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vi.c revision 1.9
      1 /*	$NetBSD: vi.c,v 1.9 2002/03/18 16:01:01 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. All advertising materials mentioning features or use of this software
     19  *    must display the following acknowledgement:
     20  *	This product includes software developed by the University of
     21  *	California, Berkeley and its contributors.
     22  * 4. Neither the name of the University nor the names of its contributors
     23  *    may be used to endorse or promote products derived from this software
     24  *    without specific prior written permission.
     25  *
     26  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     27  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     28  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     29  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     30  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     31  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     32  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     33  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     34  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     35  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     36  * SUCH DAMAGE.
     37  */
     38 
     39 #include "config.h"
     40 #if !defined(lint) && !defined(SCCSID)
     41 #if 0
     42 static char sccsid[] = "@(#)vi.c	8.1 (Berkeley) 6/4/93";
     43 #else
     44 __RCSID("$NetBSD: vi.c,v 1.9 2002/03/18 16:01:01 christos Exp $");
     45 #endif
     46 #endif /* not lint && not SCCSID */
     47 
     48 /*
     49  * vi.c: Vi mode commands.
     50  */
     51 #include "el.h"
     52 
     53 private el_action_t	cv_action(EditLine *, int);
     54 private el_action_t	cv_paste(EditLine *, int);
     55 
     56 /* cv_action():
     57  *	Handle vi actions.
     58  */
     59 private el_action_t
     60 cv_action(EditLine *el, int c)
     61 {
     62 	char *cp, *kp;
     63 
     64 	if (el->el_chared.c_vcmd.action & DELETE) {
     65 		el->el_chared.c_vcmd.action = NOP;
     66 		el->el_chared.c_vcmd.pos = 0;
     67 
     68 		el->el_chared.c_undo.isize = 0;
     69 		el->el_chared.c_undo.dsize = 0;
     70 		kp = el->el_chared.c_undo.buf;
     71 		for (cp = el->el_line.buffer; cp < el->el_line.lastchar; cp++) {
     72 			*kp++ = *cp;
     73 			el->el_chared.c_undo.dsize++;
     74 		}
     75 
     76 		el->el_chared.c_undo.action = INSERT;
     77 		el->el_chared.c_undo.ptr = el->el_line.buffer;
     78 		el->el_line.lastchar = el->el_line.buffer;
     79 		el->el_line.cursor = el->el_line.buffer;
     80 		if (c & INSERT)
     81 			el->el_map.current = el->el_map.key;
     82 
     83 		return (CC_REFRESH);
     84 	}
     85 	el->el_chared.c_vcmd.pos = el->el_line.cursor;
     86 	el->el_chared.c_vcmd.action = c;
     87 	return (CC_ARGHACK);
     88 
     89 #ifdef notdef
     90 	/*
     91          * I don't think that this is needed. But we keep it for now
     92          */
     93 	else
     94 	if (el_chared.c_vcmd.action == NOP) {
     95 		el->el_chared.c_vcmd.pos = el->el_line.cursor;
     96 		el->el_chared.c_vcmd.action = c;
     97 		return (CC_ARGHACK);
     98 	} else {
     99 		el->el_chared.c_vcmd.action = 0;
    100 		el->el_chared.c_vcmd.pos = 0;
    101 		return (CC_ERROR);
    102 	}
    103 #endif
    104 }
    105 
    106 
    107 /* cv_paste():
    108  *	Paste previous deletion before or after the cursor
    109  */
    110 private el_action_t
    111 cv_paste(EditLine *el, int c)
    112 {
    113 	char *ptr;
    114 	c_undo_t *un = &el->el_chared.c_undo;
    115 
    116 #ifdef DEBUG_PASTE
    117 	(void) fprintf(el->el_errfile, "Paste: %x \"%s\" +%d -%d\n",
    118 	    un->action, un->buf, un->isize, un->dsize);
    119 #endif
    120 	if (un->isize == 0)
    121 		return (CC_ERROR);
    122 
    123 	if (!c && el->el_line.cursor < el->el_line.lastchar)
    124 		el->el_line.cursor++;
    125 	ptr = el->el_line.cursor;
    126 
    127 	c_insert(el, (int) un->isize);
    128 	if (el->el_line.cursor + un->isize > el->el_line.lastchar)
    129 		return (CC_ERROR);
    130 	(void) memcpy(ptr, un->buf, un->isize);
    131 	return (CC_REFRESH);
    132 }
    133 
    134 
    135 /* vi_paste_next():
    136  *	Vi paste previous deletion to the right of the cursor
    137  *	[p]
    138  */
    139 protected el_action_t
    140 /*ARGSUSED*/
    141 vi_paste_next(EditLine *el, int c)
    142 {
    143 
    144 	return (cv_paste(el, 0));
    145 }
    146 
    147 
    148 /* vi_paste_prev():
    149  *	Vi paste previous deletion to the left of the cursor
    150  *	[P]
    151  */
    152 protected el_action_t
    153 /*ARGSUSED*/
    154 vi_paste_prev(EditLine *el, int c)
    155 {
    156 
    157 	return (cv_paste(el, 1));
    158 }
    159 
    160 
    161 /* vi_prev_space_word():
    162  *	Vi move to the previous space delimited word
    163  *	[B]
    164  */
    165 protected el_action_t
    166 /*ARGSUSED*/
    167 vi_prev_space_word(EditLine *el, int c)
    168 {
    169 
    170 	if (el->el_line.cursor == el->el_line.buffer)
    171 		return (CC_ERROR);
    172 
    173 	el->el_line.cursor = cv_prev_word(el, el->el_line.cursor,
    174 	    el->el_line.buffer,
    175 	    el->el_state.argument,
    176 	    cv__isword);
    177 
    178 	if (el->el_chared.c_vcmd.action & DELETE) {
    179 		cv_delfini(el);
    180 		return (CC_REFRESH);
    181 	}
    182 	return (CC_CURSOR);
    183 }
    184 
    185 
    186 /* vi_prev_word():
    187  *	Vi move to the previous word
    188  *	[B]
    189  */
    190 protected el_action_t
    191 /*ARGSUSED*/
    192 vi_prev_word(EditLine *el, int c)
    193 {
    194 
    195 	if (el->el_line.cursor == el->el_line.buffer)
    196 		return (CC_ERROR);
    197 
    198 	el->el_line.cursor = cv_prev_word(el, el->el_line.cursor,
    199 	    el->el_line.buffer,
    200 	    el->el_state.argument,
    201 	    ce__isword);
    202 
    203 	if (el->el_chared.c_vcmd.action & DELETE) {
    204 		cv_delfini(el);
    205 		return (CC_REFRESH);
    206 	}
    207 	return (CC_CURSOR);
    208 }
    209 
    210 
    211 /* vi_next_space_word():
    212  *	Vi move to the next space delimited word
    213  *	[W]
    214  */
    215 protected el_action_t
    216 /*ARGSUSED*/
    217 vi_next_space_word(EditLine *el, int c)
    218 {
    219 
    220 	if (el->el_line.cursor == el->el_line.lastchar)
    221 		return (CC_ERROR);
    222 
    223 	el->el_line.cursor = cv_next_word(el, el->el_line.cursor,
    224 	    el->el_line.lastchar,
    225 	    el->el_state.argument,
    226 	    cv__isword);
    227 
    228 	if (el->el_map.type == MAP_VI)
    229 		if (el->el_chared.c_vcmd.action & DELETE) {
    230 			cv_delfini(el);
    231 			return (CC_REFRESH);
    232 		}
    233 	return (CC_CURSOR);
    234 }
    235 
    236 
    237 /* vi_next_word():
    238  *	Vi move to the next word
    239  *	[w]
    240  */
    241 protected el_action_t
    242 /*ARGSUSED*/
    243 vi_next_word(EditLine *el, int c)
    244 {
    245 
    246 	if (el->el_line.cursor == el->el_line.lastchar)
    247 		return (CC_ERROR);
    248 
    249 	el->el_line.cursor = cv_next_word(el, el->el_line.cursor,
    250 	    el->el_line.lastchar,
    251 	    el->el_state.argument,
    252 	    ce__isword);
    253 
    254 	if (el->el_map.type == MAP_VI)
    255 		if (el->el_chared.c_vcmd.action & DELETE) {
    256 			cv_delfini(el);
    257 			return (CC_REFRESH);
    258 		}
    259 	return (CC_CURSOR);
    260 }
    261 
    262 
    263 /* vi_change_case():
    264  *	Vi change case of character under the cursor and advance one character
    265  *	[~]
    266  */
    267 protected el_action_t
    268 vi_change_case(EditLine *el, int c)
    269 {
    270 
    271 	if (el->el_line.cursor < el->el_line.lastchar) {
    272 		c = *el->el_line.cursor;
    273 		if (isupper(c))
    274 			*el->el_line.cursor++ = tolower(c);
    275 		else if (islower(c))
    276 			*el->el_line.cursor++ = toupper(c);
    277 		else
    278 			el->el_line.cursor++;
    279 		re_fastaddc(el);
    280 		return (CC_NORM);
    281 	}
    282 	return (CC_ERROR);
    283 }
    284 
    285 
    286 /* vi_change_meta():
    287  *	Vi change prefix command
    288  *	[c]
    289  */
    290 protected el_action_t
    291 /*ARGSUSED*/
    292 vi_change_meta(EditLine *el, int c)
    293 {
    294 
    295 	/*
    296          * Delete with insert == change: first we delete and then we leave in
    297          * insert mode.
    298          */
    299 	return (cv_action(el, DELETE | INSERT));
    300 }
    301 
    302 
    303 /* vi_insert_at_bol():
    304  *	Vi enter insert mode at the beginning of line
    305  *	[I]
    306  */
    307 protected el_action_t
    308 /*ARGSUSED*/
    309 vi_insert_at_bol(EditLine *el, int c)
    310 {
    311 
    312 	el->el_line.cursor = el->el_line.buffer;
    313 	el->el_chared.c_vcmd.ins = el->el_line.cursor;
    314 
    315 	el->el_chared.c_undo.ptr = el->el_line.cursor;
    316 	el->el_chared.c_undo.action = DELETE;
    317 
    318 	el->el_map.current = el->el_map.key;
    319 	return (CC_CURSOR);
    320 }
    321 
    322 
    323 /* vi_replace_char():
    324  *	Vi replace character under the cursor with the next character typed
    325  *	[r]
    326  */
    327 protected el_action_t
    328 /*ARGSUSED*/
    329 vi_replace_char(EditLine *el, int c)
    330 {
    331 
    332 	el->el_map.current = el->el_map.key;
    333 	el->el_state.inputmode = MODE_REPLACE_1;
    334 	el->el_chared.c_undo.action = CHANGE;
    335 	el->el_chared.c_undo.ptr = el->el_line.cursor;
    336 	el->el_chared.c_undo.isize = 0;
    337 	el->el_chared.c_undo.dsize = 0;
    338 	return (CC_NORM);
    339 }
    340 
    341 
    342 /* vi_replace_mode():
    343  *	Vi enter replace mode
    344  *	[R]
    345  */
    346 protected el_action_t
    347 /*ARGSUSED*/
    348 vi_replace_mode(EditLine *el, int c)
    349 {
    350 
    351 	el->el_map.current = el->el_map.key;
    352 	el->el_state.inputmode = MODE_REPLACE;
    353 	el->el_chared.c_undo.action = CHANGE;
    354 	el->el_chared.c_undo.ptr = el->el_line.cursor;
    355 	el->el_chared.c_undo.isize = 0;
    356 	el->el_chared.c_undo.dsize = 0;
    357 	return (CC_NORM);
    358 }
    359 
    360 
    361 /* vi_substitute_char():
    362  *	Vi replace character under the cursor and enter insert mode
    363  *	[r]
    364  */
    365 protected el_action_t
    366 /*ARGSUSED*/
    367 vi_substitute_char(EditLine *el, int c)
    368 {
    369 
    370 	c_delafter(el, el->el_state.argument);
    371 	el->el_map.current = el->el_map.key;
    372 	return (CC_REFRESH);
    373 }
    374 
    375 
    376 /* vi_substitute_line():
    377  *	Vi substitute entire line
    378  *	[S]
    379  */
    380 protected el_action_t
    381 /*ARGSUSED*/
    382 vi_substitute_line(EditLine *el, int c)
    383 {
    384 
    385 	(void) em_kill_line(el, 0);
    386 	el->el_map.current = el->el_map.key;
    387 	return (CC_REFRESH);
    388 }
    389 
    390 
    391 /* vi_change_to_eol():
    392  *	Vi change to end of line
    393  *	[C]
    394  */
    395 protected el_action_t
    396 /*ARGSUSED*/
    397 vi_change_to_eol(EditLine *el, int c)
    398 {
    399 
    400 	(void) ed_kill_line(el, 0);
    401 	el->el_map.current = el->el_map.key;
    402 	return (CC_REFRESH);
    403 }
    404 
    405 
    406 /* vi_insert():
    407  *	Vi enter insert mode
    408  *	[i]
    409  */
    410 protected el_action_t
    411 /*ARGSUSED*/
    412 vi_insert(EditLine *el, int c)
    413 {
    414 
    415 	el->el_map.current = el->el_map.key;
    416 
    417 	el->el_chared.c_vcmd.ins = el->el_line.cursor;
    418 	el->el_chared.c_undo.ptr = el->el_line.cursor;
    419 	el->el_chared.c_undo.action = DELETE;
    420 
    421 	return (CC_NORM);
    422 }
    423 
    424 
    425 /* vi_add():
    426  *	Vi enter insert mode after the cursor
    427  *	[a]
    428  */
    429 protected el_action_t
    430 /*ARGSUSED*/
    431 vi_add(EditLine *el, int c)
    432 {
    433 	int ret;
    434 
    435 	el->el_map.current = el->el_map.key;
    436 	if (el->el_line.cursor < el->el_line.lastchar) {
    437 		el->el_line.cursor++;
    438 		if (el->el_line.cursor > el->el_line.lastchar)
    439 			el->el_line.cursor = el->el_line.lastchar;
    440 		ret = CC_CURSOR;
    441 	} else
    442 		ret = CC_NORM;
    443 
    444 	el->el_chared.c_vcmd.ins = el->el_line.cursor;
    445 	el->el_chared.c_undo.ptr = el->el_line.cursor;
    446 	el->el_chared.c_undo.action = DELETE;
    447 
    448 	return (ret);
    449 }
    450 
    451 
    452 /* vi_add_at_eol():
    453  *	Vi enter insert mode at end of line
    454  *	[A]
    455  */
    456 protected el_action_t
    457 /*ARGSUSED*/
    458 vi_add_at_eol(EditLine *el, int c)
    459 {
    460 
    461 	el->el_map.current = el->el_map.key;
    462 	el->el_line.cursor = el->el_line.lastchar;
    463 
    464 	/* Mark where insertion begins */
    465 	el->el_chared.c_vcmd.ins = el->el_line.lastchar;
    466 	el->el_chared.c_undo.ptr = el->el_line.lastchar;
    467 	el->el_chared.c_undo.action = DELETE;
    468 	return (CC_CURSOR);
    469 }
    470 
    471 
    472 /* vi_delete_meta():
    473  *	Vi delete prefix command
    474  *	[d]
    475  */
    476 protected el_action_t
    477 /*ARGSUSED*/
    478 vi_delete_meta(EditLine *el, int c)
    479 {
    480 
    481 	return (cv_action(el, DELETE));
    482 }
    483 
    484 
    485 /* vi_end_word():
    486  *	Vi move to the end of the current space delimited word
    487  *	[E]
    488  */
    489 protected el_action_t
    490 /*ARGSUSED*/
    491 vi_end_word(EditLine *el, int c)
    492 {
    493 
    494 	if (el->el_line.cursor == el->el_line.lastchar)
    495 		return (CC_ERROR);
    496 
    497 	el->el_line.cursor = cv__endword(el->el_line.cursor,
    498 	    el->el_line.lastchar, el->el_state.argument);
    499 
    500 	if (el->el_chared.c_vcmd.action & DELETE) {
    501 		el->el_line.cursor++;
    502 		cv_delfini(el);
    503 		return (CC_REFRESH);
    504 	}
    505 	return (CC_CURSOR);
    506 }
    507 
    508 
    509 /* vi_to_end_word():
    510  *	Vi move to the end of the current word
    511  *	[e]
    512  */
    513 protected el_action_t
    514 /*ARGSUSED*/
    515 vi_to_end_word(EditLine *el, int c)
    516 {
    517 
    518 	if (el->el_line.cursor == el->el_line.lastchar)
    519 		return (CC_ERROR);
    520 
    521 	el->el_line.cursor = cv__endword(el->el_line.cursor,
    522 	    el->el_line.lastchar, el->el_state.argument);
    523 
    524 	if (el->el_chared.c_vcmd.action & DELETE) {
    525 		el->el_line.cursor++;
    526 		cv_delfini(el);
    527 		return (CC_REFRESH);
    528 	}
    529 	return (CC_CURSOR);
    530 }
    531 
    532 
    533 /* vi_undo():
    534  *	Vi undo last change
    535  *	[u]
    536  */
    537 protected el_action_t
    538 /*ARGSUSED*/
    539 vi_undo(EditLine *el, int c)
    540 {
    541 	char *cp, *kp;
    542 	char temp;
    543 	int i, size;
    544 	c_undo_t *un = &el->el_chared.c_undo;
    545 
    546 #ifdef DEBUG_UNDO
    547 	(void) fprintf(el->el_errfile, "Undo: %x \"%s\" +%d -%d\n",
    548 	    un->action, un->buf, un->isize, un->dsize);
    549 #endif
    550 	switch (un->action) {
    551 	case DELETE:
    552 		if (un->dsize == 0)
    553 			return (CC_NORM);
    554 
    555 		(void) memcpy(un->buf, un->ptr, un->dsize);
    556 		for (cp = un->ptr; cp <= el->el_line.lastchar; cp++)
    557 			*cp = cp[un->dsize];
    558 
    559 		el->el_line.lastchar -= un->dsize;
    560 		el->el_line.cursor = un->ptr;
    561 
    562 		un->action = INSERT;
    563 		un->isize = un->dsize;
    564 		un->dsize = 0;
    565 		break;
    566 
    567 	case DELETE | INSERT:
    568 		size = un->isize - un->dsize;
    569 		if (size > 0)
    570 			i = un->dsize;
    571 		else
    572 			i = un->isize;
    573 		cp = un->ptr;
    574 		kp = un->buf;
    575 		while (i-- > 0) {
    576 			temp = *kp;
    577 			*kp++ = *cp;
    578 			*cp++ = temp;
    579 		}
    580 		if (size > 0) {
    581 			el->el_line.cursor = cp;
    582 			c_insert(el, size);
    583 			while (size-- > 0 && cp < el->el_line.lastchar) {
    584 				temp = *kp;
    585 				*kp++ = *cp;
    586 				*cp++ = temp;
    587 			}
    588 		} else if (size < 0) {
    589 			size = -size;
    590 			for (; cp <= el->el_line.lastchar; cp++) {
    591 				*kp++ = *cp;
    592 				*cp = cp[size];
    593 			}
    594 			el->el_line.lastchar -= size;
    595 		}
    596 		el->el_line.cursor = un->ptr;
    597 		i = un->dsize;
    598 		un->dsize = un->isize;
    599 		un->isize = i;
    600 		break;
    601 
    602 	case INSERT:
    603 		if (un->isize == 0)
    604 			return (CC_NORM);
    605 
    606 		el->el_line.cursor = un->ptr;
    607 		c_insert(el, (int) un->isize);
    608 		(void) memcpy(un->ptr, un->buf, un->isize);
    609 		un->action = DELETE;
    610 		un->dsize = un->isize;
    611 		un->isize = 0;
    612 		break;
    613 
    614 	case CHANGE:
    615 		if (un->isize == 0)
    616 			return (CC_NORM);
    617 
    618 		el->el_line.cursor = un->ptr;
    619 		size = (int) (el->el_line.cursor - el->el_line.lastchar);
    620 		if (size < un->isize)
    621 			size = un->isize;
    622 		cp = un->ptr;
    623 		kp = un->buf;
    624 		for (i = 0; i < size; i++) {
    625 			temp = *kp;
    626 			*kp++ = *cp;
    627 			*cp++ = temp;
    628 		}
    629 		un->dsize = 0;
    630 		break;
    631 
    632 	default:
    633 		return (CC_ERROR);
    634 	}
    635 
    636 	return (CC_REFRESH);
    637 }
    638 
    639 
    640 /* vi_command_mode():
    641  *	Vi enter command mode (use alternative key bindings)
    642  *	[<ESC>]
    643  */
    644 protected el_action_t
    645 /*ARGSUSED*/
    646 vi_command_mode(EditLine *el, int c)
    647 {
    648 	int size;
    649 
    650 	/* [Esc] cancels pending action */
    651 	el->el_chared.c_vcmd.ins = 0;
    652 	el->el_chared.c_vcmd.action = NOP;
    653 	el->el_chared.c_vcmd.pos = 0;
    654 
    655 	el->el_state.doingarg = 0;
    656 	size = el->el_chared.c_undo.ptr - el->el_line.cursor;
    657 	if (size < 0)
    658 		size = -size;
    659 	if (el->el_chared.c_undo.action == (INSERT | DELETE) ||
    660 	    el->el_chared.c_undo.action == DELETE)
    661 		el->el_chared.c_undo.dsize = size;
    662 	else
    663 		el->el_chared.c_undo.isize = size;
    664 
    665 	el->el_state.inputmode = MODE_INSERT;
    666 	el->el_map.current = el->el_map.alt;
    667 #ifdef VI_MOVE
    668 	if (el->el_line.cursor > el->el_line.buffer)
    669 		el->el_line.cursor--;
    670 #endif
    671 	return (CC_CURSOR);
    672 }
    673 
    674 
    675 /* vi_zero():
    676  *	Vi move to the beginning of line
    677  *	[0]
    678  */
    679 protected el_action_t
    680 vi_zero(EditLine *el, int c)
    681 {
    682 
    683 	if (el->el_state.doingarg) {
    684 		if (el->el_state.argument > 1000000)
    685 			return (CC_ERROR);
    686 		el->el_state.argument =
    687 		    (el->el_state.argument * 10) + (c - '0');
    688 		return (CC_ARGHACK);
    689 	} else {
    690 		el->el_line.cursor = el->el_line.buffer;
    691 		if (el->el_chared.c_vcmd.action & DELETE) {
    692 			cv_delfini(el);
    693 			return (CC_REFRESH);
    694 		}
    695 		return (CC_CURSOR);
    696 	}
    697 }
    698 
    699 
    700 /* vi_delete_prev_char():
    701  * 	Vi move to previous character (backspace)
    702  *	[^H]
    703  */
    704 protected el_action_t
    705 /*ARGSUSED*/
    706 vi_delete_prev_char(EditLine *el, int c)
    707 {
    708 
    709 	if (el->el_chared.c_vcmd.ins == 0)
    710 		return (CC_ERROR);
    711 
    712 	if (el->el_chared.c_vcmd.ins >
    713 	    el->el_line.cursor - el->el_state.argument)
    714 		return (CC_ERROR);
    715 
    716 	c_delbefore(el, el->el_state.argument);
    717 	el->el_line.cursor -= el->el_state.argument;
    718 
    719 	return (CC_REFRESH);
    720 }
    721 
    722 
    723 /* vi_list_or_eof():
    724  *	Vi list choices for completion or indicate end of file if empty line
    725  *	[^D]
    726  */
    727 protected el_action_t
    728 /*ARGSUSED*/
    729 vi_list_or_eof(EditLine *el, int c)
    730 {
    731 
    732 #ifdef notyet
    733 	if (el->el_line.cursor == el->el_line.lastchar &&
    734 	    el->el_line.cursor == el->el_line.buffer) {
    735 #endif
    736 		term_overwrite(el, STReof, 4);	/* then do a EOF */
    737 		term__flush();
    738 		return (CC_EOF);
    739 #ifdef notyet
    740 	} else {
    741 		re_goto_bottom(el);
    742 		*el->el_line.lastchar = '\0';	/* just in case */
    743 		return (CC_LIST_CHOICES);
    744 	}
    745 #endif
    746 }
    747 
    748 
    749 /* vi_kill_line_prev():
    750  *	Vi cut from beginning of line to cursor
    751  *	[^U]
    752  */
    753 protected el_action_t
    754 /*ARGSUSED*/
    755 vi_kill_line_prev(EditLine *el, int c)
    756 {
    757 	char *kp, *cp;
    758 
    759 	cp = el->el_line.buffer;
    760 	kp = el->el_chared.c_kill.buf;
    761 	while (cp < el->el_line.cursor)
    762 		*kp++ = *cp++;	/* copy it */
    763 	el->el_chared.c_kill.last = kp;
    764 	c_delbefore(el, el->el_line.cursor - el->el_line.buffer);
    765 	el->el_line.cursor = el->el_line.buffer;	/* zap! */
    766 	return (CC_REFRESH);
    767 }
    768 
    769 
    770 /* vi_search_prev():
    771  *	Vi search history previous
    772  *	[?]
    773  */
    774 protected el_action_t
    775 /*ARGSUSED*/
    776 vi_search_prev(EditLine *el, int c)
    777 {
    778 
    779 	return (cv_search(el, ED_SEARCH_PREV_HISTORY));
    780 }
    781 
    782 
    783 /* vi_search_next():
    784  *	Vi search history next
    785  *	[/]
    786  */
    787 protected el_action_t
    788 /*ARGSUSED*/
    789 vi_search_next(EditLine *el, int c)
    790 {
    791 
    792 	return (cv_search(el, ED_SEARCH_NEXT_HISTORY));
    793 }
    794 
    795 
    796 /* vi_repeat_search_next():
    797  *	Vi repeat current search in the same search direction
    798  *	[n]
    799  */
    800 protected el_action_t
    801 /*ARGSUSED*/
    802 vi_repeat_search_next(EditLine *el, int c)
    803 {
    804 
    805 	if (el->el_search.patlen == 0)
    806 		return (CC_ERROR);
    807 	else
    808 		return (cv_repeat_srch(el, el->el_search.patdir));
    809 }
    810 
    811 
    812 /* vi_repeat_search_prev():
    813  *	Vi repeat current search in the opposite search direction
    814  *	[N]
    815  */
    816 /*ARGSUSED*/
    817 protected el_action_t
    818 vi_repeat_search_prev(EditLine *el, int c)
    819 {
    820 
    821 	if (el->el_search.patlen == 0)
    822 		return (CC_ERROR);
    823 	else
    824 		return (cv_repeat_srch(el,
    825 		    el->el_search.patdir == ED_SEARCH_PREV_HISTORY ?
    826 		    ED_SEARCH_NEXT_HISTORY : ED_SEARCH_PREV_HISTORY));
    827 }
    828 
    829 
    830 /* vi_next_char():
    831  *	Vi move to the character specified next
    832  *	[f]
    833  */
    834 protected el_action_t
    835 /*ARGSUSED*/
    836 vi_next_char(EditLine *el, int c)
    837 {
    838 	char ch;
    839 
    840 	if (el_getc(el, &ch) != 1)
    841 		return (ed_end_of_file(el, 0));
    842 
    843 	el->el_search.chadir = CHAR_FWD;
    844 	el->el_search.chacha = ch;
    845 
    846 	return (cv_csearch_fwd(el, ch, el->el_state.argument, 0));
    847 
    848 }
    849 
    850 
    851 /* vi_prev_char():
    852  *	Vi move to the character specified previous
    853  *	[F]
    854  */
    855 protected el_action_t
    856 /*ARGSUSED*/
    857 vi_prev_char(EditLine *el, int c)
    858 {
    859 	char ch;
    860 
    861 	if (el_getc(el, &ch) != 1)
    862 		return (ed_end_of_file(el, 0));
    863 
    864 	el->el_search.chadir = CHAR_BACK;
    865 	el->el_search.chacha = ch;
    866 
    867 	return (cv_csearch_back(el, ch, el->el_state.argument, 0));
    868 }
    869 
    870 
    871 /* vi_to_next_char():
    872  *	Vi move up to the character specified next
    873  *	[t]
    874  */
    875 protected el_action_t
    876 /*ARGSUSED*/
    877 vi_to_next_char(EditLine *el, int c)
    878 {
    879 	char ch;
    880 
    881 	if (el_getc(el, &ch) != 1)
    882 		return (ed_end_of_file(el, 0));
    883 
    884 	return (cv_csearch_fwd(el, ch, el->el_state.argument, 1));
    885 
    886 }
    887 
    888 
    889 /* vi_to_prev_char():
    890  *	Vi move up to the character specified previous
    891  *	[T]
    892  */
    893 protected el_action_t
    894 /*ARGSUSED*/
    895 vi_to_prev_char(EditLine *el, int c)
    896 {
    897 	char ch;
    898 
    899 	if (el_getc(el, &ch) != 1)
    900 		return (ed_end_of_file(el, 0));
    901 
    902 	return (cv_csearch_back(el, ch, el->el_state.argument, 1));
    903 }
    904 
    905 
    906 /* vi_repeat_next_char():
    907  *	Vi repeat current character search in the same search direction
    908  *	[;]
    909  */
    910 protected el_action_t
    911 /*ARGSUSED*/
    912 vi_repeat_next_char(EditLine *el, int c)
    913 {
    914 
    915 	if (el->el_search.chacha == 0)
    916 		return (CC_ERROR);
    917 
    918 	return (el->el_search.chadir == CHAR_FWD
    919 	    ? cv_csearch_fwd(el, el->el_search.chacha,
    920 		el->el_state.argument, 0)
    921 	    : cv_csearch_back(el, el->el_search.chacha,
    922 		el->el_state.argument, 0));
    923 }
    924 
    925 
    926 /* vi_repeat_prev_char():
    927  *	Vi repeat current character search in the opposite search direction
    928  *	[,]
    929  */
    930 protected el_action_t
    931 /*ARGSUSED*/
    932 vi_repeat_prev_char(EditLine *el, int c)
    933 {
    934 
    935 	if (el->el_search.chacha == 0)
    936 		return (CC_ERROR);
    937 
    938 	return el->el_search.chadir == CHAR_BACK ?
    939 	    cv_csearch_fwd(el, el->el_search.chacha, el->el_state.argument, 0) :
    940 	    cv_csearch_back(el, el->el_search.chacha, el->el_state.argument, 0);
    941 }
    942