Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.

===================================================================
RCS file: /ftp/cvs/cvsroot/src/lib/libedit/readline.c,v
rcsdiff: /ftp/cvs/cvsroot/src/lib/libedit/readline.c,v: warning: Unknown phrases like `commitid ...;' are present.
retrieving revision 1.69
retrieving revision 1.132
diff -u -p -r1.69 -r1.132
--- src/lib/libedit/readline.c	2006/08/21 12:45:30	1.69
+++ src/lib/libedit/readline.c	2016/05/09 21:27:55	1.132
@@ -1,4 +1,4 @@
-/*	$NetBSD: readline.c,v 1.69 2006/08/21 12:45:30 christos Exp $	*/
+/*	$NetBSD: readline.c,v 1.132 2016/05/09 21:27:55 christos Exp $	*/
 
 /*-
  * Copyright (c) 1997 The NetBSD Foundation, Inc.
@@ -15,9 +15,6 @@
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
  *    documentation and/or other materials provided with the distribution.
- * 3. Neither the name of The NetBSD Foundation nor the names of its
- *    contributors may be used to endorse or promote products derived
- *    from this software without specific prior written permission.
  *
  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
@@ -34,33 +31,28 @@
 
 #include "config.h"
 #if !defined(lint) && !defined(SCCSID)
-__RCSID("$NetBSD: readline.c,v 1.69 2006/08/21 12:45:30 christos Exp $");
+__RCSID("$NetBSD: readline.c,v 1.132 2016/05/09 21:27:55 christos Exp $");
 #endif /* not lint && not SCCSID */
 
 #include <sys/types.h>
 #include <sys/stat.h>
-#include <stdio.h>
+#include <ctype.h>
 #include <dirent.h>
-#include <string.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <limits.h>
 #include <pwd.h>
-#include <ctype.h>
+#include <setjmp.h>
+#include <stdint.h>
+#include <stdio.h>
 #include <stdlib.h>
+#include <string.h>
 #include <unistd.h>
-#include <limits.h>
-#include <errno.h>
-#include <fcntl.h>
-#ifdef HAVE_VIS_H
 #include <vis.h>
-#else
-#include "np/vis.h"
-#endif
-#ifdef HAVE_ALLOCA_H
-#include <alloca.h>
-#endif
-#include "el.h"
-#include "fcns.h"		/* for EL_NUM_FCNS */
-#include "histedit.h"
+
 #include "readline/readline.h"
+#include "el.h"
+#include "fcns.h"
 #include "filecomplete.h"
 
 void rl_prep_terminal(int);
@@ -75,6 +67,7 @@ void rl_deprep_terminal(void);
 /* readline compatibility stuff - look at readline sources/documentation */
 /* to see what these variables mean */
 const char *rl_library_version = "EditLine wrapper";
+int rl_readline_version = RL_READLINE_VERSION;
 static char empty[] = { '\0' };
 static char expand_chars[] = { ' ', '\t', '\n', '=', '(', '\0' };
 static char break_chars[] = { ' ', '\t', '\n', '"', '\\', '\'', '`', '@', '$',
@@ -85,9 +78,20 @@ FILE *rl_outstream = NULL;
 int rl_point = 0;
 int rl_end = 0;
 char *rl_line_buffer = NULL;
-VCPFunction *rl_linefunc = NULL;
+rl_vcpfunc_t *rl_linefunc = NULL;
 int rl_done = 0;
 VFunction *rl_event_hook = NULL;
+KEYMAP_ENTRY_ARRAY emacs_standard_keymap,
+    emacs_meta_keymap,
+    emacs_ctlx_keymap;
+/*
+ * The following is not implemented; we always catch signals in the
+ * libedit fashion: set handlers on entry to el_gets() and clear them
+ * on the way out. This simplistic approach works for most cases; if
+ * it does not work for your application, please let us know.
+ */
+int rl_catch_signals = 1;
+int rl_catch_sigwinch = 1;
 
 int history_base = 1;		/* probably never subject to change */
 int history_length = 0;
@@ -103,21 +107,24 @@ int rl_attempted_completion_over = 0;
 char *rl_basic_word_break_characters = break_chars;
 char *rl_completer_word_break_characters = NULL;
 char *rl_completer_quote_characters = NULL;
-Function *rl_completion_entry_function = NULL;
-CPPFunction *rl_attempted_completion_function = NULL;
+rl_compentry_func_t *rl_completion_entry_function = NULL;
+char *(*rl_completion_word_break_hook)(void) = NULL;
+rl_completion_func_t *rl_attempted_completion_function = NULL;
 Function *rl_pre_input_hook = NULL;
 Function *rl_startup1_hook = NULL;
-Function *rl_getc_function = NULL;
+int (*rl_getc_function)(FILE *) = NULL;
 char *rl_terminal_name = NULL;
 int rl_already_prompted = 0;
 int rl_filename_completion_desired = 0;
 int rl_ignore_completion_duplicates = 0;
-int rl_catch_signals = 1;
+int readline_echoing_p = 1;
+int _rl_print_completions_horizontally = 0;
 VFunction *rl_redisplay_function = NULL;
 Function *rl_startup_hook = NULL;
 VFunction *rl_completion_display_matches_hook = NULL;
 VFunction *rl_prep_term_function = (VFunction *)rl_prep_terminal;
 VFunction *rl_deprep_term_function = (VFunction *)rl_deprep_terminal;
+KEYMAP_ENTRY_ARRAY emacs_meta_keymap;
 
 /*
  * The current prompt string.
@@ -149,23 +156,32 @@ char *rl_special_prefixes = NULL;
  */
 int rl_completion_append_character = ' ';
 
+/*
+ * When the history cursor is on the newest element and next_history()
+ * is called, GNU readline moves the cursor beyond the newest element.
+ * The editline library does not provide data structures to express
+ * that state, so we need a local flag.
+ */
+static int current_history_valid = 1;
+
 /* stuff below is used internally by libedit for readline emulation */
 
 static History *h = NULL;
 static EditLine *e = NULL;
-static Function *map[256];
+static rl_command_func_t *map[256];
+static jmp_buf topbuf;
 
 /* internal functions */
 static unsigned char	 _el_rl_complete(EditLine *, int);
 static unsigned char	 _el_rl_tstp(EditLine *, int);
 static char		*_get_prompt(EditLine *);
-static int		 _getc_function(EditLine *, char *);
+static int		 _getc_function(EditLine *, wchar_t *);
 static HIST_ENTRY	*_move_history(int);
 static int		 _history_expand_command(const char *, size_t, size_t,
     char **);
 static char		*_rl_compat_sub(const char *, const char *,
     const char *, int);
-static int		 _rl_event_read_char(EditLine *, char *);
+static int		 _rl_event_read_char(EditLine *, wchar_t *);
 static void		 _rl_update_pos(void);
 
 
@@ -174,7 +190,7 @@ static char *
 _get_prompt(EditLine *el __attribute__((__unused__)))
 {
 	rl_already_prompted = 1;
-	return (rl_prompt);
+	return rl_prompt;
 }
 
 
@@ -188,12 +204,12 @@ _move_history(int op)
 	static HIST_ENTRY rl_he;
 
 	if (history(h, &ev, op) != 0)
-		return (HIST_ENTRY *) NULL;
+		return NULL;
 
 	rl_he.line = ev.str;
 	rl_he.data = NULL;
 
-	return (&rl_he);
+	return &rl_he;
 }
 
 
@@ -202,33 +218,89 @@ _move_history(int op)
  */
 static int
 /*ARGSUSED*/
-_getc_function(EditLine *el, char *c)
+_getc_function(EditLine *el __attribute__((__unused__)), wchar_t *c)
 {
 	int i;
 
-	i = (*rl_getc_function)(NULL, 0);
+	i = (*rl_getc_function)(NULL);
 	if (i == -1)
 		return 0;
-	*c = i;
+	*c = (wchar_t)i;
 	return 1;
 }
 
+static void
+_resize_fun(EditLine *el, void *a)
+{
+	const LineInfo *li;
+	char **ap = a;
+
+	li = el_line(el);
+	/* a cheesy way to get rid of const cast. */
+	*ap = memchr(li->buffer, *li->buffer, (size_t)1);
+}
+
+static const char *
+_default_history_file(void)
+{
+	struct passwd *p;
+	static char *path;
+	size_t len;
+
+	if (path)
+		return path;
+
+	if ((p = getpwuid(getuid())) == NULL)
+		return NULL;
+
+	len = strlen(p->pw_dir) + sizeof("/.history");
+	if ((path = malloc(len)) == NULL)
+		return NULL;
+
+	(void)snprintf(path, len, "%s/.history", p->pw_dir);
+	return path;
+}
 
 /*
  * READLINE compatibility stuff
  */
 
 /*
+ * Set the prompt
+ */
+int
+rl_set_prompt(const char *prompt)
+{
+	char *p;
+
+	if (!prompt)
+		prompt = "";
+	if (rl_prompt != NULL && strcmp(rl_prompt, prompt) == 0)
+		return 0;
+	if (rl_prompt)
+		el_free(rl_prompt);
+	rl_prompt = strdup(prompt);
+	if (rl_prompt == NULL)
+		return -1;
+
+	while ((p = strchr(rl_prompt, RL_PROMPT_END_IGNORE)) != NULL)
+		*p = RL_PROMPT_START_IGNORE;
+
+	return 0;
+}
+
+/*
  * initialize rl compat stuff
  */
 int
 rl_initialize(void)
 {
 	HistEvent ev;
-	const LineInfo *li;
 	int editmode = 1;
 	struct termios t;
 
+	current_history_valid = 1;
+
 	if (e != NULL)
 		el_end(e);
 	if (h != NULL)
@@ -252,29 +324,31 @@ rl_initialize(void)
 
 	h = history_init();
 	if (!e || !h)
-		return (-1);
+		return -1;
 
 	history(h, &ev, H_SETSIZE, INT_MAX);	/* unlimited */
 	history_length = 0;
 	max_input_history = INT_MAX;
 	el_set(e, EL_HIST, history, h);
 
+	/* Setup resize function */
+	el_set(e, EL_RESIZE, _resize_fun, &rl_line_buffer);
+
 	/* setup getc function if valid */
 	if (rl_getc_function)
 		el_set(e, EL_GETCFN, _getc_function);
 
 	/* for proper prompt printing in readline() */
-	rl_prompt = strdup("");
-	if (rl_prompt == NULL) {
+	if (rl_set_prompt("") == -1) {
 		history_end(h);
 		el_end(e);
 		return -1;
 	}
-	el_set(e, EL_PROMPT, _get_prompt);
+	el_set(e, EL_PROMPT, _get_prompt, RL_PROMPT_START_IGNORE);
 	el_set(e, EL_SIGNAL, rl_catch_signals);
 
 	/* set default mode to "emacs"-style and read setting afterwards */
-	/* so this can be overriden */
+	/* so this can be overridden */
 	el_set(e, EL_EDITOR, "emacs");
 	if (rl_terminal_name != NULL)
 		el_set(e, EL_TERMINAL, rl_terminal_name);
@@ -297,7 +371,38 @@ rl_initialize(void)
 	    "ReadLine compatible suspend function",
 	    _el_rl_tstp);
 	el_set(e, EL_BIND, "^Z", "rl_tstp", NULL);
-		
+
+	/*
+	 * Set some readline compatible key-bindings.
+	 */
+	el_set(e, EL_BIND, "^R", "em-inc-search-prev", NULL);
+
+	/*
+	 * Allow the use of Home/End keys.
+	 */
+	el_set(e, EL_BIND, "\\e[1~", "ed-move-to-beg", NULL);
+	el_set(e, EL_BIND, "\\e[4~", "ed-move-to-end", NULL);
+	el_set(e, EL_BIND, "\\e[7~", "ed-move-to-beg", NULL);
+	el_set(e, EL_BIND, "\\e[8~", "ed-move-to-end", NULL);
+	el_set(e, EL_BIND, "\\e[H", "ed-move-to-beg", NULL);
+	el_set(e, EL_BIND, "\\e[F", "ed-move-to-end", NULL);
+
+	/*
+	 * Allow the use of the Delete/Insert keys.
+	 */
+	el_set(e, EL_BIND, "\\e[3~", "ed-delete-next-char", NULL);
+	el_set(e, EL_BIND, "\\e[2~", "ed-quoted-insert", NULL);
+
+	/*
+	 * Ctrl-left-arrow and Ctrl-right-arrow for word moving.
+	 */
+	el_set(e, EL_BIND, "\\e[1;5C", "em-next-word", NULL);
+	el_set(e, EL_BIND, "\\e[1;5D", "ed-prev-word", NULL);
+	el_set(e, EL_BIND, "\\e[5C", "em-next-word", NULL);
+	el_set(e, EL_BIND, "\\e[5D", "ed-prev-word", NULL);
+	el_set(e, EL_BIND, "\\e\\e[C", "em-next-word", NULL);
+	el_set(e, EL_BIND, "\\e\\e[D", "ed-prev-word", NULL);
+
 	/* read settings from configuration file */
 	el_source(e, NULL);
 
@@ -305,15 +410,13 @@ rl_initialize(void)
 	 * Unfortunately, some applications really do use rl_point
 	 * and rl_line_buffer directly.
 	 */
-	li = el_line(e);
-	/* a cheesy way to get rid of const cast. */
-	rl_line_buffer = memchr(li->buffer, *li->buffer, 1);
+	_resize_fun(e, &rl_line_buffer);
 	_rl_update_pos();
 
 	if (rl_startup_hook)
 		(*rl_startup_hook)(NULL, 0);
 
-	return (0);
+	return 0;
 }
 
 
@@ -322,9 +425,10 @@ rl_initialize(void)
  * trailing newline (if there is any)
  */
 char *
-readline(const char *prompt)
+readline(const char *p)
 {
 	HistEvent ev;
+	const char * volatile prompt = p;
 	int count;
 	const char *ret;
 	char *buf;
@@ -335,15 +439,11 @@ readline(const char *prompt)
 
 	rl_done = 0;
 
+	(void)setjmp(topbuf);
+
 	/* update prompt accordingly to what has been passed */
-	if (!prompt)
-		prompt = "";
-	if (strcmp(rl_prompt, prompt) != 0) {
-		free(rl_prompt);
-		rl_prompt = strdup(prompt);
-		if (rl_prompt == NULL)
-			return NULL;
-	}
+	if (rl_set_prompt(prompt) == -1)
+		return NULL;
 
 	if (rl_pre_input_hook)
 		(*rl_pre_input_hook)(NULL, 0);
@@ -425,7 +525,7 @@ _rl_compat_sub(const char *str, const ch
 		} else
 			s++;
 	}
-	r = result = malloc(len + 1);
+	r = result = el_malloc((len + 1) * sizeof(*r));
 	if (result == NULL)
 		return NULL;
 	s = str;
@@ -436,13 +536,13 @@ _rl_compat_sub(const char *str, const ch
 			s += what_len;
 			if (!globally) {
 				(void)strcpy(r, s);
-				return(result);
+				return result;
 			}
 		} else
 			*r++ = *s++;
 	}
-	*r = 0;
-	return(result);
+	*r = '\0';
+	return result;
 }
 
 static	char	*last_search_pat;	/* last !?pat[?] search pattern */
@@ -459,14 +559,14 @@ get_history_event(const char *cmd, int *
 
 	idx = *cindex;
 	if (cmd[idx++] != history_expansion_char)
-		return(NULL);
+		return NULL;
 
 	/* find out which event to take */
-	if (cmd[idx] == history_expansion_char || cmd[idx] == 0) {
+	if (cmd[idx] == history_expansion_char || cmd[idx] == '\0') {
 		if (history(h, &ev, H_FIRST) != 0)
-			return(NULL);
+			return NULL;
 		*cindex = cmd[idx]? (idx + 1):idx;
-		return(ev.str);
+		return ev.str;
 	}
 	sign = 0;
 	if (cmd[idx] == '-') {
@@ -486,10 +586,10 @@ get_history_event(const char *cmd, int *
 			num = history_length - num + 1;
 
 		if (!(rl_he = history_get(num)))
-			return(NULL);
+			return NULL;
 
 		*cindex = idx;
-		return(rl_he->line);
+		return rl_he->line;
 	}
 	sub = 0;
 	if (cmd[idx] == '?') {
@@ -507,15 +607,15 @@ get_history_event(const char *cmd, int *
 			break;
 		idx++;
 	}
-	len = idx - begin;
+	len = (size_t)idx - (size_t)begin;
 	if (sub && cmd[idx] == '?')
 		idx++;
 	if (sub && len == 0 && last_search_pat && *last_search_pat)
 		pat = last_search_pat;
 	else if (len == 0)
-		return(NULL);
+		return NULL;
 	else {
-		if ((pat = malloc(len + 1)) == NULL)
+		if ((pat = el_malloc((len + 1) * sizeof(*pat))) == NULL)
 			return NULL;
 		(void)strncpy(pat, cmd + begin, len);
 		pat[len] = '\0';
@@ -523,15 +623,15 @@ get_history_event(const char *cmd, int *
 
 	if (history(h, &ev, H_CURR) != 0) {
 		if (pat != last_search_pat)
-			free(pat);
-		return (NULL);
+			el_free(pat);
+		return NULL;
 	}
 	num = ev.num;
 
 	if (sub) {
 		if (pat != last_search_pat) {
 			if (last_search_pat)
-				free(last_search_pat);
+				el_free(last_search_pat);
 			last_search_pat = pat;
 		}
 		ret = history_search(pat, -1);
@@ -543,21 +643,21 @@ get_history_event(const char *cmd, int *
 		history(h, &ev, H_FIRST);
 		(void)fprintf(rl_outstream, "%s: Event not found\n", pat);
 		if (pat != last_search_pat)
-			free(pat);
-		return(NULL);
+			el_free(pat);
+		return NULL;
 	}
 
 	if (sub && len) {
 		if (last_search_match && last_search_match != pat)
-			free(last_search_match);
+			el_free(last_search_match);
 		last_search_match = pat;
 	}
 
 	if (pat != last_search_pat)
-		free(pat);
+		el_free(pat);
 
 	if (history(h, &ev, H_CURR) != 0)
-		return(NULL);
+		return NULL;
 	*cindex = idx;
 	rptr = ev.str;
 
@@ -575,7 +675,7 @@ get_history_event(const char *cmd, int *
  * returns 0 if data was not modified, 1 if it was and 2 if the string
  * should be only printed and not executed; in case of error,
  * returns -1 and *result points to NULL
- * it's callers responsibility to free() string returned in *result
+ * it's the caller's responsibility to free() the string returned in *result
  */
 static int
 _history_expand_command(const char *command, size_t offs, size_t cmdlen,
@@ -609,7 +709,8 @@ _history_expand_command(const char *comm
 	} else {
 		if (command[offs + 1] == '#') {
 			/* use command so far */
-			if ((aptr = malloc(offs + 1)) == NULL)
+			if ((aptr = el_malloc((offs + 1) * sizeof(*aptr)))
+			    == NULL)
 				return -1;
 			(void)strncpy(aptr, command, offs);
 			aptr[offs] = '\0';
@@ -620,17 +721,19 @@ _history_expand_command(const char *comm
 			qchar = (offs > 0 && command[offs - 1] == '"')? '"':0;
 			ptr = get_history_event(command + offs, &idx, qchar);
 		}
-		has_mods = command[offs + idx] == ':';
+		has_mods = command[offs + (size_t)idx] == ':';
 	}
 
 	if (ptr == NULL && aptr == NULL)
-		return(-1);
+		return -1;
 
 	if (!has_mods) {
-		*result = strdup(aptr? aptr : ptr);
+		*result = strdup(aptr ? aptr : ptr);
 		if (aptr)
-			free(aptr);
-		return(1);
+			el_free(aptr);
+		if (*result == NULL)
+			return -1;
+		return 1;
 	}
 
 	cmd = command + offs + idx + 1;
@@ -675,18 +778,18 @@ _history_expand_command(const char *comm
 			(void)fprintf(rl_outstream, "%s: Bad word specifier",
 			    command + offs + idx);
 			if (aptr)
-				free(aptr);
-			return(-1);
+				el_free(aptr);
+			return -1;
 		}
 	} else
 		tmp = strdup(aptr? aptr:ptr);
 
 	if (aptr)
-		free(aptr);
+		el_free(aptr);
 
-	if (*cmd == 0 || (cmd - (command + offs) >= cmdlen)) {
+	if (*cmd == '\0' || ((size_t)(cmd - (command + offs)) >= cmdlen)) {
 		*result = tmp;
-		return(1);
+		return 1;
 	}
 
 	for (; *cmd; cmd++) {
@@ -694,20 +797,20 @@ _history_expand_command(const char *comm
 			continue;
 		else if (*cmd == 'h') {		/* remove trailing path */
 			if ((aptr = strrchr(tmp, '/')) != NULL)
-				*aptr = 0;
+				*aptr = '\0';
 		} else if (*cmd == 't') {	/* remove leading path */
 			if ((aptr = strrchr(tmp, '/')) != NULL) {
 				aptr = strdup(aptr + 1);
-				free(tmp);
+				el_free(tmp);
 				tmp = aptr;
 			}
 		} else if (*cmd == 'r') {	/* remove trailing suffix */
 			if ((aptr = strrchr(tmp, '.')) != NULL)
-				*aptr = 0;
+				*aptr = '\0';
 		} else if (*cmd == 'e') {	/* remove all but suffix */
 			if ((aptr = strrchr(tmp, '.')) != NULL) {
 				aptr = strdup(aptr);
-				free(tmp);
+				el_free(tmp);
 				tmp = aptr;
 			}
 		} else if (*cmd == 'p')		/* print only */
@@ -724,10 +827,10 @@ _history_expand_command(const char *comm
 			else if (*cmd == 's') {
 				delim = *(++cmd), cmd++;
 				size = 16;
-				what = realloc(from, size);
+				what = el_realloc(from, size * sizeof(*what));
 				if (what == NULL) {
-					free(from);
-					free(tmp);
+					el_free(from);
+					el_free(tmp);
 					return 0;
 				}
 				len = 0;
@@ -736,11 +839,12 @@ _history_expand_command(const char *comm
 						cmd++;
 					if (len >= size) {
 						char *nwhat;
-						nwhat = realloc(what,
-								(size <<= 1));
+						nwhat = el_realloc(what,
+						    (size <<= 1) *
+						    sizeof(*nwhat));
 						if (nwhat == NULL) {
-							free(what);
-							free(tmp);
+							el_free(what);
+							el_free(tmp);
 							return 0;
 						}
 						what = nwhat;
@@ -750,17 +854,17 @@ _history_expand_command(const char *comm
 				what[len] = '\0';
 				from = what;
 				if (*what == '\0') {
-					free(what);
+					el_free(what);
 					if (search) {
 						from = strdup(search);
 						if (from == NULL) {
-							free(tmp);
+							el_free(tmp);
 							return 0;
 						}
 					} else {
 						from = NULL;
-						free(tmp);
-						return (-1);
+						el_free(tmp);
+						return -1;
 					}
 				}
 				cmd++;	/* shift after delim */
@@ -768,10 +872,10 @@ _history_expand_command(const char *comm
 					continue;
 
 				size = 16;
-				with = realloc(to, size);
+				with = el_realloc(to, size * sizeof(*with));
 				if (with == NULL) {
-					free(to);
-					free(tmp);
+					el_free(to);
+					el_free(tmp);
 					return -1;
 				}
 				len = 0;
@@ -780,10 +884,11 @@ _history_expand_command(const char *comm
 					if (len + from_len + 1 >= size) {
 						char *nwith;
 						size += from_len + 1;
-						nwith = realloc(with, size);
+						nwith = el_realloc(with,
+						    size * sizeof(*nwith));
 						if (nwith == NULL) {
-							free(with);
-							free(tmp);
+							el_free(with);
+							el_free(tmp);
 							return -1;
 						}
 						with = nwith;
@@ -806,14 +911,14 @@ _history_expand_command(const char *comm
 
 			aptr = _rl_compat_sub(tmp, from, to, g_on);
 			if (aptr) {
-				free(tmp);
+				el_free(tmp);
 				tmp = aptr;
 			}
 			g_on = 0;
 		}
 	}
 	*result = tmp;
-	return (p_on? 2:1);
+	return p_on? 2:1;
 }
 
 
@@ -832,13 +937,13 @@ history_expand(char *str, char **output)
 
 	if (history_expansion_char == 0) {
 		*output = strdup(str);
-		return(0);
+		return 0;
 	}
 
 	*output = NULL;
 	if (str[0] == history_subst_char) {
 		/* ^foo^foo2^ is equivalent to !!:s^foo^foo2^ */
-		*output = malloc(strlen(str) + 4 + 1);
+		*output = el_malloc((strlen(str) + 4 + 1) * sizeof(**output));
 		if (*output == NULL)
 			return 0;
 		(*output)[0] = (*output)[1] = history_expansion_char;
@@ -855,11 +960,12 @@ history_expand(char *str, char **output)
 #define ADD_STRING(what, len, fr)					\
 	{								\
 		if (idx + len + 1 > size) {				\
-			char *nresult = realloc(result, (size += len + 1));\
+			char *nresult = el_realloc(result,		\
+			    (size += len + 1) * sizeof(*nresult));	\
 			if (nresult == NULL) {				\
-				free(*output);				\
+				el_free(*output);			\
 				if (/*CONSTCOND*/fr)			\
-					free(tmp);			\
+					el_free(tmp);			\
 				return 0;				\
 			}						\
 			result = nresult;				\
@@ -883,7 +989,8 @@ loop:
 		for (; str[j]; j++) {
 			if (str[j] == '\\' &&
 			    str[j + 1] == history_expansion_char) {
-				(void)strcpy(&str[j], &str[j + 1]);
+				len = strlen(&str[j + 1]) + 1;
+				memmove(&str[j], &str[j + 1], len);
 				continue;
 			}
 			if (!loop_again) {
@@ -926,7 +1033,7 @@ loop:
 			ADD_STRING(tmp, len, 1);
 		}
 		if (tmp) {
-			free(tmp);
+			el_free(tmp);
 			tmp = NULL;
 		}
 		i = j;
@@ -943,10 +1050,10 @@ loop:
 		ret = -1;
 #endif
 	}
-	free(*output);
+	el_free(*output);
 	*output = result;
 
-	return (ret);
+	return ret;
 }
 
 /*
@@ -956,52 +1063,52 @@ char *
 history_arg_extract(int start, int end, const char *str)
 {
 	size_t  i, len, max;
-	char	**arr, *result;
+	char	**arr, *result = NULL;
 
 	arr = history_tokenize(str);
 	if (!arr)
-		return(NULL);
-	if (arr && *arr == NULL) {
-		free(arr);
-		return(NULL);
-	}
+		return NULL;
+	if (arr && *arr == NULL)
+		goto out;
 
 	for (max = 0; arr[max]; max++)
 		continue;
 	max--;
 
 	if (start == '$')
-		start = max;
+		start = (int)max;
 	if (end == '$')
-		end = max;
+		end = (int)max;
 	if (end < 0)
-		end = max + end + 1;
+		end = (int)max + end + 1;
 	if (start < 0)
 		start = end;
 
-	if (start < 0 || end < 0 || start > max || end > max || start > end)
-		return(NULL);
+	if (start < 0 || end < 0 || (size_t)start > max ||
+	    (size_t)end > max || start > end)
+		goto out;
 
-	for (i = start, len = 0; i <= end; i++)
+	for (i = (size_t)start, len = 0; i <= (size_t)end; i++)
 		len += strlen(arr[i]) + 1;
 	len++;
-	result = malloc(len);
+	result = el_malloc(len * sizeof(*result));
 	if (result == NULL)
-		return NULL;
+		goto out;
 
-	for (i = start, len = 0; i <= end; i++) {
+	for (i = (size_t)start, len = 0; i <= (size_t)end; i++) {
 		(void)strcpy(result + len, arr[i]);
 		len += strlen(arr[i]);
-		if (i < end)
+		if (i < (size_t)end)
 			result[len++] = ' ';
 	}
-	result[len] = 0;
+	result[len] = '\0';
 
+out:
 	for (i = 0; arr[i]; i++)
-		free(arr[i]);
-	free(arr);
+		el_free(arr[i]);
+	el_free(arr);
 
-	return(result);
+	return result;
 }
 
 /*
@@ -1038,19 +1145,19 @@ history_tokenize(const char *str)
 		if (idx + 2 >= size) {
 			char **nresult;
 			size <<= 1;
-			nresult = realloc(result, size * sizeof(char *));
+			nresult = el_realloc(result, (size_t)size * sizeof(*nresult));
 			if (nresult == NULL) {
-				free(result);
+				el_free(result);
 				return NULL;
 			}
 			result = nresult;
 		}
-		len = i - start;
-		temp = malloc(len + 1);
+		len = (size_t)i - (size_t)start;
+		temp = el_malloc((size_t)(len + 1) * sizeof(*temp));
 		if (temp == NULL) {
 			for (i = 0; i < idx; i++)
-				free(result[i]);
-			free(result);
+				el_free(result[i]);
+			el_free(result);
 			return NULL;
 		}
 		(void)strncpy(temp, &str[start], len);
@@ -1060,7 +1167,7 @@ history_tokenize(const char *str)
 		if (str[i])
 			i++;
 	}
-	return (result);
+	return result;
 }
 
 
@@ -1071,12 +1178,24 @@ void
 stifle_history(int max)
 {
 	HistEvent ev;
+	HIST_ENTRY *he;
+	int i, len;
 
 	if (h == NULL || e == NULL)
 		rl_initialize();
 
-	if (history(h, &ev, H_SETSIZE, max) == 0)
+	len = history_length;
+	if (history(h, &ev, H_SETSIZE, max) == 0) {
 		max_input_history = max;
+		if (max < len)
+			history_base += len - max;
+		for (i = 0; i < len - max; i++) {
+			he = remove_history(i);
+			el_free(he->data);
+			el_free((void *)(unsigned long)he->line);
+			el_free(he);
+		}
+	}
 }
 
 
@@ -1092,7 +1211,7 @@ unstifle_history(void)
 	history(h, &ev, H_SETSIZE, INT_MAX);
 	omax = max_input_history;
 	max_input_history = INT_MAX;
-	return (omax);		/* some value _must_ be returned */
+	return omax;		/* some value _must_ be returned */
 }
 
 
@@ -1101,7 +1220,144 @@ history_is_stifled(void)
 {
 
 	/* cannot return true answer */
-	return (max_input_history != INT_MAX);
+	return max_input_history != INT_MAX;
+}
+
+static const char _history_tmp_template[] = "/tmp/.historyXXXXXX";
+
+int
+history_truncate_file (const char *filename, int nlines)
+{
+	int ret = 0;
+	FILE *fp, *tp;
+	char template[sizeof(_history_tmp_template)];
+	char buf[4096];
+	int fd;
+	char *cp;
+	off_t off;
+	int count = 0;
+	ssize_t left = 0;
+
+	if (filename == NULL && (filename = _default_history_file()) == NULL)
+		return errno;
+	if ((fp = fopen(filename, "r+")) == NULL)
+		return errno;
+	strcpy(template, _history_tmp_template);
+	if ((fd = mkstemp(template)) == -1) {
+		ret = errno;
+		goto out1;
+	}
+
+	if ((tp = fdopen(fd, "r+")) == NULL) {
+		close(fd);
+		ret = errno;
+		goto out2;
+	}
+
+	for(;;) {
+		if (fread(buf, sizeof(buf), (size_t)1, fp) != 1) {
+			if (ferror(fp)) {
+				ret = errno;
+				break;
+			}
+			if (fseeko(fp, (off_t)sizeof(buf) * count, SEEK_SET) ==
+			    (off_t)-1) {
+				ret = errno;
+				break;
+			}
+			left = (ssize_t)fread(buf, (size_t)1, sizeof(buf), fp);
+			if (ferror(fp)) {
+				ret = errno;
+				break;
+			}
+			if (left == 0) {
+				count--;
+				left = sizeof(buf);
+			} else if (fwrite(buf, (size_t)left, (size_t)1, tp)
+			    != 1) {
+				ret = errno;
+				break;
+			}
+			fflush(tp);
+			break;
+		}
+		if (fwrite(buf, sizeof(buf), (size_t)1, tp) != 1) {
+			ret = errno;
+			break;
+		}
+		count++;
+	}
+	if (ret)
+		goto out3;
+	cp = buf + left - 1;
+	if(*cp != '\n')
+		cp++;
+	for(;;) {
+		while (--cp >= buf) {
+			if (*cp == '\n') {
+				if (--nlines == 0) {
+					if (++cp >= buf + sizeof(buf)) {
+						count++;
+						cp = buf;
+					}
+					break;
+				}
+			}
+		}
+		if (nlines <= 0 || count == 0)
+			break;
+		count--;
+		if (fseeko(tp, (off_t)sizeof(buf) * count, SEEK_SET) < 0) {
+			ret = errno;
+			break;
+		}
+		if (fread(buf, sizeof(buf), (size_t)1, tp) != 1) {
+			if (ferror(tp)) {
+				ret = errno;
+				break;
+			}
+			ret = EAGAIN;
+			break;
+		}
+		cp = buf + sizeof(buf);
+	}
+
+	if (ret || nlines > 0)
+		goto out3;
+
+	if (fseeko(fp, (off_t)0, SEEK_SET) == (off_t)-1) {
+		ret = errno;
+		goto out3;
+	}
+
+	if (fseeko(tp, (off_t)sizeof(buf) * count + (cp - buf), SEEK_SET) ==
+	    (off_t)-1) {
+		ret = errno;
+		goto out3;
+	}
+
+	for(;;) {
+		if ((left = (ssize_t)fread(buf, (size_t)1, sizeof(buf), tp)) == 0) {
+			if (ferror(fp))
+				ret = errno;
+			break;
+		}
+		if (fwrite(buf, (size_t)left, (size_t)1, fp) != 1) {
+			ret = errno;
+			break;
+		}
+	}
+	fflush(fp);
+	if((off = ftello(fp)) > 0)
+		(void)ftruncate(fileno(fp), off);
+out3:
+	fclose(tp);
+out2:
+	unlink(template);
+out1:
+	fclose(fp);
+
+	return ret;
 }
 
 
@@ -1115,7 +1371,10 @@ read_history(const char *filename)
 
 	if (h == NULL || e == NULL)
 		rl_initialize();
-	return (history(h, &ev, H_LOAD, filename) == -1);
+	if (filename == NULL && (filename = _default_history_file()) == NULL)
+		return errno;
+	return history(h, &ev, H_LOAD, filename) == -1 ?
+	    (errno ? errno : EINVAL) : 0;
 }
 
 
@@ -1129,7 +1388,10 @@ write_history(const char *filename)
 
 	if (h == NULL || e == NULL)
 		rl_initialize();
-	return (history(h, &ev, H_SAVE, filename) == -1);
+	if (filename == NULL && (filename = _default_history_file()) == NULL)
+		return errno;
+	return history(h, &ev, H_SAVE, filename) == -1 ?
+	    (errno ? errno : EINVAL) : 0;
 }
 
 
@@ -1148,26 +1410,37 @@ history_get(int num)
 	if (h == NULL || e == NULL)
 		rl_initialize();
 
+	if (num < history_base)
+		return NULL;
+
 	/* save current position */
 	if (history(h, &ev, H_CURR) != 0)
-		return (NULL);
+		return NULL;
 	curr_num = ev.num;
 
-	/* start from most recent */
-	if (history(h, &ev, H_FIRST) != 0)
-		return (NULL);	/* error */
-
-	/* look backwards for event matching specified offset */
-	if (history(h, &ev, H_NEXT_EVENT, num))
-		return (NULL);
+	/*
+	 * use H_DELDATA to set to nth history (without delete) by passing
+	 * (void **)-1  -- as in history_set_pos
+	 */
+	if (history(h, &ev, H_DELDATA, num - history_base, (void **)-1) != 0)
+		goto out;
 
+	/* get current entry */
+	if (history(h, &ev, H_CURR) != 0)
+		goto out;
+	if (history(h, &ev, H_NEXT_EVDATA, ev.num, &she.data) != 0)
+		goto out;
 	she.line = ev.str;
-	she.data = NULL;
 
 	/* restore pointer to where it was */
 	(void)history(h, &ev, H_SET, curr_num);
 
-	return (&she);
+	return &she;
+
+out:
+	/* restore pointer to where it was */
+	(void)history(h, &ev, H_SET, curr_num);
+	return NULL;
 }
 
 
@@ -1179,14 +1452,18 @@ add_history(const char *line)
 {
 	HistEvent ev;
 
+	if (line == NULL)
+		return 0;
+
 	if (h == NULL || e == NULL)
 		rl_initialize();
 
 	(void)history(h, &ev, H_ENTER, line);
 	if (history(h, &ev, H_GETSIZE) == 0)
 		history_length = ev.num;
+	current_history_valid = 1;
 
-	return (!(history_length > 0)); /* return 0 if all is okay */
+	return !(history_length > 0); /* return 0 if all is okay */
 }
 
 
@@ -1196,23 +1473,75 @@ add_history(const char *line)
 HIST_ENTRY *
 remove_history(int num)
 {
-	static HIST_ENTRY she;
+	HIST_ENTRY *he;
 	HistEvent ev;
 
 	if (h == NULL || e == NULL)
 		rl_initialize();
 
-	if (history(h, &ev, H_DEL, num) != 0)
+	if ((he = el_malloc(sizeof(*he))) == NULL)
 		return NULL;
 
-	she.line = ev.str;
-	she.data = NULL;
+	if (history(h, &ev, H_DELDATA, num, &he->data) != 0) {
+		el_free(he);
+		return NULL;
+	}
 
-	return &she;
+	he->line = ev.str;
+	if (history(h, &ev, H_GETSIZE) == 0)
+		history_length = ev.num;
+
+	return he;
 }
 
 
 /*
+ * replace the line and data of the num-th entry
+ */
+HIST_ENTRY *
+replace_history_entry(int num, const char *line, histdata_t data)
+{
+	HIST_ENTRY *he;
+	HistEvent ev;
+	int curr_num;
+
+	if (h == NULL || e == NULL)
+		rl_initialize();
+
+	/* save current position */
+	if (history(h, &ev, H_CURR) != 0)
+		return NULL;
+	curr_num = ev.num;
+
+	/* start from the oldest */
+	if (history(h, &ev, H_LAST) != 0)
+		return NULL;	/* error */
+
+	if ((he = el_malloc(sizeof(*he))) == NULL)
+		return NULL;
+
+	/* look forwards for event matching specified offset */
+	if (history(h, &ev, H_NEXT_EVDATA, num, &he->data))
+		goto out;
+
+	he->line = strdup(ev.str);
+	if (he->line == NULL)
+		goto out;
+
+	if (history(h, &ev, H_REPLACE, line, data))
+		goto out;
+
+	/* restore pointer to where it was */
+	if (history(h, &ev, H_SET, curr_num))
+		goto out;
+
+	return he;
+out:
+	el_free(he);
+	return NULL;
+}
+
+/*
  * clear the history list - delete all entries
  */
 void
@@ -1220,7 +1549,12 @@ clear_history(void)
 {
 	HistEvent ev;
 
-	history(h, &ev, H_CLEAR);
+	if (h == NULL || e == NULL)
+		rl_initialize();
+
+	(void)history(h, &ev, H_CLEAR);
+	history_length = 0;
+	current_history_valid = 1;
 }
 
 
@@ -1234,15 +1568,15 @@ where_history(void)
 	int curr_num, off;
 
 	if (history(h, &ev, H_CURR) != 0)
-		return (0);
+		return 0;
 	curr_num = ev.num;
 
-	history(h, &ev, H_FIRST);
+	(void)history(h, &ev, H_FIRST);
 	off = 1;
 	while (ev.num != curr_num && history(h, &ev, H_NEXT) == 0)
 		off++;
 
-	return (off);
+	return off;
 }
 
 
@@ -1253,7 +1587,7 @@ HIST_ENTRY *
 current_history(void)
 {
 
-	return (_move_history(H_CURR));
+	return current_history_valid ? _move_history(H_CURR) : NULL;
 }
 
 
@@ -1264,22 +1598,23 @@ int
 history_total_bytes(void)
 {
 	HistEvent ev;
-	int curr_num, size;
+	int curr_num;
+	size_t size;
 
 	if (history(h, &ev, H_CURR) != 0)
-		return (-1);
+		return -1;
 	curr_num = ev.num;
 
-	history(h, &ev, H_FIRST);
+	(void)history(h, &ev, H_FIRST);
 	size = 0;
 	do
-		size += strlen(ev.str);
+		size += strlen(ev.str) * sizeof(*ev.str);
 	while (history(h, &ev, H_NEXT) == 0);
 
 	/* get to the same position as before */
 	history(h, &ev, H_PREV_EVENT, curr_num);
 
-	return (size);
+	return (int)size;
 }
 
 
@@ -1292,28 +1627,38 @@ history_set_pos(int pos)
 	HistEvent ev;
 	int curr_num;
 
-	if (pos > history_length || pos < 0)
-		return (-1);
+	if (pos >= history_length || pos < 0)
+		return 0;
 
-	history(h, &ev, H_CURR);
+	(void)history(h, &ev, H_CURR);
 	curr_num = ev.num;
+	current_history_valid = 1;
 
-	if (history(h, &ev, H_SET, pos)) {
-		history(h, &ev, H_SET, curr_num);
-		return(-1);
+	/*
+	 * use H_DELDATA to set to nth history (without delete) by passing
+	 * (void **)-1
+	 */
+	if (history(h, &ev, H_DELDATA, pos, (void **)-1)) {
+		(void)history(h, &ev, H_SET, curr_num);
+		return 0;
 	}
-	return (0);
+	return 1;
 }
 
 
 /*
  * returns previous event in history and shifts pointer accordingly
+ * Note that readline and editline define directions in opposite ways.
  */
 HIST_ENTRY *
 previous_history(void)
 {
 
-	return (_move_history(H_PREV));
+	if (current_history_valid == 0) {
+		current_history_valid = 1;
+		return _move_history(H_CURR);
+	}
+	return _move_history(H_NEXT);
 }
 
 
@@ -1323,8 +1668,12 @@ previous_history(void)
 HIST_ENTRY *
 next_history(void)
 {
+	HIST_ENTRY *he;
 
-	return (_move_history(H_NEXT));
+	he = _move_history(H_PREV);
+	if (he == NULL)
+		current_history_valid = 0;
+	return he;
 }
 
 
@@ -1339,17 +1688,17 @@ history_search(const char *str, int dire
 	int curr_num;
 
 	if (history(h, &ev, H_CURR) != 0)
-		return (-1);
+		return -1;
 	curr_num = ev.num;
 
 	for (;;) {
 		if ((strp = strstr(ev.str, str)) != NULL)
-			return (int) (strp - ev.str);
+			return (int)(strp - ev.str);
 		if (history(h, &ev, direction < 0 ? H_NEXT:H_PREV) != 0)
 			break;
 	}
-	history(h, &ev, H_SET, curr_num);
-	return (-1);
+	(void)history(h, &ev, H_SET, curr_num);
+	return -1;
 }
 
 
@@ -1361,7 +1710,8 @@ history_search_prefix(const char *str, i
 {
 	HistEvent ev;
 
-	return (history(h, &ev, direction < 0? H_PREV_STR:H_NEXT_STR, str));
+	return (history(h, &ev, direction < 0 ?
+	    H_PREV_STR : H_NEXT_STR, str));
 }
 
 
@@ -1381,24 +1731,24 @@ history_search_pos(const char *str,
 	pos = (pos > 0) ? 1 : -1;
 
 	if (history(h, &ev, H_CURR) != 0)
-		return (-1);
+		return -1;
 	curr_num = ev.num;
 
-	if (history_set_pos(off) != 0 || history(h, &ev, H_CURR) != 0)
-		return (-1);
-
+	if (!history_set_pos(off) || history(h, &ev, H_CURR) != 0)
+		return -1;
 
 	for (;;) {
 		if (strstr(ev.str, str))
-			return (off);
+			return off;
 		if (history(h, &ev, (pos < 0) ? H_PREV : H_NEXT) != 0)
 			break;
 	}
 
 	/* set "current" pointer back to previous state */
-	history(h, &ev, (pos < 0) ? H_NEXT_EVENT : H_PREV_EVENT, curr_num);
+	(void)history(h, &ev,
+	    pos < 0 ? H_NEXT_EVENT : H_PREV_EVENT, curr_num);
 
-	return (-1);
+	return -1;
 }
 
 
@@ -1421,17 +1771,20 @@ filename_completion_function(const char 
  * a completion generator for usernames; returns _first_ username
  * which starts with supplied text
  * text contains a partial username preceded by random character
- * (usually '~'); state is ignored
- * it's callers responsibility to free returned value
+ * (usually '~'); state resets search from start (??? should we do that anyway)
+ * it's the caller's responsibility to free the returned value
  */
 char *
 username_completion_function(const char *text, int state)
 {
-	struct passwd *pwd, pwres;
+#if defined(HAVE_GETPW_R_POSIX) || defined(HAVE_GETPW_R_DRAFT)
+	struct passwd pwres;
 	char pwbuf[1024];
+#endif
+	struct passwd *pass = NULL;
 
 	if (text[0] == '\0')
-		return (NULL);
+		return NULL;
 
 	if (*text == '~')
 		text++;
@@ -1439,15 +1792,21 @@ username_completion_function(const char 
 	if (state == 0)
 		setpwent();
 
-	while (getpwent_r(&pwres, pwbuf, sizeof(pwbuf), &pwd) == 0
-	    && pwd != NULL && text[0] == pwd->pw_name[0]
-	    && strcmp(text, pwd->pw_name) == 0);
+	while (
+#if defined(HAVE_GETPW_R_POSIX) || defined(HAVE_GETPW_R_DRAFT)
+	    getpwent_r(&pwres, pwbuf, sizeof(pwbuf), &pass) == 0 && pass != NULL
+#else
+	    (pass = getpwent()) != NULL
+#endif
+	    && text[0] == pass->pw_name[0]
+	    && strcmp(text, pass->pw_name) == 0)
+		continue;
 
-	if (pwd == NULL) {
+	if (pass == NULL) {
 		endpwent();
-		return (NULL);
+		return NULL;
 	}
-	return (strdup(pwd->pw_name));
+	return strdup(pass->pw_name);
 }
 
 
@@ -1471,7 +1830,7 @@ void
 rl_display_match_list(char **matches, int len, int max)
 {
 
-	fn_display_match_list(e, matches, len, max);
+	fn_display_match_list(e, matches, (size_t)len, (size_t)max);
 }
 
 static const char *
@@ -1480,7 +1839,8 @@ _rl_completion_append_character_function
     __attribute__((__unused__)))
 {
 	static char buf[2];
-	buf[1] = rl_completion_append_character;
+	buf[0] = (char)rl_completion_append_character;
+	buf[1] = '\0';
 	return buf;
 }
 
@@ -1492,6 +1852,9 @@ _rl_completion_append_character_function
 int
 rl_complete(int ignore __attribute__((__unused__)), int invoking_key)
 {
+	static ct_buffer_t wbreak_conv, sprefix_conv;
+	char *breakchars;
+
 	if (h == NULL || e == NULL)
 		rl_initialize();
 
@@ -1500,17 +1863,28 @@ rl_complete(int ignore __attribute__((__
 		arr[0] = (char)invoking_key;
 		arr[1] = '\0';
 		el_insertstr(e, arr);
-		return (CC_REFRESH);
+		return CC_REFRESH;
 	}
 
+	if (rl_completion_word_break_hook != NULL)
+		breakchars = (*rl_completion_word_break_hook)();
+	else
+		breakchars = rl_basic_word_break_characters;
+
+	_rl_update_pos();
+
 	/* Just look at how many global variables modify this operation! */
 	return fn_complete(e,
-	    (CPFunction *)rl_completion_entry_function,
+	    (rl_compentry_func_t *)rl_completion_entry_function,
 	    rl_attempted_completion_function,
-	    rl_basic_word_break_characters, rl_special_prefixes,
-	    _rl_completion_append_character_function, rl_completion_query_items,
+	    ct_decode_string(rl_basic_word_break_characters, &wbreak_conv),
+	    ct_decode_string(breakchars, &sprefix_conv),
+	    _rl_completion_append_character_function,
+	    (size_t)rl_completion_query_items,
 	    &rl_completion_type, &rl_attempted_completion_over,
 	    &rl_point, &rl_end);
+
+
 }
 
 
@@ -1529,7 +1903,7 @@ _el_rl_complete(EditLine *el __attribute
  * bind key c to readline-type function func
  */
 int
-rl_bind_key(int c, int func(int, int))
+rl_bind_key(int c, rl_command_func_t *func)
 {
 	int retval = -1;
 
@@ -1541,7 +1915,7 @@ rl_bind_key(int c, int func(int, int))
 		e->el_map.key[c] = ED_INSERT;
 		retval = 0;
 	}
-	return (retval);
+	return retval;
 }
 
 
@@ -1557,7 +1931,7 @@ rl_read_key(void)
 	if (e == NULL || h == NULL)
 		rl_initialize();
 
-	return (el_getc(e, fooarr));
+	return el_getc(e, fooarr);
 }
 
 
@@ -1587,18 +1961,33 @@ rl_insert(int count, int c)
 		rl_initialize();
 
 	/* XXX - int -> char conversion can lose on multichars */
-	arr[0] = c;
+	arr[0] = (char)c;
 	arr[1] = '\0';
 
 	for (; count > 0; count--)
 		el_push(e, arr);
 
-	return (0);
+	return 0;
+}
+
+int
+rl_insert_text(const char *text)
+{
+	if (!text || *text == 0)
+		return 0;
+
+	if (h == NULL || e == NULL)
+		rl_initialize();
+
+	if (el_insertstr(e, text) < 0)
+		return 0;
+	return (int)strlen(text);
 }
 
 /*ARGSUSED*/
 int
-rl_newline(int count, int c)
+rl_newline(int count __attribute__((__unused__)),
+    int c __attribute__((__unused__)))
 {
 	/*
 	 * Readline-4.0 appears to ignore the args.
@@ -1608,14 +1997,14 @@ rl_newline(int count, int c)
 
 /*ARGSUSED*/
 static unsigned char
-rl_bind_wrapper(EditLine *el, unsigned char c)
+rl_bind_wrapper(EditLine *el __attribute__((__unused__)), unsigned char c)
 {
 	if (map[c] == NULL)
 	    return CC_ERROR;
 
 	_rl_update_pos();
 
-	(*map[c])(NULL, c);
+	(*map[c])(1, c);
 
 	/* If rl_done was set by the above call, deal with it here */
 	if (rl_done)
@@ -1625,20 +2014,20 @@ rl_bind_wrapper(EditLine *el, unsigned c
 }
 
 int
-rl_add_defun(const char *name, Function *fun, int c)
+rl_add_defun(const char *name, rl_command_func_t *fun, int c)
 {
 	char dest[8];
-	if (c >= sizeof(map) / sizeof(map[0]) || c < 0)
+	if ((size_t)c >= sizeof(map) / sizeof(map[0]) || c < 0)
 		return -1;
 	map[(unsigned char)c] = fun;
 	el_set(e, EL_ADDFN, name, name, rl_bind_wrapper);
 	vis(dest, c, VIS_WHITE|VIS_NOSLASH, 0);
-	el_set(e, EL_BIND, dest, name);
+	el_set(e, EL_BIND, dest, name, NULL);
 	return 0;
 }
 
 void
-rl_callback_read_char()
+rl_callback_read_char(void)
 {
 	int count = 0, done = 0;
 	const char *buf = el_gets(e, &count);
@@ -1663,30 +2052,29 @@ rl_callback_read_char()
 	}
 }
 
-void 
-rl_callback_handler_install (const char *prompt, VCPFunction *linefunc)
+void
+rl_callback_handler_install(const char *prompt, rl_vcpfunc_t *linefunc)
 {
 	if (e == NULL) {
 		rl_initialize();
 	}
-	if (rl_prompt)
-		free(rl_prompt);
-	rl_prompt = prompt ? strdup(strchr(prompt, *prompt)) : NULL;
+	(void)rl_set_prompt(prompt);
 	rl_linefunc = linefunc;
 	el_set(e, EL_UNBUFFERED, 1);
-}   
+}
 
-void 
+void
 rl_callback_handler_remove(void)
 {
 	el_set(e, EL_UNBUFFERED, 0);
+	rl_linefunc = NULL;
 }
 
 void
 rl_redisplay(void)
 {
 	char a[2];
-	a[0] = e->el_tty.t_c[TS_IO][C_REPRINT];
+	a[0] = (char)e->el_tty.t_c[TS_IO][C_REPRINT];
 	a[1] = '\0';
 	el_push(e, a);
 }
@@ -1695,7 +2083,7 @@ int
 rl_get_previous_history(int count, int key)
 {
 	char a[2];
-	a[0] = key;
+	a[0] = (char)key;
 	a[1] = '\0';
 	while (count--)
 		el_push(e, a);
@@ -1704,7 +2092,7 @@ rl_get_previous_history(int count, int k
 
 void
 /*ARGSUSED*/
-rl_prep_terminal(int meta_flag)
+rl_prep_terminal(int meta_flag __attribute__((__unused__)))
 {
 	el_set(e, EL_PREP_TERM, 1);
 }
@@ -1718,7 +2106,7 @@ rl_deprep_terminal(void)
 int
 rl_read_init_file(const char *s)
 {
-	return(el_source(e, s));
+	return el_source(e, s);
 }
 
 int
@@ -1732,7 +2120,7 @@ rl_parse_and_bind(const char *line)
 	tok_str(tok, line, &argc, &argv);
 	argc = el_parse(e, argc, argv);
 	tok_end(tok);
-	return (argc ? 1 : 0);
+	return argc ? 1 : 0;
 }
 
 int
@@ -1742,7 +2130,7 @@ rl_variable_bind(const char *var, const 
 	 * The proper return value is undocument, but this is what the
 	 * readline source seems to do.
 	 */
-	return ((el_set(e, EL_BIND, "", var, value) == -1) ? 1 : 0);
+	return el_set(e, EL_BIND, "", var, value, NULL) == -1 ? 1 : 0;
 }
 
 void
@@ -1750,40 +2138,43 @@ rl_stuff_char(int c)
 {
 	char buf[2];
 
-	buf[0] = c;
+	buf[0] = (char)c;
 	buf[1] = '\0';
 	el_insertstr(e, buf);
 }
 
 static int
-_rl_event_read_char(EditLine *el, char *cp)
+_rl_event_read_char(EditLine *el, wchar_t *wc)
 {
-	int	n, num_read = 0;
+	char	ch;
+	int	n;
+	ssize_t num_read = 0;
 
-	*cp = 0;
+	ch = '\0';
+	*wc = L'\0';
 	while (rl_event_hook) {
 
 		(*rl_event_hook)();
 
 #if defined(FIONREAD)
 		if (ioctl(el->el_infd, FIONREAD, &n) < 0)
-			return(-1);
+			return -1;
 		if (n)
-			num_read = read(el->el_infd, cp, 1);
+			num_read = read(el->el_infd, &ch, (size_t)1);
 		else
 			num_read = 0;
 #elif defined(F_SETFL) && defined(O_NDELAY)
 		if ((n = fcntl(el->el_infd, F_GETFL, 0)) < 0)
-			return(-1);
+			return -1;
 		if (fcntl(el->el_infd, F_SETFL, n|O_NDELAY) < 0)
-			return(-1);
-		num_read = read(el->el_infd, cp, 1);
+			return -1;
+		num_read = read(el->el_infd, &ch, 1);
 		if (fcntl(el->el_infd, F_SETFL, n))
-			return(-1);
+			return -1;
 #else
 		/* not non-blocking, but what you gonna do? */
-		num_read = read(el->el_infd, cp, 1);
-		return(-1);
+		num_read = read(el->el_infd, &ch, 1);
+		return -1;
 #endif
 
 		if (num_read < 0 && errno == EAGAIN)
@@ -1794,7 +2185,8 @@ _rl_event_read_char(EditLine *el, char *
 	}
 	if (!rl_event_hook)
 		el_set(el, EL_GETCFN, EL_BUILTIN_GETCFN);
-	return(num_read);
+	*wc = (wchar_t)ch;
+	return (int)num_read;
 }
 
 static void
@@ -1802,6 +2194,186 @@ _rl_update_pos(void)
 {
 	const LineInfo *li = el_line(e);
 
-	rl_point = li->cursor - li->buffer;
-	rl_end = li->lastchar - li->buffer;
+	rl_point = (int)(li->cursor - li->buffer);
+	rl_end = (int)(li->lastchar - li->buffer);
+}
+
+void
+rl_get_screen_size(int *rows, int *cols)
+{
+	if (rows)
+		el_get(e, EL_GETTC, "li", rows, (void *)0);
+	if (cols)
+		el_get(e, EL_GETTC, "co", cols, (void *)0);
+}
+
+void
+rl_set_screen_size(int rows, int cols)
+{
+	char buf[64];
+	(void)snprintf(buf, sizeof(buf), "%d", rows);
+	el_set(e, EL_SETTC, "li", buf, NULL);
+	(void)snprintf(buf, sizeof(buf), "%d", cols);
+	el_set(e, EL_SETTC, "co", buf, NULL);
+}
+
+char **
+rl_completion_matches(const char *str, rl_compentry_func_t *fun)
+{
+	size_t len, max, i, j, min;
+	char **list, *match, *a, *b;
+
+	len = 1;
+	max = 10;
+	if ((list = el_malloc(max * sizeof(*list))) == NULL)
+		return NULL;
+
+	while ((match = (*fun)(str, (int)(len - 1))) != NULL) {
+		list[len++] = match;
+		if (len == max) {
+			char **nl;
+			max += 10;
+			if ((nl = el_realloc(list, max * sizeof(*nl))) == NULL)
+				goto out;
+			list = nl;
+		}
+	}
+	if (len == 1)
+		goto out;
+	list[len] = NULL;
+	if (len == 2) {
+		if ((list[0] = strdup(list[1])) == NULL)
+			goto out;
+		return list;
+	}
+	qsort(&list[1], len - 1, sizeof(*list),
+	    (int (*)(const void *, const void *)) strcmp);
+	min = SIZE_MAX;
+	for (i = 1, a = list[i]; i < len - 1; i++, a = b) {
+		b = list[i + 1];
+		for (j = 0; a[j] && a[j] == b[j]; j++)
+			continue;
+		if (min > j)
+			min = j;
+	}
+	if (min == 0 && *str) {
+		if ((list[0] = strdup(str)) == NULL)
+			goto out;
+	} else {
+		if ((list[0] = el_malloc((min + 1) * sizeof(*list[0]))) == NULL)
+			goto out;
+		(void)memcpy(list[0], list[1], min);
+		list[0][min] = '\0';
+	}
+	return list;
+
+out:
+	el_free(list);
+	return NULL;
+}
+
+char *
+rl_filename_completion_function (const char *text, int state)
+{
+	return fn_filename_completion_function(text, state);
+}
+
+void
+rl_forced_update_display(void)
+{
+	el_set(e, EL_REFRESH);
+}
+
+int
+_rl_abort_internal(void)
+{
+	el_beep(e);
+	longjmp(topbuf, 1);
+	/*NOTREACHED*/
+}
+
+int
+_rl_qsort_string_compare(char **s1, char **s2)
+{
+	return strcoll(*s1, *s2);
+}
+
+HISTORY_STATE *
+history_get_history_state(void)
+{
+	HISTORY_STATE *hs;
+
+	if ((hs = el_malloc(sizeof(*hs))) == NULL)
+		return NULL;
+	hs->length = history_length;
+	return hs;
+}
+
+int
+/*ARGSUSED*/
+rl_kill_text(int from __attribute__((__unused__)),
+    int to __attribute__((__unused__)))
+{
+	return 0;
+}
+
+Keymap
+rl_make_bare_keymap(void)
+{
+	return NULL;
+}
+
+Keymap
+rl_get_keymap(void)
+{
+	return NULL;
+}
+
+void
+/*ARGSUSED*/
+rl_set_keymap(Keymap k __attribute__((__unused__)))
+{
+}
+
+int
+/*ARGSUSED*/
+rl_generic_bind(int type __attribute__((__unused__)),
+    const char * keyseq __attribute__((__unused__)),
+    const char * data __attribute__((__unused__)),
+    Keymap k __attribute__((__unused__)))
+{
+	return 0;
+}
+
+int
+/*ARGSUSED*/
+rl_bind_key_in_map(int key __attribute__((__unused__)),
+    rl_command_func_t *fun __attribute__((__unused__)),
+    Keymap k __attribute__((__unused__)))
+{
+	return 0;
+}
+
+/* unsupported, but needed by python */
+void
+rl_cleanup_after_signal(void)
+{
+}
+
+int
+rl_on_new_line(void)
+{
+	return 0;
+}
+
+void
+rl_free_line_state(void)
+{
+}
+
+int
+/*ARGSUSED*/
+rl_set_keyboard_input_timeout(int u __attribute__((__unused__)))
+{
+	return 0;
 }