MB_FIND_NONZERO);
+      rl_delete_text (rl_point, orig_point);
+    }
+
+  return 0;
+}
+
+/* Delete the character under the cursor.  Given a numeric argument,
+   kill that many characters instead. */
+int
+rl_delete (int count, int key)
+{
+  int xpoint;
+
+  if (count < 0)
+    return (_rl_rubout_char (-count, key));
+
+  if (rl_point == rl_end)
+    {
+      rl_ding ();
+      return 1;
+    }
+
+  if (count > 1 || rl_explicit_arg)
+    {
+      xpoint = rl_point;
+      if (MB_CUR_MAX > 1 && rl_byte_oriented == 0)
+	rl_forward_char (count, key);
+      else
+	rl_forward_byte (count, key);
+
+      rl_kill_text (xpoint, rl_point);
+      rl_point = xpoint;
+    }
+  else
+    {
+      xpoint = MB_NEXTCHAR (rl_line_buffer, rl_point, 1, MB_FIND_NONZERO);
+      rl_delete_text (rl_point, xpoint);
+    }
+  return 0;
+}
+
+/* Delete the character under the cursor, unless the insertion
+   point is at the end of the line, in which case the character
+   behind the cursor is deleted.  COUNT is obeyed and may be used
+   to delete forward or backward that many characters. */      
+int
+rl_rubout_or_delete (int count, int key)
+{
+  if (rl_end != 0 && rl_point == rl_end)
+    return (_rl_rubout_char (count, key));
+  else
+    return (rl_delete (count, key));
+}  
+
+/* Delete all spaces and tabs around point. */
+int
+rl_delete_horizontal_space (int count, int ignore)
+{
+  int start;
+
+  while (rl_point && whitespace (rl_line_buffer[rl_point - 1]))
+    rl_point--;
+
+  start = rl_point;
+
+  while (rl_point < rl_end && whitespace (rl_line_buffer[rl_point]))
+    rl_point++;
+
+  if (start != rl_point)
+    {
+      rl_delete_text (start, rl_point);
+      rl_point = start;
+    }
+
+  if (rl_point < 0)
+    rl_point = 0;
+
+  return 0;
+}
+
+/* Like the tcsh editing function delete-char-or-list.  The eof character
+   is caught before this is invoked, so this really does the same thing as
+   delete-char-or-list-or-eof, as long as it's bound to the eof character. */
+int
+rl_delete_or_show_completions (int count, int key)
+{
+  if (rl_end != 0 && rl_point == rl_end)
+    return (rl_possible_completions (count, key));
+  else
+    return (rl_delete (count, key));
+}
+
+#ifndef RL_COMMENT_BEGIN_DEFAULT
+#define RL_COMMENT_BEGIN_DEFAULT "#"
+#endif
+
+/* Turn the current line into a comment in shell history.
+   A K*rn shell style function. */
+int
+rl_insert_comment (int count, int key)
+{
+  char *rl_comment_text;
+  int rl_comment_len;
+
+  rl_beg_of_line (1, key);
+  rl_comment_text = _rl_comment_begin ? _rl_comment_begin : RL_COMMENT_BEGIN_DEFAULT;
+
+  if (rl_explicit_arg == 0)
+    rl_insert_text (rl_comment_text);
+  else
+    {
+      rl_comment_len = strlen (rl_comment_text);
+      if (STREQN (rl_comment_text, rl_line_buffer, rl_comment_len))
+	rl_delete_text (rl_point, rl_point + rl_comment_len);
+      else
+	rl_insert_text (rl_comment_text);
+    }
+
+  (*rl_redisplay_function) ();
+  rl_newline (1, '\n');
+
+  return (0);
+}
+
+/* **************************************************************** */
+/*								    */
+/*			Changing Case				    */
+/*								    */
+/* **************************************************************** */
+
+/* The three kinds of things that we know how to do. */
+#define UpCase 1
+#define DownCase 2
+#define CapCase 3
+
+/* Uppercase the word at point. */
+int
+rl_upcase_word (int count, int key)
+{
+  return (rl_change_case (count, UpCase));
+}
+
+/* Lowercase the word at point. */
+int
+rl_downcase_word (int count, int key)
+{
+  return (rl_change_case (count, DownCase));
+}
+
+/* Upcase the first letter, downcase the rest. */
+int
+rl_capitalize_word (int count, int key)
+{
+ return (rl_change_case (count, CapCase));
+}
+
+/* The meaty function.
+   Change the case of COUNT words, performing OP on them.
+   OP is one of UpCase, DownCase, or CapCase.
+   If a negative argument is given, leave point where it started,
+   otherwise, leave it where it moves to. */
+static int
+rl_change_case (int count, int op)
+{
+  int start, next, end;
+  int inword, nc, nop;
+  WCHAR_T c;
+#if defined (HANDLE_MULTIBYTE)
+  WCHAR_T wc, nwc;
+  char mb[MB_LEN_MAX+1];
+  int mlen;
+  size_t m;
+  mbstate_t mps;
+#endif
+
+  start = rl_point;
+  rl_forward_word (count, 0);
+  end = rl_point;
+
+  if (op != UpCase && op != DownCase && op != CapCase)
+    {
+      rl_ding ();
+      return 1;
+    }
+
+  if (count < 0)
+    SWAP (start, end);
+
+#if defined (HANDLE_MULTIBYTE)
+  memset (&mps, 0, sizeof (mbstate_t));
+#endif
+
+  /* We are going to modify some text, so let's prepare to undo it. */
+  rl_modifying (start, end);
+
+  inword = 0;
+  while (start < end)
+    {
+      c = _rl_char_value (rl_line_buffer, start);
+      /*  This assumes that the upper and lower case versions are the same width. */
+      next = MB_NEXTCHAR (rl_line_buffer, start, 1, MB_FIND_NONZERO);
+
+      if (_rl_walphabetic (c) == 0)
+	{
+	  inword = 0;
+	  start = next;
+	  continue;
+	}
+
+      if (op == CapCase)
+	{
+	  nop = inword ? DownCase : UpCase;
+	  inword = 1;
+	}
+      else
+	nop = op;
+      /* Can't check isascii here; some languages (e.g, Turkish) have
+	 multibyte upper and lower case equivalents of single-byte ascii
+	 characters */
+      if (MB_CUR_MAX == 1 || rl_byte_oriented)
+	{
+	  nc = (nop == UpCase) ? _rl_to_upper (c) : _rl_to_lower (c);
+	  rl_line_buffer[start] = nc;
+	}
+#if defined (HANDLE_MULTIBYTE)
+      else
+	{
+	  m = MBRTOWC (&wc, rl_line_buffer + start, end - start, &mps);
+	  if (MB_INVALIDCH (m))
+	    wc = (WCHAR_T)rl_line_buffer[start];
+	  else if (MB_NULLWCH (m))
+	    wc = L'\0';
+	  nwc = (nop == UpCase) ? _rl_to_wupper (wc) : _rl_to_wlower (wc);
+	  if  (nwc != wc)	/*  just skip unchanged characters */
+	    {
+	      char *s, *e;
+	      mbstate_t ts;
+
+	      memset (&ts, 0, sizeof (mbstate_t));
+	      mlen = WCRTOMB (mb, nwc, &ts);
+	      if (mlen < 0)
+		{
+		  nwc = wc;
+		  memset (&ts, 0, sizeof (mbstate_t));
+		  mlen = WCRTOMB (mb, nwc, &ts);
+		  if (mlen < 0)		/* should not happen */
+		    strncpy (mb, rl_line_buffer + start, mlen = m);
+		}
+	      if (mlen > 0)
+		mb[mlen] = '\0';
+	      /* what to do if m != mlen? adjust below */
+	      /* m == length of old char, mlen == length of new char */
+	      s = rl_line_buffer + start;
+	      e = rl_line_buffer + rl_end;
+	      if (m == mlen)
+		memcpy (s, mb, mlen);
+	      else if (m > mlen)
+		{
+		  memcpy (s, mb, mlen);
+		  memmove (s + mlen, s + m, (e - s) - m);
+		  next -= m - mlen;	/* next char changes */
+		  end -= m - mlen;	/* end of word changes */
+		  rl_end -= m - mlen;	/* end of line changes */
+		  rl_line_buffer[rl_end] = 0;
+		}
+	      else if (m < mlen)
+		{
+		  rl_extend_line_buffer (rl_end + mlen + (e - s) - m + 2);
+		  s = rl_line_buffer + start;	/* have to redo this */
+		  e = rl_line_buffer + rl_end;
+		  memmove (s + mlen, s + m, (e - s) - m);
+		  memcpy (s, mb, mlen);
+		  next += mlen - m;	/* next char changes */
+		  end += mlen - m;	/* end of word changes */
+		  rl_end += mlen - m;	/* end of line changes */
+		  rl_line_buffer[rl_end] = 0;
+		}
+	    }
+	}
+#endif
+
+      start = next;
+    }
+
+  rl_point = end;
+  return 0;
+}
+
+/* **************************************************************** */
+/*								    */
+/*			Transposition				    */
+/*								    */
+/* **************************************************************** */
+
+/* Transpose the words at point.  If point is at the end of the line,
+   transpose the two words before point. */
+int
+rl_transpose_words (int count, int key)
+{
+  char *word1, *word2;
+  int w1_beg, w1_end, w2_beg, w2_end;
+  int orig_point, orig_end;
+
+  orig_point = rl_point;
+  orig_end = rl_end;
+
+  if (!count)
+    return 0;
+
+  /* Find the two words. */
+  rl_forward_word (count, key);
+  w2_end = rl_point;
+  rl_backward_word (1, key);
+  w2_beg = rl_point;
+  rl_backward_word (count, key);
+  w1_beg = rl_point;
+  rl_forward_word (1, key);
+  w1_end = rl_point;
+
+  /* Do some check to make sure that there really are two words. */
+  if ((w1_beg == w2_beg) || (w2_beg < w1_end))
+    {
+      rl_ding ();
+      rl_point = orig_point;
+      return 1;
+    }
+
+  /* Get the text of the words. */
+  word1 = rl_copy_text (w1_beg, w1_end);
+  word2 = rl_copy_text (w2_beg, w2_end);
+
+  /* We are about to do many insertions and deletions.  Remember them
+     as one operation. */
+  rl_begin_undo_group ();
+
+  /* Do the stuff at word2 first, so that we don't have to worry
+     about word1 moving. */
+  rl_point = w2_beg;
+  rl_delete_text (w2_beg, w2_end);
+  rl_insert_text (word1);
+
+  rl_point = w1_beg;
+  rl_delete_text (w1_beg, w1_end);
+  rl_insert_text (word2);
+
+  /* This is exactly correct since the text before this point has not
+     changed in length. */
+  rl_point = w2_end;
+  rl_end = orig_end;		/* just make sure */
+
+  /* I think that does it. */
+  rl_end_undo_group ();
+  xfree (word1);
+  xfree (word2);
+
+  return 0;
+}
+
+/* Transpose the characters at point.  If point is at the end of the line,
+   then transpose the characters before point. */
+int
+rl_transpose_chars (int count, int key)
+{
+#if defined (HANDLE_MULTIBYTE)
+  char *dummy;
+  int i;
+#else
+  char dummy[2];
+#endif
+  int char_length, prev_point;
+
+  if (count == 0)
+    return 0;
+
+  if (!rl_point || rl_end < 2)
+    {
+      rl_ding ();
+      return 1;
+    }
+
+  rl_begin_undo_group ();
+
+  if (rl_point == rl_end)
+    {
+      rl_point = MB_PREVCHAR (rl_line_buffer, rl_point, MB_FIND_NONZERO);
+      count = 1;
+    }
+
+  prev_point = rl_point;
+  rl_point = MB_PREVCHAR (rl_line_buffer, rl_point, MB_FIND_NONZERO);
+
+#if defined (HANDLE_MULTIBYTE)
+  char_length = prev_point - rl_point;
+  dummy = (char *)xmalloc (char_length + 1);
+  for (i = 0; i < char_length; i++)
+    dummy[i] = rl_line_buffer[rl_point + i];
+  dummy[i] = '\0';
+#else
+  dummy[0] = rl_line_buffer[rl_point];
+  dummy[char_length = 1] = '\0';
+#endif
+
+  rl_delete_text (rl_point, rl_point + char_length);
+
+  rl_point = _rl_find_next_mbchar (rl_line_buffer, rl_point, count, MB_FIND_NONZERO);
+
+  _rl_fix_point (0);
+  rl_insert_text (dummy);
+  rl_end_undo_group ();
+
+#if defined (HANDLE_MULTIBYTE)
+  xfree (dummy);
+#endif
+
+  return 0;
+}
+
+/* **************************************************************** */
+/*								    */
+/*			Character Searching			    */
+/*								    */
+/* **************************************************************** */
+
+int
+#if defined (HANDLE_MULTIBYTE)
+_rl_char_search_internal (int count, int dir, char *smbchar, int len)
+#else
+_rl_char_search_internal (int count, int dir, int schar)
+#endif
+{
+  int pos, inc;
+#if defined (HANDLE_MULTIBYTE)
+  int prepos;
+#endif
+
+  if (dir == 0)
+    return 1;
+
+  pos = rl_point;
+  inc = (dir < 0) ? -1 : 1;
+  while (count)
+    {
+      if ((dir < 0 && pos <= 0) || (dir > 0 && pos >= rl_end))
+	{
+	  rl_ding ();
+	  return 1;
+	}
+
+#if defined (HANDLE_MULTIBYTE)
+      pos = (inc > 0) ? _rl_find_next_mbchar (rl_line_buffer, pos, 1, MB_FIND_ANY)
+		      : _rl_find_prev_mbchar (rl_line_buffer, pos, MB_FIND_ANY);
+#else
+      pos += inc;
+#endif
+      do
+	{
+#if defined (HANDLE_MULTIBYTE)
+	  if (_rl_is_mbchar_matched (rl_line_buffer, pos, rl_end, smbchar, len))
+#else
+	  if (rl_line_buffer[pos] == schar)
+#endif
+	    {
+	      count--;
+	      if (dir < 0)
+	        rl_point = (dir == BTO) ? _rl_find_next_mbchar (rl_line_buffer, pos, 1, MB_FIND_ANY)
+					: pos;
+	      else
+		rl_point = (dir == FTO) ? _rl_find_prev_mbchar (rl_line_buffer, pos, MB_FIND_ANY)
+					: pos;
+	      break;
+	    }
+#if defined (HANDLE_MULTIBYTE)
+	  prepos = pos;
+#endif
+	}
+#if defined (HANDLE_MULTIBYTE)
+      while ((dir < 0) ? (pos = _rl_find_prev_mbchar (rl_line_buffer, pos, MB_FIND_ANY)) != prepos
+		       : (pos = _rl_find_next_mbchar (rl_line_buffer, pos, 1, MB_FIND_ANY)) != prepos);
+#else
+      while ((dir < 0) ? pos-- : ++pos < rl_end);
+#endif
+    }
+  return (0);
+}
+
+/* Search COUNT times for a character read from the current input stream.
+   FDIR is the direction to search if COUNT is non-negative; otherwise
+   the search goes in BDIR.  So much is dependent on HANDLE_MULTIBYTE
+   that there are two separate versions of this function. */
+#if defined (HANDLE_MULTIBYTE)
+static int
+_rl_char_search (int count, int fdir, int bdir)
+{
+  char mbchar[MB_LEN_MAX];
+  int mb_len;
+
+  mb_len = _rl_read_mbchar (mbchar, MB_LEN_MAX);
+
+  if (mb_len <= 0)
+    return 1;
+
+  if (count < 0)
+    return (_rl_char_search_internal (-count, bdir, mbchar, mb_len));
+  else
+    return (_rl_char_search_internal (count, fdir, mbchar, mb_len));
+}
+#else /* !HANDLE_MULTIBYTE */
+static int
+_rl_char_search (int count, int fdir, int bdir)
+{
+  int c;
+
+  c = _rl_bracketed_read_key ();
+  if (c < 0)
+    return 1;
+
+  if (count < 0)
+    return (_rl_char_search_internal (-count, bdir, c));
+  else
+    return (_rl_char_search_internal (count, fdir, c));
+}
+#endif /* !HANDLE_MULTIBYTE */
+
+#if defined (READLINE_CALLBACKS)
+static int
+_rl_char_search_callback (data)
+     _rl_callback_generic_arg *data;
+{
+  _rl_callback_func = 0;
+  _rl_want_redisplay = 1;
+
+  return (_rl_char_search (data->count, data->i1, data->i2));
+}
+#endif
+
+int
+rl_char_search (int count, int key)
+{
+#if defined (READLINE_CALLBACKS)
+  if (RL_ISSTATE (RL_STATE_CALLBACK))
+    {
+      _rl_callback_data = _rl_callback_data_alloc (count);
+      _rl_callback_data->i1 = FFIND;
+      _rl_callback_data->i2 = BFIND;
+      _rl_callback_func = _rl_char_search_callback;
+      return (0);
+    }
+#endif
+  
+  return (_rl_char_search (count, FFIND, BFIND));
+}
+
+int
+rl_backward_char_search (int count, int key)
+{
+#if defined (READLINE_CALLBACKS)
+  if (RL_ISSTATE (RL_STATE_CALLBACK))
+    {
+      _rl_callback_data = _rl_callback_data_alloc (count);
+      _rl_callback_data->i1 = BFIND;
+      _rl_callback_data->i2 = FFIND;
+      _rl_callback_func = _rl_char_search_callback;
+      return (0);
+    }
+#endif
+
+  return (_rl_char_search (count, BFIND, FFIND));
+}
+
+/* **************************************************************** */
+/*								    */
+/*		   The Mark and the Region.			    */
+/*								    */
+/* **************************************************************** */
+
+/* Set the mark at POSITION. */
+int
+_rl_set_mark_at_pos (int position)
+{
+  if (position < 0 || position > rl_end)
+    return 1;
+
+  rl_mark = position;
+  return 0;
+}
+
+/* A bindable command to set the mark. */
+int
+rl_set_mark (int count, int key)
+{
+  return (_rl_set_mark_at_pos (rl_explicit_arg ? count : rl_point));
+}
+
+/* Exchange the position of mark and point. */
+int
+rl_exchange_point_and_mark (int count, int key)
+{
+  if (rl_mark > rl_end)
+    rl_mark = -1;
+
+  if (rl_mark < 0)
+    {
+      rl_ding ();
+      rl_mark = 0;		/* like _RL_FIX_POINT */
+      return 1;
+    }
+  else
+    {
+      SWAP (rl_point, rl_mark);
+      rl_activate_mark ();
+    }
+
+  return 0;
+}
+
+/* Active mark support */
+
+/* Is the region active? */
+static int mark_active = 0;
+
+/* Does the current command want the mark to remain active when it completes? */
+int _rl_keep_mark_active;
+
+void
+rl_keep_mark_active (void)
+{
+  _rl_keep_mark_active++;
+}
+
+void
+rl_activate_mark (void)
+{
+  mark_active = 1;
+  rl_keep_mark_active ();
+}
+
+void
+rl_deactivate_mark (void)
+{
+  mark_active = 0;
+}
+
+int
+rl_mark_active_p (void)
+{
+  return (mark_active);
+}