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      1 /*	$NetBSD: search.c,v 1.52 2024/06/30 16:26:30 christos Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 1992, 1993
      5  *	The Regents of the University of California.  All rights reserved.
      6  *
      7  * This code is derived from software contributed to Berkeley by
      8  * Christos Zoulas of Cornell University.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  * 3. Neither the name of the University nor the names of its contributors
     19  *    may be used to endorse or promote products derived from this software
     20  *    without specific prior written permission.
     21  *
     22  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     23  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     24  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     25  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     26  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     27  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     28  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     29  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     30  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     31  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     32  * SUCH DAMAGE.
     33  */
     34 
     35 #include "config.h"
     36 #if !defined(lint) && !defined(SCCSID)
     37 #if 0
     38 static char sccsid[] = "@(#)search.c	8.1 (Berkeley) 6/4/93";
     39 #else
     40 __RCSID("$NetBSD: search.c,v 1.52 2024/06/30 16:26:30 christos Exp $");
     41 #endif
     42 #endif /* not lint && not SCCSID */
     43 
     44 /*
     45  * search.c: History and character search functions
     46  */
     47 #include <stdlib.h>
     48 #include <string.h>
     49 #if defined(REGEX)
     50 #include <regex.h>
     51 #elif defined(REGEXP)
     52 #include <regexp.h>
     53 #endif
     54 
     55 #include "el.h"
     56 #include "common.h"
     57 #include "fcns.h"
     58 
     59 /*
     60  * Adjust cursor in vi mode to include the character under it
     61  */
     62 #define	EL_CURSOR(el) \
     63     ((el)->el_line.cursor + (((el)->el_map.type == MAP_VI) && \
     64 			    ((el)->el_map.current == (el)->el_map.alt)))
     65 
     66 /* search_init():
     67  *	Initialize the search stuff
     68  */
     69 libedit_private int
     70 search_init(EditLine *el)
     71 {
     72 
     73 	el->el_search.patbuf = el_calloc(EL_BUFSIZ,
     74 	    sizeof(*el->el_search.patbuf));
     75 	if (el->el_search.patbuf == NULL)
     76 		return -1;
     77 	el->el_search.patbuf[0] = L'\0';
     78 	el->el_search.patlen = 0;
     79 	el->el_search.patdir = -1;
     80 	el->el_search.chacha = L'\0';
     81 	el->el_search.chadir = CHAR_FWD;
     82 	el->el_search.chatflg = 0;
     83 	return 0;
     84 }
     85 
     86 
     87 /* search_end():
     88  *	Initialize the search stuff
     89  */
     90 libedit_private void
     91 search_end(EditLine *el)
     92 {
     93 
     94 	el_free(el->el_search.patbuf);
     95 	el->el_search.patbuf = NULL;
     96 }
     97 
     98 
     99 #ifdef REGEXP
    100 /* regerror():
    101  *	Handle regular expression errors
    102  */
    103 void
    104 /*ARGSUSED*/
    105 regerror(const char *msg)
    106 {
    107 }
    108 #endif
    109 
    110 
    111 /* el_match():
    112  *	Return if string matches pattern
    113  */
    114 libedit_private int
    115 el_match(const wchar_t *str, const wchar_t *pat)
    116 {
    117 	static ct_buffer_t conv;
    118 #if defined (REGEX)
    119 	regex_t re;
    120 	int rv;
    121 #elif defined (REGEXP)
    122 	regexp *rp;
    123 	int rv;
    124 #else
    125 	extern char	*re_comp(const char *);
    126 	extern int	 re_exec(const char *);
    127 #endif
    128 
    129 	if (wcsstr(str, pat) != 0)
    130 		return 1;
    131 
    132 #if defined(REGEX)
    133 	if (regcomp(&re, ct_encode_string(pat, &conv), 0) == 0) {
    134 		rv = regexec(&re, ct_encode_string(str, &conv), (size_t)0, NULL,
    135 		    0) == 0;
    136 		regfree(&re);
    137 	} else {
    138 		rv = 0;
    139 	}
    140 	return rv;
    141 #elif defined(REGEXP)
    142 	if ((re = regcomp(ct_encode_string(pat, &conv))) != NULL) {
    143 		rv = regexec(re, ct_encode_string(str, &conv));
    144 		el_free(re);
    145 	} else {
    146 		rv = 0;
    147 	}
    148 	return rv;
    149 #else
    150 	if (re_comp(ct_encode_string(pat, &conv)) != NULL)
    151 		return 0;
    152 	else
    153 		return re_exec(ct_encode_string(str, &conv)) == 1;
    154 #endif
    155 }
    156 
    157 
    158 /* c_hmatch():
    159  *	 return True if the pattern matches the prefix
    160  */
    161 libedit_private int
    162 c_hmatch(EditLine *el, const wchar_t *str)
    163 {
    164 #ifdef SDEBUG
    165 	(void) fprintf(el->el_errfile, "match `%ls' with `%ls'\n",
    166 	    el->el_search.patbuf, str);
    167 #endif /* SDEBUG */
    168 
    169 	return el_match(str, el->el_search.patbuf);
    170 }
    171 
    172 
    173 /* c_setpat():
    174  *	Set the history seatch pattern
    175  */
    176 libedit_private void
    177 c_setpat(EditLine *el)
    178 {
    179 	if (el->el_state.lastcmd != ED_SEARCH_PREV_HISTORY &&
    180 	    el->el_state.lastcmd != ED_SEARCH_NEXT_HISTORY) {
    181 		el->el_search.patlen =
    182 		    (size_t)(EL_CURSOR(el) - el->el_line.buffer);
    183 		if (el->el_search.patlen >= EL_BUFSIZ)
    184 			el->el_search.patlen = EL_BUFSIZ - 1;
    185 		(void) wcsncpy(el->el_search.patbuf, el->el_line.buffer,
    186 		    el->el_search.patlen);
    187 		el->el_search.patbuf[el->el_search.patlen] = '\0';
    188 	}
    189 #ifdef SDEBUG
    190 	(void) fprintf(el->el_errfile, "\neventno = %d\n",
    191 	    el->el_history.eventno);
    192 	(void) fprintf(el->el_errfile, "patlen = %ld\n", el->el_search.patlen);
    193 	(void) fprintf(el->el_errfile, "patbuf = \"%ls\"\n",
    194 	    el->el_search.patbuf);
    195 	(void) fprintf(el->el_errfile, "cursor %ld lastchar %ld\n",
    196 	    EL_CURSOR(el) - el->el_line.buffer,
    197 	    el->el_line.lastchar - el->el_line.buffer);
    198 #endif
    199 }
    200 
    201 
    202 /* ce_inc_search():
    203  *	Emacs incremental search
    204  */
    205 libedit_private el_action_t
    206 ce_inc_search(EditLine *el, int dir)
    207 {
    208 	static const wchar_t STRfwd[] = L"fwd", STRbck[] = L"bck";
    209 	static wchar_t pchar = L':';  /* ':' = normal, '?' = failed */
    210 	static wchar_t endcmd[2] = {'\0', '\0'};
    211 	wchar_t *ocursor = el->el_line.cursor, oldpchar = pchar, ch;
    212 	const wchar_t *cp;
    213 
    214 	el_action_t ret = CC_NORM;
    215 
    216 	int ohisteventno = el->el_history.eventno;
    217 	size_t oldpatlen = el->el_search.patlen;
    218 	int newdir = dir;
    219 	int done, redo;
    220 
    221 	if (el->el_line.lastchar + sizeof(STRfwd) /
    222 	    sizeof(*el->el_line.lastchar) + 2 +
    223 	    el->el_search.patlen >= el->el_line.limit)
    224 		return CC_ERROR;
    225 
    226 	for (;;) {
    227 
    228 		if (el->el_search.patlen == 0) {	/* first round */
    229 			pchar = ':';
    230 #ifdef ANCHOR
    231 #define	LEN	2
    232 			el->el_search.patbuf[el->el_search.patlen++] = '.';
    233 			el->el_search.patbuf[el->el_search.patlen++] = '*';
    234 #else
    235 #define	LEN	0
    236 #endif
    237 		}
    238 		done = redo = 0;
    239 		*el->el_line.lastchar++ = '\n';
    240 		for (cp = (newdir == ED_SEARCH_PREV_HISTORY) ? STRbck : STRfwd;
    241 		    *cp; *el->el_line.lastchar++ = *cp++)
    242 			continue;
    243 		*el->el_line.lastchar++ = pchar;
    244 		for (cp = &el->el_search.patbuf[LEN];
    245 		    cp < &el->el_search.patbuf[el->el_search.patlen];
    246 		    *el->el_line.lastchar++ = *cp++)
    247 			continue;
    248 		*el->el_line.lastchar = '\0';
    249 		re_refresh(el);
    250 
    251 		if (el_wgetc(el, &ch) != 1)
    252 			return ed_end_of_file(el, 0);
    253 
    254 		switch (el->el_map.current[(unsigned char) ch]) {
    255 		case ED_INSERT:
    256 		case ED_DIGIT:
    257 			if (el->el_search.patlen >= EL_BUFSIZ - LEN)
    258 				terminal_beep(el);
    259 			else {
    260 				el->el_search.patbuf[el->el_search.patlen++] =
    261 				    ch;
    262 				*el->el_line.lastchar++ = ch;
    263 				*el->el_line.lastchar = '\0';
    264 				re_refresh(el);
    265 			}
    266 			break;
    267 
    268 		case EM_INC_SEARCH_NEXT:
    269 			newdir = ED_SEARCH_NEXT_HISTORY;
    270 			redo++;
    271 			break;
    272 
    273 		case EM_INC_SEARCH_PREV:
    274 			newdir = ED_SEARCH_PREV_HISTORY;
    275 			redo++;
    276 			break;
    277 
    278 		case EM_DELETE_PREV_CHAR:
    279 		case ED_DELETE_PREV_CHAR:
    280 			if (el->el_search.patlen > LEN)
    281 				done++;
    282 			else
    283 				terminal_beep(el);
    284 			break;
    285 
    286 		default:
    287 			switch (ch) {
    288 			case 0007:	/* ^G: Abort */
    289 				ret = CC_ERROR;
    290 				done++;
    291 				break;
    292 
    293 			case 0027:	/* ^W: Append word */
    294 			/* No can do if globbing characters in pattern */
    295 				for (cp = &el->el_search.patbuf[LEN];; cp++)
    296 				    if (cp >= &el->el_search.patbuf[
    297 					el->el_search.patlen]) {
    298 					if (el->el_line.cursor ==
    299 					    el->el_line.buffer)
    300 						break;
    301 					el->el_line.cursor +=
    302 					    el->el_search.patlen - LEN - 1;
    303 					cp = c__next_word(el->el_line.cursor,
    304 					    el->el_line.lastchar, 1,
    305 					    ce__isword);
    306 					while (el->el_line.cursor < cp &&
    307 					    *el->el_line.cursor != '\n') {
    308 						if (el->el_search.patlen >=
    309 						    EL_BUFSIZ - LEN) {
    310 							terminal_beep(el);
    311 							break;
    312 						}
    313 						el->el_search.patbuf[el->el_search.patlen++] =
    314 						    *el->el_line.cursor;
    315 						*el->el_line.lastchar++ =
    316 						    *el->el_line.cursor++;
    317 					}
    318 					el->el_line.cursor = ocursor;
    319 					*el->el_line.lastchar = '\0';
    320 					re_refresh(el);
    321 					break;
    322 				    } else if (isglob(*cp)) {
    323 					    terminal_beep(el);
    324 					    break;
    325 				    }
    326 				break;
    327 
    328 			default:	/* Terminate and execute cmd */
    329 				endcmd[0] = ch;
    330 				el_wpush(el, endcmd);
    331 				/* FALLTHROUGH */
    332 
    333 			case 0033:	/* ESC: Terminate */
    334 				ret = CC_REFRESH;
    335 				done++;
    336 				break;
    337 			}
    338 			break;
    339 		}
    340 
    341 		while (el->el_line.lastchar > el->el_line.buffer &&
    342 		    *el->el_line.lastchar != '\n')
    343 			*el->el_line.lastchar-- = '\0';
    344 		*el->el_line.lastchar = '\0';
    345 
    346 		if (!done) {
    347 
    348 			/* Can't search if unmatched '[' */
    349 			for (cp = &el->el_search.patbuf[el->el_search.patlen-1],
    350 			    ch = L']';
    351 			    cp >= &el->el_search.patbuf[LEN];
    352 			    cp--)
    353 				if (*cp == '[' || *cp == ']') {
    354 					ch = *cp;
    355 					break;
    356 				}
    357 			if (el->el_search.patlen > LEN && ch != L'[') {
    358 				if (redo && newdir == dir) {
    359 					if (pchar == '?') { /* wrap around */
    360 						el->el_history.eventno =
    361 						    newdir == ED_SEARCH_PREV_HISTORY ? 0 : 0x7fffffff;
    362 						if (hist_get(el) == CC_ERROR)
    363 							/* el->el_history.event
    364 							 * no was fixed by
    365 							 * first call */
    366 							(void) hist_get(el);
    367 						el->el_line.cursor = newdir ==
    368 						    ED_SEARCH_PREV_HISTORY ?
    369 						    el->el_line.lastchar :
    370 						    el->el_line.buffer;
    371 					} else
    372 						el->el_line.cursor +=
    373 						    newdir ==
    374 						    ED_SEARCH_PREV_HISTORY ?
    375 						    -1 : 1;
    376 				}
    377 #ifdef ANCHOR
    378 				el->el_search.patbuf[el->el_search.patlen++] =
    379 				    '.';
    380 				el->el_search.patbuf[el->el_search.patlen++] =
    381 				    '*';
    382 #endif
    383 				el->el_search.patbuf[el->el_search.patlen] =
    384 				    '\0';
    385 				if (el->el_line.cursor < el->el_line.buffer ||
    386 				    el->el_line.cursor > el->el_line.lastchar ||
    387 				    (ret = ce_search_line(el, newdir))
    388 				    == CC_ERROR) {
    389 					/* avoid c_setpat */
    390 					el->el_state.lastcmd =
    391 					    (el_action_t) newdir;
    392 					ret = (el_action_t)
    393 					    (newdir == ED_SEARCH_PREV_HISTORY ?
    394 					    ed_search_prev_history(el, 0) :
    395 					    ed_search_next_history(el, 0));
    396 					if (ret != CC_ERROR) {
    397 						el->el_line.cursor = newdir ==
    398 						    ED_SEARCH_PREV_HISTORY ?
    399 						    el->el_line.lastchar :
    400 						    el->el_line.buffer;
    401 						(void) ce_search_line(el,
    402 						    newdir);
    403 					}
    404 				}
    405 				el->el_search.patlen -= LEN;
    406 				el->el_search.patbuf[el->el_search.patlen] =
    407 				    '\0';
    408 				if (ret == CC_ERROR) {
    409 					terminal_beep(el);
    410 					if (el->el_history.eventno !=
    411 					    ohisteventno) {
    412 						el->el_history.eventno =
    413 						    ohisteventno;
    414 						if (hist_get(el) == CC_ERROR)
    415 							return CC_ERROR;
    416 					}
    417 					el->el_line.cursor = ocursor;
    418 					pchar = '?';
    419 				} else {
    420 					pchar = ':';
    421 				}
    422 			}
    423 			ret = ce_inc_search(el, newdir);
    424 
    425 			if (ret == CC_ERROR && pchar == '?' && oldpchar == ':')
    426 				/*
    427 				 * break abort of failed search at last
    428 				 * non-failed
    429 				 */
    430 				ret = CC_NORM;
    431 
    432 		}
    433 		if (ret == CC_NORM || (ret == CC_ERROR && oldpatlen == 0)) {
    434 			/* restore on normal return or error exit */
    435 			pchar = oldpchar;
    436 			el->el_search.patlen = oldpatlen;
    437 			if (el->el_history.eventno != ohisteventno) {
    438 				el->el_history.eventno = ohisteventno;
    439 				if (hist_get(el) == CC_ERROR)
    440 					return CC_ERROR;
    441 			}
    442 			el->el_line.cursor = ocursor;
    443 			if (ret == CC_ERROR)
    444 				re_refresh(el);
    445 		}
    446 		if (done || ret != CC_NORM)
    447 			return ret;
    448 	}
    449 }
    450 
    451 
    452 /* cv_search():
    453  *	Vi search.
    454  */
    455 libedit_private el_action_t
    456 cv_search(EditLine *el, int dir)
    457 {
    458 	wchar_t ch;
    459 	wchar_t tmpbuf[EL_BUFSIZ];
    460 	ssize_t tmplen;
    461 
    462 #ifdef ANCHOR
    463 	tmpbuf[0] = '.';
    464 	tmpbuf[1] = '*';
    465 #endif
    466 	tmplen = LEN;
    467 
    468 	el->el_search.patdir = dir;
    469 
    470 	tmplen = c_gets(el, &tmpbuf[LEN],
    471 		dir == ED_SEARCH_PREV_HISTORY ? L"\n/" : L"\n?" );
    472 	if (tmplen == -1)
    473 		return CC_REFRESH;
    474 
    475 	tmplen += LEN;
    476 	ch = tmpbuf[tmplen];
    477 	tmpbuf[tmplen] = '\0';
    478 
    479 	if (tmplen == LEN) {
    480 		/*
    481 		 * Use the old pattern, but wild-card it.
    482 		 */
    483 		if (el->el_search.patlen == 0) {
    484 			re_refresh(el);
    485 			return CC_ERROR;
    486 		}
    487 #ifdef ANCHOR
    488 		if (el->el_search.patbuf[0] != '.' &&
    489 		    el->el_search.patbuf[0] != '*') {
    490 			(void) wcsncpy(tmpbuf, el->el_search.patbuf,
    491 			    sizeof(tmpbuf) / sizeof(*tmpbuf) - 1);
    492 			el->el_search.patbuf[0] = '.';
    493 			el->el_search.patbuf[1] = '*';
    494 			(void) wcsncpy(&el->el_search.patbuf[2], tmpbuf,
    495 			    EL_BUFSIZ - 3);
    496 			el->el_search.patlen++;
    497 			el->el_search.patbuf[el->el_search.patlen++] = '.';
    498 			el->el_search.patbuf[el->el_search.patlen++] = '*';
    499 			el->el_search.patbuf[el->el_search.patlen] = '\0';
    500 		}
    501 #endif
    502 	} else {
    503 #ifdef ANCHOR
    504 		tmpbuf[tmplen++] = '.';
    505 		tmpbuf[tmplen++] = '*';
    506 #endif
    507 		tmpbuf[tmplen] = '\0';
    508 		(void) wcsncpy(el->el_search.patbuf, tmpbuf, EL_BUFSIZ - 1);
    509 		el->el_search.patlen = (size_t)tmplen;
    510 	}
    511 	el->el_state.lastcmd = (el_action_t) dir;	/* avoid c_setpat */
    512 	el->el_line.cursor = el->el_line.lastchar = el->el_line.buffer;
    513 	if ((dir == ED_SEARCH_PREV_HISTORY ? ed_search_prev_history(el, 0) :
    514 	    ed_search_next_history(el, 0)) == CC_ERROR) {
    515 		re_refresh(el);
    516 		return CC_ERROR;
    517 	}
    518 	if (ch == 0033) {
    519 		re_refresh(el);
    520 		return ed_newline(el, 0);
    521 	}
    522 	return CC_REFRESH;
    523 }
    524 
    525 
    526 /* ce_search_line():
    527  *	Look for a pattern inside a line
    528  */
    529 libedit_private el_action_t
    530 ce_search_line(EditLine *el, int dir)
    531 {
    532 	wchar_t *cp = el->el_line.cursor;
    533 	wchar_t *pattern = el->el_search.patbuf;
    534 	wchar_t oc, *ocp;
    535 #ifdef ANCHOR
    536 	ocp = &pattern[1];
    537 	oc = *ocp;
    538 	*ocp = '^';
    539 #else
    540 	ocp = pattern;
    541 	oc = *ocp;
    542 #endif
    543 
    544 	if (dir == ED_SEARCH_PREV_HISTORY) {
    545 		for (; cp >= el->el_line.buffer; cp--) {
    546 			if (el_match(cp, ocp)) {
    547 				*ocp = oc;
    548 				el->el_line.cursor = cp;
    549 				return CC_NORM;
    550 			}
    551 		}
    552 		*ocp = oc;
    553 		return CC_ERROR;
    554 	} else {
    555 		for (; *cp != '\0' && cp < el->el_line.limit; cp++) {
    556 			if (el_match(cp, ocp)) {
    557 				*ocp = oc;
    558 				el->el_line.cursor = cp;
    559 				return CC_NORM;
    560 			}
    561 		}
    562 		*ocp = oc;
    563 		return CC_ERROR;
    564 	}
    565 }
    566 
    567 
    568 /* cv_repeat_srch():
    569  *	Vi repeat search
    570  */
    571 libedit_private el_action_t
    572 cv_repeat_srch(EditLine *el, wint_t c)
    573 {
    574 
    575 #ifdef SDEBUG
    576 	static ct_buffer_t conv;
    577 	(void) fprintf(el->el_errfile, "dir %d patlen %ld patbuf %s\n",
    578 	    c, el->el_search.patlen, ct_encode_string(el->el_search.patbuf, &conv));
    579 #endif
    580 
    581 	el->el_state.lastcmd = (el_action_t) c;	/* Hack to stop c_setpat */
    582 	el->el_line.lastchar = el->el_line.buffer;
    583 
    584 	switch (c) {
    585 	case ED_SEARCH_NEXT_HISTORY:
    586 		return ed_search_next_history(el, 0);
    587 	case ED_SEARCH_PREV_HISTORY:
    588 		return ed_search_prev_history(el, 0);
    589 	default:
    590 		return CC_ERROR;
    591 	}
    592 }
    593 
    594 
    595 /* cv_csearch():
    596  *	Vi character search
    597  */
    598 libedit_private el_action_t
    599 cv_csearch(EditLine *el, int direction, wint_t ch, int count, int tflag)
    600 {
    601 	wchar_t *cp;
    602 
    603 	if (ch == 0)
    604 		return CC_ERROR;
    605 
    606 	if (ch == (wint_t)-1) {
    607 		wchar_t c;
    608 		if (el_wgetc(el, &c) != 1)
    609 			return ed_end_of_file(el, 0);
    610 		ch = c;
    611 	}
    612 
    613 	/* Save for ';' and ',' commands */
    614 	el->el_search.chacha = ch;
    615 	el->el_search.chadir = direction;
    616 	el->el_search.chatflg = (char)tflag;
    617 
    618 	cp = el->el_line.cursor;
    619 	while (count--) {
    620 		if ((wint_t)*cp == ch)
    621 			cp += direction;
    622 		for (;;cp += direction) {
    623 			if (cp >= el->el_line.lastchar)
    624 				return CC_ERROR;
    625 			if (cp < el->el_line.buffer)
    626 				return CC_ERROR;
    627 			if ((wint_t)*cp == ch)
    628 				break;
    629 		}
    630 	}
    631 
    632 	if (tflag)
    633 		cp -= direction;
    634 
    635 	el->el_line.cursor = cp;
    636 
    637 	if (el->el_chared.c_vcmd.action != NOP) {
    638 		if (direction > 0)
    639 			el->el_line.cursor++;
    640 		cv_delfini(el);
    641 		return CC_REFRESH;
    642 	}
    643 	return CC_CURSOR;
    644 }
    645