Merge local changes

9 files changed, 836 insertions, 616 deletions

diff --git a/contrib/libreadline/FREEBSD-upgrade b/contrib/libreadline/FREEBSD-upgrade
index a90085e..ec440bd 100644
--- a/contrib/libreadline/FREEBSD-upgrade
+++ b/contrib/libreadline/FREEBSD-upgrade
@@ -1,3 +1,5 @@
+# $FreeBSD$
 mv doc/readline.3 .
+mv doc/history.3 .
 rm doc/*.dvi doc/*.html doc/*.ps doc/*.0 doc/*.info doc/*.tex doc/texi2*
 rm savestring.c
diff --git a/contrib/libreadline/complete.c b/contrib/libreadline/complete.c
index b8d1f6a..24a4fbb 100644
--- a/contrib/libreadline/complete.c
+++ b/contrib/libreadline/complete.c
@@ -50,18 +50,6 @@ extern int errno;
 #endif /* !errno */
 
 #include <pwd.h>
-#if !defined (HAVE_GETPW_DECLS)
-extern struct passwd *getpwent ();
-#endif /* USG && !HAVE_GETPW_DECLS */
-
-/* ISC systems don't define getpwent() if _POSIX_SOURCE is defined. */
-#if defined (isc386) && defined (_POSIX_SOURCE)
-#  if defined (__STDC__)
-extern struct passwd *getpwent (void);
-#  else
-extern struct passwd *getpwent ();
-#  endif /* !__STDC__ */
-#endif /* isc386 && _POSIX_SOURCE */
 
 #include "posixdir.h"
 #include "posixstat.h"
@@ -80,6 +68,12 @@ typedef int QSFUNC (const void *, const void *);
 typedef int QSFUNC ();
 #endif
 
+/* Most systems don't declare getpwent in <pwd.h> if _POSIX_SOURCE is
+   defined. */
+#if !defined (HAVE_GETPW_DECLS) || defined (_POSIX_SOURCE)
+extern struct passwd *getpwent __P((void));
+#endif /* !HAVE_GETPW_DECLS || _POSIX_SOURCE */
+
 /* If non-zero, then this is the address of a function to call when
    completing a word would normally display the list of possible matches.
    This function is called instead of actually doing the display.
@@ -87,11 +81,7 @@ typedef int QSFUNC ();
    where MATCHES is the array of strings that matched, NUM_MATCHES is the
    number of strings in that array, and MAX_LENGTH is the length of the
    longest string in that array. */
-VFunction *rl_completion_display_matches_hook = (VFunction *)NULL;
-
-/* Forward declarations for functions defined and used in this file. */
-char *filename_completion_function __P((char *, int));
-char **completion_matches __P((char *, CPFunction *));
+rl_compdisp_func_t *rl_completion_display_matches_hook = (rl_compdisp_func_t *)NULL;
 
 #if defined (VISIBLE_STATS)
 #  if !defined (X_OK)
@@ -101,14 +91,13 @@ static int stat_char __P((char *));
 #endif
 
 static char *rl_quote_filename __P((char *, int, char *));
-static char *rl_strpbrk __P((char *, char *));
 
 static char **remove_duplicate_matches __P((char **));
 static void insert_match __P((char *, int, int, char *));
 static int append_to_match __P((char *, int, int));
 static void insert_all_matches __P((char **, int, char *));
 static void display_matches __P((char **));
-static int compute_lcd_of_matches __P((char **, int, char *));
+static int compute_lcd_of_matches __P((char **, int, const char *));
 
 /* **************************************************************** */
 /*								    */
@@ -147,15 +136,17 @@ int rl_visible_stats = 0;
 /* If non-zero, then this is the address of a function to call when
    completing on a directory name.  The function is called with
    the address of a string (the current directory name) as an arg. */
-Function *rl_directory_completion_hook = (Function *)NULL;
+rl_icppfunc_t *rl_directory_completion_hook = (rl_icppfunc_t *)NULL;
+
+rl_icppfunc_t *rl_directory_rewrite_hook = (rl_icppfunc_t *)NULL;
 
 /* Non-zero means readline completion functions perform tilde expansion. */
 int rl_complete_with_tilde_expansion = 0;
 
 /* Pointer to the generator function for completion_matches ().
-   NULL means to use filename_completion_function (), the default filename
+   NULL means to use rl_filename_completion_function (), the default filename
    completer. */
-Function *rl_completion_entry_function = (Function *)NULL;
+rl_compentry_func_t *rl_completion_entry_function = (rl_compentry_func_t *)NULL;
 
 /* Pointer to alternative function to create matches.
    Function is called with TEXT, START, and END.
@@ -164,7 +155,7 @@ Function *rl_completion_entry_function = (Function *)NULL;
    If this function exists and returns NULL then call the value of
    rl_completion_entry_function to try to match, otherwise use the
    array of strings returned. */
-CPPFunction *rl_attempted_completion_function = (CPPFunction *)NULL;
+rl_completion_func_t *rl_attempted_completion_function = (rl_completion_func_t *)NULL;
 
 /* Non-zero means to suppress normal filename completion after the
    user-specified completion function has been called. */
@@ -183,29 +174,29 @@ int rl_completion_query_items = 100;
 /* The basic list of characters that signal a break between words for the
    completer routine.  The contents of this variable is what breaks words
    in the shell, i.e. " \t\n\"\\'`@$><=" */
-char *rl_basic_word_break_characters = " \t\n\"\\'`@$><=;|&{(";
+const char *rl_basic_word_break_characters = " \t\n\"\\'`@$><=;|&{(";
 
 /* List of basic quoting characters. */
-char *rl_basic_quote_characters = "\"'";
+const char *rl_basic_quote_characters = "\"'";
 
 /* The list of characters that signal a break between words for
    rl_complete_internal.  The default list is the contents of
    rl_basic_word_break_characters.  */
-char *rl_completer_word_break_characters = (char *)NULL;
+const char *rl_completer_word_break_characters = (const char *)NULL;
 
 /* List of characters which can be used to quote a substring of the line.
    Completion occurs on the entire substring, and within the substring
    rl_completer_word_break_characters are treated as any other character,
    unless they also appear within this list. */
-char *rl_completer_quote_characters = (char *)NULL;
+const char *rl_completer_quote_characters = (const char *)NULL;
 
 /* List of characters that should be quoted in filenames by the completer. */
-char *rl_filename_quote_characters = (char *)NULL;
+const char *rl_filename_quote_characters = (const char *)NULL;
 
 /* List of characters that are word break characters, but should be left
    in TEXT when it is passed to the completion function.  The shell uses
    this to help determine what kind of completing to do. */
-char *rl_special_prefixes = (char *)NULL;
+const char *rl_special_prefixes = (const char *)NULL;
 
 /* If non-zero, then disallow duplicates in the matches. */
 int rl_ignore_completion_duplicates = 1;
@@ -231,24 +222,24 @@ int rl_filename_quoting_desired = 1;
    the list of matches as required, but all elements of the array must be
    free()'d if they are deleted. The main intent of this function is
    to implement FIGNORE a la SunOS csh. */
-Function *rl_ignore_some_completions_function = (Function *)NULL;
+rl_compignore_func_t *rl_ignore_some_completions_function = (rl_compignore_func_t *)NULL;
 
 /* Set to a function to quote a filename in an application-specific fashion.
    Called with the text to quote, the type of match found (single or multiple)
    and a pointer to the quoting character to be used, which the function can
    reset if desired. */
-CPFunction *rl_filename_quoting_function = rl_quote_filename;
+rl_quote_func_t *rl_filename_quoting_function = rl_quote_filename;
          
 /* Function to call to remove quoting characters from a filename.  Called
    before completion is attempted, so the embedded quotes do not interfere
    with matching names in the file system.  Readline doesn't do anything
    with this; it's set only by applications. */
-CPFunction *rl_filename_dequoting_function = (CPFunction *)NULL;
+rl_dequote_func_t *rl_filename_dequoting_function = (rl_dequote_func_t *)NULL;
 
 /* Function to call to decide whether or not a word break character is
    quoted.  If a character is quoted, it does not break words for the
    completer. */
-Function *rl_char_is_quoted_p = (Function *)NULL;
+rl_linebuf_func_t *rl_char_is_quoted_p = (rl_linebuf_func_t *)NULL;
 
 /* Character appended to completed words when at the end of the line.  The
    default is a space. */
@@ -270,7 +261,7 @@ static int completion_changed_buffer;
 
 /* Complete the word at or before point.  You have supplied the function
    that does the initial simple matching selection algorithm (see
-   completion_matches ()).  The default is to do filename completion. */
+   rl_completion_matches ()).  The default is to do filename completion. */
 int
 rl_complete (ignore, invoking_key)
      int ignore, invoking_key;
@@ -306,27 +297,6 @@ rl_insert_completions (ignore, invoking_key)
 /*				    */
 /************************************/
 
-/* Find the first occurrence in STRING1 of any character from STRING2.
-   Return a pointer to the character in STRING1. */
-static char *
-rl_strpbrk (string1, string2)
-     char *string1, *string2;
-{
-  register char *scan;
-
-  for (; *string1; string1++)
-    {
-      for (scan = string2; *scan; scan++)
-	{
-	  if (*string1 == *scan)
-	    {
-	      return (string1);
-	    }
-	}
-    }
-  return ((char *)NULL);
-}
-
 /* The user must press "y" or "n". Non-zero return means "y" pressed. */
 static int
 get_y_or_n ()
@@ -335,14 +305,17 @@ get_y_or_n ()
 
   for (;;)
     {
+      RL_SETSTATE(RL_STATE_MOREINPUT);
       c = rl_read_key ();
+      RL_UNSETSTATE(RL_STATE_MOREINPUT);
+
       if (c == 'y' || c == 'Y' || c == ' ')
 	return (1);
       if (c == 'n' || c == 'N' || c == RUBOUT)
 	return (0);
       if (c == ABORT_CHAR)
 	_rl_abort_internal ();
-      ding ();
+      rl_ding ();
     }
 }
 
@@ -572,7 +545,11 @@ find_completion_word (fp, dp)
 	      continue;
 	    }
 
-	  if (rl_line_buffer[scan] == '\\')
+	  /* Shell-like semantics for single quotes -- don't allow backslash
+	     to quote anything in single quotes, especially not the closing
+	     quote.  If you don't like this, take out the check on the value
+	     of quote_char. */
+	  if (quote_char != '\'' && rl_line_buffer[scan] == '\\')
 	    {
 	      pass_next = 1;
 	      found_quote |= RL_QF_BACKSLASH;
@@ -672,7 +649,7 @@ static char **
 gen_completion_matches (text, start, end, our_func, found_quote, quote_char)
      char *text;
      int start, end;
-     Function *our_func;
+     rl_compentry_func_t *our_func;
      int found_quote, quote_char;
 {
   char **matches, *temp;
@@ -696,7 +673,7 @@ gen_completion_matches (text, start, end, our_func, found_quote, quote_char)
      filename dequoting function. */
   temp = (char *)NULL;
 
-  if (found_quote && our_func == (Function *)filename_completion_function &&
+  if (found_quote && our_func == rl_filename_completion_function &&
       rl_filename_dequoting_function)
     {
       /* delete single and double quotes */
@@ -704,7 +681,7 @@ gen_completion_matches (text, start, end, our_func, found_quote, quote_char)
       text = temp;	/* not freeing text is not a memory leak */
     }
 
-  matches = completion_matches (text, (CPFunction *)our_func);
+  matches = rl_completion_matches (text, our_func);
   FREE (temp);
   return matches;  
 }
@@ -776,7 +753,7 @@ static int
 compute_lcd_of_matches (match_list, matches, text)
      char **match_list;
      int matches;
-     char *text;
+     const char *text;
 {
   register int i, c1, c2, si;
   int low;		/* Count of max-matched characters. */
@@ -902,11 +879,11 @@ rl_display_match_list (matches, len, max)
 
   /* How many items of MAX length can we fit in the screen window? */
   max += 2;
-  limit = screenwidth / max;
-  if (limit != 1 && (limit * max == screenwidth))
+  limit = _rl_screenwidth / max;
+  if (limit != 1 && (limit * max == _rl_screenwidth))
     limit--;
 
-  /* Avoid a possible floating exception.  If max > screenwidth,
+  /* Avoid a possible floating exception.  If max > _rl_screenwidth,
      limit will be 0 and a divide-by-zero fault will result. */
   if (limit == 0)
     limit = 1;
@@ -922,7 +899,7 @@ rl_display_match_list (matches, len, max)
   if (rl_ignore_completion_duplicates == 0)
     qsort (matches + 1, len, sizeof (char *), (QSFUNC *)_rl_qsort_string_compare);
 
-  crlf ();
+  rl_crlf ();
 
   if (_rl_print_completions_horizontally == 0)
     {
@@ -944,7 +921,7 @@ rl_display_match_list (matches, len, max)
 		}
 	      l += count;
 	    }
-	  crlf ();
+	  rl_crlf ();
 	}
     }
   else
@@ -958,13 +935,13 @@ rl_display_match_list (matches, len, max)
 	  if (matches[i+1])
 	    {
 	      if (i && (limit > 1) && (i % limit) == 0)
-		crlf ();
+		rl_crlf ();
 	      else
 		for (k = 0; k < max - printed_len; k++)
 		  putc (' ', rl_outstream);
 	    }
 	}
-      crlf ();
+      rl_crlf ();
     }
 }
 
@@ -993,9 +970,9 @@ display_matches (matches)
   if (matches[1] == 0)
     {
       temp = printable_part (matches[0]);
-      crlf ();
+      rl_crlf ();
       print_filename (temp, matches[0]);
-      crlf ();
+      rl_crlf ();
 
       rl_forced_update_display ();
       rl_display_fixed = 1;
@@ -1027,12 +1004,12 @@ display_matches (matches)
      see them all. */
   if (len >= rl_completion_query_items)
     {
-      crlf ();
+      rl_crlf ();
       fprintf (rl_outstream, "Display all %d possibilities? (y or n)", len);
       fflush (rl_outstream);
       if (get_y_or_n () == 0)
 	{
-	  crlf ();
+	  rl_crlf ();
 
 	  rl_forced_update_display ();
 	  rl_display_fixed = 1;
@@ -1080,7 +1057,7 @@ make_quoted_replacement (match, mtype, qc)
          This also checks whether the common prefix of several
 	 matches needs to be quoted. */
       should_quote = rl_filename_quote_characters
-			? (rl_strpbrk (match, rl_filename_quote_characters) != 0)
+			? (_rl_strpbrk (match, rl_filename_quote_characters) != 0)
 			: 0;
 
       do_replace = should_quote ? mtype : NO_MATCH;
@@ -1233,11 +1210,12 @@ rl_complete_internal (what_to_do)
      int what_to_do;
 {
   char **matches;
-  Function *our_func;
+  rl_compentry_func_t *our_func;
   int start, end, delimiter, found_quote, i;
   char *text, *saved_line_buffer;
   char quote_char;
 
+  RL_SETSTATE(RL_STATE_COMPLETING);
   /* Only the completion entry function can change these. */
   rl_filename_completion_desired = 0;
   rl_filename_quoting_desired = 1;
@@ -1246,7 +1224,7 @@ rl_complete_internal (what_to_do)
   saved_line_buffer = rl_line_buffer ? savestring (rl_line_buffer) : (char *)NULL;
   our_func = rl_completion_entry_function
 		? rl_completion_entry_function
-		: (Function *)filename_completion_function;
+		: rl_filename_completion_function;
 
   /* We now look backwards for the start of a filename/variable word. */
   end = rl_point;
@@ -1267,27 +1245,23 @@ rl_complete_internal (what_to_do)
 
   if (matches == 0)
     {
-      ding ();
+      rl_ding ();
       FREE (saved_line_buffer);
+      RL_UNSETSTATE(RL_STATE_COMPLETING);
       return (0);
     }
 
-#if 0
-  /* If we are matching filenames, our_func will have been set to
-     filename_completion_function */
-  i = our_func == (Function *)filename_completion_function;
-#else
   /* If we are matching filenames, the attempted completion function will
      have set rl_filename_completion_desired to a non-zero value.  The basic
-     filename_completion_function does this. */
+     rl_filename_completion_function does this. */
   i = rl_filename_completion_desired;
-#endif
 
   if (postprocess_matches (&matches, i) == 0)
     {
-      ding ();
+      rl_ding ();
       FREE (saved_line_buffer);
       completion_changed_buffer = 0;
+      RL_UNSETSTATE(RL_STATE_COMPLETING);
       return (0);
     }
 
@@ -1315,7 +1289,7 @@ rl_complete_internal (what_to_do)
 	      break;
 	    }
 	  else if (rl_editing_mode != vi_mode)
-	    ding ();	/* There are other matches remaining. */
+	    rl_ding ();	/* There are other matches remaining. */
 	}
       else
 	append_to_match (matches[0], delimiter, quote_char);
@@ -1332,8 +1306,9 @@ rl_complete_internal (what_to_do)
 
     default:
       fprintf (stderr, "\r\nreadline: bad value %d for what_to_do in rl_complete\n", what_to_do);
-      ding ();
+      rl_ding ();
       FREE (saved_line_buffer);
+      RL_UNSETSTATE(RL_STATE_COMPLETING);
       return 1;
     }
 
@@ -1346,6 +1321,7 @@ rl_complete_internal (what_to_do)
       free (saved_line_buffer);
     }
 
+  RL_UNSETSTATE(RL_STATE_COMPLETING);
   return 0;
 }
 
@@ -1368,9 +1344,9 @@ rl_complete_internal (what_to_do)
      when there are no more matches.
  */
 char **
-completion_matches (text, entry_function)
-     char *text;
-     CPFunction *entry_function;
+rl_completion_matches (text, entry_function)
+     const char *text;
+     rl_compentry_func_t *entry_function;
 {
   /* Number of slots in match_list. */
   int match_list_size;
@@ -1415,8 +1391,8 @@ completion_matches (text, entry_function)
    TEXT contains a partial username preceded by a random
    character (usually `~').  */
 char *
-username_completion_function (text, state)
-     char *text;
+rl_username_completion_function (text, state)
+     const char *text;
      int state;
 {
 #if defined (__WIN32__) || defined (__OPENNT)
@@ -1472,8 +1448,8 @@ username_completion_function (text, state)
    because of all the pathnames that must be followed when looking up the
    completion for a command. */
 char *
-filename_completion_function (text, state)
-     char *text;
+rl_filename_completion_function (text, state)
+     const char *text;
      int state;
 {
   static DIR *directory = (DIR *)NULL;
@@ -1543,6 +1519,9 @@ filename_completion_function (text, state)
 	  dirname = temp;
 	}
 
+      if (rl_directory_rewrite_hook)
+	(*rl_directory_rewrite_hook) (&dirname);
+
       if (rl_directory_completion_hook && (*rl_directory_completion_hook) (&dirname))
 	{
 	  free (users_dirname);
@@ -1642,8 +1621,11 @@ filename_completion_function (text, state)
 	  else
 	    {
 	      dirlen = strlen (users_dirname);
-	      temp = xmalloc (1 + dirlen + D_NAMLEN (entry));
+	      temp = xmalloc (2 + dirlen + D_NAMLEN (entry));
 	      strcpy (temp, users_dirname);
+	      /* Make sure that temp has a trailing slash here. */
+	      if (users_dirname[dirlen - 1] != '/')
+		temp[dirlen++] = '/';
 	    }
 
 	  strcpy (temp + dirlen, entry->d_name);
@@ -1668,7 +1650,7 @@ int
 rl_menu_complete (count, ignore)
      int count, ignore;
 {
-  Function *our_func;
+  rl_compentry_func_t *our_func;
   int matching_filenames, found_quote;
 
   static char *orig_text;
@@ -1698,7 +1680,7 @@ rl_menu_complete (count, ignore)
 
       our_func = rl_completion_entry_function
 			? rl_completion_entry_function
-			: (Function *)filename_completion_function;
+			: rl_filename_completion_function;
 
       /* We now look backwards for the start of a filename/variable word. */
       orig_end = rl_point;
@@ -1717,19 +1699,14 @@ rl_menu_complete (count, ignore)
       matches = gen_completion_matches (orig_text, orig_start, orig_end,
 					our_func, found_quote, quote_char);
 
-#if 0
-      /* If we are matching filenames, our_func will have been set to
-	 filename_completion_function */
-      matching_filenames = our_func == (Function *)filename_completion_function;
-#else
       /* If we are matching filenames, the attempted completion function will
 	 have set rl_filename_completion_desired to a non-zero value.  The basic
-	 filename_completion_function does this. */
+	 rl_filename_completion_function does this. */
       matching_filenames = rl_filename_completion_desired;
-#endif
+
       if (matches == 0 || postprocess_matches (&matches, matching_filenames) == 0)
 	{
-    	  ding ();
+    	  rl_ding ();
 	  FREE (matches);
 	  matches = (char **)0;
 	  FREE (orig_text);
@@ -1750,7 +1727,7 @@ rl_menu_complete (count, ignore)
 
   if (matches == 0 || match_list_size == 0) 
     {
-      ding ();
+      rl_ding ();
       FREE (matches);
       matches = (char **)0;
       completion_changed_buffer = 0;
@@ -1763,7 +1740,7 @@ rl_menu_complete (count, ignore)
 
   if (match_list_index == 0 && match_list_size > 1)
     {
-      ding ();
+      rl_ding ();
       insert_match (orig_text, orig_start, MULT_MATCH, &quote_char);
     }
   else
diff --git a/contrib/libreadline/display.c b/contrib/libreadline/display.c
index a0f61057..6f62d16 100644
--- a/contrib/libreadline/display.c
+++ b/contrib/libreadline/display.c
@@ -60,7 +60,7 @@ extern char *strchr (), *strrchr ();
 #endif /* !strchr && !__STDC__ */
 
 #if defined (HACK_TERMCAP_MOTION)
-extern char *term_forward_char;
+extern char *_rl_term_forward_char;
 #endif
 
 static void update_line __P((char *, char *, int, int, int, int));
@@ -104,7 +104,7 @@ static int inv_lbsize, vis_lbsize;
    RL_DISPLAY_FIXED variable.  This is good for efficiency. */
 
 /* Application-specific redisplay function. */
-VFunction *rl_redisplay_function = rl_redisplay;
+rl_voidfunc_t *rl_redisplay_function = rl_redisplay;
 
 /* Global variables declared here. */
 /* What YOU turn on when you have handled all redisplay yourself. */
@@ -143,27 +143,40 @@ 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 visible_length, prefix_length;
+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;
 
-/* static so it can be shared between rl_redisplay and update_line */
+/* 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 last_invisible;
+/* 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_last_screen_line;
+
 /* 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. */
+   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. */
 
 /* Current implementation:
 	\001 (^A) start non-visible characters
@@ -173,12 +186,12 @@ static int visible_first_line_len;
    \002 are assumed to be `visible'. */	
 
 static char *
-expand_prompt (pmt, lp, lip)
+expand_prompt (pmt, lp, lip, niflp)
      char *pmt;
-     int *lp, *lip;
+     int *lp, *lip, *niflp;
 {
   char *r, *ret, *p;
-  int l, rl, last, ignoring;
+  int l, rl, last, ignoring, ninvis, invfl;
 
   /* Short-circuit if we can. */
   if (strchr (pmt, RL_PROMPT_START_IGNORE) == 0)
@@ -191,8 +204,10 @@ expand_prompt (pmt, lp, lip)
 
   l = strlen (pmt);
   r = ret = xmalloc (l + 1);
-  
-  for (rl = ignoring = last = 0, p = pmt; p && *p; p++)
+
+  invfl = 0;	/* invisible chars in first line of prompt */
+
+  for (rl = ignoring = last = ninvis = 0, p = pmt; p && *p; p++)
     {
       /* This code strips the invisible character string markers
 	 RL_PROMPT_START_IGNORE and RL_PROMPT_END_IGNORE */
@@ -212,14 +227,23 @@ expand_prompt (pmt, lp, lip)
 	  *r++ = *p;
 	  if (!ignoring)
 	    rl++;
+	  else
+	    ninvis++;
+	  if (rl == _rl_screenwidth)
+	    invfl = ninvis;
 	}
     }
 
+  if (rl < _rl_screenwidth)
+    invfl = ninvis;
+
   *r = '\0';
   if (lp)
     *lp = rl;
   if (lip)
     *lip = last;
+  if (niflp)
+    *niflp = invfl;
   return ret;
 }
 
@@ -231,7 +255,7 @@ _rl_strip_prompt (pmt)
 {
   char *ret;
 
-  ret = expand_prompt (pmt, (int *)NULL, (int *)NULL);
+  ret = expand_prompt (pmt, (int *)NULL, (int *)NULL, (int *)NULL);
   return ret;
 }
 
@@ -243,8 +267,8 @@ _rl_strip_prompt (pmt)
  *		  (portion after the final newline)
  * local_prompt_prefix = portion before last newline of rl_display_prompt,
  *			 expanded via expand_prompt
- * visible_length = number of visible characters in local_prompt
- * prefix_length = number of visible characters in local_prompt_prefix
+ * 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.
@@ -260,12 +284,11 @@ rl_expand_prompt (prompt)
   int c;
 
   /* Clear out any saved values. */
-  if (local_prompt)
-    free (local_prompt);
-  if (local_prompt_prefix)
-    free (local_prompt_prefix);
+  FREE (local_prompt);
+  FREE (local_prompt_prefix);
+
   local_prompt = local_prompt_prefix = (char *)0;
-  last_invisible = visible_length = 0;
+  prompt_last_invisible = prompt_visible_length = 0;
 
   if (prompt == 0 || *prompt == 0)
     return (0);
@@ -273,22 +296,28 @@ rl_expand_prompt (prompt)
   p = strrchr (prompt, '\n');
   if (!p)
     {
-      /* The prompt is only one line. */
-      local_prompt = expand_prompt (prompt, &visible_length, &last_invisible);
+      /* 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);
       local_prompt_prefix = (char *)0;
-      return (visible_length);
+      return (prompt_visible_length);
     }
   else
     {
       /* The prompt spans multiple lines. */
       t = ++p;
-      local_prompt = expand_prompt (p, &visible_length, &last_invisible);
+      local_prompt = expand_prompt (p, &prompt_visible_length,
+				       &prompt_last_invisible,
+				       &prompt_invis_chars_first_line);
       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, &prefix_length, (int *)NULL);
+      local_prompt_prefix = expand_prompt (prompt, &prompt_prefix_length,
+						   (int *)NULL,
+						   &prompt_invis_chars_first_line);
       *t = c;
-      return (prefix_length);
+      return (prompt_prefix_length);
     }
 }
 
@@ -400,7 +429,7 @@ rl_redisplay ()
 	  out += local_len;
 	}
       line[out] = '\0';
-      wrap_offset = local_len - visible_length;
+      wrap_offset = local_len - prompt_visible_length;
     }
   else
     {
@@ -433,7 +462,7 @@ rl_redisplay ()
       strncpy (line + out,  prompt_this_line, pmtlen);
       out += pmtlen;
       line[out] = '\0';
-      wrap_offset = 0;
+      wrap_offset = prompt_invis_chars_first_line = 0;
     }
 
 #define CHECK_INV_LBREAKS() \
@@ -448,7 +477,7 @@ rl_redisplay ()
 #define CHECK_LPOS() \
       do { \
 	lpos++; \
-	if (lpos >= screenwidth) \
+	if (lpos >= _rl_screenwidth) \
 	  { \
 	    if (newlines >= (inv_lbsize - 2)) \
 	      { \
@@ -464,21 +493,36 @@ rl_redisplay ()
   inv_lbreaks[newlines = 0] = 0;
   lpos = out - wrap_offset;
 
-  /* XXX - what if lpos is already >= screenwidth before we start drawing the
+  /* 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 >= screenwidth)
+  while (lpos >= _rl_screenwidth)
     {
-      /* XXX - possible fix from Darin Johnson <darin@acuson.com> for prompt
-	 string with invisible characters that is longer than the screen
-	 width.  XXX - this doesn't work right if invisible characters have
-	 to be put on the second screen line -- it adds too much (the number
-	 of invisible chars after the screenwidth). */
-      temp = ((newlines + 1) * screenwidth) + ((newlines == 0) ? wrap_offset : 0);
+      /* 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? */
+      temp = ((newlines + 1) * _rl_screenwidth) +
+             ((newlines == 0) ? prompt_invis_chars_first_line : 0) +
+             ((newlines == 1) ? wrap_offset : 0);
 
       inv_lbreaks[++newlines] = temp;
-      lpos -= screenwidth;
+      lpos -= _rl_screenwidth;
     }
 
+  prompt_last_screen_line = newlines;
+
+  /* Draw the rest of the line (after the prompt) into invisible_line, keeping
+     track of where the cursor is (c_pos), the number of the line containing
+     the cursor (lb_linenum), the last line number (lb_botlin and 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;
   for (in = 0; in < rl_end; in++)
     {
@@ -504,9 +548,9 @@ rl_redisplay ()
 	    {
 	      sprintf (line + out, "\\%o", c);
 
-	      if (lpos + 4 >= screenwidth)
+	      if (lpos + 4 >= _rl_screenwidth)
 		{
-		  temp = screenwidth - lpos;
+		  temp = _rl_screenwidth - lpos;
 		  CHECK_INV_LBREAKS ();
 		  inv_lbreaks[++newlines] = out + temp;
 		  lpos = 4 - temp;
@@ -525,7 +569,7 @@ rl_redisplay ()
 #if defined (DISPLAY_TABS)
       else if (c == '\t')
 	{
-	  register int temp, newout;
+	  register int newout;
 
 #if 0
 	  newout = (out | (int)7) + 1;
@@ -533,10 +577,10 @@ rl_redisplay ()
 	  newout = out + 8 - lpos % 8;
 #endif
 	  temp = newout - out;
-	  if (lpos + temp >= screenwidth)
+	  if (lpos + temp >= _rl_screenwidth)
 	    {
 	      register int temp2;
-	      temp2 = screenwidth - lpos;
+	      temp2 = _rl_screenwidth - lpos;
 	      CHECK_INV_LBREAKS ();
 	      inv_lbreaks[++newlines] = out + temp2;
 	      lpos = temp - temp2;
@@ -551,7 +595,7 @@ rl_redisplay ()
 	    }
 	}
 #endif
-      else if (c == '\n' && _rl_horizontal_scroll_mode == 0 && term_up && *term_up)
+      else if (c == '\n' && _rl_horizontal_scroll_mode == 0 && _rl_term_up && *_rl_term_up)
 	{
 	  line[out++] = '\0';	/* XXX - sentinel */
 	  CHECK_INV_LBREAKS ();
@@ -583,7 +627,8 @@ rl_redisplay ()
   inv_lbreaks[newlines+1] = out;
   cursor_linenum = lb_linenum;
 
-  /* C_POS == position in buffer where cursor should be placed. */
+  /* C_POS == 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
@@ -594,7 +639,7 @@ rl_redisplay ()
      otherwise, let long lines display in a single terminal line, and
      horizontally scroll it. */
 
-  if (_rl_horizontal_scroll_mode == 0 && term_up && *term_up)
+  if (_rl_horizontal_scroll_mode == 0 && _rl_term_up && *_rl_term_up)
     {
       int nleft, pos, changed_screen_line;
 
@@ -605,8 +650,8 @@ rl_redisplay ()
 	  /* 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 >= screenchars)
-	    out = screenchars - 1;
+	  if (out >= _rl_screenchars)
+	    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
@@ -636,7 +681,7 @@ rl_redisplay ()
 		  (wrap_offset > visible_wrap_offset) &&
 		  (_rl_last_c_pos < visible_first_line_len))
 		{
-		  nleft = screenwidth + wrap_offset - _rl_last_c_pos;
+		  nleft = _rl_screenwidth + wrap_offset - _rl_last_c_pos;
 		  if (nleft)
 		    _rl_clear_to_eol (nleft);
 		}
@@ -657,7 +702,7 @@ rl_redisplay ()
 		  _rl_move_vert (linenum);
 		  _rl_move_cursor_relative (0, tt);
 		  _rl_clear_to_eol
-		    ((linenum == _rl_vis_botlin) ? strlen (tt) : screenwidth);
+		    ((linenum == _rl_vis_botlin) ? strlen (tt) : _rl_screenwidth);
 		}
 	    }
 	  _rl_vis_botlin = inv_botlin;
@@ -668,7 +713,7 @@ rl_redisplay ()
 	  if (changed_screen_line)
 	    {
 	      _rl_move_vert (cursor_linenum);
-	      /* If we moved up to the line with the prompt using term_up,
+	      /* 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. */
@@ -681,15 +726,15 @@ rl_redisplay ()
 	     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 = visible_length + wrap_offset;
+	  nleft = prompt_visible_length + wrap_offset;
 	  if (cursor_linenum == 0 && wrap_offset > 0 && _rl_last_c_pos > 0 &&
-	      _rl_last_c_pos <= last_invisible && local_prompt)
+	      _rl_last_c_pos <= prompt_last_invisible && local_prompt)
 	    {
 #if defined (__MSDOS__)
 	      putc ('\r', rl_outstream);
 #else
-	      if (term_cr)
-		tputs (term_cr, 1, _rl_output_character_function);
+	      if (_rl_term_cr)
+		tputs (_rl_term_cr, 1, _rl_output_character_function);
 #endif
 	      _rl_output_some_chars (local_prompt, nleft);
 	      _rl_last_c_pos = nleft;
@@ -728,11 +773,11 @@ rl_redisplay ()
 
       /* The number of characters that will be displayed before the cursor. */
       ndisp = c_pos - wrap_offset;
-      nleft  = visible_length + 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 = c_pos - (last_lmargin ? last_lmargin : wrap_offset);
-      t = screenwidth / 3;
+      t = _rl_screenwidth / 3;
 
       /* If the number of characters had already exceeded the screenwidth,
 	 last_lmargin will be > 0. */
@@ -740,7 +785,7 @@ rl_redisplay ()
       /* 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 > screenwidth - 2)
+      if (phys_c_pos > _rl_screenwidth - 2)
 	{
 	  lmargin = c_pos - (2 * t);
 	  if (lmargin < 0)
@@ -750,7 +795,7 @@ rl_redisplay ()
 	  if (wrap_offset && lmargin > 0 && lmargin < nleft)
 	    lmargin = nleft;
 	}
-      else if (ndisp < screenwidth - 2)		/* XXX - was -1 */
+      else if (ndisp < _rl_screenwidth - 2)		/* XXX - was -1 */
 	lmargin = 0;
       else if (phys_c_pos < 1)
 	{
@@ -772,7 +817,7 @@ rl_redisplay ()
 	 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) + screenwidth;
+      t = lmargin + M_OFFSET (lmargin, wrap_offset) + _rl_screenwidth;
       if (t < out)
 	line[t - 1] = '>';
 
@@ -782,8 +827,8 @@ rl_redisplay ()
 	  update_line (&visible_line[last_lmargin],
 		       &invisible_line[lmargin],
 		       0,
-		       screenwidth + visible_wrap_offset,
-		       screenwidth + (lmargin ? 0 : wrap_offset),
+		       _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
@@ -794,12 +839,12 @@ rl_redisplay ()
 	      (_rl_last_c_pos == out) &&
 	      t < visible_first_line_len)
 	    {
-	      nleft = screenwidth - t;
+	      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 > screenwidth)
-	    visible_first_line_len = screenwidth;
+	  if (visible_first_line_len > _rl_screenwidth)
+	    visible_first_line_len = _rl_screenwidth;
 
 	  _rl_move_cursor_relative (c_pos - lmargin, &invisible_line[lmargin]);
 	  last_lmargin = lmargin;
@@ -809,11 +854,11 @@ rl_redisplay ()
 
   /* Swap visible and non-visible lines. */
   {
-    char *temp = visible_line;
+    char *vtemp = visible_line;
     int *itemp = vis_lbreaks, ntemp = vis_lbsize;
 
     visible_line = invisible_line;
-    invisible_line = temp;
+    invisible_line = vtemp;
 
     vis_lbreaks = inv_lbreaks;
     inv_lbreaks = itemp;
@@ -863,7 +908,7 @@ update_line (old, new, current_line, omax, nmax, inv_botlin)
      emulators.  In this calculation, TEMP is the physical screen
      position of the cursor. */
   temp = _rl_last_c_pos - W_OFFSET(_rl_last_v_pos, visible_wrap_offset);
-  if (temp == screenwidth && _rl_term_autowrap && !_rl_horizontal_scroll_mode
+  if (temp == _rl_screenwidth && _rl_term_autowrap && !_rl_horizontal_scroll_mode
       && _rl_last_v_pos == current_line - 1)
     {
       if (new[0])
@@ -940,13 +985,13 @@ update_line (old, new, current_line, omax, nmax, inv_botlin)
   lendiff = local_prompt ? strlen (local_prompt) : 0;
   od = ofd - old;	/* index of first difference in visible line */
   if (current_line == 0 && !_rl_horizontal_scroll_mode &&
-      term_cr && lendiff > visible_length && _rl_last_c_pos > 0 &&
-      od > lendiff && _rl_last_c_pos < last_invisible)
+      _rl_term_cr && lendiff > prompt_visible_length && _rl_last_c_pos > 0 &&
+      od >= lendiff && _rl_last_c_pos <= prompt_last_invisible)
     {
 #if defined (__MSDOS__)
       putc ('\r', rl_outstream);
 #else
-      tputs (term_cr, 1, _rl_output_character_function);
+      tputs (_rl_term_cr, 1, _rl_output_character_function);
 #endif
       _rl_output_some_chars (local_prompt, lendiff);
       _rl_last_c_pos = lendiff;
@@ -974,14 +1019,14 @@ update_line (old, new, current_line, omax, nmax, inv_botlin)
 	 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 (terminal_can_insert && ((2 * temp) >= lendiff || term_IC) && (!_rl_term_autowrap || !gl))
+      if (_rl_terminal_can_insert && ((2 * temp) >= lendiff || _rl_term_IC) && (!_rl_term_autowrap || !gl))
 	{
-	  /* If lendiff > visible_length and _rl_last_c_pos == 0 and
+	  /* If lendiff > prompt_visible_length and _rl_last_c_pos == 0 and
 	     _rl_horizontal_scroll_mode == 1, inserting the characters with
-	     term_IC or term_ic will screw up the screen because of the
+	     _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 <= visible_length || !current_invis_chars))
+			lendiff <= prompt_visible_length || !current_invis_chars))
 	    {
 	      insert_some_chars (nfd, lendiff);
 	      _rl_last_c_pos += lendiff;
@@ -1022,7 +1067,7 @@ update_line (old, new, current_line, omax, nmax, inv_botlin)
   else				/* Delete characters from line. */
     {
       /* If possible and inexpensive to use terminal deletion, then do so. */
-      if (term_dc && (2 * temp) >= -lendiff)
+      if (_rl_term_dc && (2 * temp) >= -lendiff)
 	{
 	  /* If all we're doing is erasing the invisible characters in the
 	     prompt string, don't bother.  It screws up the assumptions
@@ -1107,7 +1152,7 @@ rl_on_new_line_with_prompt ()
   /* 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 = screenwidth + (_rl_term_autowrap ? 0 : 1);
+  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
@@ -1152,7 +1197,7 @@ rl_forced_update_display ()
 void
 _rl_move_cursor_relative (new, data)
      int new;
-     char *data;
+     const char *data;
 {
   register int i;
 
@@ -1164,12 +1209,12 @@ _rl_move_cursor_relative (new, data)
   /* i == current physical cursor position. */
   i = _rl_last_c_pos - W_OFFSET(_rl_last_v_pos, visible_wrap_offset);
   if (new == 0 || CR_FASTER (new, _rl_last_c_pos) ||
-      (_rl_term_autowrap && i == screenwidth))
+      (_rl_term_autowrap && i == _rl_screenwidth))
     {
 #if defined (__MSDOS__)
       putc ('\r', rl_outstream);
 #else
-      tputs (term_cr, 1, _rl_output_character_function);
+      tputs (_rl_term_cr, 1, _rl_output_character_function);
 #endif /* !__MSDOS__ */
       _rl_last_c_pos = 0;
     }
@@ -1186,9 +1231,9 @@ _rl_move_cursor_relative (new, data)
 	 That kind of control is for people who don't know what the
 	 data is underneath the cursor. */
 #if defined (HACK_TERMCAP_MOTION)
-      if (term_forward_char)
+      if (_rl_term_forward_char)
 	for (i = _rl_last_c_pos; i < new; i++)
-	  tputs (term_forward_char, 1, _rl_output_character_function);
+	  tputs (_rl_term_forward_char, 1, _rl_output_character_function);
       else
 	for (i = _rl_last_c_pos; i < new; i++)
 	  putc (data[i], rl_outstream);
@@ -1209,7 +1254,7 @@ _rl_move_vert (to)
 {
   register int delta, i;
 
-  if (_rl_last_v_pos == to || to > screenheight)
+  if (_rl_last_v_pos == to || to > _rl_screenheight)
     return;
 
   if ((delta = to - _rl_last_v_pos) > 0)
@@ -1219,15 +1264,15 @@ _rl_move_vert (to)
 #if defined (__MSDOS__)
       putc ('\r', rl_outstream);
 #else
-      tputs (term_cr, 1, _rl_output_character_function);
+      tputs (_rl_term_cr, 1, _rl_output_character_function);
 #endif
       _rl_last_c_pos = 0;
     }
   else
     {			/* delta < 0 */
-      if (term_up && *term_up)
+      if (_rl_term_up && *_rl_term_up)
 	for (i = 0; i < -delta; i++)
-	  tputs (term_up, 1, _rl_output_character_function);
+	  tputs (_rl_term_up, 1, _rl_output_character_function);
     }
 
   _rl_last_v_pos = to;		/* Now TO is here */
@@ -1361,25 +1406,23 @@ rl_save_prompt ()
 {
   saved_local_prompt = local_prompt;
   saved_local_prefix = local_prompt_prefix;
-  saved_last_invisible = last_invisible;
-  saved_visible_length = visible_length;
+  saved_last_invisible = prompt_last_invisible;
+  saved_visible_length = prompt_visible_length;
 
   local_prompt = local_prompt_prefix = (char *)0;
-  last_invisible = visible_length = 0;
+  prompt_last_invisible = prompt_visible_length = 0;
 }
 
 void
 rl_restore_prompt ()
 {
-  if (local_prompt)
-    free (local_prompt);
-  if (local_prompt_prefix)
-    free (local_prompt_prefix);
+  FREE (local_prompt);
+  FREE (local_prompt_prefix);
 
   local_prompt = saved_local_prompt;
   local_prompt_prefix = saved_local_prefix;
-  last_invisible = saved_last_invisible;
-  visible_length = saved_visible_length;
+  prompt_last_invisible = saved_last_invisible;
+  prompt_visible_length = saved_visible_length;
 }
 
 char *
@@ -1409,8 +1452,8 @@ _rl_make_prompt_for_search (pchar)
       pmt[len] = pchar;
       pmt[len+1] = '\0';
       local_prompt = savestring (pmt);
-      last_invisible = saved_last_invisible;
-      visible_length = saved_visible_length + 1;
+      prompt_last_invisible = saved_last_invisible;
+      prompt_visible_length = saved_visible_length + 1;
     }
   return pmt;
 }
@@ -1437,8 +1480,8 @@ void
 _rl_clear_to_eol (count)
      int count;
 {
-  if (term_clreol)
-    tputs (term_clreol, 1, _rl_output_character_function);
+  if (_rl_term_clreol)
+    tputs (_rl_term_clreol, 1, _rl_output_character_function);
   else if (count)
     space_to_eol (count);
 }
@@ -1460,10 +1503,10 @@ space_to_eol (count)
 void
 _rl_clear_screen ()
 {
-  if (term_clrpag)
-    tputs (term_clrpag, 1, _rl_output_character_function);
+  if (_rl_term_clrpag)
+    tputs (_rl_term_clrpag, 1, _rl_output_character_function);
   else
-    crlf ();
+    rl_crlf ();
 }
 
 /* Insert COUNT characters from STRING to the output stream. */
@@ -1473,10 +1516,10 @@ insert_some_chars (string, count)
      int count;
 {
   /* If IC is defined, then we do not have to "enter" insert mode. */
-  if (term_IC)
+  if (_rl_term_IC)
     {
       char *buffer;
-      buffer = tgoto (term_IC, 0, count);
+      buffer = tgoto (_rl_term_IC, 0, count);
       tputs (buffer, 1, _rl_output_character_function);
       _rl_output_some_chars (string, count);
     }
@@ -1485,15 +1528,15 @@ insert_some_chars (string, count)
       register int i;
 
       /* If we have to turn on insert-mode, then do so. */
-      if (term_im && *term_im)
-	tputs (term_im, 1, _rl_output_character_function);
+      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 (term_ic && *term_ic)
+      if (_rl_term_ic && *_rl_term_ic)
 	{
 	  for (i = count; i--; )
-	    tputs (term_ic, 1, _rl_output_character_function);
+	    tputs (_rl_term_ic, 1, _rl_output_character_function);
 	}
 
       /* Print the text. */
@@ -1501,8 +1544,8 @@ insert_some_chars (string, count)
 
       /* If there is a string to turn off insert mode, we had best use
 	 it now. */
-      if (term_ei && *term_ei)
-	tputs (term_ei, 1, _rl_output_character_function);
+      if (_rl_term_ei && *_rl_term_ei)
+	tputs (_rl_term_ei, 1, _rl_output_character_function);
     }
 }
 
@@ -1511,20 +1554,20 @@ static void
 delete_chars (count)
      int count;
 {
-  if (count > screenwidth)	/* XXX */
+  if (count > _rl_screenwidth)	/* XXX */
     return;
 
-  if (term_DC && *term_DC)
+  if (_rl_term_DC && *_rl_term_DC)
     {
       char *buffer;
-      buffer = tgoto (term_DC, count, count);
+      buffer = tgoto (_rl_term_DC, count, count);
       tputs (buffer, count, _rl_output_character_function);
     }
   else
     {
-      if (term_dc && *term_dc)
+      if (_rl_term_dc && *_rl_term_dc)
 	while (count--)
-	  tputs (term_dc, 1, _rl_output_character_function);
+	  tputs (_rl_term_dc, 1, _rl_output_character_function);
     }
 }
 
@@ -1544,7 +1587,7 @@ _rl_update_final ()
     }
   _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) == screenwidth))
+  if (full_lines && _rl_term_autowrap && (VIS_LLEN(_rl_vis_botlin) == _rl_screenwidth))
     {
       char *last_line;
 #if 0
@@ -1552,12 +1595,12 @@ _rl_update_final ()
 #else
       last_line = &visible_line[vis_lbreaks[_rl_vis_botlin]];
 #endif
-      _rl_move_cursor_relative (screenwidth - 1, last_line);
+      _rl_move_cursor_relative (_rl_screenwidth - 1, last_line);
       _rl_clear_to_eol (0);
-      putc (last_line[screenwidth - 1], rl_outstream);
+      putc (last_line[_rl_screenwidth - 1], rl_outstream);
     }
   _rl_vis_botlin = 0;
-  crlf ();
+  rl_crlf ();
   fflush (rl_outstream);
   rl_display_fixed++;
 }
@@ -1566,12 +1609,12 @@ _rl_update_final ()
 static void
 cr ()
 {
-  if (term_cr)
+  if (_rl_term_cr)
     {
 #if defined (__MSDOS__)
       putc ('\r', rl_outstream);
 #else
-      tputs (term_cr, 1, _rl_output_character_function);
+      tputs (_rl_term_cr, 1, _rl_output_character_function);
 #endif
       _rl_last_c_pos = 0;
     }
@@ -1585,27 +1628,31 @@ redraw_prompt (t)
      char *t;
 {
   char *oldp, *oldl, *oldlprefix;
-  int oldlen, oldlast, oldplen;
+  int oldlen, oldlast, oldplen, oldninvis;
 
   /* Geez, I should make this a struct. */
   oldp = rl_display_prompt;
   oldl = local_prompt;
   oldlprefix = local_prompt_prefix;
-  oldlen = visible_length;
-  oldplen = prefix_length;
-  oldlast = last_invisible;
+  oldlen = prompt_visible_length;
+  oldplen = prompt_prefix_length;
+  oldlast = prompt_last_invisible;
+  oldninvis = prompt_invis_chars_first_line;
 
   rl_display_prompt = t;
-  local_prompt = expand_prompt (t, &visible_length, &last_invisible);
+  local_prompt = expand_prompt (t, &prompt_visible_length,
+				   &prompt_last_invisible,
+				   &prompt_invis_chars_first_line);
   local_prompt_prefix = (char *)NULL;
   rl_forced_update_display ();
 
   rl_display_prompt = oldp;
   local_prompt = oldl;
   local_prompt_prefix = oldlprefix;
-  visible_length = oldlen;
-  prefix_length = oldplen;
-  last_invisible = oldlast;
+  prompt_visible_length = oldlen;
+  prompt_prefix_length = oldplen;
+  prompt_last_invisible = oldlast;
+  prompt_invis_chars_first_line = oldninvis;
 }
       
 /* Redisplay the current line after a SIGWINCH is received. */
@@ -1616,31 +1663,31 @@ _rl_redisplay_after_sigwinch ()
 
   /* 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 (term_cr)
+  if (_rl_term_cr)
     {
 #if defined (__MSDOS__)
       putc ('\r', rl_outstream);
 #else
-      tputs (term_cr, 1, _rl_output_character_function);
+      tputs (_rl_term_cr, 1, _rl_output_character_function);
 #endif
       _rl_last_c_pos = 0;
 #if defined (__MSDOS__)
-      space_to_eol (screenwidth);
+      space_to_eol (_rl_screenwidth);
       putc ('\r', rl_outstream);
 #else
-      if (term_clreol)
-	tputs (term_clreol, 1, _rl_output_character_function);
+      if (_rl_term_clreol)
+	tputs (_rl_term_clreol, 1, _rl_output_character_function);
       else
 	{
-	  space_to_eol (screenwidth);
-	  tputs (term_cr, 1, _rl_output_character_function);
+	  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
-    crlf ();
+    rl_crlf ();
 
   /* Redraw only the last line of a multi-line prompt. */
   t = strrchr (rl_display_prompt, '\n');
@@ -1681,12 +1728,12 @@ _rl_current_display_line ()
   /* 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 - screenwidth - rl_visible_prompt_length;
+    nleft = _rl_last_c_pos - _rl_screenwidth - rl_visible_prompt_length;
   else
-    nleft = _rl_last_c_pos - screenwidth;
+    nleft = _rl_last_c_pos - _rl_screenwidth;
 
   if (nleft > 0)
-    ret = 1 + nleft / screenwidth;
+    ret = 1 + nleft / _rl_screenwidth;
   else
     ret = 0;
 
diff --git a/contrib/libreadline/doc/readline.3 b/contrib/libreadline/doc/readline.3
index dce095f..a3373ac 100644
--- a/contrib/libreadline/doc/readline.3
+++ b/contrib/libreadline/doc/readline.3
@@ -7,9 +7,9 @@
 .\"	Case Western Reserve University
 .\"	chet@ins.CWRU.Edu
 .\"
-.\"	Last Change: Tue Jun  1 13:28:03 EDT 1999
+.\"	Last Change: Mon Mar  5 09:58:38 EST 2001
 .\"
-.TH READLINE 3 "1999 Jun 1" GNU
+.TH READLINE 3 "2001 Mar 5" "GNU Readline 4.2"
 .\"
 .\" File Name macro.  This used to be `.PN', for Path Name,
 .\" but Sun doesn't seem to like that very much.
@@ -30,14 +30,13 @@ readline \- get a line from a user with editing
 .fi
 .LP
 .nf
-.ft B
-char *readline (prompt)
-char *prompt;
-.ft
+\fIchar *\fP
+.br
+\fBreadline\fP (\fIconst char *prompt\fP);
 .fi
 .SH COPYRIGHT
-.if n Readline is Copyright (C) 1989, 1991, 1993, 1995, 1996 by the Free Software Foundation, Inc.
-.if t Readline is Copyright \(co 1989, 1991, 1993, 1995, 1996 by the Free Software Foundation, Inc.
+.if n Readline is Copyright (C) 1989\-2001 by the Free Software Foundation, Inc.
+.if t Readline is Copyright \(co 1989\-2001 by the Free Software Foundation, Inc.
 .SH DESCRIPTION
 .LP
 .B readline
@@ -46,9 +45,10 @@ and return it, using
 .B prompt
 as a prompt.  If 
 .B prompt
-is null, no prompt is issued.  The line returned is allocated with
-.IR malloc (3),
-so the caller must free it when finished.  The line returned
+is \fBNULL\fP or the empty string, no prompt is issued.
+The line returned is allocated with
+.IR malloc (3);
+the caller must free it when finished.  The line returned
 has the final newline removed, so only the text of the line
 remains.
 .LP
@@ -58,6 +58,11 @@ line.
 By default, the line editing commands
 are similar to those of emacs.
 A vi\-style line editing interface is also available.
+.LP
+This manual page describes only the most basic use of \fBreadline\fP.
+Much more functionality is available; see
+\fIThe GNU Readline Library\fP and \fIThe GNU History Library\fP
+for additional information.
 .SH RETURN VALUE
 .LP
 .B readline
@@ -131,6 +136,7 @@ or
 .RS
 C\-Meta\-u: universal\-argument
 .RE
+.sp
 into the 
 .I inputrc
 would make M\-C\-u execute the readline command
@@ -138,15 +144,16 @@ would make M\-C\-u execute the readline command
 .PP
 The following symbolic character names are recognized while
 processing key bindings:
-.IR RUBOUT ,
 .IR DEL ,
 .IR ESC ,
+.IR ESCAPE ,
 .IR LFD ,
 .IR NEWLINE ,
 .IR RET ,
 .IR RETURN ,
-.IR SPC ,
+.IR RUBOUT ,
 .IR SPACE ,
+.IR SPC ,
 and
 .IR TAB .
 .PP
@@ -162,6 +169,7 @@ command or the text of a macro and a key sequence to which
 it should be bound. The name may be specified in one of two ways:
 as a symbolic key name, possibly with \fIMeta\-\fP or \fIControl\-\fP
 prefixes, or as a key sequence.
+.PP
 When using the form \fBkeyname\fP:\^\fIfunction-name\fP or \fImacro\fP,
 .I keyname
 is the name of a key spelled out in English.  For example:
@@ -171,7 +179,7 @@ Control\-u: universal\-argument
 .br
 Meta\-Rubout: backward\-kill\-word
 .br
-Control\-o: ">&output"
+Control\-o: "> output"
 .RE
 .LP
 In the above example,
@@ -185,7 +193,8 @@ and
 .I C\-o
 is bound to run the macro
 expressed on the right hand side (that is, to insert the text
-.I >&output
+.if t \f(CW> output\fP
+.if n ``> output''
 into the line).
 .PP
 In the second form, \fB"keyseq"\fP:\^\fIfunction\-name\fP or \fImacro\fP,
@@ -195,7 +204,8 @@ differs from
 above in that strings denoting
 an entire key sequence may be specified by placing the sequence
 within double quotes.  Some GNU Emacs style key escapes can be
-used, as in the following example.
+used, as in the following example, but the symbolic character names
+are not recognized.
 .sp
 .RS
 "\eC\-u": universal\-argument
@@ -215,8 +225,11 @@ is bound to the function
 and 
 .I "ESC [ 1 1 ~"
 is bound to insert the text
-.BR "Function Key 1" .
-The full set of GNU Emacs style escape sequences is
+.if t \f(CWFunction Key 1\fP.
+.if n ``Function Key 1''.
+.PP
+The full set of GNU Emacs style escape sequences available when specifying
+key sequences is
 .RS
 .PD 0
 .TP
@@ -233,10 +246,10 @@ an escape character
 backslash
 .TP
 .B \e"
-literal "
+literal ", a double quote
 .TP
 .B \e'
-literal '
+literal ', a single quote
 .RE
 .PD
 .PP
@@ -314,7 +327,8 @@ file with a statement of the form
 Except where noted, readline variables can take the values
 .B On
 or
-.BR Off .
+.B Off
+(without regard to case).
 The variables and their default values are:
 .PP
 .PD 0
@@ -352,7 +366,7 @@ on the terminal.
 .B convert\-meta (On)
 If set to \fBOn\fP, readline will convert characters with the
 eighth bit set to an ASCII key sequence
-by stripping the eighth bit and prepending an
+by stripping the eighth bit and prefixing it with an
 escape character (in effect, using escape as the \fImeta prefix\fP).
 .TP
 .B disable\-completion (Off)
@@ -362,7 +376,7 @@ mapped to \fBself-insert\fP.
 .TP
 .B editing\-mode (emacs)
 Controls whether readline begins with a set of key bindings similar
-to \fIemacs\fP or \fIvi\fP.
+to emacs or vi.
 .B editing\-mode
 can be set to either
 .B emacs
@@ -385,12 +399,12 @@ becomes longer than the screen width rather than wrapping to a new line.
 .TP
 .B input\-meta (Off)
 If set to \fBOn\fP, readline will enable eight-bit input (that is,
-it will not strip the high bit from the characters it reads),
+it will not clear the eighth bit in the characters it reads),
 regardless of what the terminal claims it can support.  The name
 .B meta\-flag
 is a synonym for this variable.
 .TP
-.B isearch\-terminators (``C\-[C\-J'')
+.B isearch\-terminators (``C\-[ C\-J'')
 The string of characters that should terminate an incremental
 search without subsequently executing the character as a command.
 If this variable has not been given a value, the characters
@@ -403,13 +417,13 @@ vi-command\fP, and
 .IR vi-insert .
 \fIvi\fP is equivalent to \fIvi-command\fP; \fIemacs\fP is
 equivalent to \fIemacs-standard\fP.  The default value is
-.IR emacs ;
-the value of
+.IR emacs .
+The value of
 .B editing\-mode
 also affects the default keymap.
 .TP
 .B mark\-directories (On)
-If set to \fBOn\fP, complete<d directory names have a slash
+If set to \fBOn\fP, completed directory names have a slash
 appended.
 .TP
 .B mark\-modified\-lines (Off)
@@ -434,7 +448,7 @@ matches to be listed immediately instead of ringing the bell.
 .TP
 .B visible\-stats (Off)
 If set to \fBOn\fP, a character denoting a file's type as reported  
-by \fBstat\fP(2) is appended to the filename when listing possible
+by \fIstat\fP(2) is appended to the filename when listing possible
 completions.
 .PD
 .SS Conditional Constructs
@@ -482,7 +496,7 @@ key sequence that quotes the current or previous word in Bash:
 .sp 1
 .RS
 .nf
-\fB$if\fP bash
+\fB$if\fP Bash
 # Quote the current or previous word
 "\eC-xq": "\eeb\e"\eef\e""
 \fB$endif\fP
@@ -520,22 +534,27 @@ As each character of the search string is typed, readline displays
 the next entry from the history matching the string typed so far.
 An incremental search requires only as many characters as needed to
 find the desired history entry.
-The characters present in the value of the \fIisearch-terminators\fP
+To search backward in the history for a particular string, type
+\fBC\-r\fP.  Typing \fBC\-s\fP searches forward through the history.
+The characters present in the value of the \fBisearch-terminators\fP
 variable are used to terminate an incremental search.
-If that variable has not been assigned a value the Escape and
-Control-J characters will terminate an incremental search.
-Control-G will abort an incremental search and restore the original
+If that variable has not been assigned a value the \fIEscape\fP and
+\fBC\-J\fP characters will terminate an incremental search.
+\fBC\-G\fP will abort an incremental search and restore the original
 line.
 When the search is terminated, the history entry containing the
 search string becomes the current line.
-To find other matching entries in the history list, type Control-S or
-Control-R as appropriate.
+.PP
+To find other matching entries in the history list, type \fBC\-s\fP or
+\fBC\-r\fP as appropriate.
 This will search backward or forward in the history for the next
 line matching the search string typed so far.
 Any other key sequence bound to a readline command will terminate
 the search and execute that command.
-For instance, a \fInewline\fP will terminate the search and accept
+For instance, a newline will terminate the search and accept
 the line, thereby executing the command from the history list.
+A movement command will terminate the search, make the last line found
+the current line, and begin editing.
 .PP
 Non-incremental searches read the entire search string before starting
 to search for matching history lines.  The search string may be
@@ -545,6 +564,11 @@ typed by the user or be part of the contents of the current line.
 The following is a list of the names of the commands and the default
 key sequences to which they are bound.
 Command names without an accompanying key sequence are unbound by default.
+.PP
+In the following descriptions, \fIpoint\fP refers to the current cursor
+position, and \fImark\fP refers to a cursor position saved by the
+\fBset\-mark\fP command.
+The text between the point and mark is referred to as the \fIregion\fP.
 .SS Commands for Moving
 .PP
 .PD 0
@@ -582,9 +606,11 @@ Refresh the current line.
 .PD 0
 .TP
 .B accept\-line (Newline, Return)
-Accept the line regardless of where the cursor is.  If this line is
-non-empty, add it to the history list. If the line is a modified
-history line, then restore the history line to its original state.
+Accept the line regardless of where the cursor is.
+If this line is
+non-empty, it may be added to the history list for future recall with
+\fBadd_history()\fP.
+If the line is a modified history line, the history line is restored to its original state.
 .TP
 .B previous\-history (C\-p)
 Fetch the previous command from the history list, moving back in
@@ -630,8 +656,8 @@ This is a non-incremental search.
 .TP
 .B yank\-nth\-arg (M\-C\-y)
 Insert the first argument to the previous command (usually
-the second word on the previous line) at point (the current
-cursor position).  With an argument
+the second word on the previous line) at point.
+With an argument
 .IR n ,
 insert the \fIn\fPth word from the previous command (the words
 in the previous command begin with word 0).  A negative argument
@@ -650,9 +676,9 @@ list, inserting the last argument of each line in turn.
 .PD 0
 .TP
 .B delete\-char (C\-d)
-Delete the character under the cursor.  If point is at the
+Delete the character at point.  If point is at the
 beginning of the line, there are no characters in the line, and
-the last character typed was not bound to \fBBdelete\-char\fP, then return
+the last character typed was not bound to \fBdelete\-char\fP, then return
 .SM
 .BR EOF .
 .TP
@@ -663,7 +689,7 @@ save the deleted text on the kill ring.
 .B forward\-backward\-delete\-char   
 Delete the character under the cursor, unless the cursor is at the
 end of the line, in which case the character behind the cursor is
-deleted.  By default, this is not bound to a key.
+deleted.
 .TP
 .B quoted\-insert (C\-q, C\-v)
 Add the next character that you type to the line verbatim.  This is
@@ -676,13 +702,15 @@ Insert a tab character.
 Insert the character typed.
 .TP
 .B transpose\-chars (C\-t)
-Drag the character before point forward over the character at point.
-Point moves forward as well.  If point is at the end of the line, then
-transpose the two characters before point.  Negative arguments don't work.
+Drag the character before point forward over the character at point,
+moving point forward as well.
+If point is at the end of the line, then this transposes
+the two characters before point.
+Negative arguments have no effect.
 .TP
 .B transpose\-words (M\-t)
-Drag the word behind the cursor past the word in front of the cursor
-moving the cursor over that word as well.
+Drag the word before point past the word after point,
+moving point over that word as well.
 .TP
 .B upcase\-word (M\-u)
 Uppercase the current (or following) word.  With a negative argument,
@@ -701,7 +729,7 @@ capitalize the previous word, but do not move point.
 .PD 0
 .TP
 .B kill\-line (C\-k)
-Kill the text from the current cursor position to the end of the line.
+Kill the text from point to the end of the line.
 .TP
 .B backward\-kill\-line (C\-x Rubout)
 Kill backward to the beginning of the line.
@@ -712,22 +740,20 @@ The killed text is saved on the kill-ring.
 .\" There is no real difference between this and backward-kill-line
 .TP
 .B kill\-whole\-line
-Kill all characters on the current line, no matter where the
-cursor is.
+Kill all characters on the current line, no matter where point is.
 .TP
 .B kill\-word  (M\-d)
-Kill from the cursor to the end of the current word, or if between
+Kill from point the end of the current word, or if between
 words, to the end of the next word.  Word boundaries are the same as
 those used by \fBforward\-word\fP.
 .TP
 .B backward\-kill\-word (M\-Rubout)
-Kill the word behind the cursor.  Word boundaries are the same as
-those used by \fBbackward\-word\fP.
+Kill the word behind point.
+Word boundaries are the same as those used by \fBbackward\-word\fP.
 .TP
 .B unix\-word\-rubout (C\-w)
-Kill the word behind the cursor, using white space as a word boundary.
-The word boundaries are different from
-.BR backward\-kill\-word .
+Kill the word behind point, using white space as a word boundary.
+The killed text is saved on the kill-ring.
 .TP
 .B delete\-horizontal\-space (M\-\e)
 Delete all spaces and tabs around point.
@@ -748,7 +774,7 @@ Copy the word following point to the kill buffer.
 The word boundaries are the same as \fBforward\-word\fP.
 .TP
 .B yank (C\-y)
-Yank the top of the kill ring into the buffer at the cursor.
+Yank the top of the kill ring into the buffer at point.
 .TP
 .B yank\-pop (M\-y)
 Rotate the kill ring, and yank the new top.  Only works following
@@ -809,8 +835,9 @@ Similar to \fBcomplete\fP, but replaces the word to be completed
 with a single match from the list of possible completions.
 Repeated execution of \fBmenu\-complete\fP steps through the list
 of possible completions, inserting each match in turn.
-At the end of the list of completions, the bell is rung and the
-original text is restored.
+At the end of the list of completions, the bell is rung
+(subject to the setting of \Bbell\-style\fP)
+and the original text is restored.
 An argument of \fIn\fP moves \fIn\fP positions forward in the list
 of matches; a negative argument may be used to move backward 
 through the list.
@@ -822,7 +849,6 @@ Deletes the character under the cursor if not at the beginning or
 end of the line (like \fBdelete-char\fP).
 If at the end of the line, behaves identically to
 \fBpossible-completions\fP.
-This command is unbound by default.
 .PD
 .SS Keyboard Macros
 .PP
@@ -875,8 +901,8 @@ command enough times to return the line to its initial state.
 .B tilde\-expand (M\-&)
 Perform tilde expansion on the current word.
 .TP
-.B set\-mark (C\-@, M-<space>)
-Set the mark to the current point.  If a
+.B set\-mark (C\-@, M\-<space>)
+Set the mark to the point.  If a
 numeric argument is supplied, the mark is set to that position.
 .TP
 .B exchange\-point\-and\-mark (C\-x C\-x)
@@ -895,8 +921,9 @@ character.  A negative count searches for subsequent occurrences.
 The value of the readline
 .B comment\-begin
 variable is inserted at the beginning of the current line, and the line
-is accepted as if a newline had been typed.  This makes the current line
-a shell comment.
+is accepted as if a newline had been typed.  The default value of
+.B comment\-begin
+makes the current line a shell comment.
 .TP
 .B dump\-functions
 Print all of the functions and their key bindings to the
@@ -933,25 +960,23 @@ editing mode.
 .SH DEFAULT KEY BINDINGS
 .LP
 The following is a list of the default emacs and vi bindings.
-Characters with the 8th bit set are written as M\-<character>, and
+Characters with the eighth bit set are written as M\-<character>, and
 are referred to as
 .I metafied
 characters.
 The printable ASCII characters not mentioned in the list of emacs
 standard bindings are bound to the
-.I self\-insert
+.B self\-insert
 function, which just inserts the given character into the input line.
 In vi insertion mode, all characters not specifically mentioned are
 bound to
-.IR self\-insert .
+.BR self\-insert .
 Characters assigned to signal generation by
 .IR stty (1)
 or the terminal driver, such as C-Z or C-C,
 retain that function.
-Upper and lower case
-.I metafied
-characters are bound to the same function in the emacs mode
-meta keymap.
+Upper and lower case metafied characters are bound to the same function in
+the emacs mode meta keymap.
 The remaining characters are unbound, which causes readline
 to ring the bell (subject to the setting of the
 .B bell\-style
@@ -1037,7 +1062,7 @@ Emacs Meta bindings
 "M-Y"  yank-pop
 "M-\e"  delete-horizontal-space
 "M-~"  tilde-expand
-"M-C-?"  backward-delete-word
+"M-C-?"  backward-kill-word
 "M-_"  yank-last-arg
 .PP
 Emacs Control-X bindings
@@ -1097,6 +1122,7 @@ VI Command Mode functions
 "C-V"  quoted-insert
 "C-W"  unix-word-rubout
 "C-Y"  yank
+"C-_"  vi-undo
 "\^ "  forward-char
 "#"  insert-comment
 "$"  end-of-line
@@ -1151,7 +1177,7 @@ VI Command Mode functions
 "r"  vi-change-char
 "s"  vi-subst
 "t"  vi-char-search
-"u"  undo
+"u"  vi-undo
 "w"  vi-next-word
 "x"  vi-delete
 "y"  vi-yank-to
diff --git a/contrib/libreadline/readline.3 b/contrib/libreadline/readline.3
index dce095f..a3373ac 100644
--- a/contrib/libreadline/readline.3
+++ b/contrib/libreadline/readline.3
@@ -7,9 +7,9 @@
 .\"	Case Western Reserve University
 .\"	chet@ins.CWRU.Edu
 .\"
-.\"	Last Change: Tue Jun  1 13:28:03 EDT 1999
+.\"	Last Change: Mon Mar  5 09:58:38 EST 2001
 .\"
-.TH READLINE 3 "1999 Jun 1" GNU
+.TH READLINE 3 "2001 Mar 5" "GNU Readline 4.2"
 .\"
 .\" File Name macro.  This used to be `.PN', for Path Name,
 .\" but Sun doesn't seem to like that very much.
@@ -30,14 +30,13 @@ readline \- get a line from a user with editing
 .fi
 .LP
 .nf
-.ft B
-char *readline (prompt)
-char *prompt;
-.ft
+\fIchar *\fP
+.br
+\fBreadline\fP (\fIconst char *prompt\fP);
 .fi
 .SH COPYRIGHT
-.if n Readline is Copyright (C) 1989, 1991, 1993, 1995, 1996 by the Free Software Foundation, Inc.
-.if t Readline is Copyright \(co 1989, 1991, 1993, 1995, 1996 by the Free Software Foundation, Inc.
+.if n Readline is Copyright (C) 1989\-2001 by the Free Software Foundation, Inc.
+.if t Readline is Copyright \(co 1989\-2001 by the Free Software Foundation, Inc.
 .SH DESCRIPTION
 .LP
 .B readline
@@ -46,9 +45,10 @@ and return it, using
 .B prompt
 as a prompt.  If 
 .B prompt
-is null, no prompt is issued.  The line returned is allocated with
-.IR malloc (3),
-so the caller must free it when finished.  The line returned
+is \fBNULL\fP or the empty string, no prompt is issued.
+The line returned is allocated with
+.IR malloc (3);
+the caller must free it when finished.  The line returned
 has the final newline removed, so only the text of the line
 remains.
 .LP
@@ -58,6 +58,11 @@ line.
 By default, the line editing commands
 are similar to those of emacs.
 A vi\-style line editing interface is also available.
+.LP
+This manual page describes only the most basic use of \fBreadline\fP.
+Much more functionality is available; see
+\fIThe GNU Readline Library\fP and \fIThe GNU History Library\fP
+for additional information.
 .SH RETURN VALUE
 .LP
 .B readline
@@ -131,6 +136,7 @@ or
 .RS
 C\-Meta\-u: universal\-argument
 .RE
+.sp
 into the 
 .I inputrc
 would make M\-C\-u execute the readline command
@@ -138,15 +144,16 @@ would make M\-C\-u execute the readline command
 .PP
 The following symbolic character names are recognized while
 processing key bindings:
-.IR RUBOUT ,
 .IR DEL ,
 .IR ESC ,
+.IR ESCAPE ,
 .IR LFD ,
 .IR NEWLINE ,
 .IR RET ,
 .IR RETURN ,
-.IR SPC ,
+.IR RUBOUT ,
 .IR SPACE ,
+.IR SPC ,
 and
 .IR TAB .
 .PP
@@ -162,6 +169,7 @@ command or the text of a macro and a key sequence to which
 it should be bound. The name may be specified in one of two ways:
 as a symbolic key name, possibly with \fIMeta\-\fP or \fIControl\-\fP
 prefixes, or as a key sequence.
+.PP
 When using the form \fBkeyname\fP:\^\fIfunction-name\fP or \fImacro\fP,
 .I keyname
 is the name of a key spelled out in English.  For example:
@@ -171,7 +179,7 @@ Control\-u: universal\-argument
 .br
 Meta\-Rubout: backward\-kill\-word
 .br
-Control\-o: ">&output"
+Control\-o: "> output"
 .RE
 .LP
 In the above example,
@@ -185,7 +193,8 @@ and
 .I C\-o
 is bound to run the macro
 expressed on the right hand side (that is, to insert the text
-.I >&output
+.if t \f(CW> output\fP
+.if n ``> output''
 into the line).
 .PP
 In the second form, \fB"keyseq"\fP:\^\fIfunction\-name\fP or \fImacro\fP,
@@ -195,7 +204,8 @@ differs from
 above in that strings denoting
 an entire key sequence may be specified by placing the sequence
 within double quotes.  Some GNU Emacs style key escapes can be
-used, as in the following example.
+used, as in the following example, but the symbolic character names
+are not recognized.
 .sp
 .RS
 "\eC\-u": universal\-argument
@@ -215,8 +225,11 @@ is bound to the function
 and 
 .I "ESC [ 1 1 ~"
 is bound to insert the text
-.BR "Function Key 1" .
-The full set of GNU Emacs style escape sequences is
+.if t \f(CWFunction Key 1\fP.
+.if n ``Function Key 1''.
+.PP
+The full set of GNU Emacs style escape sequences available when specifying
+key sequences is
 .RS
 .PD 0
 .TP
@@ -233,10 +246,10 @@ an escape character
 backslash
 .TP
 .B \e"
-literal "
+literal ", a double quote
 .TP
 .B \e'
-literal '
+literal ', a single quote
 .RE
 .PD
 .PP
@@ -314,7 +327,8 @@ file with a statement of the form
 Except where noted, readline variables can take the values
 .B On
 or
-.BR Off .
+.B Off
+(without regard to case).
 The variables and their default values are:
 .PP
 .PD 0
@@ -352,7 +366,7 @@ on the terminal.
 .B convert\-meta (On)
 If set to \fBOn\fP, readline will convert characters with the
 eighth bit set to an ASCII key sequence
-by stripping the eighth bit and prepending an
+by stripping the eighth bit and prefixing it with an
 escape character (in effect, using escape as the \fImeta prefix\fP).
 .TP
 .B disable\-completion (Off)
@@ -362,7 +376,7 @@ mapped to \fBself-insert\fP.
 .TP
 .B editing\-mode (emacs)
 Controls whether readline begins with a set of key bindings similar
-to \fIemacs\fP or \fIvi\fP.
+to emacs or vi.
 .B editing\-mode
 can be set to either
 .B emacs
@@ -385,12 +399,12 @@ becomes longer than the screen width rather than wrapping to a new line.
 .TP
 .B input\-meta (Off)
 If set to \fBOn\fP, readline will enable eight-bit input (that is,
-it will not strip the high bit from the characters it reads),
+it will not clear the eighth bit in the characters it reads),
 regardless of what the terminal claims it can support.  The name
 .B meta\-flag
 is a synonym for this variable.
 .TP
-.B isearch\-terminators (``C\-[C\-J'')
+.B isearch\-terminators (``C\-[ C\-J'')
 The string of characters that should terminate an incremental
 search without subsequently executing the character as a command.
 If this variable has not been given a value, the characters
@@ -403,13 +417,13 @@ vi-command\fP, and
 .IR vi-insert .
 \fIvi\fP is equivalent to \fIvi-command\fP; \fIemacs\fP is
 equivalent to \fIemacs-standard\fP.  The default value is
-.IR emacs ;
-the value of
+.IR emacs .
+The value of
 .B editing\-mode
 also affects the default keymap.
 .TP
 .B mark\-directories (On)
-If set to \fBOn\fP, complete<d directory names have a slash
+If set to \fBOn\fP, completed directory names have a slash
 appended.
 .TP
 .B mark\-modified\-lines (Off)
@@ -434,7 +448,7 @@ matches to be listed immediately instead of ringing the bell.
 .TP
 .B visible\-stats (Off)
 If set to \fBOn\fP, a character denoting a file's type as reported  
-by \fBstat\fP(2) is appended to the filename when listing possible
+by \fIstat\fP(2) is appended to the filename when listing possible
 completions.
 .PD
 .SS Conditional Constructs
@@ -482,7 +496,7 @@ key sequence that quotes the current or previous word in Bash:
 .sp 1
 .RS
 .nf
-\fB$if\fP bash
+\fB$if\fP Bash
 # Quote the current or previous word
 "\eC-xq": "\eeb\e"\eef\e""
 \fB$endif\fP
@@ -520,22 +534,27 @@ As each character of the search string is typed, readline displays
 the next entry from the history matching the string typed so far.
 An incremental search requires only as many characters as needed to
 find the desired history entry.
-The characters present in the value of the \fIisearch-terminators\fP
+To search backward in the history for a particular string, type
+\fBC\-r\fP.  Typing \fBC\-s\fP searches forward through the history.
+The characters present in the value of the \fBisearch-terminators\fP
 variable are used to terminate an incremental search.
-If that variable has not been assigned a value the Escape and
-Control-J characters will terminate an incremental search.
-Control-G will abort an incremental search and restore the original
+If that variable has not been assigned a value the \fIEscape\fP and
+\fBC\-J\fP characters will terminate an incremental search.
+\fBC\-G\fP will abort an incremental search and restore the original
 line.
 When the search is terminated, the history entry containing the
 search string becomes the current line.
-To find other matching entries in the history list, type Control-S or
-Control-R as appropriate.
+.PP
+To find other matching entries in the history list, type \fBC\-s\fP or
+\fBC\-r\fP as appropriate.
 This will search backward or forward in the history for the next
 line matching the search string typed so far.
 Any other key sequence bound to a readline command will terminate
 the search and execute that command.
-For instance, a \fInewline\fP will terminate the search and accept
+For instance, a newline will terminate the search and accept
 the line, thereby executing the command from the history list.
+A movement command will terminate the search, make the last line found
+the current line, and begin editing.
 .PP
 Non-incremental searches read the entire search string before starting
 to search for matching history lines.  The search string may be
@@ -545,6 +564,11 @@ typed by the user or be part of the contents of the current line.
 The following is a list of the names of the commands and the default
 key sequences to which they are bound.
 Command names without an accompanying key sequence are unbound by default.
+.PP
+In the following descriptions, \fIpoint\fP refers to the current cursor
+position, and \fImark\fP refers to a cursor position saved by the
+\fBset\-mark\fP command.
+The text between the point and mark is referred to as the \fIregion\fP.
 .SS Commands for Moving
 .PP
 .PD 0
@@ -582,9 +606,11 @@ Refresh the current line.
 .PD 0
 .TP
 .B accept\-line (Newline, Return)
-Accept the line regardless of where the cursor is.  If this line is
-non-empty, add it to the history list. If the line is a modified
-history line, then restore the history line to its original state.
+Accept the line regardless of where the cursor is.
+If this line is
+non-empty, it may be added to the history list for future recall with
+\fBadd_history()\fP.
+If the line is a modified history line, the history line is restored to its original state.
 .TP
 .B previous\-history (C\-p)
 Fetch the previous command from the history list, moving back in
@@ -630,8 +656,8 @@ This is a non-incremental search.
 .TP
 .B yank\-nth\-arg (M\-C\-y)
 Insert the first argument to the previous command (usually
-the second word on the previous line) at point (the current
-cursor position).  With an argument
+the second word on the previous line) at point.
+With an argument
 .IR n ,
 insert the \fIn\fPth word from the previous command (the words
 in the previous command begin with word 0).  A negative argument
@@ -650,9 +676,9 @@ list, inserting the last argument of each line in turn.
 .PD 0
 .TP
 .B delete\-char (C\-d)
-Delete the character under the cursor.  If point is at the
+Delete the character at point.  If point is at the
 beginning of the line, there are no characters in the line, and
-the last character typed was not bound to \fBBdelete\-char\fP, then return
+the last character typed was not bound to \fBdelete\-char\fP, then return
 .SM
 .BR EOF .
 .TP
@@ -663,7 +689,7 @@ save the deleted text on the kill ring.
 .B forward\-backward\-delete\-char   
 Delete the character under the cursor, unless the cursor is at the
 end of the line, in which case the character behind the cursor is
-deleted.  By default, this is not bound to a key.
+deleted.
 .TP
 .B quoted\-insert (C\-q, C\-v)
 Add the next character that you type to the line verbatim.  This is
@@ -676,13 +702,15 @@ Insert a tab character.
 Insert the character typed.
 .TP
 .B transpose\-chars (C\-t)
-Drag the character before point forward over the character at point.
-Point moves forward as well.  If point is at the end of the line, then
-transpose the two characters before point.  Negative arguments don't work.
+Drag the character before point forward over the character at point,
+moving point forward as well.
+If point is at the end of the line, then this transposes
+the two characters before point.
+Negative arguments have no effect.
 .TP
 .B transpose\-words (M\-t)
-Drag the word behind the cursor past the word in front of the cursor
-moving the cursor over that word as well.
+Drag the word before point past the word after point,
+moving point over that word as well.
 .TP
 .B upcase\-word (M\-u)
 Uppercase the current (or following) word.  With a negative argument,
@@ -701,7 +729,7 @@ capitalize the previous word, but do not move point.
 .PD 0
 .TP
 .B kill\-line (C\-k)
-Kill the text from the current cursor position to the end of the line.
+Kill the text from point to the end of the line.
 .TP
 .B backward\-kill\-line (C\-x Rubout)
 Kill backward to the beginning of the line.
@@ -712,22 +740,20 @@ The killed text is saved on the kill-ring.
 .\" There is no real difference between this and backward-kill-line
 .TP
 .B kill\-whole\-line
-Kill all characters on the current line, no matter where the
-cursor is.
+Kill all characters on the current line, no matter where point is.
 .TP
 .B kill\-word  (M\-d)
-Kill from the cursor to the end of the current word, or if between
+Kill from point the end of the current word, or if between
 words, to the end of the next word.  Word boundaries are the same as
 those used by \fBforward\-word\fP.
 .TP
 .B backward\-kill\-word (M\-Rubout)
-Kill the word behind the cursor.  Word boundaries are the same as
-those used by \fBbackward\-word\fP.
+Kill the word behind point.
+Word boundaries are the same as those used by \fBbackward\-word\fP.
 .TP
 .B unix\-word\-rubout (C\-w)
-Kill the word behind the cursor, using white space as a word boundary.
-The word boundaries are different from
-.BR backward\-kill\-word .
+Kill the word behind point, using white space as a word boundary.
+The killed text is saved on the kill-ring.
 .TP
 .B delete\-horizontal\-space (M\-\e)
 Delete all spaces and tabs around point.
@@ -748,7 +774,7 @@ Copy the word following point to the kill buffer.
 The word boundaries are the same as \fBforward\-word\fP.
 .TP
 .B yank (C\-y)
-Yank the top of the kill ring into the buffer at the cursor.
+Yank the top of the kill ring into the buffer at point.
 .TP
 .B yank\-pop (M\-y)
 Rotate the kill ring, and yank the new top.  Only works following
@@ -809,8 +835,9 @@ Similar to \fBcomplete\fP, but replaces the word to be completed
 with a single match from the list of possible completions.
 Repeated execution of \fBmenu\-complete\fP steps through the list
 of possible completions, inserting each match in turn.
-At the end of the list of completions, the bell is rung and the
-original text is restored.
+At the end of the list of completions, the bell is rung
+(subject to the setting of \Bbell\-style\fP)
+and the original text is restored.
 An argument of \fIn\fP moves \fIn\fP positions forward in the list
 of matches; a negative argument may be used to move backward 
 through the list.
@@ -822,7 +849,6 @@ Deletes the character under the cursor if not at the beginning or
 end of the line (like \fBdelete-char\fP).
 If at the end of the line, behaves identically to
 \fBpossible-completions\fP.
-This command is unbound by default.
 .PD
 .SS Keyboard Macros
 .PP
@@ -875,8 +901,8 @@ command enough times to return the line to its initial state.
 .B tilde\-expand (M\-&)
 Perform tilde expansion on the current word.
 .TP
-.B set\-mark (C\-@, M-<space>)
-Set the mark to the current point.  If a
+.B set\-mark (C\-@, M\-<space>)
+Set the mark to the point.  If a
 numeric argument is supplied, the mark is set to that position.
 .TP
 .B exchange\-point\-and\-mark (C\-x C\-x)
@@ -895,8 +921,9 @@ character.  A negative count searches for subsequent occurrences.
 The value of the readline
 .B comment\-begin
 variable is inserted at the beginning of the current line, and the line
-is accepted as if a newline had been typed.  This makes the current line
-a shell comment.
+is accepted as if a newline had been typed.  The default value of
+.B comment\-begin
+makes the current line a shell comment.
 .TP
 .B dump\-functions
 Print all of the functions and their key bindings to the
@@ -933,25 +960,23 @@ editing mode.
 .SH DEFAULT KEY BINDINGS
 .LP
 The following is a list of the default emacs and vi bindings.
-Characters with the 8th bit set are written as M\-<character>, and
+Characters with the eighth bit set are written as M\-<character>, and
 are referred to as
 .I metafied
 characters.
 The printable ASCII characters not mentioned in the list of emacs
 standard bindings are bound to the
-.I self\-insert
+.B self\-insert
 function, which just inserts the given character into the input line.
 In vi insertion mode, all characters not specifically mentioned are
 bound to
-.IR self\-insert .
+.BR self\-insert .
 Characters assigned to signal generation by
 .IR stty (1)
 or the terminal driver, such as C-Z or C-C,
 retain that function.
-Upper and lower case
-.I metafied
-characters are bound to the same function in the emacs mode
-meta keymap.
+Upper and lower case metafied characters are bound to the same function in
+the emacs mode meta keymap.
 The remaining characters are unbound, which causes readline
 to ring the bell (subject to the setting of the
 .B bell\-style
@@ -1037,7 +1062,7 @@ Emacs Meta bindings
 "M-Y"  yank-pop
 "M-\e"  delete-horizontal-space
 "M-~"  tilde-expand
-"M-C-?"  backward-delete-word
+"M-C-?"  backward-kill-word
 "M-_"  yank-last-arg
 .PP
 Emacs Control-X bindings
@@ -1097,6 +1122,7 @@ VI Command Mode functions
 "C-V"  quoted-insert
 "C-W"  unix-word-rubout
 "C-Y"  yank
+"C-_"  vi-undo
 "\^ "  forward-char
 "#"  insert-comment
 "$"  end-of-line
@@ -1151,7 +1177,7 @@ VI Command Mode functions
 "r"  vi-change-char
 "s"  vi-subst
 "t"  vi-char-search
-"u"  undo
+"u"  vi-undo
 "w"  vi-next-word
 "x"  vi-delete
 "y"  vi-yank-to
diff --git a/contrib/libreadline/readline.h b/contrib/libreadline/readline.h
index feb54a0..3266f4d 100644
--- a/contrib/libreadline/readline.h
+++ b/contrib/libreadline/readline.h
@@ -61,8 +61,8 @@ extern UNDO_LIST *rl_undo_list;
 
 /* The data structure for mapping textual names to code addresses. */
 typedef struct _funmap {
-  char *name;
-  Function *function;
+  const char *name;
+  rl_command_func_t *function;
 } FUNMAP;
 
 extern FUNMAP **funmap;
@@ -156,8 +156,8 @@ extern int rl_yank __P((int, int));
 extern int rl_yank_pop __P((int, int));
 extern int rl_yank_nth_arg __P((int, int));
 extern int rl_yank_last_arg __P((int, int));
-/* Not available unless __CYGWIN32__ is defined. */
-#ifdef __CYGWIN32__
+/* Not available unless __CYGWIN__ is defined. */
+#ifdef __CYGWIN__
 extern int rl_paste_from_clipboard __P((int, int));
 #endif
 
@@ -197,7 +197,7 @@ extern int rl_noninc_reverse_search_again __P((int, int));
 extern int rl_insert_close __P((int, int));
 
 /* Not available unless READLINE_CALLBACKS is defined. */
-extern void rl_callback_handler_install __P((char *, VFunction *));
+extern void rl_callback_handler_install __P((const char *, rl_vcpfunc_t *));
 extern void rl_callback_read_char __P((void));
 extern void rl_callback_handler_remove __P((void));
 
@@ -261,69 +261,68 @@ extern int rl_vi_eword __P((int, int));
 
 /* Readline functions. */
 /* Read a line of input.  Prompt with PROMPT.  A NULL PROMPT means none. */
-extern char *readline __P((char *));
+extern char *readline __P((const char *));
+
+extern int rl_set_prompt __P((const char *));
+extern int rl_expand_prompt __P((char *));
 
 extern int rl_initialize __P((void));
 
+/* Undocumented; unused by readline */
 extern int rl_discard_argument __P((void));
 
 /* Utility functions to bind keys to readline commands. */
-extern int rl_add_defun __P((char *, Function *, int));
-extern int rl_bind_key __P((int, Function *));
-extern int rl_bind_key_in_map __P((int, Function *, Keymap));
+extern int rl_add_defun __P((const char *, rl_command_func_t *, int));
+extern int rl_bind_key __P((int, rl_command_func_t *));
+extern int rl_bind_key_in_map __P((int, rl_command_func_t *, Keymap));
 extern int rl_unbind_key __P((int));
 extern int rl_unbind_key_in_map __P((int, Keymap));
-extern int rl_unbind_function_in_map __P((Function *, Keymap));
-extern int rl_unbind_command_in_map __P((char *, Keymap));
-extern int rl_set_key __P((char *, Function *, Keymap));
-extern int rl_generic_bind __P((int, char *, char *, Keymap));
-extern int rl_variable_bind __P((char *, char *));
+extern int rl_unbind_function_in_map __P((rl_command_func_t *, Keymap));
+extern int rl_unbind_command_in_map __P((const char *, Keymap));
+extern int rl_set_key __P((const char *, rl_command_func_t *, Keymap));
+extern int rl_generic_bind __P((int, const char *, char *, Keymap));
+extern int rl_variable_bind __P((const char *, const char *));
 
 /* Backwards compatibility, use rl_generic_bind instead. */
-extern int rl_macro_bind __P((char *, char *, Keymap));
+extern int rl_macro_bind __P((const char *, const char *, Keymap));
 
 /* Undocumented in the texinfo manual; not really useful to programs. */
-extern int rl_translate_keyseq __P((char *, char *, int *));
+extern int rl_translate_keyseq __P((const char *, char *, int *));
 extern char *rl_untranslate_keyseq __P((int));
 
-extern Function *rl_named_function __P((char *));
-extern Function *rl_function_of_keyseq __P((char *, Keymap, int *));
+extern rl_command_func_t *rl_named_function __P((const char *));
+extern rl_command_func_t *rl_function_of_keyseq __P((const char *, Keymap, int *));
 
 extern void rl_list_funmap_names __P((void));
-extern char **rl_invoking_keyseqs_in_map __P((Function *, Keymap));
-extern char **rl_invoking_keyseqs __P((Function *));
+extern char **rl_invoking_keyseqs_in_map __P((rl_command_func_t *, Keymap));
+extern char **rl_invoking_keyseqs __P((rl_command_func_t *));
  
 extern void rl_function_dumper __P((int));
 extern void rl_macro_dumper __P((int));
 extern void rl_variable_dumper __P((int));
 
-extern int rl_read_init_file __P((char *));
+extern int rl_read_init_file __P((const char *));
 extern int rl_parse_and_bind __P((char *));
 
 /* Functions for manipulating keymaps. */
-extern Keymap rl_make_bare_keymap __P((void));
-extern Keymap rl_copy_keymap __P((Keymap));
-extern Keymap rl_make_keymap __P((void));
-extern void rl_discard_keymap __P((Keymap));
-
-extern Keymap rl_get_keymap_by_name __P((char *));
 extern char *rl_get_keymap_name __P((Keymap));
-extern void rl_set_keymap __P((Keymap));
-extern Keymap rl_get_keymap __P((void));
+/* Undocumented; used internally only. */
 extern void rl_set_keymap_from_edit_mode __P((void));
 extern char *rl_get_keymap_name_from_edit_mode __P((void));
 
 /* Functions for manipulating the funmap, which maps command names to functions. */
-extern int rl_add_funmap_entry __P((char *, Function *));
+extern int rl_add_funmap_entry __P((const char *, rl_command_func_t *));
+extern const char **rl_funmap_names __P((void));
+/* Undocumented, only used internally -- there is only one funmap, and this
+   function may be called only once. */
 extern void rl_initialize_funmap __P((void));
-extern char **rl_funmap_names __P((void));
 
 /* Utility functions for managing keyboard macros. */
 extern void rl_push_macro_input __P((char *));
 
 /* Functions for undoing, from undo.c */
 extern void rl_add_undo __P((enum undo_code, int, int, char *));
-extern void free_undo_list __P((void));
+extern void rl_free_undo_list __P((void));
 extern int rl_do_undo __P((void));
 extern int rl_begin_undo_group __P((void));
 extern int rl_end_undo_group __P((void));
@@ -336,6 +335,7 @@ extern int rl_on_new_line_with_prompt __P((void));
 extern int rl_forced_update_display __P((void));
 extern int rl_clear_message __P((void));
 extern int rl_reset_line_state __P((void));
+extern int rl_crlf __P((void));
 
 #if (defined (__STDC__) || defined (__cplusplus)) && defined (USE_VARARGS) && defined (PREFER_STDARG)
 extern int rl_message (const char *, ...);
@@ -343,17 +343,17 @@ extern int rl_message (const char *, ...);
 extern int rl_message ();
 #endif
 
-/* Undocumented in texinfo manual. */
 extern int rl_show_char __P((int));
+
+/* Undocumented in texinfo manual. */
 extern int rl_character_len __P((int, int));
-extern int crlf __P((void));
 
 /* Save and restore internal prompt redisplay information. */
 extern void rl_save_prompt __P((void));
 extern void rl_restore_prompt __P((void));
 
 /* Modifying text. */
-extern int rl_insert_text __P((char *));
+extern int rl_insert_text __P((const char *));
 extern int rl_delete_text __P((int, int));
 extern int rl_kill_text __P((int, int));
 extern char *rl_copy_text __P((int, int));
@@ -361,20 +361,25 @@ extern char *rl_copy_text __P((int, int));
 /* Terminal and tty mode management. */
 extern void rl_prep_terminal __P((int));
 extern void rl_deprep_terminal __P((void));
-extern void rltty_set_default_bindings __P((Keymap));
+extern void rl_tty_set_default_bindings __P((Keymap));
 
-extern int rl_reset_terminal __P((char *));
+extern int rl_reset_terminal __P((const char *));
 extern void rl_resize_terminal __P((void));
-
-/* `Public' utility functions . */
-extern void rl_extend_line_buffer __P((int));
-extern int ding __P((void));
+extern void rl_set_screen_size __P((int, int));
+extern void rl_get_screen_size __P((int *, int *));
 
 /* Functions for character input. */
 extern int rl_stuff_char __P((int));
 extern int rl_execute_next __P((int));
+extern int rl_clear_pending_input __P((void));
 extern int rl_read_key __P((void));
 extern int rl_getc __P((FILE *));
+extern int rl_set_keyboard_input_timeout __P((int));
+
+/* `Public' utility functions . */
+extern void rl_extend_line_buffer __P((int));
+extern int rl_ding __P((void));
+extern int rl_alphabetic __P((int));
 
 /* Readline signal handling, from signals.c */
 extern int rl_set_signals __P((void));
@@ -384,19 +389,36 @@ extern void rl_reset_after_signal __P((void));
 extern void rl_free_line_state __P((void));
  
 /* Undocumented. */
-extern int rl_expand_prompt __P((char *));
+extern int rl_set_paren_blink_timeout __P((int));
 
-extern int maybe_save_line __P((void));
-extern int maybe_unsave_line __P((void));
-extern int maybe_replace_line __P((void));
+/* Undocumented. */
+extern int rl_maybe_save_line __P((void));
+extern int rl_maybe_unsave_line __P((void));
+extern int rl_maybe_replace_line __P((void));
 
 /* Completion functions. */
 extern int rl_complete_internal __P((int));
 extern void rl_display_match_list __P((char **, int, int));
 
-extern char **completion_matches __P((char *, CPFunction *));
-extern char *username_completion_function __P((char *, int));
-extern char *filename_completion_function __P((char *, int));
+extern char **rl_completion_matches __P((const char *, rl_compentry_func_t *));
+extern char *rl_username_completion_function __P((const char *, int));
+extern char *rl_filename_completion_function __P((const char *, int));
+
+#if 0
+/* Backwards compatibility (compat.c).  These will go away sometime. */
+extern void free_undo_list __P((void));
+extern int maybe_save_line __P((void));
+extern int maybe_unsave_line __P((void));
+extern int maybe_replace_line __P((void));
+
+extern int ding __P((void));
+extern int alphabetic __P((int));
+extern int crlf __P((void));
+
+extern char **completion_matches __P((char *, rl_compentry_func_t *));
+extern char *username_completion_function __P((const char *, int));
+extern char *filename_completion_function __P((const char *, int));
+#endif
 
 /* **************************************************************** */
 /*								    */
@@ -405,14 +427,21 @@ extern char *filename_completion_function __P((char *, int));
 /* **************************************************************** */
 
 /* The version of this incarnation of the readline library. */
-extern char *rl_library_version;
+extern const char *rl_library_version;
 
 /* True if this is real GNU readline. */
 extern int rl_gnu_readline_p;
 
+/* Flags word encapsulating the current readline state. */
+extern int rl_readline_state;
+
+/* Says which editing mode readline is currently using.  1 means emacs mode;
+   0 means vi mode. */
+extern int rl_editing_mode;
+
 /* The name of the calling program.  You should initialize this to
    whatever was in argv[0].  It is used when parsing conditionals. */
-extern char *rl_readline_name;
+extern const char *rl_readline_name;
 
 /* The prompt readline uses.  This is set from the argument to
    readline (), and should not be assigned to directly. */
@@ -422,7 +451,8 @@ extern char *rl_prompt;
 extern char *rl_line_buffer;
 
 /* The location of point, and end. */
-extern int rl_point, rl_end;
+extern int rl_point;
+extern int rl_end;
 
 /* The mark, or saved cursor position. */
 extern int rl_mark;
@@ -439,29 +469,44 @@ extern int rl_pending_input;
    or directly from an application. */
 extern int rl_dispatching;
 
+/* Non-zero if the user typed a numeric argument before executing the
+   current function. */
+extern int rl_explicit_arg;
+
+/* The current value of the numeric argument specified by the user. */
+extern int rl_numeric_arg;
+
+/* The address of the last command function Readline executed. */
+extern rl_command_func_t *rl_last_func;
+
 /* The name of the terminal to use. */
-extern char *rl_terminal_name;
+extern const char *rl_terminal_name;
 
 /* The input and output streams. */
-extern FILE *rl_instream, *rl_outstream;
+extern FILE *rl_instream;
+extern FILE *rl_outstream;
 
 /* If non-zero, then this is the address of a function to call just
    before readline_internal () prints the first prompt. */
-extern Function *rl_startup_hook;
+extern rl_hook_func_t *rl_startup_hook;
 
 /* If non-zero, this is the address of a function to call just before
    readline_internal_setup () returns and readline_internal starts
    reading input characters. */
-extern Function *rl_pre_input_hook;
+extern rl_hook_func_t *rl_pre_input_hook;
       
 /* The address of a function to call periodically while Readline is
    awaiting character input, or NULL, for no event handling. */
-extern Function *rl_event_hook;
+extern rl_hook_func_t *rl_event_hook;
 
-extern Function *rl_getc_function;
-extern VFunction *rl_redisplay_function;
-extern VFunction *rl_prep_term_function;
-extern VFunction *rl_deprep_term_function;
+/* The address of the function to call to fetch a character from the current
+   Readline input stream */
+extern rl_getc_func_t *rl_getc_function;
+
+extern rl_voidfunc_t *rl_redisplay_function;
+
+extern rl_vintfunc_t *rl_prep_term_function;
+extern rl_voidfunc_t *rl_deprep_term_function;
 
 /* Dispatch variables. */
 extern Keymap rl_executing_keymap;
@@ -482,6 +527,9 @@ extern int rl_already_prompted;
    up to a character bound to accept-line. */
 extern int rl_num_chars_to_read;
 
+/* The text of a currently-executing keyboard macro. */
+extern char *rl_executing_macro;
+
 /* Variables to control readline signal handling. */
 /* If non-zero, readline will install its own signal handlers for
    SIGINT, SIGTERM, SIGQUIT, SIGALRM, SIGTSTP, SIGTTIN, and SIGTTOU. */
@@ -498,7 +546,7 @@ extern int rl_catch_sigwinch;
 /* Pointer to the generator function for completion_matches ().
    NULL means to use filename_entry_function (), the default filename
    completer. */
-extern Function *rl_completion_entry_function;
+extern rl_compentry_func_t *rl_completion_entry_function;
 
 /* If rl_ignore_some_completions_function is non-NULL it is the address
    of a function to call after all of the possible matches have been
@@ -506,7 +554,7 @@ extern Function *rl_completion_entry_function;
    The function is called with one argument; a NULL terminated array
    of (char *).  If your function removes any of the elements, they
    must be free()'ed. */
-extern Function *rl_ignore_some_completions_function;
+extern rl_compignore_func_t *rl_ignore_some_completions_function;
 
 /* Pointer to alternative function to create matches.
    Function is called with TEXT, START, and END.
@@ -515,39 +563,50 @@ extern Function *rl_ignore_some_completions_function;
    If this function exists and returns NULL then call the value of
    rl_completion_entry_function to try to match, otherwise use the
    array of strings returned. */
-extern CPPFunction *rl_attempted_completion_function;
+extern rl_completion_func_t *rl_attempted_completion_function;
 
 /* The basic list of characters that signal a break between words for the
    completer routine.  The initial contents of this variable is what
    breaks words in the shell, i.e. "n\"\\'`@$>". */
-extern char *rl_basic_word_break_characters;
+extern const char *rl_basic_word_break_characters;
 
 /* The list of characters that signal a break between words for
    rl_complete_internal.  The default list is the contents of
    rl_basic_word_break_characters.  */
-extern char *rl_completer_word_break_characters;
+extern const char *rl_completer_word_break_characters;
 
 /* List of characters which can be used to quote a substring of the line.
    Completion occurs on the entire substring, and within the substring   
    rl_completer_word_break_characters are treated as any other character,
    unless they also appear within this list. */
-extern char *rl_completer_quote_characters;
+extern const char *rl_completer_quote_characters;
 
 /* List of quote characters which cause a word break. */
-extern char *rl_basic_quote_characters;
+extern const char *rl_basic_quote_characters;
 
 /* List of characters that need to be quoted in filenames by the completer. */
-extern char *rl_filename_quote_characters;
+extern const char *rl_filename_quote_characters;
 
 /* List of characters that are word break characters, but should be left
    in TEXT when it is passed to the completion function.  The shell uses
    this to help determine what kind of completing to do. */
-extern char *rl_special_prefixes;
+extern const char *rl_special_prefixes;
 
 /* If non-zero, then this is the address of a function to call when
    completing on a directory name.  The function is called with
-   the address of a string (the current directory name) as an arg. */
-extern Function *rl_directory_completion_hook;
+   the address of a string (the current directory name) as an arg.  It
+   changes what is displayed when the possible completions are printed
+   or inserted. */
+extern rl_icppfunc_t *rl_directory_completion_hook;
+
+/* If non-zero, this is the address of a function to call when completing
+   a directory name.  This function takes the address of the directory name
+   to be modified as an argument.  Unlike rl_directory_completion_hook, it
+   only modifies the directory name used in opendir(2), not what is displayed
+   when the possible completions are printed or inserted.  It is called
+   before rl_directory_completion_hook.  I'm not happy with how this works
+   yet, so it's undocumented. */
+extern rl_icppfunc_t *rl_directory_rewrite_hook;
 
 /* Backwards compatibility with previous versions of readline. */
 #define rl_symbolic_link_hook rl_directory_completion_hook
@@ -559,7 +618,7 @@ extern Function *rl_directory_completion_hook;
    where MATCHES is the array of strings that matched, NUM_MATCHES is the
    number of strings in that array, and MAX_LENGTH is the length of the
    longest string in that array. */
-extern VFunction *rl_completion_display_matches_hook;
+extern rl_compdisp_func_t *rl_completion_display_matches_hook;
 
 /* Non-zero means that the results of the matches are to be treated
    as filenames.  This is ALWAYS zero on entry, and can only be changed
@@ -577,17 +636,17 @@ extern int rl_filename_quoting_desired;
    Called with the text to quote, the type of match found (single or multiple)
    and a pointer to the quoting character to be used, which the function can
    reset if desired. */
-extern CPFunction *rl_filename_quoting_function;
+extern rl_quote_func_t *rl_filename_quoting_function;
 
 /* Function to call to remove quoting characters from a filename.  Called
    before completion is attempted, so the embedded quotes do not interfere
    with matching names in the file system. */
-extern CPFunction *rl_filename_dequoting_function;
+extern rl_dequote_func_t *rl_filename_dequoting_function;
 
 /* Function to call to decide whether or not a word break character is
    quoted.  If a character is quoted, it does not break words for the
    completer. */
-extern Function *rl_char_is_quoted_p;
+extern rl_linebuf_func_t *rl_char_is_quoted_p;
 
 /* Non-zero means to suppress normal filename completion after the
    user-specified completion function has been called. */
@@ -624,9 +683,37 @@ extern int rl_inhibit_completion;
 #define SINGLE_MATCH    1
 #define MULT_MATCH      2
 
+/* Possible state values for rl_readline_state */
+#define RL_STATE_NONE		0x00000		/* no state; before first call */
+
+#define RL_STATE_INITIALIZING	0x00001		/* initializing */
+#define RL_STATE_INITIALIZED	0x00002		/* initialization done */
+#define RL_STATE_TERMPREPPED	0x00004		/* terminal is prepped */
+#define RL_STATE_READCMD	0x00008		/* reading a command key */
+#define RL_STATE_METANEXT	0x00010		/* reading input after ESC */
+#define RL_STATE_DISPATCHING	0x00020		/* dispatching to a command */
+#define RL_STATE_MOREINPUT	0x00040		/* reading more input in a command function */
+#define RL_STATE_ISEARCH	0x00080		/* doing incremental search */
+#define RL_STATE_NSEARCH	0x00100		/* doing non-inc search */
+#define RL_STATE_SEARCH		0x00200		/* doing a history search */
+#define RL_STATE_NUMERICARG	0x00400		/* reading numeric argument */
+#define RL_STATE_MACROINPUT	0x00800		/* getting input from a macro */
+#define RL_STATE_MACRODEF	0x01000		/* defining keyboard macro */
+#define RL_STATE_OVERWRITE	0x02000		/* overwrite mode */
+#define RL_STATE_COMPLETING	0x04000		/* doing completion */
+#define RL_STATE_SIGHANDLER	0x08000		/* in readline sighandler */
+#define RL_STATE_UNDOING	0x10000		/* doing an undo */
+#define RL_STATE_INPUTPENDING	0x20000		/* rl_execute_next called */
+
+#define RL_STATE_DONE		0x80000		/* done; accepted line */
+
+#define RL_SETSTATE(x)		(rl_readline_state |= (x))
+#define RL_UNSETSTATE(x)	(rl_readline_state &= ~(x))
+#define RL_ISSTATE(x)		(rl_readline_state & (x))
+
 #if !defined (savestring)
 #define savestring rl_savestring
-extern char *savestring __P((char *));	/* XXX backwards compatibility */
+extern char *savestring __P((char *));  /* XXX backwards compatibility */
 #endif
 
 #ifdef __cplusplus
diff --git a/contrib/libreadline/shell.c b/contrib/libreadline/shell.c
index 10571e3..bbf4603 100644
--- a/contrib/libreadline/shell.c
+++ b/contrib/libreadline/shell.c
@@ -50,11 +50,12 @@
 
 #include <stdio.h>
 
+#include "rlstdc.h"
 #include "rlshell.h"
 #include "xmalloc.h"
 
 #if !defined (HAVE_GETPW_DECLS)
-extern struct passwd *getpwuid ();
+extern struct passwd *getpwuid __P((uid_t));
 #endif /* !HAVE_GETPW_DECLS */
 
 #ifndef NULL
@@ -66,7 +67,7 @@ extern struct passwd *getpwuid ();
 
 /* Does shell-like quoting using single quotes. */
 char *
-single_quote (string)
+sh_single_quote (string)
      char *string;
 {
   register int c;
@@ -97,7 +98,7 @@ single_quote (string)
 /* Set the environment variables LINES and COLUMNS to lines and cols,
    respectively. */
 void
-set_lines_and_columns (lines, cols)
+sh_set_lines_and_columns (lines, cols)
      int lines, cols;
 {
   char *b;
@@ -122,14 +123,14 @@ set_lines_and_columns (lines, cols)
 }
 
 char *
-get_env_value (varname)
-     char *varname;
+sh_get_env_value (varname)
+     const char *varname;
 {
   return ((char *)getenv (varname));
 }
 
 char *
-get_home_dir ()
+sh_get_home_dir ()
 {
   char *home_dir;
   struct passwd *entry;
@@ -148,7 +149,7 @@ get_home_dir ()
 #endif
 
 int
-unset_nodelay_mode (fd)
+sh_unset_nodelay_mode (fd)
      int fd;
 {
   int flags, bflags;
diff --git a/contrib/libreadline/terminal.c b/contrib/libreadline/terminal.c
index 61a28f3..a0b4eb4 100644
--- a/contrib/libreadline/terminal.c
+++ b/contrib/libreadline/terminal.c
@@ -77,9 +77,6 @@ static char *term_string_buffer = (char *)NULL;
 
 static int tcap_initialized;
 
-/* Non-zero means this terminal can't really do anything. */
-static int dumb_term;
-
 #if !defined (__linux__)
 #  if defined (__EMX__) || defined (NEED_EXTERN_PC)
 extern 
@@ -88,27 +85,36 @@ char PC, *BC, *UP;
 #endif /* __linux__ */
 
 /* Some strings to control terminal actions.  These are output by tputs (). */
-char *term_goto, *term_clreol, *term_cr, *term_clrpag, *term_backspace;
-char *term_pc;
+char *_rl_term_clreol;
+char *_rl_term_clrpag;
+char *_rl_term_cr;
+char *_rl_term_backspace;
+char *_rl_term_goto;
+char *_rl_term_pc;
 
 /* Non-zero if we determine that the terminal can do character insertion. */
-int terminal_can_insert = 0;
+int _rl_terminal_can_insert = 0;
 
 /* How to insert characters. */
-char *term_im, *term_ei, *term_ic, *term_ip, *term_IC;
+char *_rl_term_im;
+char *_rl_term_ei;
+char *_rl_term_ic;
+char *_rl_term_ip;
+char *_rl_term_IC;
 
 /* How to delete characters. */
-char *term_dc, *term_DC;
+char *_rl_term_dc;
+char *_rl_term_DC;
 
 #if defined (HACK_TERMCAP_MOTION)
-char *term_forward_char;
+char *_rl_term_forward_char;
 #endif  /* HACK_TERMCAP_MOTION */
 
 /* How to go up a line. */
-char *term_up;
+char *_rl_term_up;
 
-/* A visible bell, if the terminal can be made to flash the screen. */
-static char *visible_bell;
+/* A visible bell; char if the terminal can be made to flash the screen. */
+static char *_rl_visible_bell;
 
 /* Non-zero means the terminal can auto-wrap lines. */
 int _rl_term_autowrap;
@@ -117,20 +123,26 @@ int _rl_term_autowrap;
 static int term_has_meta;
 
 /* The sequences to write to turn on and off the meta key, if this
-   terminal    has one. */
-static char *term_mm, *term_mo;
+   terminal has one. */
+static char *_rl_term_mm;
+static char *_rl_term_mo;
 
 /* The key sequences output by the arrow keys, if this terminal has any. */
-static char *term_ku, *term_kd, *term_kr, *term_kl;
+static char *_rl_term_ku;
+static char *_rl_term_kd;
+static char *_rl_term_kr;
+static char *_rl_term_kl;
 
 /* How to initialize and reset the arrow keys, if this terminal has any. */
-static char *term_ks, *term_ke;
+static char *_rl_term_ks;
+static char *_rl_term_ke;
 
 /* The key sequences sent by the Home and End keys, if any. */
-static char *term_kh, *term_kH;
+static char *_rl_term_kh;
+static char *_rl_term_kH;
 
 /* Variables that hold the screen dimensions, used by the display code. */
-int screenwidth, screenheight, screenchars;
+int _rl_screenwidth, _rl_screenheight, _rl_screenchars;
 
 /* Non-zero means the user wants to enable the keypad. */
 int _rl_enable_keypad;
@@ -170,73 +182,93 @@ _rl_get_screen_size (tty, ignore_env)
 #if defined (TIOCGWINSZ)
   if (ioctl (tty, TIOCGWINSZ, &window_size) == 0)
     {
-      screenwidth = (int) window_size.ws_col;
-      screenheight = (int) window_size.ws_row;
+      _rl_screenwidth = (int) window_size.ws_col;
+      _rl_screenheight = (int) window_size.ws_row;
     }
 #endif /* TIOCGWINSZ */
 
 #if defined (__EMX__)
-  _emx_get_screensize (&screenwidth, &screenheight);
+  _emx_get_screensize (&_rl_screenwidth, &_rl_screenheight);
 #endif
 
   /* Environment variable COLUMNS overrides setting of "co" if IGNORE_ENV
      is unset. */
-  if (screenwidth <= 0)
+  if (_rl_screenwidth <= 0)
     {
-      if (ignore_env == 0 && (ss = get_env_value ("COLUMNS")))
-	screenwidth = atoi (ss);
+      if (ignore_env == 0 && (ss = sh_get_env_value ("COLUMNS")))
+	_rl_screenwidth = atoi (ss);
 
 #if !defined (__DJGPP__)
-      if (screenwidth <= 0 && term_string_buffer)
-	screenwidth = tgetnum ("co");
+      if (_rl_screenwidth <= 0 && term_string_buffer)
+	_rl_screenwidth = tgetnum ("co");
 #endif
     }
 
   /* Environment variable LINES overrides setting of "li" if IGNORE_ENV
      is unset. */
-  if (screenheight <= 0)
+  if (_rl_screenheight <= 0)
     {
-      if (ignore_env == 0 && (ss = get_env_value ("LINES")))
-	screenheight = atoi (ss);
+      if (ignore_env == 0 && (ss = sh_get_env_value ("LINES")))
+	_rl_screenheight = atoi (ss);
 
 #if !defined (__DJGPP__)
-      if (screenheight <= 0 && term_string_buffer)
-	screenheight = tgetnum ("li");
+      if (_rl_screenheight <= 0 && term_string_buffer)
+	_rl_screenheight = tgetnum ("li");
 #endif
     }
 
   /* If all else fails, default to 80x24 terminal. */
-  if (screenwidth <= 1)
-    screenwidth = 80;
+  if (_rl_screenwidth <= 1)
+    _rl_screenwidth = 80;
 
-  if (screenheight <= 0)
-    screenheight = 24;
+  if (_rl_screenheight <= 0)
+    _rl_screenheight = 24;
 
   /* If we're being compiled as part of bash, set the environment
      variables $LINES and $COLUMNS to new values.  Otherwise, just
      do a pair of putenv () or setenv () calls. */
-  set_lines_and_columns (screenheight, screenwidth);
+  sh_set_lines_and_columns (_rl_screenheight, _rl_screenwidth);
 
   if (_rl_term_autowrap == 0)
-    screenwidth--;
+    _rl_screenwidth--;
 
-  screenchars = screenwidth * screenheight;
+  _rl_screenchars = _rl_screenwidth * _rl_screenheight;
 }
 
 void
 _rl_set_screen_size (rows, cols)
      int rows, cols;
 {
-  screenheight = rows;
-  screenwidth = cols;
+  if (rows == 0 || cols == 0)
+    return;
+
+  _rl_screenheight = rows;
+  _rl_screenwidth = cols;
 
   if (_rl_term_autowrap == 0)
-    screenwidth--;
+    _rl_screenwidth--;
 
-  screenchars = screenwidth * screenheight;
+  _rl_screenchars = _rl_screenwidth * _rl_screenheight;
+}
+
+void
+rl_set_screen_size (rows, cols)
+     int rows, cols;
+{
+  _rl_set_screen_size (rows, cols);
 }
 
 void
+rl_get_screen_size (rows, cols)
+     int *rows, *cols;
+{
+  if (rows)
+    *rows = _rl_screenheight;
+  if (cols)
+    *cols = _rl_screenwidth;
+}
+     
+void
 rl_resize_terminal ()
 {
   if (readline_echoing_p)
@@ -247,7 +279,7 @@ rl_resize_terminal ()
 }
 
 struct _tc_string {
-     char *tc_var;
+     const char *tc_var;
      char **tc_value;
 };
 
@@ -255,32 +287,32 @@ struct _tc_string {
    search algorithm to something smarter. */
 static struct _tc_string tc_strings[] =
 {
-  { "DC", &term_DC },
-  { "IC", &term_IC },
-  { "ce", &term_clreol },
-  { "cl", &term_clrpag },
-  { "cr", &term_cr },
-  { "dc", &term_dc },
-  { "ei", &term_ei },
-  { "ic", &term_ic },
-  { "im", &term_im },
-  { "kd", &term_kd },
-  { "kh", &term_kh },	/* home */
-  { "@7", &term_kH },	/* end */
-  { "kl", &term_kl },
-  { "kr", &term_kr },
-  { "ku", &term_ku },
-  { "ks", &term_ks },
-  { "ke", &term_ke },
-  { "le", &term_backspace },
-  { "mm", &term_mm },
-  { "mo", &term_mo },
+  { "DC", &_rl_term_DC },
+  { "IC", &_rl_term_IC },
+  { "ce", &_rl_term_clreol },
+  { "cl", &_rl_term_clrpag },
+  { "cr", &_rl_term_cr },
+  { "dc", &_rl_term_dc },
+  { "ei", &_rl_term_ei },
+  { "ic", &_rl_term_ic },
+  { "im", &_rl_term_im },
+  { "kd", &_rl_term_kd },
+  { "kh", &_rl_term_kh },	/* home */
+  { "@7", &_rl_term_kH },	/* end */
+  { "kl", &_rl_term_kl },
+  { "kr", &_rl_term_kr },
+  { "ku", &_rl_term_ku },
+  { "ks", &_rl_term_ks },
+  { "ke", &_rl_term_ke },
+  { "le", &_rl_term_backspace },
+  { "mm", &_rl_term_mm },
+  { "mo", &_rl_term_mo },
 #if defined (HACK_TERMCAP_MOTION)
-  { "nd", &term_forward_char },
+  { "nd", &_rl_term_forward_char },
 #endif
-  { "pc", &term_pc },
-  { "up", &term_up },
-  { "vb", &visible_bell },
+  { "pc", &_rl_term_pc },
+  { "up", &_rl_term_up },
+  { "vb", &_rl_visible_bell },
 };
 
 #define NUM_TC_STRINGS (sizeof (tc_strings) / sizeof (struct _tc_string))
@@ -305,16 +337,17 @@ get_term_capabilities (bp)
 
 int
 _rl_init_terminal_io (terminal_name)
-     char *terminal_name;
+     const char *terminal_name;
 {
-  char *term, *buffer;
+  const char *term;
+  char *buffer;
   int tty, tgetent_ret;
   Keymap xkeymap;
 
-  term = terminal_name ? terminal_name : get_env_value ("TERM");
-  term_clrpag = term_cr = term_clreol = (char *)NULL;
+  term = terminal_name ? terminal_name : sh_get_env_value ("TERM");
+  _rl_term_clrpag = _rl_term_cr = _rl_term_clreol = (char *)NULL;
   tty = rl_instream ? fileno (rl_instream) : 0;
-  screenwidth = screenheight = 0;
+  _rl_screenwidth = _rl_screenheight = 0;
 
   if (term == 0)
     term = "dumb";
@@ -345,41 +378,40 @@ _rl_init_terminal_io (terminal_name)
       FREE (term_buffer);
       buffer = term_buffer = term_string_buffer = (char *)NULL;
 
-      dumb_term = 1;
       _rl_term_autowrap = 0;	/* used by _rl_get_screen_size */
 
 #if defined (__EMX__)
-      _emx_get_screensize (&screenwidth, &screenheight);
-      screenwidth--;
+      _emx_get_screensize (&_rl_screenwidth, &_rl_screenheight);
+      _rl_screenwidth--;
 #else /* !__EMX__ */
       _rl_get_screen_size (tty, 0);
 #endif /* !__EMX__ */
 
       /* Defaults. */
-      if (screenwidth <= 0 || screenheight <= 0)
+      if (_rl_screenwidth <= 0 || _rl_screenheight <= 0)
         {
-	  screenwidth = 79;
-	  screenheight = 24;
+	  _rl_screenwidth = 79;
+	  _rl_screenheight = 24;
         }
 
       /* Everything below here is used by the redisplay code (tputs). */
-      screenchars = screenwidth * screenheight;
-      term_cr = "\r";
-      term_im = term_ei = term_ic = term_IC = (char *)NULL;
-      term_up = term_dc = term_DC = visible_bell = (char *)NULL;
-      term_ku = term_kd = term_kl = term_kr = (char *)NULL;
-      term_mm = term_mo = (char *)NULL;
+      _rl_screenchars = _rl_screenwidth * _rl_screenheight;
+      _rl_term_cr = "\r";
+      _rl_term_im = _rl_term_ei = _rl_term_ic = _rl_term_IC = (char *)NULL;
+      _rl_term_up = _rl_term_dc = _rl_term_DC = _rl_visible_bell = (char *)NULL;
+      _rl_term_ku = _rl_term_kd = _rl_term_kl = _rl_term_kr = (char *)NULL;
+      _rl_term_mm = _rl_term_mo = (char *)NULL;
 #if defined (HACK_TERMCAP_MOTION)
       term_forward_char = (char *)NULL;
 #endif
-      terminal_can_insert = term_has_meta = 0;
+      _rl_terminal_can_insert = term_has_meta = 0;
 
       /* Reasonable defaults for tgoto().  Readline currently only uses
-         tgoto if term_IC or term_DC is defined, but just in case we
+         tgoto if _rl_term_IC or _rl_term_DC is defined, but just in case we
          change that later... */
       PC = '\0';
-      BC = term_backspace = "\b";
-      UP = term_up;
+      BC = _rl_term_backspace = "\b";
+      UP = _rl_term_up;
 
       return 0;
     }
@@ -388,12 +420,12 @@ _rl_init_terminal_io (terminal_name)
 
   /* Set up the variables that the termcap library expects the application
      to provide. */
-  PC = term_pc ? *term_pc : 0;
-  BC = term_backspace;
-  UP = term_up;
+  PC = _rl_term_pc ? *_rl_term_pc : 0;
+  BC = _rl_term_backspace;
+  UP = _rl_term_up;
 
-  if (!term_cr)
-    term_cr = "\r";
+  if (!_rl_term_cr)
+    _rl_term_cr = "\r";
 
   _rl_term_autowrap = tgetflag ("am") && tgetflag ("xn");
 
@@ -403,36 +435,36 @@ _rl_init_terminal_io (terminal_name)
       character insertion if *any one of* the capabilities `IC',
       `im', `ic' or `ip' is provided."  But we can't do anything if
       only `ip' is provided, so... */
-  terminal_can_insert = (term_IC || term_im || term_ic);
+  _rl_terminal_can_insert = (_rl_term_IC || _rl_term_im || _rl_term_ic);
 
   /* Check to see if this terminal has a meta key and clear the capability
      variables if there is none. */
   term_has_meta = (tgetflag ("km") || tgetflag ("MT"));
   if (!term_has_meta)
-    term_mm = term_mo = (char *)NULL;
+    _rl_term_mm = _rl_term_mo = (char *)NULL;
 
   /* Attempt to find and bind the arrow keys.  Do not override already
      bound keys in an overzealous attempt, however. */
   xkeymap = _rl_keymap;
 
   _rl_keymap = emacs_standard_keymap;
-  _rl_bind_if_unbound (term_ku, rl_get_previous_history);
-  _rl_bind_if_unbound (term_kd, rl_get_next_history);
-  _rl_bind_if_unbound (term_kr, rl_forward);
-  _rl_bind_if_unbound (term_kl, rl_backward);
+  _rl_bind_if_unbound (_rl_term_ku, rl_get_previous_history);
+  _rl_bind_if_unbound (_rl_term_kd, rl_get_next_history);
+  _rl_bind_if_unbound (_rl_term_kr, rl_forward);
+  _rl_bind_if_unbound (_rl_term_kl, rl_backward);
 
-  _rl_bind_if_unbound (term_kh, rl_beg_of_line);	/* Home */
-  _rl_bind_if_unbound (term_kH, rl_end_of_line);	/* End */
+  _rl_bind_if_unbound (_rl_term_kh, rl_beg_of_line);	/* Home */
+  _rl_bind_if_unbound (_rl_term_kH, rl_end_of_line);	/* End */
 
 #if defined (VI_MODE)
   _rl_keymap = vi_movement_keymap;
-  _rl_bind_if_unbound (term_ku, rl_get_previous_history);
-  _rl_bind_if_unbound (term_kd, rl_get_next_history);
-  _rl_bind_if_unbound (term_kr, rl_forward);
-  _rl_bind_if_unbound (term_kl, rl_backward);
+  _rl_bind_if_unbound (_rl_term_ku, rl_get_previous_history);
+  _rl_bind_if_unbound (_rl_term_kd, rl_get_next_history);
+  _rl_bind_if_unbound (_rl_term_kr, rl_forward);
+  _rl_bind_if_unbound (_rl_term_kl, rl_backward);
 
-  _rl_bind_if_unbound (term_kh, rl_beg_of_line);	/* Home */
-  _rl_bind_if_unbound (term_kH, rl_end_of_line);	/* End */
+  _rl_bind_if_unbound (_rl_term_kh, rl_beg_of_line);	/* Home */
+  _rl_bind_if_unbound (_rl_term_kH, rl_end_of_line);	/* End */
 #endif /* VI_MODE */
 
   _rl_keymap = xkeymap;
@@ -442,7 +474,7 @@ _rl_init_terminal_io (terminal_name)
 
 char *
 rl_get_termcap (cap)
-     char *cap;
+     const char *cap;
 {
   register int i;
 
@@ -460,7 +492,7 @@ rl_get_termcap (cap)
    has changed. */
 int
 rl_reset_terminal (terminal_name)
-     char *terminal_name;
+     const char *terminal_name;
 {
   _rl_init_terminal_io (terminal_name);
   return 0;
@@ -486,7 +518,7 @@ _rl_output_character_function (c)
 /* Write COUNT characters from STRING to the output stream. */
 void
 _rl_output_some_chars (string, count)
-     char *string;
+     const char *string;
      int count;
 {
   fwrite (string, 1, count, _rl_out_stream);
@@ -499,9 +531,9 @@ _rl_backspace (count)
 {
   register int i;
 
-  if (term_backspace)
+  if (_rl_term_backspace)
     for (i = 0; i < count; i++)
-      tputs (term_backspace, 1, _rl_output_character_function);
+      tputs (_rl_term_backspace, 1, _rl_output_character_function);
   else
     for (i = 0; i < count; i++)
       putc ('\b', _rl_out_stream);
@@ -510,11 +542,11 @@ _rl_backspace (count)
 
 /* Move to the start of the next line. */
 int
-crlf ()
+rl_crlf ()
 {
 #if defined (NEW_TTY_DRIVER)
-  if (term_cr)
-    tputs (term_cr, 1, _rl_output_character_function);
+  if (_rl_term_cr)
+    tputs (_rl_term_cr, 1, _rl_output_character_function);
 #endif /* NEW_TTY_DRIVER */
   putc ('\n', _rl_out_stream);
   return 0;
@@ -522,7 +554,7 @@ crlf ()
 
 /* Ring the terminal bell. */
 int
-ding ()
+rl_ding ()
 {
   if (readline_echoing_p)
     {
@@ -532,9 +564,9 @@ ding ()
 	default:
 	  break;
 	case VISIBLE_BELL:
-	  if (visible_bell)
+	  if (_rl_visible_bell)
 	    {
-	      tputs (visible_bell, 1, _rl_output_character_function);
+	      tputs (_rl_visible_bell, 1, _rl_output_character_function);
 	      break;
 	    }
 	  /* FALLTHROUGH */
@@ -558,8 +590,8 @@ void
 _rl_enable_meta_key ()
 {
 #if !defined (__DJGPP__)
-  if (term_has_meta && term_mm)
-    tputs (term_mm, 1, _rl_output_character_function);
+  if (term_has_meta && _rl_term_mm)
+    tputs (_rl_term_mm, 1, _rl_output_character_function);
 #endif
 }
 
@@ -568,9 +600,9 @@ _rl_control_keypad (on)
      int on;
 {
 #if !defined (__DJGPP__)
-  if (on && term_ks)
-    tputs (term_ks, 1, _rl_output_character_function);
-  else if (!on && term_ke)
-    tputs (term_ke, 1, _rl_output_character_function);
+  if (on && _rl_term_ks)
+    tputs (_rl_term_ks, 1, _rl_output_character_function);
+  else if (!on && _rl_term_ke)
+    tputs (_rl_term_ke, 1, _rl_output_character_function);
 #endif
 }
diff --git a/contrib/libreadline/util.c b/contrib/libreadline/util.c
index cd6a3b0..d8e01ee 100644
--- a/contrib/libreadline/util.c
+++ b/contrib/libreadline/util.c
@@ -68,10 +68,10 @@
    in words, or 1 if it is. */
 
 int _rl_allow_pathname_alphabetic_chars = 0;
-static char *pathname_alphabetic_chars = "/-_=~.#$";
+static const char *pathname_alphabetic_chars = "/-_=~.#$";
 
 int
-alphabetic (c)
+rl_alphabetic (c)
      int c;
 {
   if (ALPHABETIC (c))
@@ -85,16 +85,16 @@ alphabetic (c)
 int
 _rl_abort_internal ()
 {
-  ding ();
+  rl_ding ();
   rl_clear_message ();
   _rl_init_argument ();
-  rl_pending_input = 0;
+  rl_clear_pending_input ();
 
   _rl_defining_kbd_macro = 0;
-  while (_rl_executing_macro)
+  while (rl_executing_macro)
     _rl_pop_executing_macro ();
 
-  rl_last_func = (Function *)NULL;
+  rl_last_func = (rl_command_func_t *)NULL;
   longjmp (readline_top_level, 1);
   return (0);
 }
@@ -114,7 +114,7 @@ rl_tty_status (count, key)
   ioctl (1, TIOCSTAT, (char *)0);
   rl_refresh_line (count, key);
 #else
-  ding ();
+  rl_ding ();
 #endif
   return 0;
 }
@@ -216,13 +216,35 @@ rl_tilde_expand (ignore, key)
    match in s1.  The compare is case insensitive. */
 char *
 _rl_strindex (s1, s2)
-     register char *s1, *s2;
+     register const char *s1, *s2;
 {
   register int i, l, len;
 
   for (i = 0, l = strlen (s2), len = strlen (s1); (len - i) >= l; i++)
     if (_rl_strnicmp (s1 + i, s2, l) == 0)
-      return (s1 + i);
+      return ((char *) (s1 + i));
+  return ((char *)NULL);
+}
+
+/* Find the first occurrence in STRING1 of any character from STRING2.
+   Return a pointer to the character in STRING1. */
+char *
+_rl_strpbrk (string1, string2)
+     const char *string1, *string2;
+{
+  register const char *scan;
+
+  if (string2 == NULL)
+    return ((char *)NULL);
+
+  for (; *string1; string1++)
+    {
+      for (scan = string2; *scan; scan++)
+	{
+	  if (*string1 == *scan)
+	    return ((char *)string1);
+	}
+    }
   return ((char *)NULL);
 }
 
@@ -346,7 +368,7 @@ _rl_digit_value (c)
 #undef _rl_savestring
 char *
 _rl_savestring (s)
-     char *s;
+     const char *s;
 {
-  return ((char *)strcpy (xmalloc (1 + (int)strlen (s)), (s)));
+  return (strcpy (xmalloc (1 + (int)strlen (s)), (s)));
 }