cleanup: remove libedit, move readline to extra/

1 files changed, 0 insertions, 2452 deletions

diff --git a/cmd-line-utils/readline/display.c b/cmd-line-utils/readline/display.c
deleted file mode 100644
index 4226cdae5a2..00000000000
--- a/cmd-line-utils/readline/display.c
+++ /dev/null
@@ -1,2452 +0,0 @@
-/* display.c -- readline redisplay facility. */
-
-/* Copyright (C) 1987-2006 Free Software Foundation, Inc.
-
-   This file is part of the GNU Readline Library, a library for
-   reading lines of text with interactive input and history editing.
-
-   The GNU Readline Library 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 2, or
-   (at your option) any later version.
-
-   The GNU Readline Library 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.
-
-   The GNU General Public License is often shipped with GNU software, and
-   is generally kept in a file called COPYING or LICENSE.  If you do not
-   have a copy of the license, write to the Free Software Foundation,
-   51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA. */
-#define READLINE_LIBRARY
-
-#if defined (HAVE_CONFIG_H)
-#  include "config_readline.h"
-#endif
-
-#include <sys/types.h>
-
-#if defined (HAVE_UNISTD_H)
-#  include <unistd.h>
-#endif /* HAVE_UNISTD_H */
-
-#include "posixstat.h"
-
-#if defined (HAVE_STDLIB_H)
-#  include <stdlib.h>
-#else
-#  include "ansi_stdlib.h"
-#endif /* HAVE_STDLIB_H */
-
-#include <stdio.h>
-
-/* System-specific feature definitions and include files. */
-#include "rldefs.h"
-#include "rlmbutil.h"
-
-/* Termcap library stuff. */
-#include "tcap.h"
-
-/* Some standard library routines. */
-#include "readline.h"
-#include "history.h"
-
-#include "rlprivate.h"
-#include "xmalloc.h"
-
-#if !defined (strchr) && !defined (__STDC__)
-extern char *strchr (), *strrchr ();
-#endif /* !strchr && !__STDC__ */
-
-static void update_line PARAMS((char *, char *, int, int, int, int));
-static void space_to_eol PARAMS((int));
-static void delete_chars PARAMS((int));
-static void insert_some_chars PARAMS((char *, int, int));
-static void cr PARAMS((void));
-
-#if defined (HANDLE_MULTIBYTE)
-static int _rl_col_width PARAMS((const char *, int, int));
-static int *_rl_wrapped_line;
-#else
-#  define _rl_col_width(l, s, e)	(((e) <= (s)) ? 0 : (e) - (s))
-#endif
-
-static int *inv_lbreaks, *vis_lbreaks;
-static int inv_lbsize, vis_lbsize;
-
-/* Heuristic used to decide whether it is faster to move from CUR to NEW
-   by backing up or outputting a carriage return and moving forward.  CUR
-   and NEW are either both buffer positions or absolute screen positions. */
-#define CR_FASTER(new, cur) (((new) + 1) < ((cur) - (new)))
-
-/* _rl_last_c_pos is an absolute cursor position in multibyte locales and a
-   buffer index in others.  This macro is used when deciding whether the
-   current cursor position is in the middle of a prompt string containing
-   invisible characters. */
-#define PROMPT_ENDING_INDEX \
-  ((MB_CUR_MAX > 1 && rl_byte_oriented == 0) ? prompt_physical_chars : prompt_last_invisible+1)
-  
-
-/* **************************************************************** */
-/*								    */
-/*			Display stuff				    */
-/*								    */
-/* **************************************************************** */
-
-/* This is the stuff that is hard for me.  I never seem to write good
-   display routines in C.  Let's see how I do this time. */
-
-/* (PWP) Well... Good for a simple line updater, but totally ignores
-   the problems of input lines longer than the screen width.
-
-   update_line and the code that calls it makes a multiple line,
-   automatically wrapping line update.  Careful attention needs
-   to be paid to the vertical position variables. */
-
-/* Keep two buffers; one which reflects the current contents of the
-   screen, and the other to draw what we think the new contents should
-   be.  Then compare the buffers, and make whatever changes to the
-   screen itself that we should.  Finally, make the buffer that we
-   just drew into be the one which reflects the current contents of the
-   screen, and place the cursor where it belongs.
-
-   Commands that want to can fix the display themselves, and then let
-   this function know that the display has been fixed by setting the
-   RL_DISPLAY_FIXED variable.  This is good for efficiency. */
-
-/* Application-specific redisplay function. */
-rl_voidfunc_t *rl_redisplay_function = rl_redisplay;
-
-/* Global variables declared here. */
-/* What YOU turn on when you have handled all redisplay yourself. */
-int rl_display_fixed = 0;
-
-int _rl_suppress_redisplay = 0;
-int _rl_want_redisplay = 0;
-
-/* The stuff that gets printed out before the actual text of the line.
-   This is usually pointing to rl_prompt. */
-const char *rl_display_prompt = (const char *)NULL;
-
-/* Pseudo-global variables declared here. */
-
-/* The visible cursor position.  If you print some text, adjust this. */
-/* NOTE: _rl_last_c_pos is used as a buffer index when not in a locale
-   supporting multibyte characters, and an absolute cursor position when
-   in such a locale.  This is an artifact of the donated multibyte support.
-   Care must be taken when modifying its value. */
-int _rl_last_c_pos = 0;
-int _rl_last_v_pos = 0;
-
-static int cpos_adjusted;
-static int cpos_buffer_position;
-
-/* Number of lines currently on screen minus 1. */
-int _rl_vis_botlin = 0;
-
-/* Variables used only in this file. */
-/* The last left edge of text that was displayed.  This is used when
-   doing horizontal scrolling.  It shifts in thirds of a screenwidth. */
-static int last_lmargin;
-
-/* The line display buffers.  One is the line currently displayed on
-   the screen.  The other is the line about to be displayed. */
-static char *visible_line = (char *)NULL;
-static char *invisible_line = (char *)NULL;
-
-/* A buffer for `modeline' messages. */
-static char msg_buf[128];
-
-/* Non-zero forces the redisplay even if we thought it was unnecessary. */
-static int forced_display;
-
-/* Default and initial buffer size.  Can grow. */
-static int line_size = 1024;
-
-/* Variables to keep track of the expanded prompt string, which may
-   include invisible characters. */
-
-static char *local_prompt, *local_prompt_prefix;
-static int local_prompt_len;
-static int prompt_visible_length, prompt_prefix_length;
-
-/* The number of invisible characters in the line currently being
-   displayed on the screen. */
-static int visible_wrap_offset;
-
-/* The number of invisible characters in the prompt string.  Static so it
-   can be shared between rl_redisplay and update_line */
-static int wrap_offset;
-
-/* The index of the last invisible character in the prompt string. */
-static int prompt_last_invisible;
-
-/* The length (buffer offset) of the first line of the last (possibly
-   multi-line) buffer displayed on the screen. */
-static int visible_first_line_len;
-
-/* Number of invisible characters on the first physical line of the prompt.
-   Only valid when the number of physical characters in the prompt exceeds
-   (or is equal to) _rl_screenwidth. */
-static int prompt_invis_chars_first_line;
-
-static int prompt_physical_chars;
-
-/* Variables to save and restore prompt and display information. */
-
-/* These are getting numerous enough that it's time to create a struct. */
-
-static char *saved_local_prompt;
-static char *saved_local_prefix;
-static int saved_last_invisible;
-static int saved_visible_length;
-static int saved_prefix_length;
-static int saved_local_length;
-static int saved_invis_chars_first_line;
-static int saved_physical_chars;
-
-/* Expand the prompt string S and return the number of visible
-   characters in *LP, if LP is not null.  This is currently more-or-less
-   a placeholder for expansion.  LIP, if non-null is a place to store the
-   index of the last invisible character in the returned string. NIFLP,
-   if non-zero, is a place to store the number of invisible characters in
-   the first prompt line.  The previous are used as byte counts -- indexes
-   into a character buffer. */
-
-/* Current implementation:
-	\001 (^A) start non-visible characters
-	\002 (^B) end non-visible characters
-   all characters except \001 and \002 (following a \001) are copied to
-   the returned string; all characters except those between \001 and
-   \002 are assumed to be `visible'. */	
-
-static char *
-expand_prompt (pmt, lp, lip, niflp, vlp)
-     char *pmt;
-     int *lp, *lip, *niflp, *vlp;
-{
-  char *r, *ret, *p, *igstart;
-  int l, rl, last, ignoring, ninvis, invfl, invflset, physchars;
-#if defined (HANDLE_MULTIBYTE)
-  int ind, pind;
-#endif
-
-  /* Short-circuit if we can. */
-  if ((MB_CUR_MAX <= 1 || rl_byte_oriented) && strchr (pmt, RL_PROMPT_START_IGNORE) == 0)
-    {
-      r = savestring (pmt);
-      if (lp)
-	*lp = strlen (r);
-      if (lip)
-	*lip = 0;
-      if (niflp)
-	*niflp = 0;
-      if (vlp)
-	*vlp = lp ? *lp : (int)strlen (r);
-      return r;
-    }
-
-  l = strlen (pmt);
-  r = ret = (char *)xmalloc (l + 1);
-
-  invfl = 0;	/* invisible chars in first line of prompt */
-  invflset = 0;	/* we only want to set invfl once */
-
-  igstart = 0;
-  for (rl = ignoring = last = ninvis = physchars = 0, p = pmt; p && *p; p++)
-    {
-      /* This code strips the invisible character string markers
-	 RL_PROMPT_START_IGNORE and RL_PROMPT_END_IGNORE */
-      if (ignoring == 0 && *p == RL_PROMPT_START_IGNORE)		/* XXX - check ignoring? */
-	{
-	  ignoring = 1;
-	  igstart = p;
-	  continue;
-	}
-      else if (ignoring && *p == RL_PROMPT_END_IGNORE)
-	{
-	  ignoring = 0;
-	  if (p != (igstart + 1))
-	    last = r - ret - 1;
-	  continue;
-	}
-      else
-	{
-#if defined (HANDLE_MULTIBYTE)
-	  if (MB_CUR_MAX > 1 && rl_byte_oriented == 0)
-	    {
-	      pind = p - pmt;
-	      ind = _rl_find_next_mbchar (pmt, pind, 1, MB_FIND_NONZERO);
-	      l = ind - pind;
-	      while (l--)
-	        *r++ = *p++;
-	      if (!ignoring)
-		{
-		  rl += ind - pind;
-		  physchars += _rl_col_width (pmt, pind, ind);
-		}
-	      else
-		ninvis += ind - pind;
-	      p--;			/* compensate for later increment */
-	    }
-	  else
-#endif
-	    {
-	      *r++ = *p;
-	      if (!ignoring)
-		{
-		  rl++;			/* visible length byte counter */
-		  physchars++;
-		}
-	      else
-		ninvis++;		/* invisible chars byte counter */
-	    }
-
-	  if (invflset == 0 && rl >= _rl_screenwidth)
-	    {
-	      invfl = ninvis;
-	      invflset = 1;
-	    }
-	}
-    }
-
-  if (rl < _rl_screenwidth)
-    invfl = ninvis;
-
-  *r = '\0';
-  if (lp)
-    *lp = rl;
-  if (lip)
-    *lip = last;
-  if (niflp)
-    *niflp = invfl;
-  if  (vlp)
-    *vlp = physchars;
-  return ret;
-}
-
-/* Just strip out RL_PROMPT_START_IGNORE and RL_PROMPT_END_IGNORE from
-   PMT and return the rest of PMT. */
-char *
-_rl_strip_prompt (pmt)
-     char *pmt;
-{
-  char *ret;
-
-  ret = expand_prompt (pmt, (int *)NULL, (int *)NULL, (int *)NULL, (int *)NULL);
-  return ret;
-}
-
-/*
- * Expand the prompt string into the various display components, if
- * necessary.
- *
- * local_prompt = expanded last line of string in rl_display_prompt
- *		  (portion after the final newline)
- * local_prompt_prefix = portion before last newline of rl_display_prompt,
- *			 expanded via expand_prompt
- * prompt_visible_length = number of visible characters in local_prompt
- * prompt_prefix_length = number of visible characters in local_prompt_prefix
- *
- * This function is called once per call to readline().  It may also be
- * called arbitrarily to expand the primary prompt.
- *
- * The return value is the number of visible characters on the last line
- * of the (possibly multi-line) prompt.
- */
-int
-rl_expand_prompt (prompt)
-     char *prompt;
-{
-  char *p, *t;
-  int c;
-
-  /* Clear out any saved values. */
-  FREE (local_prompt);
-  FREE (local_prompt_prefix);
-
-  local_prompt = local_prompt_prefix = (char *)0;
-  local_prompt_len = 0;
-  prompt_last_invisible = prompt_invis_chars_first_line = 0;
-  prompt_visible_length = prompt_physical_chars = 0;
-
-  if (prompt == 0 || *prompt == 0)
-    return (0);
-
-  p = strrchr (prompt, '\n');
-  if (!p)
-    {
-      /* The prompt is only one logical line, though it might wrap. */
-      local_prompt = expand_prompt (prompt, &prompt_visible_length,
-					    &prompt_last_invisible,
-					    &prompt_invis_chars_first_line,
-					    &prompt_physical_chars);
-      local_prompt_prefix = (char *)0;
-      local_prompt_len = local_prompt ? strlen (local_prompt) : 0;
-      return (prompt_visible_length);
-    }
-  else
-    {
-      /* The prompt spans multiple lines. */
-      t = ++p;
-      local_prompt = expand_prompt (p, &prompt_visible_length,
-				       &prompt_last_invisible,
-				       (int *)NULL,
-				       &prompt_physical_chars);
-      c = *t; *t = '\0';
-      /* The portion of the prompt string up to and including the
-	 final newline is now null-terminated. */
-      local_prompt_prefix = expand_prompt (prompt, &prompt_prefix_length,
-						   (int *)NULL,
-						   &prompt_invis_chars_first_line,
-						   (int *)NULL);
-      *t = c;
-      local_prompt_len = local_prompt ? strlen (local_prompt) : 0;
-      return (prompt_prefix_length);
-    }
-}
-
-/* Initialize the VISIBLE_LINE and INVISIBLE_LINE arrays, and their associated
-   arrays of line break markers.  MINSIZE is the minimum size of VISIBLE_LINE
-   and INVISIBLE_LINE; if it is greater than LINE_SIZE, LINE_SIZE is
-   increased.  If the lines have already been allocated, this ensures that
-   they can hold at least MINSIZE characters. */
-static void
-init_line_structures (minsize)
-      int minsize;
-{
-  register int n;
-
-  if (invisible_line == 0)	/* initialize it */
-    {
-      if (line_size < minsize)
-	line_size = minsize;
-      visible_line = (char *)xmalloc (line_size);
-      invisible_line = (char *)xmalloc (line_size);
-    }
-  else if (line_size < minsize)	/* ensure it can hold MINSIZE chars */
-    {
-      line_size *= 2;
-      if (line_size < minsize)
-	line_size = minsize;
-      visible_line = (char *)xrealloc (visible_line, line_size);
-      invisible_line = (char *)xrealloc (invisible_line, line_size);
-    }
-
-  for (n = minsize; n < line_size; n++)
-    {
-      visible_line[n] = 0;
-      invisible_line[n] = 1;
-    }
-
-  if (vis_lbreaks == 0)
-    {
-      /* should be enough. */
-      inv_lbsize = vis_lbsize = 256;
-      inv_lbreaks = (int *)xmalloc (inv_lbsize * sizeof (int));
-      vis_lbreaks = (int *)xmalloc (vis_lbsize * sizeof (int));
-#if defined (HANDLE_MULTIBYTE)
-      _rl_wrapped_line = (int *)xmalloc (vis_lbsize * sizeof (int));
-#endif
-      inv_lbreaks[0] = vis_lbreaks[0] = 0;
-    }
-}
-  
-/* Basic redisplay algorithm. */
-void
-rl_redisplay ()
-{
-  register int in, out, c, linenum, cursor_linenum;
-  register char *line;
-  int inv_botlin, lb_linenum, o_cpos;
-  int newlines, lpos, temp, modmark;
-  const char *prompt_this_line;
-#if defined (HANDLE_MULTIBYTE)
-  int num, n0= 0;
-  wchar_t wc;
-  size_t wc_bytes;
-  int wc_width= 0;
-  mbstate_t ps;
-  int _rl_wrapped_multicolumn = 0;
-#endif
-
-  if (!readline_echoing_p)
-    return;
-
-  if (!rl_display_prompt)
-    rl_display_prompt = "";
-
-  if (invisible_line == 0 || vis_lbreaks == 0)
-    {
-      init_line_structures (0);
-      rl_on_new_line ();
-    }
-
-  /* Draw the line into the buffer. */
-  cpos_buffer_position = -1;
-
-  line = invisible_line;
-  out = inv_botlin = 0;
-
-  /* Mark the line as modified or not.  We only do this for history
-     lines. */
-  modmark = 0;
-  if (_rl_mark_modified_lines && current_history () && rl_undo_list)
-    {
-      line[out++] = '*';
-      line[out] = '\0';
-      modmark = 1;
-    }
-
-  /* If someone thought that the redisplay was handled, but the currently
-     visible line has a different modification state than the one about
-     to become visible, then correct the caller's misconception. */
-  if (visible_line[0] != invisible_line[0])
-    rl_display_fixed = 0;
-
-  /* If the prompt to be displayed is the `primary' readline prompt (the
-     one passed to readline()), use the values we have already expanded.
-     If not, use what's already in rl_display_prompt.  WRAP_OFFSET is the
-     number of non-visible characters in the prompt string. */
-  if (rl_display_prompt == rl_prompt || local_prompt)
-    {
-      if (local_prompt_prefix && forced_display)
-	_rl_output_some_chars (local_prompt_prefix, strlen (local_prompt_prefix));
-
-      if (local_prompt_len > 0)
-	{
-	  temp = local_prompt_len + out + 2;
-	  if (temp >= line_size)
-	    {
-	      line_size = (temp + 1024) - (temp % 1024);
-	      visible_line = (char *)xrealloc (visible_line, line_size);
-	      line = invisible_line = (char *)xrealloc (invisible_line, line_size);
-	    }
-	  strncpy (line + out, local_prompt, local_prompt_len);
-	  out += local_prompt_len;
-	}
-      line[out] = '\0';
-      wrap_offset = local_prompt_len - prompt_visible_length;
-    }
-  else
-    {
-      int pmtlen;
-      prompt_this_line = strrchr (rl_display_prompt, '\n');
-      if (!prompt_this_line)
-	prompt_this_line = rl_display_prompt;
-      else
-	{
-	  prompt_this_line++;
-	  pmtlen = prompt_this_line - rl_display_prompt;	/* temp var */
-	  if (forced_display)
-	    {
-	      _rl_output_some_chars (rl_display_prompt, pmtlen);
-	      /* Make sure we are at column zero even after a newline,
-		 regardless of the state of terminal output processing. */
-	      if (pmtlen < 2 || prompt_this_line[-2] != '\r')
-		cr ();
-	    }
-	}
-
-      prompt_physical_chars = pmtlen = strlen (prompt_this_line);
-      temp = pmtlen + out + 2;
-      if (temp >= line_size)
-	{
-	  line_size = (temp + 1024) - (temp % 1024);
-	  visible_line = (char *)xrealloc (visible_line, line_size);
-	  line = invisible_line = (char *)xrealloc (invisible_line, line_size);
-	}
-      strncpy (line + out,  prompt_this_line, pmtlen);
-      out += pmtlen;
-      line[out] = '\0';
-      wrap_offset = prompt_invis_chars_first_line = 0;
-    }
-
-#define CHECK_INV_LBREAKS() \
-      do { \
-	if (newlines >= (inv_lbsize - 2)) \
-	  { \
-	    inv_lbsize *= 2; \
-	    inv_lbreaks = (int *)xrealloc (inv_lbreaks, inv_lbsize * sizeof (int)); \
-	  } \
-      } while (0)
-
-#if defined (HANDLE_MULTIBYTE)	  
-#define CHECK_LPOS() \
-      do { \
-	lpos++; \
-	if (lpos >= _rl_screenwidth) \
-	  { \
-	    if (newlines >= (inv_lbsize - 2)) \
-	      { \
-		inv_lbsize *= 2; \
-		inv_lbreaks = (int *)xrealloc (inv_lbreaks, inv_lbsize * sizeof (int)); \
-		_rl_wrapped_line = (int *)xrealloc (_rl_wrapped_line, inv_lbsize * sizeof (int)); \
-	      } \
-	    inv_lbreaks[++newlines] = out; \
-	    _rl_wrapped_line[newlines] = _rl_wrapped_multicolumn; \
-	    lpos = 0; \
-	  } \
-      } while (0)
-#else
-#define CHECK_LPOS() \
-      do { \
-	lpos++; \
-	if (lpos >= _rl_screenwidth) \
-	  { \
-	    if (newlines >= (inv_lbsize - 2)) \
-	      { \
-		inv_lbsize *= 2; \
-		inv_lbreaks = (int *)xrealloc (inv_lbreaks, inv_lbsize * sizeof (int)); \
-	      } \
-	    inv_lbreaks[++newlines] = out; \
-	    lpos = 0; \
-	  } \
-      } while (0)
-#endif
-
-  /* inv_lbreaks[i] is where line i starts in the buffer. */
-  inv_lbreaks[newlines = 0] = 0;
-#if 0
-  lpos = out - wrap_offset;
-#else
-  lpos = prompt_physical_chars + modmark;
-#endif
-
-#if defined (HANDLE_MULTIBYTE)
-  memset (_rl_wrapped_line, 0, vis_lbsize);
-  num = 0;
-#endif
-
-  /* prompt_invis_chars_first_line is the number of invisible characters in
-     the first physical line of the prompt.
-     wrap_offset - prompt_invis_chars_first_line is the number of invis
-     chars on the second line. */
-
-  /* what if lpos is already >= _rl_screenwidth before we start drawing the
-     contents of the command line? */
-  while (lpos >= _rl_screenwidth)
-    {
-      /* fix from Darin Johnson <darin@acuson.com> for prompt string with
-         invisible characters that is longer than the screen width.  The
-         prompt_invis_chars_first_line variable could be made into an array
-         saying how many invisible characters there are per line, but that's
-         probably too much work for the benefit gained.  How many people have
-         prompts that exceed two physical lines?
-         Additional logic fix from Edward Catmur <ed@catmur.co.uk> */
-#if defined (HANDLE_MULTIBYTE)
-      int z;
-      if (MB_CUR_MAX > 1 && rl_byte_oriented == 0)
-	{
-	  n0 = num;
-          temp = local_prompt_len;
-          while (num < temp)
-	    {
-	      z = _rl_col_width  (local_prompt, n0, num);
-	      if (z > _rl_screenwidth)
-		{
-	          num = _rl_find_prev_mbchar (local_prompt, num, MB_FIND_ANY);
-	          break;
-		}
-	      else if (z == _rl_screenwidth)
-	        break;
-	      num++;
-	    }
-          temp = num;
-	}
-      else
-#endif /* !HANDLE_MULTIBYTE */
-	temp = ((newlines + 1) * _rl_screenwidth);
-
-      /* Now account for invisible characters in the current line. */
-      temp += ((local_prompt_prefix == 0) ? ((newlines == 0) ? prompt_invis_chars_first_line
-							     : ((newlines == 1) ? wrap_offset : 0))
-					  : ((newlines == 0) ? wrap_offset :0));
-             
-      inv_lbreaks[++newlines] = temp;
-#if defined (HANDLE_MULTIBYTE)
-      if (MB_CUR_MAX > 1 && rl_byte_oriented == 0)
-	lpos -= _rl_col_width (local_prompt, n0, num);
-      else
-#endif
-	lpos -= _rl_screenwidth;
-    }
-
-  /* Draw the rest of the line (after the prompt) into invisible_line, keeping
-     track of where the cursor is (cpos_buffer_position), the number of the line containing
-     the cursor (lb_linenum), the last line number (inv_botlin).
-     It maintains an array of line breaks for display (inv_lbreaks).
-     This handles expanding tabs for display and displaying meta characters. */
-  lb_linenum = 0;
-#if defined (HANDLE_MULTIBYTE)
-  in = 0;
-  if (MB_CUR_MAX > 1 && rl_byte_oriented == 0)
-    {
-      memset (&ps, 0, sizeof (mbstate_t));
-      wc_bytes = mbrtowc (&wc, rl_line_buffer, rl_end, &ps);
-    }
-  else
-    wc_bytes = 1;
-  while (in < rl_end)
-#else
-  for (in = 0; in < rl_end; in++)
-#endif
-    {
-      c = (unsigned char)rl_line_buffer[in];
-
-#if defined (HANDLE_MULTIBYTE)
-      if (MB_CUR_MAX > 1 && rl_byte_oriented == 0)
-	{
-	  if (MB_INVALIDCH (wc_bytes))
-	    {
-	      /* Byte sequence is invalid or shortened.  Assume that the
-	         first byte represents a character. */
-	      wc_bytes = 1;
-	      /* Assume that a character occupies a single column. */
-	      wc_width = 1;
-	      memset (&ps, 0, sizeof (mbstate_t));
-	    }
-	  else if (MB_NULLWCH (wc_bytes))
-	    break;			/* Found '\0' */
-	  else
-	    {
-	      temp = wcwidth (wc);
-	      wc_width = (temp >= 0) ? temp : 1;
-	    }
-	}
-#endif
-
-      if (out + 8 >= line_size)		/* XXX - 8 for \t */
-	{
-	  line_size *= 2;
-	  visible_line = (char *)xrealloc (visible_line, line_size);
-	  invisible_line = (char *)xrealloc (invisible_line, line_size);
-	  line = invisible_line;
-	}
-
-      if (in == rl_point)
-	{
-	  cpos_buffer_position = out;
-	  lb_linenum = newlines;
-	}
-
-#if defined (HANDLE_MULTIBYTE)
-      if (META_CHAR (c) && _rl_output_meta_chars == 0)	/* XXX - clean up */
-#else
-      if (META_CHAR (c))
-#endif
-	{
-	  if (_rl_output_meta_chars == 0)
-	    {
-	      sprintf (line + out, "\\%o", c);
-
-	      if (lpos + 4 >= _rl_screenwidth)
-		{
-		  temp = _rl_screenwidth - lpos;
-		  CHECK_INV_LBREAKS ();
-		  inv_lbreaks[++newlines] = out + temp;
-		  lpos = 4 - temp;
-		}
-	      else
-		lpos += 4;
-
-	      out += 4;
-	    }
-	  else
-	    {
-	      line[out++] = c;
-	      CHECK_LPOS();
-	    }
-	}
-#if defined (DISPLAY_TABS)
-      else if (c == '\t')
-	{
-	  register int newout;
-
-#if 0
-	  newout = (out | (int)7) + 1;
-#else
-	  newout = out + 8 - lpos % 8;
-#endif
-	  temp = newout - out;
-	  if (lpos + temp >= _rl_screenwidth)
-	    {
-	      register int temp2;
-	      temp2 = _rl_screenwidth - lpos;
-	      CHECK_INV_LBREAKS ();
-	      inv_lbreaks[++newlines] = out + temp2;
-	      lpos = temp - temp2;
-	      while (out < newout)
-		line[out++] = ' ';
-	    }
-	  else
-	    {
-	      while (out < newout)
-		line[out++] = ' ';
-	      lpos += temp;
-	    }
-	}
-#endif
-      else if (c == '\n' && _rl_horizontal_scroll_mode == 0 && _rl_term_up && *_rl_term_up)
-	{
-	  line[out++] = '\0';	/* XXX - sentinel */
-	  CHECK_INV_LBREAKS ();
-	  inv_lbreaks[++newlines] = out;
-	  lpos = 0;
-	}
-      else if (CTRL_CHAR (c) || c == RUBOUT)
-	{
-	  line[out++] = '^';
-	  CHECK_LPOS();
-	  line[out++] = CTRL_CHAR (c) ? UNCTRL (c) : '?';
-	  CHECK_LPOS();
-	}
-      else
-	{
-#if defined (HANDLE_MULTIBYTE)
-	  if (MB_CUR_MAX > 1 && rl_byte_oriented == 0)
-	    {
-	      register int i;
-
-	      _rl_wrapped_multicolumn = 0;
-
-	      if (_rl_screenwidth < lpos + wc_width)
-		for (i = lpos; i < _rl_screenwidth; i++)
-		  {
-		    /* The space will be removed in update_line() */
-		    line[out++] = ' ';
-		    _rl_wrapped_multicolumn++;
-		    CHECK_LPOS();
-		  }
-	      if (in == rl_point)
-		{
-		  cpos_buffer_position = out;
-		  lb_linenum = newlines;
-		}
-	      for (i = in; i < in+(int)wc_bytes; i++)
-		line[out++] = rl_line_buffer[i];
-	      for (i = 0; i < wc_width; i++)
-		CHECK_LPOS();
-	    }
-	  else
-	    {
-	      line[out++] = c;
-	      CHECK_LPOS();
-	    }
-#else
-	  line[out++] = c;
-	  CHECK_LPOS();
-#endif
-	}
-
-#if defined (HANDLE_MULTIBYTE)
-      if (MB_CUR_MAX > 1 && rl_byte_oriented == 0)
-	{
-	  in += wc_bytes;
-	  wc_bytes = mbrtowc (&wc, rl_line_buffer + in, rl_end - in, &ps);
-	}
-      else
-        in++;
-#endif
-
-    }
-  line[out] = '\0';
-  if (cpos_buffer_position < 0)
-    {
-      cpos_buffer_position = out;
-      lb_linenum = newlines;
-    }
-
-  inv_botlin = newlines;
-  CHECK_INV_LBREAKS ();
-  inv_lbreaks[newlines+1] = out;
-  cursor_linenum = lb_linenum;
-
-  /* CPOS_BUFFER_POSITION == position in buffer where cursor should be placed.
-     CURSOR_LINENUM == line number where the cursor should be placed. */
-
-  /* PWP: now is when things get a bit hairy.  The visible and invisible
-     line buffers are really multiple lines, which would wrap every
-     (screenwidth - 1) characters.  Go through each in turn, finding
-     the changed region and updating it.  The line order is top to bottom. */
-
-  /* If we can move the cursor up and down, then use multiple lines,
-     otherwise, let long lines display in a single terminal line, and
-     horizontally scroll it. */
-
-  if (_rl_horizontal_scroll_mode == 0 && _rl_term_up && *_rl_term_up)
-    {
-      int nleft, pos, changed_screen_line, tx;
-      char empty_str[1] = { 0 };
-
-      if (!rl_display_fixed || forced_display)
-	{
-	  forced_display = 0;
-
-	  /* If we have more than a screenful of material to display, then
-	     only display a screenful.  We should display the last screen,
-	     not the first.  */
-	  if (out >= _rl_screenchars)
-	    {
-	      if (MB_CUR_MAX > 1 && rl_byte_oriented == 0)
-		out = _rl_find_prev_mbchar (line, _rl_screenchars, MB_FIND_ANY);
-	      else
-		out = _rl_screenchars - 1;
-	    }
-
-	  /* The first line is at character position 0 in the buffer.  The
-	     second and subsequent lines start at inv_lbreaks[N], offset by
-	     OFFSET (which has already been calculated above).  */
-
-#define W_OFFSET(line, offset) ((line) == 0 ? offset : 0)
-#define VIS_LLEN(l)	((l) > _rl_vis_botlin ? 0 : (vis_lbreaks[l+1] - vis_lbreaks[l]))
-#define INV_LLEN(l)	(inv_lbreaks[l+1] - inv_lbreaks[l])
-#define VIS_CHARS(line) (visible_line + vis_lbreaks[line])
-#define VIS_LINE(line) ((line) > _rl_vis_botlin) ? empty_str : VIS_CHARS(line)
-#define INV_LINE(line) (invisible_line + inv_lbreaks[line])
-
-	  /* For each line in the buffer, do the updating display. */
-	  for (linenum = 0; linenum <= inv_botlin; linenum++)
-	    {
-	      /* This can lead us astray if we execute a program that changes
-		 the locale from a non-multibyte to a multibyte one. */
-	      o_cpos = _rl_last_c_pos;
-	      cpos_adjusted = 0;
-	      update_line (VIS_LINE(linenum), INV_LINE(linenum), linenum,
-			   VIS_LLEN(linenum), INV_LLEN(linenum), inv_botlin);
-
-	      /* update_line potentially changes _rl_last_c_pos, but doesn't
-		 take invisible characters into account, since _rl_last_c_pos
-		 is an absolute cursor position in a multibyte locale.  See
-		 if compensating here is the right thing, or if we have to
-		 change update_line itself.  There is one case in which
-		 update_line adjusts _rl_last_c_pos itself (so it can pass
-		 _rl_move_cursor_relative accurate values); it communicates
-		 this back by setting cpos_adjusted.  If we assume that
-		 _rl_last_c_pos is correct (an absolute cursor position) each
-		 time update_line is called, then we can assume in our
-		 calculations that o_cpos does not need to be adjusted by
-		 wrap_offset. */
-	      if (linenum == 0 && (MB_CUR_MAX > 1 && rl_byte_oriented == 0) &&
-		  cpos_adjusted == 0 &&
-		  _rl_last_c_pos != o_cpos &&
-		  _rl_last_c_pos > wrap_offset &&
-		  o_cpos < prompt_last_invisible)
-		_rl_last_c_pos -= wrap_offset;
-		  
-	      /* If this is the line with the prompt, we might need to
-		 compensate for invisible characters in the new line. Do
-		 this only if there is not more than one new line (which
-		 implies that we completely overwrite the old visible line)
-		 and the new line is shorter than the old.  Make sure we are
-		 at the end of the new line before clearing. */
-	      if (linenum == 0 &&
-		  inv_botlin == 0 && _rl_last_c_pos == out &&
-		  (wrap_offset > visible_wrap_offset) &&
-		  (_rl_last_c_pos < visible_first_line_len))
-		{
-		  if (MB_CUR_MAX > 1 && rl_byte_oriented == 0)
-		    nleft = _rl_screenwidth - _rl_last_c_pos;
-		  else
-		    nleft = _rl_screenwidth + wrap_offset - _rl_last_c_pos;
-		  if (nleft)
-		    _rl_clear_to_eol (nleft);
-		}
-
-	      /* Since the new first line is now visible, save its length. */
-	      if (linenum == 0)
-		visible_first_line_len = (inv_botlin > 0) ? inv_lbreaks[1] : out - wrap_offset;
-	    }
-
-	  /* We may have deleted some lines.  If so, clear the left over
-	     blank ones at the bottom out. */
-	  if (_rl_vis_botlin > inv_botlin)
-	    {
-	      char *tt;
-	      for (; linenum <= _rl_vis_botlin; linenum++)
-		{
-		  tt = VIS_CHARS (linenum);
-		  _rl_move_vert (linenum);
-		  _rl_move_cursor_relative (0, tt);
-		  _rl_clear_to_eol
-		    ((linenum == _rl_vis_botlin) ? (int)strlen (tt) : _rl_screenwidth);
-		}
-	    }
-	  _rl_vis_botlin = inv_botlin;
-
-	  /* CHANGED_SCREEN_LINE is set to 1 if we have moved to a
-	     different screen line during this redisplay. */
-	  changed_screen_line = _rl_last_v_pos != cursor_linenum;
-	  if (changed_screen_line)
-	    {
-	      _rl_move_vert (cursor_linenum);
-	      /* If we moved up to the line with the prompt using _rl_term_up,
-		 the physical cursor position on the screen stays the same,
-		 but the buffer position needs to be adjusted to account
-		 for invisible characters. */
-	      if ((MB_CUR_MAX == 1 || rl_byte_oriented) && cursor_linenum == 0 && wrap_offset)
-		_rl_last_c_pos += wrap_offset;
-	    }
-
-	  /* We have to reprint the prompt if it contains invisible
-	     characters, since it's not generally OK to just reprint
-	     the characters from the current cursor position.  But we
-	     only need to reprint it if the cursor is before the last
-	     invisible character in the prompt string. */
-	  nleft = prompt_visible_length + wrap_offset;
-	  if (cursor_linenum == 0 && wrap_offset > 0 && _rl_last_c_pos > 0 &&
-#if 0
-	      _rl_last_c_pos <= PROMPT_ENDING_INDEX && local_prompt)
-#else
-	      _rl_last_c_pos < PROMPT_ENDING_INDEX && local_prompt)
-#endif
-	    {
-#if defined (__MSDOS__)
-	      putc ('\r', rl_outstream);
-#else
-	      if (_rl_term_cr)
-		tputs (_rl_term_cr, 1, _rl_output_character_function);
-#endif
-	      _rl_output_some_chars (local_prompt, nleft);
-	      if (MB_CUR_MAX > 1 && rl_byte_oriented == 0)
-		_rl_last_c_pos = _rl_col_width (local_prompt, 0, nleft) - wrap_offset;
-	      else
-		_rl_last_c_pos = nleft;
-	    }
-
-	  /* Where on that line?  And where does that line start
-	     in the buffer? */
-	  pos = inv_lbreaks[cursor_linenum];
-	  /* nleft == number of characters in the line buffer between the
-	     start of the line and the desired cursor position. */
-	  nleft = cpos_buffer_position - pos;
-
-	  /* NLEFT is now a number of characters in a buffer.  When in a
-	     multibyte locale, however, _rl_last_c_pos is an absolute cursor
-	     position that doesn't take invisible characters in the prompt
-	     into account.  We use a fudge factor to compensate. */
-
-	  /* Since _rl_backspace() doesn't know about invisible characters in the
-	     prompt, and there's no good way to tell it, we compensate for
-	     those characters here and call _rl_backspace() directly. */
-	  if (wrap_offset && cursor_linenum == 0 && nleft < _rl_last_c_pos)
-	    {
-	      /* TX == new physical cursor position in multibyte locale. */
-	      if (MB_CUR_MAX > 1 && rl_byte_oriented == 0)
-		tx = _rl_col_width (&visible_line[pos], 0, nleft) - visible_wrap_offset;
-	      else
-		tx = nleft;
-	      if (_rl_last_c_pos > tx)
-		{
-	          _rl_backspace (_rl_last_c_pos - tx);	/* XXX */
-	          _rl_last_c_pos = tx;
-		}
-	    }
-
-	  /* We need to note that in a multibyte locale we are dealing with
-	     _rl_last_c_pos as an absolute cursor position, but moving to a
-	     point specified by a buffer position (NLEFT) that doesn't take
-	     invisible characters into account. */
-	  if (MB_CUR_MAX > 1 && rl_byte_oriented == 0)
-	    _rl_move_cursor_relative (nleft, &invisible_line[pos]);
-	  else if (nleft != _rl_last_c_pos)
-	    _rl_move_cursor_relative (nleft, &invisible_line[pos]);
-	}
-    }
-  else				/* Do horizontal scrolling. */
-    {
-#define M_OFFSET(margin, offset) ((margin) == 0 ? offset : 0)
-      int lmargin, ndisp, nleft, phys_c_pos, t;
-
-      /* Always at top line. */
-      _rl_last_v_pos = 0;
-
-      /* Compute where in the buffer the displayed line should start.  This
-	 will be LMARGIN. */
-
-      /* The number of characters that will be displayed before the cursor. */
-      ndisp = cpos_buffer_position - wrap_offset;
-      nleft  = prompt_visible_length + wrap_offset;
-      /* Where the new cursor position will be on the screen.  This can be
-	 longer than SCREENWIDTH; if it is, lmargin will be adjusted. */
-      phys_c_pos = cpos_buffer_position - (last_lmargin ? last_lmargin : wrap_offset);
-      t = _rl_screenwidth / 3;
-
-      /* If the number of characters had already exceeded the screenwidth,
-	 last_lmargin will be > 0. */
-
-      /* If the number of characters to be displayed is more than the screen
-	 width, compute the starting offset so that the cursor is about
-	 two-thirds of the way across the screen. */
-      if (phys_c_pos > _rl_screenwidth - 2)
-	{
-	  lmargin = cpos_buffer_position - (2 * t);
-	  if (lmargin < 0)
-	    lmargin = 0;
-	  /* If the left margin would be in the middle of a prompt with
-	     invisible characters, don't display the prompt at all. */
-	  if (wrap_offset && lmargin > 0 && lmargin < nleft)
-	    lmargin = nleft;
-	}
-      else if (ndisp < _rl_screenwidth - 2)		/* XXX - was -1 */
-	lmargin = 0;
-      else if (phys_c_pos < 1)
-	{
-	  /* If we are moving back towards the beginning of the line and
-	     the last margin is no longer correct, compute a new one. */
-	  lmargin = ((cpos_buffer_position - 1) / t) * t;	/* XXX */
-	  if (wrap_offset && lmargin > 0 && lmargin < nleft)
-	    lmargin = nleft;
-	}
-      else
-	lmargin = last_lmargin;
-
-      /* If the first character on the screen isn't the first character
-	 in the display line, indicate this with a special character. */
-      if (lmargin > 0)
-	line[lmargin] = '<';
-
-      /* If SCREENWIDTH characters starting at LMARGIN do not encompass
-	 the whole line, indicate that with a special character at the
-	 right edge of the screen.  If LMARGIN is 0, we need to take the
-	 wrap offset into account. */
-      t = lmargin + M_OFFSET (lmargin, wrap_offset) + _rl_screenwidth;
-      if (t < out)
-	line[t - 1] = '>';
-
-      if (!rl_display_fixed || forced_display || lmargin != last_lmargin)
-	{
-	  forced_display = 0;
-	  update_line (&visible_line[last_lmargin],
-		       &invisible_line[lmargin],
-		       0,
-		       _rl_screenwidth + visible_wrap_offset,
-		       _rl_screenwidth + (lmargin ? 0 : wrap_offset),
-		       0);
-
-	  /* If the visible new line is shorter than the old, but the number
-	     of invisible characters is greater, and we are at the end of
-	     the new line, we need to clear to eol. */
-	  t = _rl_last_c_pos - M_OFFSET (lmargin, wrap_offset);
-	  if ((M_OFFSET (lmargin, wrap_offset) > visible_wrap_offset) &&
-	      (_rl_last_c_pos == out) &&
-	      t < visible_first_line_len)
-	    {
-	      nleft = _rl_screenwidth - t;
-	      _rl_clear_to_eol (nleft);
-	    }
-	  visible_first_line_len = out - lmargin - M_OFFSET (lmargin, wrap_offset);
-	  if (visible_first_line_len > _rl_screenwidth)
-	    visible_first_line_len = _rl_screenwidth;
-
-	  _rl_move_cursor_relative (cpos_buffer_position - lmargin, &invisible_line[lmargin]);
-	  last_lmargin = lmargin;
-	}
-    }
-  fflush (rl_outstream);
-
-  /* Swap visible and non-visible lines. */
-  {
-    char *vtemp = visible_line;
-    int *itemp = vis_lbreaks, ntemp = vis_lbsize;
-
-    visible_line = invisible_line;
-    invisible_line = vtemp;
-
-    vis_lbreaks = inv_lbreaks;
-    inv_lbreaks = itemp;
-
-    vis_lbsize = inv_lbsize;
-    inv_lbsize = ntemp;
-
-    rl_display_fixed = 0;
-    /* If we are displaying on a single line, and last_lmargin is > 0, we
-       are not displaying any invisible characters, so set visible_wrap_offset
-       to 0. */
-    if (_rl_horizontal_scroll_mode && last_lmargin)
-      visible_wrap_offset = 0;
-    else
-      visible_wrap_offset = wrap_offset;
-  }
-}
-
-/* PWP: update_line() is based on finding the middle difference of each
-   line on the screen; vis:
-
-			     /old first difference
-	/beginning of line   |	      /old last same       /old EOL
-	v		     v	      v		    v
-old:	eddie> Oh, my little gruntle-buggy is to me, as lurgid as
-new:	eddie> Oh, my little buggy says to me, as lurgid as
-	^		     ^	^			   ^
-	\beginning of line   |	\new last same	   \new end of line
-			     \new first difference
-
-   All are character pointers for the sake of speed.  Special cases for
-   no differences, as well as for end of line additions must be handled.
-
-   Could be made even smarter, but this works well enough */
-static void
-update_line (old, new, current_line, omax, nmax, inv_botlin)
-     register char *old, *new;
-     int current_line, omax, nmax, inv_botlin;
-{
-  register char *ofd, *ols, *oe, *nfd, *nls, *ne;
-  int temp, lendiff, wsatend, od, nd;
-  int current_invis_chars;
-  int col_lendiff, col_temp;
-#if defined (HANDLE_MULTIBYTE)
-  mbstate_t ps_new, ps_old;
-  int new_offset, old_offset;
-#endif
-
-  /* If we're at the right edge of a terminal that supports xn, we're
-     ready to wrap around, so do so.  This fixes problems with knowing
-     the exact cursor position and cut-and-paste with certain terminal
-     emulators.  In this calculation, TEMP is the physical screen
-     position of the cursor. */
-  if (MB_CUR_MAX > 1 && rl_byte_oriented == 0)
-    temp = _rl_last_c_pos;
-  else
-    temp = _rl_last_c_pos - W_OFFSET(_rl_last_v_pos, visible_wrap_offset);
-  if (temp == _rl_screenwidth && _rl_term_autowrap && !_rl_horizontal_scroll_mode
-	&& _rl_last_v_pos == current_line - 1)
-    {
-#if defined (HANDLE_MULTIBYTE)
-      if (MB_CUR_MAX > 1 && rl_byte_oriented == 0)
-	{
-	  wchar_t wc;
-	  mbstate_t ps;
-	  int tempwidth, bytes;
-	  size_t ret;
-
-	  /* This fixes only double-column characters, but if the wrapped
-	     character comsumes more than three columns, spaces will be
-	     inserted in the string buffer. */
-	  if (_rl_wrapped_line[current_line] > 0)
-	    _rl_clear_to_eol (_rl_wrapped_line[current_line]);
-
-	  memset (&ps, 0, sizeof (mbstate_t));
-	  ret = mbrtowc (&wc, new, MB_CUR_MAX, &ps);
-	  if (MB_INVALIDCH (ret))
-	    {
-	      tempwidth = 1;
-	      ret = 1;
-	    }
-	  else if (MB_NULLWCH (ret))
-	    tempwidth = 0;
-	  else
-	    tempwidth = wcwidth (wc);
-
-	  if (tempwidth > 0)
-	    {
-	      int count;
-	      bytes = ret;
-	      for (count = 0; count < bytes; count++)
-		putc (new[count], rl_outstream);
-	      _rl_last_c_pos = tempwidth;
-	      _rl_last_v_pos++;
-	      memset (&ps, 0, sizeof (mbstate_t));
-	      ret = mbrtowc (&wc, old, MB_CUR_MAX, &ps);
-	      if (ret != 0 && bytes != 0)
-		{
-		  if (MB_INVALIDCH (ret))
-		    memmove (old+bytes, old+1, strlen (old+1));
-		  else
-		    memmove (old+bytes, old+ret, strlen (old+ret));
-		  memcpy (old, new, bytes);
-		}
-	    }
-	  else
-	    {
-	      putc (' ', rl_outstream);
-	      _rl_last_c_pos = 1;
-	      _rl_last_v_pos++;
-	      if (old[0] && new[0])
-		old[0] = new[0];
-	    }
-	}
-      else
-#endif
-	{
-	  if (new[0])
-	    putc (new[0], rl_outstream);
-	  else
-	    putc (' ', rl_outstream);
-	  _rl_last_c_pos = 1;
-	  _rl_last_v_pos++;
-	  if (old[0] && new[0])
-	    old[0] = new[0];
-	}
-    }
-
-      
-  /* Find first difference. */
-#if defined (HANDLE_MULTIBYTE)
-  if (MB_CUR_MAX > 1 && rl_byte_oriented == 0)
-    {
-      /* See if the old line is a subset of the new line, so that the
-	 only change is adding characters. */
-      temp = (omax < nmax) ? omax : nmax;
-      if (memcmp (old, new, temp) == 0)
-	{
-	  ofd = old + temp;
-	  nfd = new + temp;
-	}
-      else
-	{      
-	  memset (&ps_new, 0, sizeof(mbstate_t));
-	  memset (&ps_old, 0, sizeof(mbstate_t));
-
-	  if (omax == nmax && STREQN (new, old, omax))
-	    {
-	      ofd = old + omax;
-	      nfd = new + nmax;
-	    }
-	  else
-	    {
-	      new_offset = old_offset = 0;
-	      for (ofd = old, nfd = new;
-		    (ofd - old < omax) && *ofd &&
-		    _rl_compare_chars(old, old_offset, &ps_old, new, new_offset, &ps_new); )
-		{
-		  old_offset = _rl_find_next_mbchar (old, old_offset, 1, MB_FIND_ANY);
-		  new_offset = _rl_find_next_mbchar (new, new_offset, 1, MB_FIND_ANY);
-		  ofd = old + old_offset;
-		  nfd = new + new_offset;
-		}
-	    }
-	}
-    }
-  else
-#endif
-  for (ofd = old, nfd = new;
-       (ofd - old < omax) && *ofd && (*ofd == *nfd);
-       ofd++, nfd++)
-    ;
-
-  /* Move to the end of the screen line.  ND and OD are used to keep track
-     of the distance between ne and new and oe and old, respectively, to
-     move a subtraction out of each loop. */
-  for (od = ofd - old, oe = ofd; od < omax && *oe; oe++, od++);
-  for (nd = nfd - new, ne = nfd; nd < nmax && *ne; ne++, nd++);
-
-  /* If no difference, continue to next line. */
-  if (ofd == oe && nfd == ne)
-    return;
-
-  wsatend = 1;			/* flag for trailing whitespace */
-
-#if defined (HANDLE_MULTIBYTE)
-  if (MB_CUR_MAX > 1 && rl_byte_oriented == 0)
-    {
-      ols = old + _rl_find_prev_mbchar (old, oe - old, MB_FIND_ANY);
-      nls = new + _rl_find_prev_mbchar (new, ne - new, MB_FIND_ANY);
-      while ((ols > ofd) && (nls > nfd))
-	{
-	  memset (&ps_old, 0, sizeof (mbstate_t));
-	  memset (&ps_new, 0, sizeof (mbstate_t));
-
-#if 0
-	  /* On advice from jir@yamato.ibm.com */
-	  _rl_adjust_point (old, ols - old, &ps_old);
-	  _rl_adjust_point (new, nls - new, &ps_new);
-#endif
-
-	  if (_rl_compare_chars (old, ols - old, &ps_old, new, nls - new, &ps_new) == 0)
-	    break;
-
-	  if (*ols == ' ')
-	    wsatend = 0;
-
-	  ols = old + _rl_find_prev_mbchar (old, ols - old, MB_FIND_ANY);
-	  nls = new + _rl_find_prev_mbchar (new, nls - new, MB_FIND_ANY);
-	}
-    }
-  else
-    {
-#endif /* HANDLE_MULTIBYTE */
-  ols = oe - 1;			/* find last same */
-  nls = ne - 1;
-  while ((ols > ofd) && (nls > nfd) && (*ols == *nls))
-    {
-      if (*ols != ' ')
-	wsatend = 0;
-      ols--;
-      nls--;
-    }
-#if defined (HANDLE_MULTIBYTE)
-    }
-#endif
-
-  if (wsatend)
-    {
-      ols = oe;
-      nls = ne;
-    }
-#if defined (HANDLE_MULTIBYTE)
-  /* This may not work for stateful encoding, but who cares?  To handle
-     stateful encoding properly, we have to scan each string from the
-     beginning and compare. */
-  else if (_rl_compare_chars (ols, 0, NULL, nls, 0, NULL) == 0)
-#else
-  else if (*ols != *nls)
-#endif
-    {
-      if (*ols)			/* don't step past the NUL */
-	{
-	  if (MB_CUR_MAX > 1 && rl_byte_oriented == 0)
-	    ols = old + _rl_find_next_mbchar (old, ols - old, 1, MB_FIND_ANY);
-	  else
-	    ols++;
-	}
-      if (*nls)
-	{
-	  if (MB_CUR_MAX > 1 && rl_byte_oriented == 0)
-	    nls = new + _rl_find_next_mbchar (new, nls - new, 1, MB_FIND_ANY);
-	  else
-	    nls++;
-	}
-    }
-
-  /* count of invisible characters in the current invisible line. */
-  current_invis_chars = W_OFFSET (current_line, wrap_offset);
-  if (_rl_last_v_pos != current_line)
-    {
-      _rl_move_vert (current_line);
-      if ((MB_CUR_MAX == 1 || rl_byte_oriented) && current_line == 0 && visible_wrap_offset)
-	_rl_last_c_pos += visible_wrap_offset;
-    }
-
-  /* If this is the first line and there are invisible characters in the
-     prompt string, and the prompt string has not changed, and the current
-     cursor position is before the last invisible character in the prompt,
-     and the index of the character to move to is past the end of the prompt
-     string, then redraw the entire prompt string.  We can only do this
-     reliably if the terminal supports a `cr' capability.
-
-     This is not an efficiency hack -- there is a problem with redrawing
-     portions of the prompt string if they contain terminal escape
-     sequences (like drawing the `unbold' sequence without a corresponding
-     `bold') that manifests itself on certain terminals. */
-
-  lendiff = local_prompt_len;
-  od = ofd - old;	/* index of first difference in visible line */
-  if (current_line == 0 && !_rl_horizontal_scroll_mode &&
-      _rl_term_cr && lendiff > prompt_visible_length && _rl_last_c_pos > 0 &&
-      od >= lendiff && _rl_last_c_pos < PROMPT_ENDING_INDEX)
-    {
-#if defined (__MSDOS__)
-      putc ('\r', rl_outstream);
-#else
-      tputs (_rl_term_cr, 1, _rl_output_character_function);
-#endif
-      _rl_output_some_chars (local_prompt, lendiff);
-      if (MB_CUR_MAX > 1 && rl_byte_oriented == 0)
-	{
-	  /* We take wrap_offset into account here so we can pass correct
-	     information to _rl_move_cursor_relative. */
-	  _rl_last_c_pos = _rl_col_width (local_prompt, 0, lendiff) - wrap_offset;
-	  cpos_adjusted = 1;
-	}
-      else
-	_rl_last_c_pos = lendiff;
-    }
-
-  /* When this function returns, _rl_last_c_pos is correct, and an absolute
-     cursor postion in multibyte mode, but a buffer index when not in a
-     multibyte locale. */
-  _rl_move_cursor_relative (od, old);
-#if 1
-#if defined (HANDLE_MULTIBYTE)
-  /* We need to indicate that the cursor position is correct in the presence of
-     invisible characters in the prompt string.  Let's see if setting this when
-     we make sure we're at the end of the drawn prompt string works. */
-  if (current_line == 0 && MB_CUR_MAX > 1 && rl_byte_oriented == 0 && _rl_last_c_pos == prompt_physical_chars)
-    cpos_adjusted = 1;
-#endif
-#endif
-
-  /* if (len (new) > len (old))
-     lendiff == difference in buffer
-     col_lendiff == difference on screen
-     When not using multibyte characters, these are equal */
-  lendiff = (nls - nfd) - (ols - ofd);
-  if (MB_CUR_MAX > 1 && rl_byte_oriented == 0)
-    col_lendiff = _rl_col_width (new, nfd - new, nls - new) - _rl_col_width (old, ofd - old, ols - old);
-  else
-    col_lendiff = lendiff;
-
-  /* If we are changing the number of invisible characters in a line, and
-     the spot of first difference is before the end of the invisible chars,
-     lendiff needs to be adjusted. */
-  if (current_line == 0 && !_rl_horizontal_scroll_mode &&
-      current_invis_chars != visible_wrap_offset)
-    {
-      if (MB_CUR_MAX > 1 && rl_byte_oriented == 0)
-	{
-	  lendiff += visible_wrap_offset - current_invis_chars;
-	  col_lendiff += visible_wrap_offset - current_invis_chars;
-	}
-      else
-	{
-	  lendiff += visible_wrap_offset - current_invis_chars;
-	  col_lendiff = lendiff;
-	}
-    }
-
-  /* Insert (diff (len (old), len (new)) ch. */
-  temp = ne - nfd;
-  if (MB_CUR_MAX > 1 && rl_byte_oriented == 0)
-    col_temp = _rl_col_width (new, nfd - new, ne - new);
-  else
-    col_temp = temp;
-
-  if (col_lendiff > 0)	/* XXX - was lendiff */
-    {
-      /* Non-zero if we're increasing the number of lines. */
-      int gl = current_line >= _rl_vis_botlin && inv_botlin > _rl_vis_botlin;
-      /* Sometimes it is cheaper to print the characters rather than
-	 use the terminal's capabilities.  If we're growing the number
-	 of lines, make sure we actually cause the new line to wrap
-	 around on auto-wrapping terminals. */
-      if (_rl_terminal_can_insert && ((2 * col_temp) >= col_lendiff || _rl_term_IC) && (!_rl_term_autowrap || !gl))
-	{
-	  /* If lendiff > prompt_visible_length and _rl_last_c_pos == 0 and
-	     _rl_horizontal_scroll_mode == 1, inserting the characters with
-	     _rl_term_IC or _rl_term_ic will screw up the screen because of the
-	     invisible characters.  We need to just draw them. */
-	  if (*ols && (!_rl_horizontal_scroll_mode || _rl_last_c_pos > 0 ||
-			lendiff <= prompt_visible_length || !current_invis_chars))
-	    {
-	      insert_some_chars (nfd, lendiff, col_lendiff);
-	      _rl_last_c_pos += col_lendiff;
-	    }
-	  else if ((MB_CUR_MAX == 1 || rl_byte_oriented != 0) && *ols == 0 && lendiff > 0)
-	    {
-	      /* At the end of a line the characters do not have to
-		 be "inserted".  They can just be placed on the screen. */
-	      /* However, this screws up the rest of this block, which
-		 assumes you've done the insert because you can. */
-	      _rl_output_some_chars (nfd, lendiff);
-	      _rl_last_c_pos += col_lendiff;
-	    }
-	  else
-	    {
-	      /* We have horizontal scrolling and we are not inserting at
-		 the end.  We have invisible characters in this line.  This
-		 is a dumb update. */
-	      _rl_output_some_chars (nfd, temp);
-	      _rl_last_c_pos += col_temp;
-	      return;
-	    }
-	  /* Copy (new) chars to screen from first diff to last match. */
-	  temp = nls - nfd;
-	  if ((temp - lendiff) > 0)
-	    {
-	      _rl_output_some_chars (nfd + lendiff, temp - lendiff);
-#if 1
-	     /* XXX -- this bears closer inspection.  Fixes a redisplay bug
-		reported against bash-3.0-alpha by Andreas Schwab involving
-		multibyte characters and prompt strings with invisible
-		characters, but was previously disabled. */
-	      _rl_last_c_pos += _rl_col_width (nfd+lendiff, 0, temp-col_lendiff);
-#else
-	      _rl_last_c_pos += _rl_col_width (nfd+lendiff, 0, temp-lendiff);
-#endif
-	    }
-	}
-      else
-	{
-	  /* cannot insert chars, write to EOL */
-	  _rl_output_some_chars (nfd, temp);
-	  _rl_last_c_pos += col_temp;
-	  /* If we're in a multibyte locale and were before the last invisible
-	     char in the current line (which implies we just output some invisible
-	     characters) we need to adjust _rl_last_c_pos, since it represents
-	     a physical character position. */
-	}
-    }
-  else				/* Delete characters from line. */
-    {
-      /* If possible and inexpensive to use terminal deletion, then do so. */
-      if (_rl_term_dc && (2 * col_temp) >= -col_lendiff)
-	{
-	  /* If all we're doing is erasing the invisible characters in the
-	     prompt string, don't bother.  It screws up the assumptions
-	     about what's on the screen. */
-	  if (_rl_horizontal_scroll_mode && _rl_last_c_pos == 0 &&
-	      -lendiff == visible_wrap_offset)
-	    col_lendiff = 0;
-
-	  if (col_lendiff)
-	    delete_chars (-col_lendiff); /* delete (diff) characters */
-
-	  /* Copy (new) chars to screen from first diff to last match */
-	  temp = nls - nfd;
-	  if (temp > 0)
-	    {
-	      _rl_output_some_chars (nfd, temp);
-	      _rl_last_c_pos += _rl_col_width (nfd, 0, temp);;
-	    }
-	}
-      /* Otherwise, print over the existing material. */
-      else
-	{
-	  if (temp > 0)
-	    {
-	      _rl_output_some_chars (nfd, temp);
-	      _rl_last_c_pos += col_temp;		/* XXX */
-	    }
-	  lendiff = (oe - old) - (ne - new);
-	  if (MB_CUR_MAX > 1 && rl_byte_oriented == 0)
-	    col_lendiff = _rl_col_width (old, 0, oe - old) - _rl_col_width (new, 0, ne - new);
-	  else
-	    col_lendiff = lendiff;
-
-	  if (col_lendiff)
-	    {	  
-	      if (_rl_term_autowrap && current_line < inv_botlin)
-		space_to_eol (col_lendiff);
-	      else
-		_rl_clear_to_eol (col_lendiff);
-	    }
-	}
-    }
-}
-
-/* Tell the update routines that we have moved onto a new (empty) line. */
-int
-rl_on_new_line ()
-{
-  if (visible_line)
-    visible_line[0] = '\0';
-
-  _rl_last_c_pos = _rl_last_v_pos = 0;
-  _rl_vis_botlin = last_lmargin = 0;
-  if (vis_lbreaks)
-    vis_lbreaks[0] = vis_lbreaks[1] = 0;
-  visible_wrap_offset = 0;
-  return 0;
-}
-
-/* Tell the update routines that we have moved onto a new line with the
-   prompt already displayed.  Code originally from the version of readline
-   distributed with CLISP.  rl_expand_prompt must have already been called
-   (explicitly or implicitly).  This still doesn't work exactly right. */
-int
-rl_on_new_line_with_prompt ()
-{
-  int prompt_size, i, l, real_screenwidth, newlines;
-  char *prompt_last_line, *lprompt;
-
-  /* Initialize visible_line and invisible_line to ensure that they can hold
-     the already-displayed prompt. */
-  prompt_size = strlen (rl_prompt) + 1;
-  init_line_structures (prompt_size);
-
-  /* Make sure the line structures hold the already-displayed prompt for
-     redisplay. */
-  lprompt = local_prompt ? local_prompt : rl_prompt;
-  strcpy (visible_line, lprompt);
-  strcpy (invisible_line, lprompt);
-
-  /* If the prompt contains newlines, take the last tail. */
-  prompt_last_line = strrchr (rl_prompt, '\n');
-  if (!prompt_last_line)
-    prompt_last_line = rl_prompt;
-
-  l = strlen (prompt_last_line);
-  if (MB_CUR_MAX > 1 && rl_byte_oriented == 0)
-    _rl_last_c_pos = _rl_col_width (prompt_last_line, 0, l);	/* XXX */
-  else
-    _rl_last_c_pos = l;
-
-  /* Dissect prompt_last_line into screen lines. Note that here we have
-     to use the real screenwidth. Readline's notion of screenwidth might be
-     one less, see terminal.c. */
-  real_screenwidth = _rl_screenwidth + (_rl_term_autowrap ? 0 : 1);
-  _rl_last_v_pos = l / real_screenwidth;
-  /* If the prompt length is a multiple of real_screenwidth, we don't know
-     whether the cursor is at the end of the last line, or already at the
-     beginning of the next line. Output a newline just to be safe. */
-  if (l > 0 && (l % real_screenwidth) == 0)
-    _rl_output_some_chars ("\n", 1);
-  last_lmargin = 0;
-
-  newlines = 0; i = 0;
-  while (i <= l)
-    {
-      _rl_vis_botlin = newlines;
-      vis_lbreaks[newlines++] = i;
-      i += real_screenwidth;
-    }
-  vis_lbreaks[newlines] = l;
-  visible_wrap_offset = 0;
-
-  rl_display_prompt = rl_prompt;	/* XXX - make sure it's set */
-
-  return 0;
-}
-
-/* Actually update the display, period. */
-int
-rl_forced_update_display ()
-{
-  register char *temp;
-
-  if (visible_line)
-    {
-      temp = visible_line;
-      while (*temp)
-	*temp++ = '\0';
-    }
-  rl_on_new_line ();
-  forced_display++;
-  (*rl_redisplay_function) ();
-  return 0;
-}
-
-/* Move the cursor from _rl_last_c_pos to NEW, which are buffer indices.
-   (Well, when we don't have multibyte characters, _rl_last_c_pos is a
-   buffer index.)
-   DATA is the contents of the screen line of interest; i.e., where
-   the movement is being done. */
-void
-_rl_move_cursor_relative (new, data)
-     int new;
-     const char *data;
-{
-  register int i;
-  int woff;			/* number of invisible chars on current line */
-  int cpos, dpos;		/* current and desired cursor positions */
-
-  woff = W_OFFSET (_rl_last_v_pos, wrap_offset);
-  cpos = _rl_last_c_pos;
-#if defined (HANDLE_MULTIBYTE)
-  /* If we have multibyte characters, NEW is indexed by the buffer point in
-     a multibyte string, but _rl_last_c_pos is the display position.  In
-     this case, NEW's display position is not obvious and must be
-     calculated.  We need to account for invisible characters in this line,
-     as long as we are past them and they are counted by _rl_col_width. */
-  if (MB_CUR_MAX > 1 && rl_byte_oriented == 0)
-    {
-      dpos = _rl_col_width (data, 0, new);
-      if (dpos > prompt_last_invisible)		/* XXX - don't use woff here */
-	{
-	  dpos -= woff;
-	  /* Since this will be assigned to _rl_last_c_pos at the end (more
-	     precisely, _rl_last_c_pos == dpos when this function returns),
-	     let the caller know. */
-	  cpos_adjusted = 1;
-	}
-    }
-  else
-#endif
-    dpos = new;
-
-  /* If we don't have to do anything, then return. */
-  if (cpos == dpos)
-    return;
-
-  /* It may be faster to output a CR, and then move forwards instead
-     of moving backwards. */
-  /* i == current physical cursor position. */
-#if defined (HANDLE_MULTIBYTE)
-  if (MB_CUR_MAX > 1 && rl_byte_oriented == 0)
-    i = _rl_last_c_pos;
-  else
-#endif
-  i = _rl_last_c_pos - woff;
-  if (dpos == 0 || CR_FASTER (dpos, _rl_last_c_pos) ||
-      (_rl_term_autowrap && i == _rl_screenwidth))
-    {
-#if defined (__MSDOS__)
-      putc ('\r', rl_outstream);
-#else
-      tputs (_rl_term_cr, 1, _rl_output_character_function);
-#endif /* !__MSDOS__ */
-      cpos = _rl_last_c_pos = 0;
-    }
-
-  if (cpos < dpos)
-    {
-      /* Move the cursor forward.  We do it by printing the command
-	 to move the cursor forward if there is one, else print that
-	 portion of the output buffer again.  Which is cheaper? */
-
-      /* The above comment is left here for posterity.  It is faster
-	 to print one character (non-control) than to print a control
-	 sequence telling the terminal to move forward one character.
-	 That kind of control is for people who don't know what the
-	 data is underneath the cursor. */
-
-      /* However, we need a handle on where the current display position is
-	 in the buffer for the immediately preceding comment to be true.
-	 In multibyte locales, we don't currently have that info available.
-	 Without it, we don't know where the data we have to display begins
-	 in the buffer and we have to go back to the beginning of the screen
-	 line.  In this case, we can use the terminal sequence to move forward
-	 if it's available. */
-      if (MB_CUR_MAX > 1 && rl_byte_oriented == 0)
-	{
-	  if (_rl_term_forward_char)
-	    {
-	      for (i = cpos; i < dpos; i++)
-	        tputs (_rl_term_forward_char, 1, _rl_output_character_function);
-	    }
-	  else
-	    {
-	      tputs (_rl_term_cr, 1, _rl_output_character_function);
-	      for (i = 0; i < new; i++)
-		putc (data[i], rl_outstream);
-	    }
-	}
-      else
-	for (i = cpos; i < new; i++)
-	  putc (data[i], rl_outstream);
-    }
-
-#if defined (HANDLE_MULTIBYTE)
-  /* NEW points to the buffer point, but _rl_last_c_pos is the display point.
-     The byte length of the string is probably bigger than the column width
-     of the string, which means that if NEW == _rl_last_c_pos, then NEW's
-     display point is less than _rl_last_c_pos. */
-#endif
-  else if (cpos > dpos)
-    _rl_backspace (cpos - dpos);
-
-  _rl_last_c_pos = dpos;
-}
-
-/* PWP: move the cursor up or down. */
-void
-_rl_move_vert (to)
-     int to;
-{
-  register int delta, i;
-
-  if (_rl_last_v_pos == to || to > _rl_screenheight)
-    return;
-
-  if ((delta = to - _rl_last_v_pos) > 0)
-    {
-      for (i = 0; i < delta; i++)
-	putc ('\n', rl_outstream);
-#if defined (__MSDOS__)
-      putc ('\r', rl_outstream);
-#else
-      tputs (_rl_term_cr, 1, _rl_output_character_function);
-#endif
-      _rl_last_c_pos = 0;
-    }
-  else
-    {			/* delta < 0 */
-      if (_rl_term_up && *_rl_term_up)
-	for (i = 0; i < -delta; i++)
-	  tputs (_rl_term_up, 1, _rl_output_character_function);
-    }
-
-  _rl_last_v_pos = to;		/* Now TO is here */
-}
-
-/* Physically print C on rl_outstream.  This is for functions which know
-   how to optimize the display.  Return the number of characters output. */
-int
-rl_show_char (c)
-     int c;
-{
-  int n = 1;
-  if (META_CHAR (c) && (_rl_output_meta_chars == 0))
-    {
-      fprintf (rl_outstream, "M-");
-      n += 2;
-      c = UNMETA (c);
-    }
-
-#if defined (DISPLAY_TABS)
-  if ((CTRL_CHAR (c) && c != '\t') || c == RUBOUT)
-#else
-  if (CTRL_CHAR (c) || c == RUBOUT)
-#endif /* !DISPLAY_TABS */
-    {
-      fprintf (rl_outstream, "C-");
-      n += 2;
-      c = CTRL_CHAR (c) ? UNCTRL (c) : '?';
-    }
-
-  putc (c, rl_outstream);
-  fflush (rl_outstream);
-  return n;
-}
-
-int
-rl_character_len (c, pos)
-     register int c, pos;
-{
-  unsigned char uc;
-
-  uc = (unsigned char)c;
-
-  if (META_CHAR_FOR_UCHAR(uc))
-    return ((_rl_output_meta_chars == 0) ? 4 : 1);
-
-  if (uc == '\t')
-    {
-#if defined (DISPLAY_TABS)
-      return (((pos | 7) + 1) - pos);
-#else
-      return (2);
-#endif /* !DISPLAY_TABS */
-    }
-
-  if (CTRL_CHAR (c) || c == RUBOUT)
-    return (2);
-
-  return ((ISPRINT (uc)) ? 1 : 2);
-}
-/* How to print things in the "echo-area".  The prompt is treated as a
-   mini-modeline. */
-static int msg_saved_prompt = 0;
-
-#if defined (USE_VARARGS)
-int
-#if defined (PREFER_STDARG)
-rl_message (const char *format, ...)
-#else
-rl_message (va_alist)
-     va_dcl
-#endif
-{
-  va_list args;
-#if defined (PREFER_VARARGS)
-  char *format;
-#endif
-
-#if defined (PREFER_STDARG)
-  va_start (args, format);
-#else
-  va_start (args);
-  format = va_arg (args, char *);
-#endif
-
-#if defined (HAVE_VSNPRINTF)
-  vsnprintf (msg_buf, sizeof (msg_buf) - 1, format, args);
-#else
-  vsprintf (msg_buf, format, args);
-  msg_buf[sizeof(msg_buf) - 1] = '\0';	/* overflow? */
-#endif
-  va_end (args);
-
-  if (saved_local_prompt == 0)
-    {
-      rl_save_prompt ();
-      msg_saved_prompt = 1;
-    }
-  rl_display_prompt = msg_buf;
-  local_prompt = expand_prompt (msg_buf, &prompt_visible_length,
-					 &prompt_last_invisible,
-					 &prompt_invis_chars_first_line,
-					 &prompt_physical_chars);
-  local_prompt_prefix = (char *)NULL;
-  local_prompt_len = local_prompt ? strlen (local_prompt) : 0;
-  (*rl_redisplay_function) ();
-
-  return 0;
-}
-#else /* !USE_VARARGS */
-int
-rl_message (format, arg1, arg2)
-     char *format;
-{
-  sprintf (msg_buf, format, arg1, arg2);
-  msg_buf[sizeof(msg_buf) - 1] = '\0';	/* overflow? */
-
-  rl_display_prompt = msg_buf;
-  if (saved_local_prompt == 0)
-    {
-      rl_save_prompt ();
-      msg_saved_prompt = 1;
-    }
-  local_prompt = expand_prompt (msg_buf, &prompt_visible_length,
-					 &prompt_last_invisible,
-					 &prompt_invis_chars_first_line,
-					 &prompt_physical_chars);
-  local_prompt_prefix = (char *)NULL;
-  local_prompt_len = local_prompt ? strlen (local_prompt) : 0;
-  (*rl_redisplay_function) ();
-      
-  return 0;
-}
-#endif /* !USE_VARARGS */
-
-/* How to clear things from the "echo-area". */
-int
-rl_clear_message ()
-{
-  rl_display_prompt = rl_prompt;
-  if (msg_saved_prompt)
-    {
-      rl_restore_prompt ();
-      msg_saved_prompt = 0;
-    }
-  (*rl_redisplay_function) ();
-  return 0;
-}
-
-int
-rl_reset_line_state ()
-{
-  rl_on_new_line ();
-
-  rl_display_prompt = rl_prompt ? rl_prompt : "";
-  forced_display = 1;
-  return 0;
-}
-
-void
-rl_save_prompt ()
-{
-  saved_local_prompt = local_prompt;
-  saved_local_prefix = local_prompt_prefix;
-  saved_prefix_length = prompt_prefix_length;
-  saved_local_length = local_prompt_len;
-  saved_last_invisible = prompt_last_invisible;
-  saved_visible_length = prompt_visible_length;
-  saved_invis_chars_first_line = prompt_invis_chars_first_line;
-  saved_physical_chars = prompt_physical_chars;
-
-  local_prompt = local_prompt_prefix = (char *)0;
-  local_prompt_len = 0;
-  prompt_last_invisible = prompt_visible_length = prompt_prefix_length = 0;
-  prompt_invis_chars_first_line = prompt_physical_chars = 0;
-}
-
-void
-rl_restore_prompt ()
-{
-  FREE (local_prompt);
-  FREE (local_prompt_prefix);
-
-  local_prompt = saved_local_prompt;
-  local_prompt_prefix = saved_local_prefix;
-  local_prompt_len = saved_local_length;
-  prompt_prefix_length = saved_prefix_length;
-  prompt_last_invisible = saved_last_invisible;
-  prompt_visible_length = saved_visible_length;
-  prompt_invis_chars_first_line = saved_invis_chars_first_line;
-  prompt_physical_chars = saved_physical_chars;
-
-  /* can test saved_local_prompt to see if prompt info has been saved. */
-  saved_local_prompt = saved_local_prefix = (char *)0;
-  saved_local_length = 0;
-  saved_last_invisible = saved_visible_length = saved_prefix_length = 0;
-  saved_invis_chars_first_line = saved_physical_chars = 0;
-}
-
-char *
-_rl_make_prompt_for_search (pchar)
-     int pchar;
-{
-  int len;
-  char *pmt, *p;
-
-  rl_save_prompt ();
-
-  /* We've saved the prompt, and can do anything with the various prompt
-     strings we need before they're restored.  We want the unexpanded
-     portion of the prompt string after any final newline. */
-  p = rl_prompt ? strrchr (rl_prompt, '\n') : 0;
-  if (p == 0)
-    {
-      len = (rl_prompt && *rl_prompt) ? strlen (rl_prompt) : 0;
-      pmt = (char *)xmalloc (len + 2);
-      if (len)
-	strcpy (pmt, rl_prompt);
-      pmt[len] = pchar;
-      pmt[len+1] = '\0';
-    }
-  else
-    {
-      p++;
-      len = strlen (p);
-      pmt = (char *)xmalloc (len + 2);
-      if (len)
-	strcpy (pmt, p);
-      pmt[len] = pchar;
-      pmt[len+1] = '\0';
-    }  
-
-  /* will be overwritten by expand_prompt, called from rl_message */
-  prompt_physical_chars = saved_physical_chars + 1;
-  return pmt;
-}
-
-/* Quick redisplay hack when erasing characters at the end of the line. */
-void
-_rl_erase_at_end_of_line (l)
-     int l;
-{
-  register int i;
-
-  _rl_backspace (l);
-  for (i = 0; i < l; i++)
-    putc (' ', rl_outstream);
-  _rl_backspace (l);
-  for (i = 0; i < l; i++)
-    visible_line[--_rl_last_c_pos] = '\0';
-  rl_display_fixed++;
-}
-
-/* Clear to the end of the line.  COUNT is the minimum
-   number of character spaces to clear, */
-void
-_rl_clear_to_eol (count)
-     int count;
-{
-  if (_rl_term_clreol)
-    tputs (_rl_term_clreol, 1, _rl_output_character_function);
-  else if (count)
-    space_to_eol (count);
-}
-
-/* Clear to the end of the line using spaces.  COUNT is the minimum
-   number of character spaces to clear, */
-static void
-space_to_eol (count)
-     int count;
-{
-  register int i;
-
-  for (i = 0; i < count; i++)
-   putc (' ', rl_outstream);
-
-  _rl_last_c_pos += count;
-}
-
-void
-_rl_clear_screen ()
-{
-  if (_rl_term_clrpag)
-    tputs (_rl_term_clrpag, 1, _rl_output_character_function);
-  else
-    rl_crlf ();
-}
-
-/* Insert COUNT characters from STRING to the output stream at column COL. */
-static void
-insert_some_chars (string, count, col)
-     char *string;
-     int count, col;
-{
-#if defined (__MSDOS__) || defined (__MINGW32__)
-  _rl_output_some_chars (string, count);
-#else
-  /* DEBUGGING */
-  if (MB_CUR_MAX == 1 || rl_byte_oriented)
-    if (count != col)
-      fprintf(stderr, "readline: debug: insert_some_chars: count (%d) != col (%d)\n", count, col);
-
-  /* If IC is defined, then we do not have to "enter" insert mode. */
-  if (_rl_term_IC)
-    {
-      char *buffer;
-
-      buffer = tgoto (_rl_term_IC, 0, col);
-      tputs (buffer, 1, _rl_output_character_function);
-      _rl_output_some_chars (string, count);
-    }
-  else
-    {
-      register int i;
-
-      /* If we have to turn on insert-mode, then do so. */
-      if (_rl_term_im && *_rl_term_im)
-	tputs (_rl_term_im, 1, _rl_output_character_function);
-
-      /* If there is a special command for inserting characters, then
-	 use that first to open up the space. */
-      if (_rl_term_ic && *_rl_term_ic)
-	{
-	  for (i = col; i--; )
-	    tputs (_rl_term_ic, 1, _rl_output_character_function);
-	}
-
-      /* Print the text. */
-      _rl_output_some_chars (string, count);
-
-      /* If there is a string to turn off insert mode, we had best use
-	 it now. */
-      if (_rl_term_ei && *_rl_term_ei)
-	tputs (_rl_term_ei, 1, _rl_output_character_function);
-    }
-#endif /* __MSDOS__ || __MINGW32__ */
-}
-
-/* Delete COUNT characters from the display line. */
-static void
-delete_chars (count)
-     int count;
-{
-  if (count > _rl_screenwidth)	/* XXX */
-    return;
-
-#if !defined (__MSDOS__) && !defined (__MINGW32__)
-  if (_rl_term_DC && *_rl_term_DC)
-    {
-      char *buffer;
-      buffer = tgoto (_rl_term_DC, count, count);
-      tputs (buffer, count, _rl_output_character_function);
-    }
-  else
-    {
-      if (_rl_term_dc && *_rl_term_dc)
-	while (count--)
-	  tputs (_rl_term_dc, 1, _rl_output_character_function);
-    }
-#endif /* !__MSDOS__ && !__MINGW32__ */
-}
-
-void
-_rl_update_final ()
-{
-  int full_lines;
-
-  full_lines = 0;
-  /* If the cursor is the only thing on an otherwise-blank last line,
-     compensate so we don't print an extra CRLF. */
-  if (_rl_vis_botlin && _rl_last_c_pos == 0 &&
-	visible_line[vis_lbreaks[_rl_vis_botlin]] == 0)
-    {
-      _rl_vis_botlin--;
-      full_lines = 1;
-    }
-  _rl_move_vert (_rl_vis_botlin);
-  /* If we've wrapped lines, remove the final xterm line-wrap flag. */
-  if (full_lines && _rl_term_autowrap && (VIS_LLEN(_rl_vis_botlin) == _rl_screenwidth))
-    {
-      char *last_line;
-
-      last_line = &visible_line[vis_lbreaks[_rl_vis_botlin]];
-      cpos_buffer_position = -1;	/* don't know where we are in buffer */
-      _rl_move_cursor_relative (_rl_screenwidth - 1, last_line);	/* XXX */
-      _rl_clear_to_eol (0);
-      putc (last_line[_rl_screenwidth - 1], rl_outstream);
-    }
-  _rl_vis_botlin = 0;
-  rl_crlf ();
-  fflush (rl_outstream);
-  rl_display_fixed++;
-}
-
-/* Move to the start of the current line. */
-static void
-cr ()
-{
-  if (_rl_term_cr)
-    {
-#if defined (__MSDOS__)
-      putc ('\r', rl_outstream);
-#else
-      tputs (_rl_term_cr, 1, _rl_output_character_function);
-#endif
-      _rl_last_c_pos = 0;
-    }
-}
-
-/* Redraw the last line of a multi-line prompt that may possibly contain
-   terminal escape sequences.  Called with the cursor at column 0 of the
-   line to draw the prompt on. */
-static void
-redraw_prompt (t)
-     char *t;
-{
-  const char *oldp;
-
-  oldp = rl_display_prompt;
-  rl_save_prompt ();
-
-  rl_display_prompt = t;
-  local_prompt = expand_prompt (t, &prompt_visible_length,
-				   &prompt_last_invisible,
-				   &prompt_invis_chars_first_line,
-				   &prompt_physical_chars);
-  local_prompt_prefix = (char *)NULL;
-  local_prompt_len = local_prompt ? strlen (local_prompt) : 0;
-
-  rl_forced_update_display ();
-
-  rl_display_prompt = oldp;
-  rl_restore_prompt();
-}
-      
-/* Redisplay the current line after a SIGWINCH is received. */
-void
-_rl_redisplay_after_sigwinch ()
-{
-  char *t;
-
-  /* Clear the current line and put the cursor at column 0.  Make sure
-     the right thing happens if we have wrapped to a new screen line. */
-  if (_rl_term_cr)
-    {
-#if defined (__MSDOS__)
-      putc ('\r', rl_outstream);
-#else
-      tputs (_rl_term_cr, 1, _rl_output_character_function);
-#endif
-      _rl_last_c_pos = 0;
-#if defined (__MSDOS__)
-      space_to_eol (_rl_screenwidth);
-      putc ('\r', rl_outstream);
-#else
-      if (_rl_term_clreol)
-	tputs (_rl_term_clreol, 1, _rl_output_character_function);
-      else
-	{
-	  space_to_eol (_rl_screenwidth);
-	  tputs (_rl_term_cr, 1, _rl_output_character_function);
-	}
-#endif
-      if (_rl_last_v_pos > 0)
-	_rl_move_vert (0);
-    }
-  else
-    rl_crlf ();
-
-  /* Redraw only the last line of a multi-line prompt. */
-  t = strrchr (rl_display_prompt, '\n');
-  if (t)
-    redraw_prompt (++t);
-  else
-    rl_forced_update_display ();
-}
-
-void
-_rl_clean_up_for_exit ()
-{
-  if (readline_echoing_p)
-    {
-      _rl_move_vert (_rl_vis_botlin);
-      _rl_vis_botlin = 0;
-      fflush (rl_outstream);
-      rl_restart_output (1, 0);
-    }
-}
-
-void
-_rl_erase_entire_line ()
-{
-  cr ();
-  _rl_clear_to_eol (0);
-  cr ();
-  fflush (rl_outstream);
-}
-
-/* return the `current display line' of the cursor -- the number of lines to
-   move up to get to the first screen line of the current readline line. */
-int
-_rl_current_display_line ()
-{
-  int ret, nleft;
-
-  /* Find out whether or not there might be invisible characters in the
-     editing buffer. */
-  if (rl_display_prompt == rl_prompt)
-    nleft = _rl_last_c_pos - _rl_screenwidth - rl_visible_prompt_length;
-  else
-    nleft = _rl_last_c_pos - _rl_screenwidth;
-
-  if (nleft > 0)
-    ret = 1 + nleft / _rl_screenwidth;
-  else
-    ret = 0;
-
-  return ret;
-}
-
-#if defined (HANDLE_MULTIBYTE)
-/* Calculate the number of screen columns occupied by STR from START to END.
-   In the case of multibyte characters with stateful encoding, we have to
-   scan from the beginning of the string to take the state into account. */
-static int
-_rl_col_width (str, start, end)
-     const char *str;
-     int start, end;
-{
-  wchar_t wc;
-  mbstate_t ps;
-  int tmp, point, width, max;
-
-  if (end <= start)
-    return 0;
-
-  memset (&ps, 0, sizeof (mbstate_t));
-
-  point = 0;
-  max = end;
-
-  while (point < start)
-    {
-      tmp = mbrlen (str + point, max, &ps);
-      if (MB_INVALIDCH ((size_t)tmp))
-	{
-	  /* In this case, the bytes are invalid or too short to compose a
-	     multibyte character, so we assume that the first byte represents
-	     a single character. */
-	  point++;
-	  max--;
-
-	  /* 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 (MB_NULLWCH (tmp))
-	break;		/* Found '\0' */
-      else
-	{
-	  point += tmp;
-	  max -= tmp;
-	}
-    }
-
-  /* If START is not a byte that starts a character, then POINT will be
-     greater than START.  In this case, assume that (POINT - START) gives
-     a byte count that is the number of columns of difference. */
-  width = point - start;
-
-  while (point < end)
-    {
-      tmp = mbrtowc (&wc, str + point, max, &ps);
-      if (MB_INVALIDCH ((size_t)tmp))
-	{
-	  /* In this case, the bytes are invalid or too short to compose a
-	     multibyte character, so we assume that the first byte represents
-	     a single character. */
-	  point++;
-	  max--;
-
-	  /* and assume that the byte occupies a single column. */
-	  width++;
-
-	  /* 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 (MB_NULLWCH (tmp))
-	break;			/* Found '\0' */
-      else
-	{
-	  point += tmp;
-	  max -= tmp;
-	  tmp = wcwidth(wc);
-	  width += (tmp >= 0) ? tmp : 1;
-	}
-    }
-
-  width += point - end;
-
-  return width;
-}
-#endif /* HANDLE_MULTIBYTE */