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File:	lib/libedit/common.c	Lines:	0	269	0.0 %
Date:	2017-11-13	Branches:	0	212	0.0 %


/*	$OpenBSD: common.c,v 1.22 2016/05/22 23:09:56 schwarze Exp $	*/
/*	$NetBSD: common.c,v 1.24 2009/12/30 22:37:40 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"

/*
 * common.c: Common Editor functions
 */
#include <ctype.h>
#include <string.h>

#include "el.h"
#include "common.h"
#include "fcns.h"
#include "parse.h"
#include "vi.h"

/* ed_end_of_file():
 *	Indicate end of file
 *	[^D]
 */
protected el_action_t
/*ARGSUSED*/
ed_end_of_file(EditLine *el, wint_t c __attribute__((__unused__)))
{

	re_goto_bottom(el);
	*el->el_line.lastchar = '\0';
	return CC_EOF;
}


/* ed_insert():
 *	Add character to the line
 *	Insert a character [bound to all insert keys]
 */
protected el_action_t
ed_insert(EditLine *el, wint_t c)
{
	int count = el->el_state.argument;

	if (c == '\0')
		return CC_ERROR;

	if (el->el_line.lastchar + el->el_state.argument >=
	    el->el_line.limit) {
		/* end of buffer space, try to allocate more */
		if (!ch_enlargebufs(el, (size_t) count))
			return CC_ERROR;	/* error allocating more */
	}

	if (count == 1) {
		if (el->el_state.inputmode == MODE_INSERT
		    || el->el_line.cursor >= el->el_line.lastchar)
			c_insert(el, 1);

		*el->el_line.cursor++ = c;
		re_fastaddc(el);		/* fast refresh for one char. */
	} else {
		if (el->el_state.inputmode != MODE_REPLACE_1)
			c_insert(el, el->el_state.argument);

		while (count-- && el->el_line.cursor < el->el_line.lastchar)
			*el->el_line.cursor++ = c;
		re_refresh(el);
	}

	if (el->el_state.inputmode == MODE_REPLACE_1)
		return vi_command_mode(el, 0);

	return CC_NORM;
}


/* ed_delete_prev_word():
 *	Delete from beginning of current word to cursor
 *	[M-^?] [^W]
 */
protected el_action_t
/*ARGSUSED*/
ed_delete_prev_word(EditLine *el, wint_t c __attribute__((__unused__)))
{
	wchar_t *cp, *p, *kp;

	if (el->el_line.cursor == el->el_line.buffer)
		return CC_ERROR;

	cp = c__prev_word(el->el_line.cursor, el->el_line.buffer,
	    el->el_state.argument, ce__isword);

	for (p = cp, kp = el->el_chared.c_kill.buf; p < el->el_line.cursor; p++)
		*kp++ = *p;
	el->el_chared.c_kill.last = kp;

	c_delbefore(el, (int)(el->el_line.cursor - cp));/* delete before dot */
	el->el_line.cursor = cp;
	if (el->el_line.cursor < el->el_line.buffer)
		el->el_line.cursor = el->el_line.buffer; /* bounds check */
	return CC_REFRESH;
}


/* ed_delete_next_char():
 *	Delete character under cursor
 *	[^D] [x]
 */
protected el_action_t
/*ARGSUSED*/
ed_delete_next_char(EditLine *el, wint_t c)
{
#ifdef notdef			/* XXX */
#define	EL	el->el_line
	(void) fprintf(el->el_errfile,
	    "\nD(b: %p(%ls)  c: %p(%ls) last: %p(%ls) limit: %p(%ls)\n",
	    EL.buffer, EL.buffer, EL.cursor, EL.cursor, EL.lastchar,
	    EL.lastchar, EL.limit, EL.limit);
#endif
	if (el->el_line.cursor == el->el_line.lastchar) {
			/* if I'm at the end */
		if (el->el_map.type == MAP_VI) {
			if (el->el_line.cursor == el->el_line.buffer) {
				/* if I'm also at the beginning */
#ifdef KSHVI
				return CC_ERROR;
#else
				/* then do an EOF */
				terminal_writec(el, c);
				return CC_EOF;
#endif
			} else {
#ifdef KSHVI
				el->el_line.cursor--;
#else
				return CC_ERROR;
#endif
			}
		} else {
			if (el->el_line.cursor != el->el_line.buffer)
				el->el_line.cursor--;
			else
				return CC_ERROR;
		}
	}
	c_delafter(el, el->el_state.argument);	/* delete after dot */
	if (el->el_line.cursor >= el->el_line.lastchar &&
	    el->el_line.cursor > el->el_line.buffer)
			/* bounds check */
		el->el_line.cursor = el->el_line.lastchar - 1;
	return CC_REFRESH;
}


/* ed_kill_line():
 *	Cut to the end of line
 *	[^K] [^K]
 */
protected el_action_t
/*ARGSUSED*/
ed_kill_line(EditLine *el, wint_t c __attribute__((__unused__)))
{
	wchar_t *kp, *cp;

	cp = el->el_line.cursor;
	kp = el->el_chared.c_kill.buf;
	while (cp < el->el_line.lastchar)
		*kp++ = *cp++;	/* copy it */
	el->el_chared.c_kill.last = kp;
			/* zap! -- delete to end */
	el->el_line.lastchar = el->el_line.cursor;
	return CC_REFRESH;
}


/* ed_move_to_end():
 *	Move cursor to the end of line
 *	[^E] [^E]
 */
protected el_action_t
/*ARGSUSED*/
ed_move_to_end(EditLine *el, wint_t c __attribute__((__unused__)))
{

	el->el_line.cursor = el->el_line.lastchar;
	if (el->el_map.type == MAP_VI) {
		if (el->el_chared.c_vcmd.action != NOP) {
			cv_delfini(el);
			return CC_REFRESH;
		}
#ifdef VI_MOVE
		el->el_line.cursor--;
#endif
	}
	return CC_CURSOR;
}


/* ed_move_to_beg():
 *	Move cursor to the beginning of line
 *	[^A] [^A]
 */
protected el_action_t
/*ARGSUSED*/
ed_move_to_beg(EditLine *el, wint_t c __attribute__((__unused__)))
{

	el->el_line.cursor = el->el_line.buffer;

	if (el->el_map.type == MAP_VI) {
			/* We want FIRST non space character */
		while (iswspace(*el->el_line.cursor))
			el->el_line.cursor++;
		if (el->el_chared.c_vcmd.action != NOP) {
			cv_delfini(el);
			return CC_REFRESH;
		}
	}
	return CC_CURSOR;
}


/* ed_transpose_chars():
 *	Exchange the character to the left of the cursor with the one under it
 *	[^T] [^T]
 */
protected el_action_t
ed_transpose_chars(EditLine *el, wint_t c)
{

	if (el->el_line.cursor < el->el_line.lastchar) {
		if (el->el_line.lastchar <= &el->el_line.buffer[1])
			return CC_ERROR;
		else
			el->el_line.cursor++;
	}
	if (el->el_line.cursor > &el->el_line.buffer[1]) {
		/* must have at least two chars entered */
		c = el->el_line.cursor[-2];
		el->el_line.cursor[-2] = el->el_line.cursor[-1];
		el->el_line.cursor[-1] = c;
		return CC_REFRESH;
	} else
		return CC_ERROR;
}


/* ed_next_char():
 *	Move to the right one character
 *	[^F] [^F]
 */
protected el_action_t
/*ARGSUSED*/
ed_next_char(EditLine *el, wint_t c __attribute__((__unused__)))
{
	wchar_t *lim = el->el_line.lastchar;

	if (el->el_line.cursor >= lim ||
	    (el->el_line.cursor == lim - 1 &&
	    el->el_map.type == MAP_VI &&
	    el->el_chared.c_vcmd.action == NOP))
		return CC_ERROR;

	el->el_line.cursor += el->el_state.argument;
	if (el->el_line.cursor > lim)
		el->el_line.cursor = lim;

	if (el->el_map.type == MAP_VI)
		if (el->el_chared.c_vcmd.action != NOP) {
			cv_delfini(el);
			return CC_REFRESH;
		}
	return CC_CURSOR;
}


/* ed_prev_word():
 *	Move to the beginning of the current word
 *	[M-b] [b]
 */
protected el_action_t
/*ARGSUSED*/
ed_prev_word(EditLine *el, wint_t c __attribute__((__unused__)))
{

	if (el->el_line.cursor == el->el_line.buffer)
		return CC_ERROR;

	el->el_line.cursor = c__prev_word(el->el_line.cursor,
	    el->el_line.buffer,
	    el->el_state.argument,
	    ce__isword);

	if (el->el_map.type == MAP_VI)
		if (el->el_chared.c_vcmd.action != NOP) {
			cv_delfini(el);
			return CC_REFRESH;
		}
	return CC_CURSOR;
}


/* ed_prev_char():
 *	Move to the left one character
 *	[^B] [^B]
 */
protected el_action_t
/*ARGSUSED*/
ed_prev_char(EditLine *el, wint_t c __attribute__((__unused__)))
{

	if (el->el_line.cursor > el->el_line.buffer) {
		el->el_line.cursor -= el->el_state.argument;
		if (el->el_line.cursor < el->el_line.buffer)
			el->el_line.cursor = el->el_line.buffer;

		if (el->el_map.type == MAP_VI)
			if (el->el_chared.c_vcmd.action != NOP) {
				cv_delfini(el);
				return CC_REFRESH;
			}
		return CC_CURSOR;
	} else
		return CC_ERROR;
}


/* ed_quoted_insert():
 *	Add the next character typed verbatim
 *	[^V] [^V]
 */
protected el_action_t
ed_quoted_insert(EditLine *el, wint_t c)
{
	int num;

	tty_quotemode(el);
	num = el_wgetc(el, &c);
	tty_noquotemode(el);
	if (num == 1)
		return ed_insert(el, c);
	else
		return ed_end_of_file(el, 0);
}


/* ed_digit():
 *	Adds to argument or enters a digit
 */
protected el_action_t
ed_digit(EditLine *el, wint_t c)
{

	if (!iswdigit(c))
		return CC_ERROR;

	if (el->el_state.doingarg) {
			/* if doing an arg, add this in... */
		if (el->el_state.lastcmd == EM_UNIVERSAL_ARGUMENT)
			el->el_state.argument = c - '0';
		else {
			if (el->el_state.argument > 1000000)
				return CC_ERROR;
			el->el_state.argument =
			    (el->el_state.argument * 10) + (c - '0');
		}
		return CC_ARGHACK;
	}

	return ed_insert(el, c);
}


/* ed_argument_digit():
 *	Digit that starts argument
 *	For ESC-n
 */
protected el_action_t
ed_argument_digit(EditLine *el, wint_t c)
{

	if (!iswdigit(c))
		return CC_ERROR;

	if (el->el_state.doingarg) {
		if (el->el_state.argument > 1000000)
			return CC_ERROR;
		el->el_state.argument = (el->el_state.argument * 10) +
		    (c - '0');
	} else {		/* else starting an argument */
		el->el_state.argument = c - '0';
		el->el_state.doingarg = 1;
	}
	return CC_ARGHACK;
}


/* ed_unassigned():
 *	Indicates unbound character
 *	Bound to keys that are not assigned
 */
protected el_action_t
/*ARGSUSED*/
ed_unassigned(EditLine *el, wint_t c __attribute__((__unused__)))
{

	return CC_ERROR;
}


/* ed_ignore():
 *	Input characters that have no effect
 *	[^C ^O ^Q ^S ^Z ^\ ^]] [^C ^O ^Q ^S ^\]
 */
protected el_action_t
/*ARGSUSED*/
ed_ignore(EditLine *el __attribute__((__unused__)),
	      wint_t c __attribute__((__unused__)))
{

	return CC_NORM;
}


/* ed_newline():
 *	Execute command
 *	[^J]
 */
protected el_action_t
/*ARGSUSED*/
ed_newline(EditLine *el, wint_t c __attribute__((__unused__)))
{

	re_goto_bottom(el);
	*el->el_line.lastchar++ = '\n';
	*el->el_line.lastchar = '\0';
	return CC_NEWLINE;
}


/* ed_delete_prev_char():
 *	Delete the character to the left of the cursor
 *	[^?]
 */
protected el_action_t
/*ARGSUSED*/
ed_delete_prev_char(EditLine *el, wint_t c __attribute__((__unused__)))
{

	if (el->el_line.cursor <= el->el_line.buffer)
		return CC_ERROR;

	c_delbefore(el, el->el_state.argument);
	el->el_line.cursor -= el->el_state.argument;
	if (el->el_line.cursor < el->el_line.buffer)
		el->el_line.cursor = el->el_line.buffer;
	return CC_REFRESH;
}


/* ed_clear_screen():
 *	Clear screen leaving current line at the top
 *	[^L]
 */
protected el_action_t
/*ARGSUSED*/
ed_clear_screen(EditLine *el, wint_t c __attribute__((__unused__)))
{

	terminal_clear_screen(el);	/* clear the whole real screen */
	re_clear_display(el);	/* reset everything */
	return CC_REFRESH;
}


/* ed_redisplay():
 *	Redisplay everything
 *	^R
 */
protected el_action_t
/*ARGSUSED*/
ed_redisplay(EditLine *el __attribute__((__unused__)),
	     wint_t c __attribute__((__unused__)))
{

	return CC_REDISPLAY;
}


/* ed_start_over():
 *	Erase current line and start from scratch
 *	[^G]
 */
protected el_action_t
/*ARGSUSED*/
ed_start_over(EditLine *el, wint_t c __attribute__((__unused__)))
{

	ch_reset(el);
	return CC_REFRESH;
}


/* ed_sequence_lead_in():
 *	First character in a bound sequence
 *	Placeholder for external keys
 */
protected el_action_t
/*ARGSUSED*/
ed_sequence_lead_in(EditLine *el __attribute__((__unused__)),
		    wint_t c __attribute__((__unused__)))
{

	return CC_NORM;
}


/* ed_prev_history():
 *	Move to the previous history line
 *	[^P] [k]
 */
protected el_action_t
/*ARGSUSED*/
ed_prev_history(EditLine *el, wint_t c __attribute__((__unused__)))
{
	char beep = 0;
	int sv_event = el->el_history.eventno;

	el->el_chared.c_undo.len = -1;
	*el->el_line.lastchar = '\0';		/* just in case */

	if (el->el_history.eventno == 0) {	/* save the current buffer
						 * away */
		(void) wcsncpy(el->el_history.buf, el->el_line.buffer,
		    EL_BUFSIZ);
		el->el_history.last = el->el_history.buf +
		    (el->el_line.lastchar - el->el_line.buffer);
	}
	el->el_history.eventno += el->el_state.argument;

	if (hist_get(el) == CC_ERROR) {
		if (el->el_map.type == MAP_VI) {
			el->el_history.eventno = sv_event;
		}
		beep = 1;
		/* el->el_history.eventno was fixed by first call */
		(void) hist_get(el);
	}
	if (beep)
		return CC_REFRESH_BEEP;
	return CC_REFRESH;
}


/* ed_next_history():
 *	Move to the next history line
 *	[^N] [j]
 */
protected el_action_t
/*ARGSUSED*/
ed_next_history(EditLine *el, wint_t c __attribute__((__unused__)))
{
	el_action_t beep = CC_REFRESH, rval;

	el->el_chared.c_undo.len = -1;
	*el->el_line.lastchar = '\0';	/* just in case */

	el->el_history.eventno -= el->el_state.argument;

	if (el->el_history.eventno < 0) {
		el->el_history.eventno = 0;
		beep = CC_REFRESH_BEEP;
	}
	rval = hist_get(el);
	if (rval == CC_REFRESH)
		return beep;
	return rval;

}


/* ed_search_prev_history():
 *	Search previous in history for a line matching the current
 *	next search history [M-P] [K]
 */
protected el_action_t
/*ARGSUSED*/
ed_search_prev_history(EditLine *el, wint_t c __attribute__((__unused__)))
{
	const wchar_t *hp;
	int h;
	int found = 0;

	el->el_chared.c_vcmd.action = NOP;
	el->el_chared.c_undo.len = -1;
	*el->el_line.lastchar = '\0';	/* just in case */
	if (el->el_history.eventno < 0) {
#ifdef DEBUG_EDIT
		(void) fprintf(el->el_errfile,
		    "e_prev_search_hist(): eventno < 0;\n");
#endif
		el->el_history.eventno = 0;
		return CC_ERROR;
	}
	if (el->el_history.eventno == 0) {
		(void) wcsncpy(el->el_history.buf, el->el_line.buffer,
		    EL_BUFSIZ);
		el->el_history.last = el->el_history.buf +
		    (el->el_line.lastchar - el->el_line.buffer);
	}
	if (el->el_history.ref == NULL)
		return CC_ERROR;

	hp = HIST_FIRST(el);
	if (hp == NULL)
		return CC_ERROR;

	c_setpat(el);		/* Set search pattern !! */

	for (h = 1; h <= el->el_history.eventno; h++)
		hp = HIST_NEXT(el);

	while (hp != NULL) {
#ifdef SDEBUG
		(void) fprintf(el->el_errfile, "Comparing with \"%s\"\n", hp);
#endif
		if ((wcsncmp(hp, el->el_line.buffer, (size_t)
			    (el->el_line.lastchar - el->el_line.buffer)) ||
			hp[el->el_line.lastchar - el->el_line.buffer]) &&
		    c_hmatch(el, hp)) {
			found = 1;
			break;
		}
		h++;
		hp = HIST_NEXT(el);
	}

	if (!found) {
#ifdef SDEBUG
		(void) fprintf(el->el_errfile, "not found\n");
#endif
		return CC_ERROR;
	}
	el->el_history.eventno = h;

	return hist_get(el);
}


/* ed_search_next_history():
 *	Search next in history for a line matching the current
 *	[M-N] [J]
 */
protected el_action_t
/*ARGSUSED*/
ed_search_next_history(EditLine *el, wint_t c __attribute__((__unused__)))
{
	const wchar_t *hp;
	int h;
	int found = 0;

	el->el_chared.c_vcmd.action = NOP;
	el->el_chared.c_undo.len = -1;
	*el->el_line.lastchar = '\0';	/* just in case */

	if (el->el_history.eventno == 0)
		return CC_ERROR;

	if (el->el_history.ref == NULL)
		return CC_ERROR;

	hp = HIST_FIRST(el);
	if (hp == NULL)
		return CC_ERROR;

	c_setpat(el);		/* Set search pattern !! */

	for (h = 1; h < el->el_history.eventno && hp; h++) {
#ifdef SDEBUG
		(void) fprintf(el->el_errfile, "Comparing with \"%s\"\n", hp);
#endif
		if ((wcsncmp(hp, el->el_line.buffer, (size_t)
			    (el->el_line.lastchar - el->el_line.buffer)) ||
			hp[el->el_line.lastchar - el->el_line.buffer]) &&
		    c_hmatch(el, hp))
			found = h;
		hp = HIST_NEXT(el);
	}

	if (!found) {		/* is it the current history number? */
		if (!c_hmatch(el, el->el_history.buf)) {
#ifdef SDEBUG
			(void) fprintf(el->el_errfile, "not found\n");
#endif
			return CC_ERROR;
		}
	}
	el->el_history.eventno = found;

	return hist_get(el);
}


/* ed_prev_line():
 *	Move up one line
 *	Could be [k] [^p]
 */
protected el_action_t
/*ARGSUSED*/
ed_prev_line(EditLine *el, wint_t c __attribute__((__unused__)))
{
	wchar_t *ptr;
	int nchars = c_hpos(el);

	/*
         * Move to the line requested
         */
	if (*(ptr = el->el_line.cursor) == '\n')
		ptr--;

	for (; ptr >= el->el_line.buffer; ptr--)
		if (*ptr == '\n' && --el->el_state.argument <= 0)
			break;

	if (el->el_state.argument > 0)
		return CC_ERROR;

	/*
         * Move to the beginning of the line
         */
	for (ptr--; ptr >= el->el_line.buffer && *ptr != '\n'; ptr--)
		continue;

	/*
         * Move to the character requested
         */
	for (ptr++;
	    nchars-- > 0 && ptr < el->el_line.lastchar && *ptr != '\n';
	    ptr++)
		continue;

	el->el_line.cursor = ptr;
	return CC_CURSOR;
}


/* ed_next_line():
 *	Move down one line
 *	Could be [j] [^n]
 */
protected el_action_t
/*ARGSUSED*/
ed_next_line(EditLine *el, wint_t c __attribute__((__unused__)))
{
	wchar_t *ptr;
	int nchars = c_hpos(el);

	/*
         * Move to the line requested
         */
	for (ptr = el->el_line.cursor; ptr < el->el_line.lastchar; ptr++)
		if (*ptr == '\n' && --el->el_state.argument <= 0)
			break;

	if (el->el_state.argument > 0)
		return CC_ERROR;

	/*
         * Move to the character requested
         */
	for (ptr++;
	    nchars-- > 0 && ptr < el->el_line.lastchar && *ptr != '\n';
	    ptr++)
		continue;

	el->el_line.cursor = ptr;
	return CC_CURSOR;
}


/* ed_command():
 *	Editline extended command
 *	[M-X] [:]
 */
protected el_action_t
/*ARGSUSED*/
ed_command(EditLine *el, wint_t c __attribute__((__unused__)))
{
	wchar_t tmpbuf[EL_BUFSIZ];
	int tmplen;

	tmplen = c_gets(el, tmpbuf, L"\n: ");
	terminal__putc(el, '\n');

	if (tmplen < 0 || (tmpbuf[tmplen] = 0, parse_line(el, tmpbuf)) == -1)
		terminal_beep(el);

	el->el_map.current = el->el_map.key;
	re_clear_display(el);
	return CC_REFRESH;
}


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $OpenBSD: common.c,v 1.22 2016/05/22 23:09:56 schwarze Exp $ */
2			/* $NetBSD: common.c,v 1.24 2009/12/30 22:37:40 christos Exp $ */
3
4			/*-
5			* Copyright (c) 1992, 1993
6			* The Regents of the University of California. All rights reserved.
7			*
8			* This code is derived from software contributed to Berkeley by
9			* Christos Zoulas of Cornell University.
10			*
11			* Redistribution and use in source and binary forms, with or without
12			* modification, are permitted provided that the following conditions
13			* are met:
14			* 1. Redistributions of source code must retain the above copyright
15			* notice, this list of conditions and the following disclaimer.
16			* 2. Redistributions in binary form must reproduce the above copyright
17			* notice, this list of conditions and the following disclaimer in the
18			* documentation and/or other materials provided with the distribution.
19			* 3. Neither the name of the University nor the names of its contributors
20			* may be used to endorse or promote products derived from this software
21			* without specific prior written permission.
22			*
23			* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
24			* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25			* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26			* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
27			* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28			* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29			* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30			* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31			* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32			* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33			* SUCH DAMAGE.
34			*/
35
36			#include "config.h"
37
38			/*
39			* common.c: Common Editor functions
40			*/
41			#include <ctype.h>
42			#include <string.h>
43
44			#include "el.h"
45			#include "common.h"
46			#include "fcns.h"
47			#include "parse.h"
48			#include "vi.h"
49
50			/* ed_end_of_file():
51			* Indicate end of file
52			* [^D]
53			*/
54			protected el_action_t
55			/ARGSUSED/
56			ed_end_of_file(EditLine *el, wint_t c __attribute__((__unused__)))
57			{
58
59			re_goto_bottom(el);
60			*el->el_line.lastchar = '\0';
61			return CC_EOF;
62			}
63
64
65			/* ed_insert():
66			* Add character to the line
67			* Insert a character [bound to all insert keys]
68			*/
69			protected el_action_t
70			ed_insert(EditLine *el, wint_t c)
71			{
72			int count = el->el_state.argument;
73
74			if (c == '\0')
75			return CC_ERROR;
76
77			if (el->el_line.lastchar + el->el_state.argument >=
78			el->el_line.limit) {
79			/* end of buffer space, try to allocate more */
80			if (!ch_enlargebufs(el, (size_t) count))
81			return CC_ERROR; /* error allocating more */
82			}
83
84			if (count == 1) {
85			if (el->el_state.inputmode == MODE_INSERT
86			\|\| el->el_line.cursor >= el->el_line.lastchar)
87			c_insert(el, 1);
88
89			*el->el_line.cursor++ = c;
90			re_fastaddc(el); /* fast refresh for one char. */
91			} else {
92			if (el->el_state.inputmode != MODE_REPLACE_1)
93			c_insert(el, el->el_state.argument);
94
95			while (count-- && el->el_line.cursor < el->el_line.lastchar)
96			*el->el_line.cursor++ = c;
97			re_refresh(el);
98			}
99
100			if (el->el_state.inputmode == MODE_REPLACE_1)
101			return vi_command_mode(el, 0);
102
103			return CC_NORM;
104			}
105
106
107			/* ed_delete_prev_word():
108			* Delete from beginning of current word to cursor
109			* [M-^?] [^W]
110			*/
111			protected el_action_t
112			/ARGSUSED/
113			ed_delete_prev_word(EditLine *el, wint_t c __attribute__((__unused__)))
114			{
115			wchar_t cp, p, *kp;
116
117			if (el->el_line.cursor == el->el_line.buffer)
118			return CC_ERROR;
119
120			cp = c__prev_word(el->el_line.cursor, el->el_line.buffer,
121			el->el_state.argument, ce__isword);
122
123			for (p = cp, kp = el->el_chared.c_kill.buf; p < el->el_line.cursor; p++)
124			kp++ = p;
125			el->el_chared.c_kill.last = kp;
126
127			c_delbefore(el, (int)(el->el_line.cursor - cp));/* delete before dot */
128			el->el_line.cursor = cp;
129			if (el->el_line.cursor < el->el_line.buffer)
130			el->el_line.cursor = el->el_line.buffer; /* bounds check */
131			return CC_REFRESH;
132			}
133
134
135			/* ed_delete_next_char():
136			* Delete character under cursor
137			* [^D] [x]
138			*/
139			protected el_action_t
140			/ARGSUSED/
141			ed_delete_next_char(EditLine *el, wint_t c)
142			{
143			#ifdef notdef /* XXX */
144			#define EL el->el_line
145			(void) fprintf(el->el_errfile,
146			"\nD(b: %p(%ls) c: %p(%ls) last: %p(%ls) limit: %p(%ls)\n",
147			EL.buffer, EL.buffer, EL.cursor, EL.cursor, EL.lastchar,
148			EL.lastchar, EL.limit, EL.limit);
149			#endif
150			if (el->el_line.cursor == el->el_line.lastchar) {
151			/* if I'm at the end */
152			if (el->el_map.type == MAP_VI) {
153			if (el->el_line.cursor == el->el_line.buffer) {
154			/* if I'm also at the beginning */
155			#ifdef KSHVI
156			return CC_ERROR;
157			#else
158			/* then do an EOF */
159			terminal_writec(el, c);
160			return CC_EOF;
161			#endif
162			} else {
163			#ifdef KSHVI
164			el->el_line.cursor--;
165			#else
166			return CC_ERROR;
167			#endif
168			}
169			} else {
170			if (el->el_line.cursor != el->el_line.buffer)
171			el->el_line.cursor--;
172			else
173			return CC_ERROR;
174			}
175			}
176			c_delafter(el, el->el_state.argument); /* delete after dot */
177			if (el->el_line.cursor >= el->el_line.lastchar &&
178			el->el_line.cursor > el->el_line.buffer)
179			/* bounds check */
180			el->el_line.cursor = el->el_line.lastchar - 1;
181			return CC_REFRESH;
182			}
183
184
185			/* ed_kill_line():
186			* Cut to the end of line
187			* [^K] [^K]
188			*/
189			protected el_action_t
190			/ARGSUSED/
191			ed_kill_line(EditLine *el, wint_t c __attribute__((__unused__)))
192			{
193			wchar_t kp, cp;
194
195			cp = el->el_line.cursor;
196			kp = el->el_chared.c_kill.buf;
197			while (cp < el->el_line.lastchar)
198			kp++ = cp++; /* copy it */
199			el->el_chared.c_kill.last = kp;
200			/* zap! -- delete to end */
201			el->el_line.lastchar = el->el_line.cursor;
202			return CC_REFRESH;
203			}
204
205
206			/* ed_move_to_end():
207			* Move cursor to the end of line
208			* [^E] [^E]
209			*/
210			protected el_action_t
211			/ARGSUSED/
212			ed_move_to_end(EditLine *el, wint_t c __attribute__((__unused__)))
213			{
214
215			el->el_line.cursor = el->el_line.lastchar;
216			if (el->el_map.type == MAP_VI) {
217			if (el->el_chared.c_vcmd.action != NOP) {
218			cv_delfini(el);
219			return CC_REFRESH;
220			}
221			#ifdef VI_MOVE
222			el->el_line.cursor--;
223			#endif
224			}
225			return CC_CURSOR;
226			}
227
228
229			/* ed_move_to_beg():
230			* Move cursor to the beginning of line
231			* [^A] [^A]
232			*/
233			protected el_action_t
234			/ARGSUSED/
235			ed_move_to_beg(EditLine *el, wint_t c __attribute__((__unused__)))
236			{
237
238			el->el_line.cursor = el->el_line.buffer;
239
240			if (el->el_map.type == MAP_VI) {
241			/* We want FIRST non space character */
242			while (iswspace(*el->el_line.cursor))
243			el->el_line.cursor++;
244			if (el->el_chared.c_vcmd.action != NOP) {
245			cv_delfini(el);
246			return CC_REFRESH;
247			}
248			}
249			return CC_CURSOR;
250			}
251
252
253			/* ed_transpose_chars():
254			* Exchange the character to the left of the cursor with the one under it
255			* [^T] [^T]
256			*/
257			protected el_action_t
258			ed_transpose_chars(EditLine *el, wint_t c)
259			{
260
261			if (el->el_line.cursor < el->el_line.lastchar) {
262			if (el->el_line.lastchar <= &el->el_line.buffer[1])
263			return CC_ERROR;
264			else
265			el->el_line.cursor++;
266			}
267			if (el->el_line.cursor > &el->el_line.buffer[1]) {
268			/* must have at least two chars entered */
269			c = el->el_line.cursor[-2];
270			el->el_line.cursor[-2] = el->el_line.cursor[-1];
271			el->el_line.cursor[-1] = c;
272			return CC_REFRESH;
273			} else
274			return CC_ERROR;
275			}
276
277
278			/* ed_next_char():
279			* Move to the right one character
280			* [^F] [^F]
281			*/
282			protected el_action_t
283			/ARGSUSED/
284			ed_next_char(EditLine *el, wint_t c __attribute__((__unused__)))
285			{
286			wchar_t *lim = el->el_line.lastchar;
287
288			if (el->el_line.cursor >= lim \|\|
289			(el->el_line.cursor == lim - 1 &&
290			el->el_map.type == MAP_VI &&
291			el->el_chared.c_vcmd.action == NOP))
292			return CC_ERROR;
293
294			el->el_line.cursor += el->el_state.argument;
295			if (el->el_line.cursor > lim)
296			el->el_line.cursor = lim;
297
298			if (el->el_map.type == MAP_VI)
299			if (el->el_chared.c_vcmd.action != NOP) {
300			cv_delfini(el);
301			return CC_REFRESH;
302			}
303			return CC_CURSOR;
304			}
305
306
307			/* ed_prev_word():
308			* Move to the beginning of the current word
309			* [M-b] [b]
310			*/
311			protected el_action_t
312			/ARGSUSED/
313			ed_prev_word(EditLine *el, wint_t c __attribute__((__unused__)))
314			{
315
316			if (el->el_line.cursor == el->el_line.buffer)
317			return CC_ERROR;
318
319			el->el_line.cursor = c__prev_word(el->el_line.cursor,
320			el->el_line.buffer,
321			el->el_state.argument,
322			ce__isword);
323
324			if (el->el_map.type == MAP_VI)
325			if (el->el_chared.c_vcmd.action != NOP) {
326			cv_delfini(el);
327			return CC_REFRESH;
328			}
329			return CC_CURSOR;
330			}
331
332
333			/* ed_prev_char():
334			* Move to the left one character
335			* [^B] [^B]
336			*/
337			protected el_action_t
338			/ARGSUSED/
339			ed_prev_char(EditLine *el, wint_t c __attribute__((__unused__)))
340			{
341
342			if (el->el_line.cursor > el->el_line.buffer) {
343			el->el_line.cursor -= el->el_state.argument;
344			if (el->el_line.cursor < el->el_line.buffer)
345			el->el_line.cursor = el->el_line.buffer;
346
347			if (el->el_map.type == MAP_VI)
348			if (el->el_chared.c_vcmd.action != NOP) {
349			cv_delfini(el);
350			return CC_REFRESH;
351			}
352			return CC_CURSOR;
353			} else
354			return CC_ERROR;
355			}
356
357
358			/* ed_quoted_insert():
359			* Add the next character typed verbatim
360			* [^V] [^V]
361			*/
362			protected el_action_t
363			ed_quoted_insert(EditLine *el, wint_t c)
364			{
365			int num;
366
367			tty_quotemode(el);
368			num = el_wgetc(el, &c);
369			tty_noquotemode(el);
370			if (num == 1)
371			return ed_insert(el, c);
372			else
373			return ed_end_of_file(el, 0);
374			}
375
376
377			/* ed_digit():
378			* Adds to argument or enters a digit
379			*/
380			protected el_action_t
381			ed_digit(EditLine *el, wint_t c)
382			{
383
384			if (!iswdigit(c))
385			return CC_ERROR;
386
387			if (el->el_state.doingarg) {
388			/* if doing an arg, add this in... */
389			if (el->el_state.lastcmd == EM_UNIVERSAL_ARGUMENT)
390			el->el_state.argument = c - '0';
391			else {
392			if (el->el_state.argument > 1000000)
393			return CC_ERROR;
394			el->el_state.argument =
395			(el->el_state.argument * 10) + (c - '0');
396			}
397			return CC_ARGHACK;
398			}
399
400			return ed_insert(el, c);
401			}
402
403
404			/* ed_argument_digit():
405			* Digit that starts argument
406			* For ESC-n
407			*/
408			protected el_action_t
409			ed_argument_digit(EditLine *el, wint_t c)
410			{
411
412			if (!iswdigit(c))
413			return CC_ERROR;
414
415			if (el->el_state.doingarg) {
416			if (el->el_state.argument > 1000000)
417			return CC_ERROR;
418			el->el_state.argument = (el->el_state.argument * 10) +
419			(c - '0');
420			} else { /* else starting an argument */
421			el->el_state.argument = c - '0';
422			el->el_state.doingarg = 1;
423			}
424			return CC_ARGHACK;
425			}
426
427
428			/* ed_unassigned():
429			* Indicates unbound character
430			* Bound to keys that are not assigned
431			*/
432			protected el_action_t
433			/ARGSUSED/
434			ed_unassigned(EditLine *el, wint_t c __attribute__((__unused__)))
435			{
436
437			return CC_ERROR;
438			}
439
440
441			/* ed_ignore():
442			* Input characters that have no effect
443			* [^C ^O ^Q ^S ^Z ^\ ^]] [^C ^O ^Q ^S ^\]
444			*/
445			protected el_action_t
446			/ARGSUSED/
447			ed_ignore(EditLine *el __attribute__((__unused__)),
448			wint_t c __attribute__((__unused__)))
449			{
450
451			return CC_NORM;
452			}
453
454
455			/* ed_newline():
456			* Execute command
457			* [^J]
458			*/
459			protected el_action_t
460			/ARGSUSED/
461			ed_newline(EditLine *el, wint_t c __attribute__((__unused__)))
462			{
463
464			re_goto_bottom(el);
465			*el->el_line.lastchar++ = '\n';
466			*el->el_line.lastchar = '\0';
467			return CC_NEWLINE;
468			}
469
470
471			/* ed_delete_prev_char():
472			* Delete the character to the left of the cursor
473			* [^?]
474			*/
475			protected el_action_t
476			/ARGSUSED/
477			ed_delete_prev_char(EditLine *el, wint_t c __attribute__((__unused__)))
478			{
479
480			if (el->el_line.cursor <= el->el_line.buffer)
481			return CC_ERROR;
482
483			c_delbefore(el, el->el_state.argument);
484			el->el_line.cursor -= el->el_state.argument;
485			if (el->el_line.cursor < el->el_line.buffer)
486			el->el_line.cursor = el->el_line.buffer;
487			return CC_REFRESH;
488			}
489
490
491			/* ed_clear_screen():
492			* Clear screen leaving current line at the top
493			* [^L]
494			*/
495			protected el_action_t
496			/ARGSUSED/
497			ed_clear_screen(EditLine *el, wint_t c __attribute__((__unused__)))
498			{
499
500			terminal_clear_screen(el); /* clear the whole real screen */
501			re_clear_display(el); /* reset everything */
502			return CC_REFRESH;
503			}
504
505
506			/* ed_redisplay():
507			* Redisplay everything
508			* ^R
509			*/
510			protected el_action_t
511			/ARGSUSED/
512			ed_redisplay(EditLine *el __attribute__((__unused__)),
513			wint_t c __attribute__((__unused__)))
514			{
515
516			return CC_REDISPLAY;
517			}
518
519
520			/* ed_start_over():
521			* Erase current line and start from scratch
522			* [^G]
523			*/
524			protected el_action_t
525			/ARGSUSED/
526			ed_start_over(EditLine *el, wint_t c __attribute__((__unused__)))
527			{
528
529			ch_reset(el);
530			return CC_REFRESH;
531			}
532
533
534			/* ed_sequence_lead_in():
535			* First character in a bound sequence
536			* Placeholder for external keys
537			*/
538			protected el_action_t
539			/ARGSUSED/
540			ed_sequence_lead_in(EditLine *el __attribute__((__unused__)),
541			wint_t c __attribute__((__unused__)))
542			{
543
544			return CC_NORM;
545			}
546
547
548			/* ed_prev_history():
549			* Move to the previous history line
550			* [^P] [k]
551			*/
552			protected el_action_t
553			/ARGSUSED/
554			ed_prev_history(EditLine *el, wint_t c __attribute__((__unused__)))
555			{
556			char beep = 0;
557			int sv_event = el->el_history.eventno;
558
559			el->el_chared.c_undo.len = -1;
560			el->el_line.lastchar = '\0'; / just in case */
561
562			if (el->el_history.eventno == 0) { /* save the current buffer
563			* away */
564			(void) wcsncpy(el->el_history.buf, el->el_line.buffer,
565			EL_BUFSIZ);
566			el->el_history.last = el->el_history.buf +
567			(el->el_line.lastchar - el->el_line.buffer);
568			}
569			el->el_history.eventno += el->el_state.argument;
570
571			if (hist_get(el) == CC_ERROR) {
572			if (el->el_map.type == MAP_VI) {
573			el->el_history.eventno = sv_event;
574			}
575			beep = 1;
576			/* el->el_history.eventno was fixed by first call */
577			(void) hist_get(el);
578			}
579			if (beep)
580			return CC_REFRESH_BEEP;
581			return CC_REFRESH;
582			}
583
584
585			/* ed_next_history():
586			* Move to the next history line
587			* [^N] [j]
588			*/
589			protected el_action_t
590			/ARGSUSED/
591			ed_next_history(EditLine *el, wint_t c __attribute__((__unused__)))
592			{
593			el_action_t beep = CC_REFRESH, rval;
594
595			el->el_chared.c_undo.len = -1;
596			el->el_line.lastchar = '\0'; / just in case */
597
598			el->el_history.eventno -= el->el_state.argument;
599
600			if (el->el_history.eventno < 0) {
601			el->el_history.eventno = 0;
602			beep = CC_REFRESH_BEEP;
603			}
604			rval = hist_get(el);
605			if (rval == CC_REFRESH)
606			return beep;
607			return rval;
608
609			}
610
611
612			/* ed_search_prev_history():
613			* Search previous in history for a line matching the current
614			* next search history [M-P] [K]
615			*/
616			protected el_action_t
617			/ARGSUSED/
618			ed_search_prev_history(EditLine *el, wint_t c __attribute__((__unused__)))
619			{
620			const wchar_t *hp;
621			int h;
622			int found = 0;
623
624			el->el_chared.c_vcmd.action = NOP;
625			el->el_chared.c_undo.len = -1;
626			el->el_line.lastchar = '\0'; / just in case */
627			if (el->el_history.eventno < 0) {
628			#ifdef DEBUG_EDIT
629			(void) fprintf(el->el_errfile,
630			"e_prev_search_hist(): eventno < 0;\n");
631			#endif
632			el->el_history.eventno = 0;
633			return CC_ERROR;
634			}
635			if (el->el_history.eventno == 0) {
636			(void) wcsncpy(el->el_history.buf, el->el_line.buffer,
637			EL_BUFSIZ);
638			el->el_history.last = el->el_history.buf +
639			(el->el_line.lastchar - el->el_line.buffer);
640			}
641			if (el->el_history.ref == NULL)
642			return CC_ERROR;
643
644			hp = HIST_FIRST(el);
645			if (hp == NULL)
646			return CC_ERROR;
647
648			c_setpat(el); /* Set search pattern !! */
649
650			for (h = 1; h <= el->el_history.eventno; h++)
651			hp = HIST_NEXT(el);
652
653			while (hp != NULL) {
654			#ifdef SDEBUG
655			(void) fprintf(el->el_errfile, "Comparing with \"%s\"\n", hp);
656			#endif
657			if ((wcsncmp(hp, el->el_line.buffer, (size_t)
658			(el->el_line.lastchar - el->el_line.buffer)) \|\|
659			hp[el->el_line.lastchar - el->el_line.buffer]) &&
660			c_hmatch(el, hp)) {
661			found = 1;
662			break;
663			}
664			h++;
665			hp = HIST_NEXT(el);
666			}
667
668			if (!found) {
669			#ifdef SDEBUG
670			(void) fprintf(el->el_errfile, "not found\n");
671			#endif
672			return CC_ERROR;
673			}
674			el->el_history.eventno = h;
675
676			return hist_get(el);
677			}
678
679
680			/* ed_search_next_history():
681			* Search next in history for a line matching the current
682			* [M-N] [J]
683			*/
684			protected el_action_t
685			/ARGSUSED/
686			ed_search_next_history(EditLine *el, wint_t c __attribute__((__unused__)))
687			{
688			const wchar_t *hp;
689			int h;
690			int found = 0;
691
692			el->el_chared.c_vcmd.action = NOP;
693			el->el_chared.c_undo.len = -1;
694			el->el_line.lastchar = '\0'; / just in case */
695
696			if (el->el_history.eventno == 0)
697			return CC_ERROR;
698
699			if (el->el_history.ref == NULL)
700			return CC_ERROR;
701
702			hp = HIST_FIRST(el);
703			if (hp == NULL)
704			return CC_ERROR;
705
706			c_setpat(el); /* Set search pattern !! */
707
708			for (h = 1; h < el->el_history.eventno && hp; h++) {
709			#ifdef SDEBUG
710			(void) fprintf(el->el_errfile, "Comparing with \"%s\"\n", hp);
711			#endif
712			if ((wcsncmp(hp, el->el_line.buffer, (size_t)
713			(el->el_line.lastchar - el->el_line.buffer)) \|\|
714			hp[el->el_line.lastchar - el->el_line.buffer]) &&
715			c_hmatch(el, hp))
716			found = h;
717			hp = HIST_NEXT(el);
718			}
719
720			if (!found) { /* is it the current history number? */
721			if (!c_hmatch(el, el->el_history.buf)) {
722			#ifdef SDEBUG
723			(void) fprintf(el->el_errfile, "not found\n");
724			#endif
725			return CC_ERROR;
726			}
727			}
728			el->el_history.eventno = found;
729
730			return hist_get(el);
731			}
732
733
734			/* ed_prev_line():
735			* Move up one line
736			* Could be [k] [^p]
737			*/
738			protected el_action_t
739			/ARGSUSED/
740			ed_prev_line(EditLine *el, wint_t c __attribute__((__unused__)))
741			{
742			wchar_t *ptr;
743			int nchars = c_hpos(el);
744
745			/*
746			* Move to the line requested
747			*/
748			if (*(ptr = el->el_line.cursor) == '\n')
749			ptr--;
750
751			for (; ptr >= el->el_line.buffer; ptr--)
752			if (*ptr == '\n' && --el->el_state.argument <= 0)
753			break;
754
755			if (el->el_state.argument > 0)
756			return CC_ERROR;
757
758			/*
759			* Move to the beginning of the line
760			*/
761			for (ptr--; ptr >= el->el_line.buffer && *ptr != '\n'; ptr--)
762			continue;
763
764			/*
765			* Move to the character requested
766			*/
767			for (ptr++;
768			nchars-- > 0 && ptr < el->el_line.lastchar && *ptr != '\n';
769			ptr++)
770			continue;
771
772			el->el_line.cursor = ptr;
773			return CC_CURSOR;
774			}
775
776
777			/* ed_next_line():
778			* Move down one line
779			* Could be [j] [^n]
780			*/
781			protected el_action_t
782			/ARGSUSED/
783			ed_next_line(EditLine *el, wint_t c __attribute__((__unused__)))
784			{
785			wchar_t *ptr;
786			int nchars = c_hpos(el);
787
788			/*
789			* Move to the line requested
790			*/
791			for (ptr = el->el_line.cursor; ptr < el->el_line.lastchar; ptr++)
792			if (*ptr == '\n' && --el->el_state.argument <= 0)
793			break;
794
795			if (el->el_state.argument > 0)
796			return CC_ERROR;
797
798			/*
799			* Move to the character requested
800			*/
801			for (ptr++;
802			nchars-- > 0 && ptr < el->el_line.lastchar && *ptr != '\n';
803			ptr++)
804			continue;
805
806			el->el_line.cursor = ptr;
807			return CC_CURSOR;
808			}
809
810
811			/* ed_command():
812			* Editline extended command
813			* [M-X] [:]
814			*/
815			protected el_action_t
816			/ARGSUSED/
817			ed_command(EditLine *el, wint_t c __attribute__((__unused__)))
818			{
819			wchar_t tmpbuf[EL_BUFSIZ];
820			int tmplen;
821
822			tmplen = c_gets(el, tmpbuf, L"\n: ");
823			terminal__putc(el, '\n');
824
825			if (tmplen < 0 \|\| (tmpbuf[tmplen] = 0, parse_line(el, tmpbuf)) == -1)
826			terminal_beep(el);
827
828			el->el_map.current = el->el_map.key;
829			re_clear_display(el);
830			return CC_REFRESH;
831			}