Update libedit to a snapshot from 2019-09-10

This version bring many fixes regarding unicode support
It also adds proper support for filename completion (we do not need our custom
patches anymore)
Improves the libreadline compatibility

Note that the same work was done by Yuichiro Naito in
https://reviews.freebsd.org/D21196 the main difference is in this case we have
reimported libedit in contrib to fix a long standing mess in the previous merges
which prevented a proper update workflow. (discussed long ago with pfg@)

The only difference with upstream libedit is we have added a compatibility shim
for the _elf_fn_sh_complete function which we previously added to support quoting
in filename completion and is not needed anymore.
This was added to continue supported old /bin/sh binaries and not break backward
compatibility (as discussed with jilles@)

Reviewed by:	Yuichiro Naito <naito.yuichiro_gmail.com>
MFC after:	3 weeks
Differential Revision:	https://reviews.freebsd.org/D21584

1 files changed, 0 insertions, 777 deletions

diff --git a/lib/libedit/chared.c b/lib/libedit/chared.c
deleted file mode 100644
index 9ec618e60cb5..000000000000
--- a/lib/libedit/chared.c
+++ /dev/null
@@ -1,777 +0,0 @@
-/*	$NetBSD: chared.c,v 1.49 2016/02/24 14:29:21 christos Exp $	*/
-
-/*-
- * Copyright (c) 1992, 1993
- *	The Regents of the University of California.  All rights reserved.
- *
- * This code is derived from software contributed to Berkeley by
- * Christos Zoulas of Cornell University.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 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 University 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 REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-#include "config.h"
-#if !defined(lint) && !defined(SCCSID)
-#if 0
-static char sccsid[] = "@(#)chared.c	8.1 (Berkeley) 6/4/93";
-#else
-__RCSID("$NetBSD: chared.c,v 1.49 2016/02/24 14:29:21 christos Exp $");
-#endif
-#endif /* not lint && not SCCSID */
-#include <sys/cdefs.h>
-__FBSDID("$FreeBSD$");
-
-/*
- * chared.c: Character editor utilities
- */
-#include <ctype.h>
-#include <stdlib.h>
-#include <string.h>
-
-#include "el.h"
-#include "common.h"
-
-private void ch__clearmacro (EditLine *);
-
-/* value to leave unused in line buffer */
-#define	EL_LEAVE	2
-
-/* cv_undo():
- *	Handle state for the vi undo command
- */
-protected void
-cv_undo(EditLine *el)
-{
-	c_undo_t *vu = &el->el_chared.c_undo;
-	c_redo_t *r = &el->el_chared.c_redo;
-	size_t size;
-
-	/* Save entire line for undo */
-	size = (size_t)(el->el_line.lastchar - el->el_line.buffer);
-	vu->len = (ssize_t)size;
-	vu->cursor = (int)(el->el_line.cursor - el->el_line.buffer);
-	(void)memcpy(vu->buf, el->el_line.buffer, size * sizeof(*vu->buf));
-
-	/* save command info for redo */
-	r->count = el->el_state.doingarg ? el->el_state.argument : 0;
-	r->action = el->el_chared.c_vcmd.action;
-	r->pos = r->buf;
-	r->cmd = el->el_state.thiscmd;
-	r->ch = el->el_state.thisch;
-}
-
-/* cv_yank():
- *	Save yank/delete data for paste
- */
-protected void
-cv_yank(EditLine *el, const Char *ptr, int size)
-{
-	c_kill_t *k = &el->el_chared.c_kill;
-
-	(void)memcpy(k->buf, ptr, (size_t)size * sizeof(*k->buf));
-	k->last = k->buf + size;
-}
-
-
-/* c_insert():
- *	Insert num characters
- */
-protected void
-c_insert(EditLine *el, int num)
-{
-	Char *cp;
-
-	if (el->el_line.lastchar + num >= el->el_line.limit) {
-		if (!ch_enlargebufs(el, (size_t)num))
-			return;		/* can't go past end of buffer */
-	}
-
-	if (el->el_line.cursor < el->el_line.lastchar) {
-		/* if I must move chars */
-		for (cp = el->el_line.lastchar; cp >= el->el_line.cursor; cp--)
-			cp[num] = *cp;
-	}
-	el->el_line.lastchar += num;
-}
-
-
-/* c_delafter():
- *	Delete num characters after the cursor
- */
-protected void
-c_delafter(EditLine *el, int num)
-{
-
-	if (el->el_line.cursor + num > el->el_line.lastchar)
-		num = (int)(el->el_line.lastchar - el->el_line.cursor);
-
-	if (el->el_map.current != el->el_map.emacs) {
-		cv_undo(el);
-		cv_yank(el, el->el_line.cursor, num);
-	}
-
-	if (num > 0) {
-		Char *cp;
-
-		for (cp = el->el_line.cursor; cp <= el->el_line.lastchar; cp++)
-			*cp = cp[num];
-
-		el->el_line.lastchar -= num;
-	}
-}
-
-
-/* c_delafter1():
- *	Delete the character after the cursor, do not yank
- */
-protected void
-c_delafter1(EditLine *el)
-{
-	Char *cp;
-
-	for (cp = el->el_line.cursor; cp <= el->el_line.lastchar; cp++)
-		*cp = cp[1];
-
-	el->el_line.lastchar--;
-}
-
-
-/* c_delbefore():
- *	Delete num characters before the cursor
- */
-protected void
-c_delbefore(EditLine *el, int num)
-{
-
-	if (el->el_line.cursor - num < el->el_line.buffer)
-		num = (int)(el->el_line.cursor - el->el_line.buffer);
-
-	if (el->el_map.current != el->el_map.emacs) {
-		cv_undo(el);
-		cv_yank(el, el->el_line.cursor - num, num);
-	}
-
-	if (num > 0) {
-		Char *cp;
-
-		for (cp = el->el_line.cursor - num;
-		    cp <= el->el_line.lastchar;
-		    cp++)
-			*cp = cp[num];
-
-		el->el_line.lastchar -= num;
-	}
-}
-
-
-/* c_delbefore1():
- *	Delete the character before the cursor, do not yank
- */
-protected void
-c_delbefore1(EditLine *el)
-{
-	Char *cp;
-
-	for (cp = el->el_line.cursor - 1; cp <= el->el_line.lastchar; cp++)
-		*cp = cp[1];
-
-	el->el_line.lastchar--;
-}
-
-
-/* ce__isword():
- *	Return if p is part of a word according to emacs
- */
-protected int
-ce__isword(wint_t p)
-{
-	return Isalnum(p) || Strchr(STR("*?_-.[]~="), p) != NULL;
-}
-
-
-/* cv__isword():
- *	Return if p is part of a word according to vi
- */
-protected int
-cv__isword(wint_t p)
-{
-	if (Isalnum(p) || p == '_')
-		return 1;
-	if (Isgraph(p))
-		return 2;
-	return 0;
-}
-
-
-/* cv__isWord():
- *	Return if p is part of a big word according to vi
- */
-protected int
-cv__isWord(wint_t p)
-{
-	return !Isspace(p);
-}
-
-
-/* c__prev_word():
- *	Find the previous word
- */
-protected Char *
-c__prev_word(Char *p, Char *low, int n, int (*wtest)(wint_t))
-{
-	p--;
-
-	while (n--) {
-		while ((p >= low) && !(*wtest)(*p))
-			p--;
-		while ((p >= low) && (*wtest)(*p))
-			p--;
-	}
-
-	/* cp now points to one character before the word */
-	p++;
-	if (p < low)
-		p = low;
-	/* cp now points where we want it */
-	return p;
-}
-
-
-/* c__next_word():
- *	Find the next word
- */
-protected Char *
-c__next_word(Char *p, Char *high, int n, int (*wtest)(wint_t))
-{
-	while (n--) {
-		while ((p < high) && !(*wtest)(*p))
-			p++;
-		while ((p < high) && (*wtest)(*p))
-			p++;
-	}
-	if (p > high)
-		p = high;
-	/* p now points where we want it */
-	return p;
-}
-
-/* cv_next_word():
- *	Find the next word vi style
- */
-protected Char *
-cv_next_word(EditLine *el, Char *p, Char *high, int n, int (*wtest)(wint_t))
-{
-	int test;
-
-	while (n--) {
-		test = (*wtest)(*p);
-		while ((p < high) && (*wtest)(*p) == test)
-			p++;
-		/*
-		 * vi historically deletes with cw only the word preserving the
-		 * trailing whitespace! This is not what 'w' does..
-		 */
-		if (n || el->el_chared.c_vcmd.action != (DELETE|INSERT))
-			while ((p < high) && Isspace(*p))
-				p++;
-	}
-
-	/* p now points where we want it */
-	if (p > high)
-		return high;
-	else
-		return p;
-}
-
-
-/* cv_prev_word():
- *	Find the previous word vi style
- */
-protected Char *
-cv_prev_word(Char *p, Char *low, int n, int (*wtest)(wint_t))
-{
-	int test;
-
-	p--;
-	while (n--) {
-		while ((p > low) && Isspace(*p))
-			p--;
-		test = (*wtest)(*p);
-		while ((p >= low) && (*wtest)(*p) == test)
-			p--;
-	}
-	p++;
-
-	/* p now points where we want it */
-	if (p < low)
-		return low;
-	else
-		return p;
-}
-
-
-/* cv_delfini():
- *	Finish vi delete action
- */
-protected void
-cv_delfini(EditLine *el)
-{
-	int size;
-	int action = el->el_chared.c_vcmd.action;
-
-	if (action & INSERT)
-		el->el_map.current = el->el_map.key;
-
-	if (el->el_chared.c_vcmd.pos == 0)
-		/* sanity */
-		return;
-
-	size = (int)(el->el_line.cursor - el->el_chared.c_vcmd.pos);
-	if (size == 0)
-		size = 1;
-	el->el_line.cursor = el->el_chared.c_vcmd.pos;
-	if (action & YANK) {
-		if (size > 0)
-			cv_yank(el, el->el_line.cursor, size);
-		else
-			cv_yank(el, el->el_line.cursor + size, -size);
-	} else {
-		if (size > 0) {
-			c_delafter(el, size);
-			re_refresh_cursor(el);
-		} else  {
-			c_delbefore(el, -size);
-			el->el_line.cursor += size;
-		}
-	}
-	el->el_chared.c_vcmd.action = NOP;
-}
-
-
-/* cv__endword():
- *	Go to the end of this word according to vi
- */
-protected Char *
-cv__endword(Char *p, Char *high, int n, int (*wtest)(wint_t))
-{
-	int test;
-
-	p++;
-
-	while (n--) {
-		while ((p < high) && Isspace(*p))
-			p++;
-
-		test = (*wtest)(*p);
-		while ((p < high) && (*wtest)(*p) == test)
-			p++;
-	}
-	p--;
-	return p;
-}
-
-/* ch_init():
- *	Initialize the character editor
- */
-protected int
-ch_init(EditLine *el)
-{
-	c_macro_t *ma = &el->el_chared.c_macro;
-
-	el->el_line.buffer		= el_malloc(EL_BUFSIZ *
-	    sizeof(*el->el_line.buffer));
-	if (el->el_line.buffer == NULL)
-		return -1;
-
-	(void) memset(el->el_line.buffer, 0, EL_BUFSIZ *
-	    sizeof(*el->el_line.buffer));
-	el->el_line.cursor		= el->el_line.buffer;
-	el->el_line.lastchar		= el->el_line.buffer;
-	el->el_line.limit		= &el->el_line.buffer[EL_BUFSIZ - EL_LEAVE];
-
-	el->el_chared.c_undo.buf	= el_malloc(EL_BUFSIZ *
-	    sizeof(*el->el_chared.c_undo.buf));
-	if (el->el_chared.c_undo.buf == NULL)
-		return -1;
-	(void) memset(el->el_chared.c_undo.buf, 0, EL_BUFSIZ *
-	    sizeof(*el->el_chared.c_undo.buf));
-	el->el_chared.c_undo.len	= -1;
-	el->el_chared.c_undo.cursor	= 0;
-	el->el_chared.c_redo.buf	= el_malloc(EL_BUFSIZ *
-	    sizeof(*el->el_chared.c_redo.buf));
-	if (el->el_chared.c_redo.buf == NULL)
-		return -1;
-	el->el_chared.c_redo.pos	= el->el_chared.c_redo.buf;
-	el->el_chared.c_redo.lim	= el->el_chared.c_redo.buf + EL_BUFSIZ;
-	el->el_chared.c_redo.cmd	= ED_UNASSIGNED;
-
-	el->el_chared.c_vcmd.action	= NOP;
-	el->el_chared.c_vcmd.pos	= el->el_line.buffer;
-
-	el->el_chared.c_kill.buf	= el_malloc(EL_BUFSIZ *
-	    sizeof(*el->el_chared.c_kill.buf));
-	if (el->el_chared.c_kill.buf == NULL)
-		return -1;
-	(void) memset(el->el_chared.c_kill.buf, 0, EL_BUFSIZ *
-	    sizeof(*el->el_chared.c_kill.buf));
-	el->el_chared.c_kill.mark	= el->el_line.buffer;
-	el->el_chared.c_kill.last	= el->el_chared.c_kill.buf;
-	el->el_chared.c_resizefun	= NULL;
-	el->el_chared.c_resizearg	= NULL;
-	el->el_chared.c_aliasfun	= NULL;
-	el->el_chared.c_aliasarg	= NULL;
-
-	el->el_map.current		= el->el_map.key;
-
-	el->el_state.inputmode		= MODE_INSERT; /* XXX: save a default */
-	el->el_state.doingarg		= 0;
-	el->el_state.metanext		= 0;
-	el->el_state.argument		= 1;
-	el->el_state.lastcmd		= ED_UNASSIGNED;
-
-	ma->level	= -1;
-	ma->offset	= 0;
-	ma->macro	= el_malloc(EL_MAXMACRO * sizeof(*ma->macro));
-	if (ma->macro == NULL)
-		return -1;
-	return 0;
-}
-
-/* ch_reset():
- *	Reset the character editor
- */
-protected void
-ch_reset(EditLine *el, int mclear)
-{
-	el->el_line.cursor		= el->el_line.buffer;
-	el->el_line.lastchar		= el->el_line.buffer;
-
-	el->el_chared.c_undo.len	= -1;
-	el->el_chared.c_undo.cursor	= 0;
-
-	el->el_chared.c_vcmd.action	= NOP;
-	el->el_chared.c_vcmd.pos	= el->el_line.buffer;
-
-	el->el_chared.c_kill.mark	= el->el_line.buffer;
-
-	el->el_map.current		= el->el_map.key;
-
-	el->el_state.inputmode		= MODE_INSERT; /* XXX: save a default */
-	el->el_state.doingarg		= 0;
-	el->el_state.metanext		= 0;
-	el->el_state.argument		= 1;
-	el->el_state.lastcmd		= ED_UNASSIGNED;
-
-	el->el_history.eventno		= 0;
-
-	if (mclear)
-		ch__clearmacro(el);
-}
-
-private void
-ch__clearmacro(EditLine *el)
-{
-	c_macro_t *ma = &el->el_chared.c_macro;
-	while (ma->level >= 0)
-		el_free(ma->macro[ma->level--]);
-}
-
-/* ch_enlargebufs():
- *	Enlarge line buffer to be able to hold twice as much characters.
- *	Returns 1 if successful, 0 if not.
- */
-protected int
-ch_enlargebufs(EditLine *el, size_t addlen)
-{
-	size_t sz, newsz;
-	Char *newbuffer, *oldbuf, *oldkbuf;
-
-	sz = (size_t)(el->el_line.limit - el->el_line.buffer + EL_LEAVE);
-	newsz = sz * 2;
-	/*
-	 * If newly required length is longer than current buffer, we need
-	 * to make the buffer big enough to hold both old and new stuff.
-	 */
-	if (addlen > sz) {
-		while(newsz - sz < addlen)
-			newsz *= 2;
-	}
-
-	/*
-	 * Reallocate line buffer.
-	 */
-	newbuffer = el_realloc(el->el_line.buffer, newsz * sizeof(*newbuffer));
-	if (!newbuffer)
-		return 0;
-
-	/* zero the newly added memory, leave old data in */
-	(void) memset(&newbuffer[sz], 0, (newsz - sz) * sizeof(*newbuffer));
-
-	oldbuf = el->el_line.buffer;
-
-	el->el_line.buffer = newbuffer;
-	el->el_line.cursor = newbuffer + (el->el_line.cursor - oldbuf);
-	el->el_line.lastchar = newbuffer + (el->el_line.lastchar - oldbuf);
-	/* don't set new size until all buffers are enlarged */
-	el->el_line.limit  = &newbuffer[sz - EL_LEAVE];
-
-	/*
-	 * Reallocate kill buffer.
-	 */
-	newbuffer = el_realloc(el->el_chared.c_kill.buf, newsz *
-	    sizeof(*newbuffer));
-	if (!newbuffer)
-		return 0;
-
-	/* zero the newly added memory, leave old data in */
-	(void) memset(&newbuffer[sz], 0, (newsz - sz) * sizeof(*newbuffer));
-
-	oldkbuf = el->el_chared.c_kill.buf;
-
-	el->el_chared.c_kill.buf = newbuffer;
-	el->el_chared.c_kill.last = newbuffer +
-					(el->el_chared.c_kill.last - oldkbuf);
-	el->el_chared.c_kill.mark = el->el_line.buffer +
-					(el->el_chared.c_kill.mark - oldbuf);
-
-	/*
-	 * Reallocate undo buffer.
-	 */
-	newbuffer = el_realloc(el->el_chared.c_undo.buf,
-	    newsz * sizeof(*newbuffer));
-	if (!newbuffer)
-		return 0;
-
-	/* zero the newly added memory, leave old data in */
-	(void) memset(&newbuffer[sz], 0, (newsz - sz) * sizeof(*newbuffer));
-	el->el_chared.c_undo.buf = newbuffer;
-
-	newbuffer = el_realloc(el->el_chared.c_redo.buf,
-	    newsz * sizeof(*newbuffer));
-	if (!newbuffer)
-		return 0;
-	el->el_chared.c_redo.pos = newbuffer +
-			(el->el_chared.c_redo.pos - el->el_chared.c_redo.buf);
-	el->el_chared.c_redo.lim = newbuffer +
-			(el->el_chared.c_redo.lim - el->el_chared.c_redo.buf);
-	el->el_chared.c_redo.buf = newbuffer;
-
-	if (!hist_enlargebuf(el, sz, newsz))
-		return 0;
-
-	/* Safe to set enlarged buffer size */
-	el->el_line.limit  = &el->el_line.buffer[newsz - EL_LEAVE];
-	if (el->el_chared.c_resizefun)
-		(*el->el_chared.c_resizefun)(el, el->el_chared.c_resizearg);
-	return 1;
-}
-
-/* ch_end():
- *	Free the data structures used by the editor
- */
-protected void
-ch_end(EditLine *el)
-{
-	el_free(el->el_line.buffer);
-	el->el_line.buffer = NULL;
-	el->el_line.limit = NULL;
-	el_free(el->el_chared.c_undo.buf);
-	el->el_chared.c_undo.buf = NULL;
-	el_free(el->el_chared.c_redo.buf);
-	el->el_chared.c_redo.buf = NULL;
-	el->el_chared.c_redo.pos = NULL;
-	el->el_chared.c_redo.lim = NULL;
-	el->el_chared.c_redo.cmd = ED_UNASSIGNED;
-	el_free(el->el_chared.c_kill.buf);
-	el->el_chared.c_kill.buf = NULL;
-	ch_reset(el, 1);
-	el_free(el->el_chared.c_macro.macro);
-	el->el_chared.c_macro.macro = NULL;
-}
-
-
-/* el_insertstr():
- *	Insert string at cursorI
- */
-public int
-FUN(el,insertstr)(EditLine *el, const Char *s)
-{
-	size_t len;
-
-	if (s == NULL || (len = Strlen(s)) == 0)
-		return -1;
-	if (el->el_line.lastchar + len >= el->el_line.limit) {
-		if (!ch_enlargebufs(el, len))
-			return -1;
-	}
-
-	c_insert(el, (int)len);
-	while (*s)
-		*el->el_line.cursor++ = *s++;
-	return 0;
-}
-
-
-/* el_deletestr():
- *	Delete num characters before the cursor
- */
-public void
-el_deletestr(EditLine *el, int n)
-{
-	if (n <= 0)
-		return;
-
-	if (el->el_line.cursor < &el->el_line.buffer[n])
-		return;
-
-	c_delbefore(el, n);		/* delete before dot */
-	el->el_line.cursor -= n;
-	if (el->el_line.cursor < el->el_line.buffer)
-		el->el_line.cursor = el->el_line.buffer;
-}
-
-/* el_cursor():
- *	Move the cursor to the left or the right of the current position
- */
-public int
-el_cursor(EditLine *el, int n)
-{
-	if (n == 0)
-		goto out;
-
-	el->el_line.cursor += n;
-
-	if (el->el_line.cursor < el->el_line.buffer)
-		el->el_line.cursor = el->el_line.buffer;
-	if (el->el_line.cursor > el->el_line.lastchar)
-		el->el_line.cursor = el->el_line.lastchar;
-out:
-	return (int)(el->el_line.cursor - el->el_line.buffer);
-}
-
-/* c_gets():
- *	Get a string
- */
-protected int
-c_gets(EditLine *el, Char *buf, const Char *prompt)
-{
-	wchar_t wch;
-	ssize_t len;
-	Char *cp = el->el_line.buffer, ch;
-
-	if (prompt) {
-		len = (ssize_t)Strlen(prompt);
-		(void)memcpy(cp, prompt, (size_t)len * sizeof(*cp));
-		cp += len;
-	}
-	len = 0;
-
-	for (;;) {
-		el->el_line.cursor = cp;
-		*cp = ' ';
-		el->el_line.lastchar = cp + 1;
-		re_refresh(el);
-
-		if (el_wgetc(el, &wch) != 1) {
-			ed_end_of_file(el, 0);
-			len = -1;
-			break;
-		}
-		ch = (Char)wch;
-
-		switch (ch) {
-
-		case L'\b':	/* Delete and backspace */
-		case 0177:
-			if (len == 0) {
-				len = -1;
-				break;
-			}
-			len--;
-			cp--;
-			continue;
-
-		case 0033:	/* ESC */
-		case L'\r':	/* Newline */
-		case L'\n':
-			buf[len] = ch;
-			break;
-
-		default:
-			if (len >= (ssize_t)(EL_BUFSIZ - 16))
-				terminal_beep(el);
-			else {
-				buf[len++] = ch;
-				*cp++ = ch;
-			}
-			continue;
-		}
-		break;
-	}
-
-	el->el_line.buffer[0] = '\0';
-	el->el_line.lastchar = el->el_line.buffer;
-	el->el_line.cursor = el->el_line.buffer;
-	return (int)len;
-}
-
-
-/* c_hpos():
- *	Return the current horizontal position of the cursor
- */
-protected int
-c_hpos(EditLine *el)
-{
-	Char *ptr;
-
-	/*
-	 * Find how many characters till the beginning of this line.
-	 */
-	if (el->el_line.cursor == el->el_line.buffer)
-		return 0;
-	else {
-		for (ptr = el->el_line.cursor - 1;
-		     ptr >= el->el_line.buffer && *ptr != '\n';
-		     ptr--)
-			continue;
-		return (int)(el->el_line.cursor - ptr - 1);
-	}
-}
-
-protected int
-ch_resizefun(EditLine *el, el_zfunc_t f, void *a)
-{
-	el->el_chared.c_resizefun = f;
-	el->el_chared.c_resizearg = a;
-	return 0;
-}
-
-protected int
-ch_aliasfun(EditLine *el, el_afunc_t f, void *a)
-{
-	el->el_chared.c_aliasfun = f;
-	el->el_chared.c_aliasarg = a;
-	return 0;
-}