[14301] | 1 | /*- |
---|
| 2 | * Copyright (c) 1992, 1993, 1994 |
---|
| 3 | * The Regents of the University of California. All rights reserved. |
---|
| 4 | * Copyright (c) 1992, 1993, 1994, 1995, 1996 |
---|
| 5 | * Keith Bostic. All rights reserved. |
---|
| 6 | * |
---|
| 7 | * See the LICENSE file for redistribution information. |
---|
| 8 | */ |
---|
| 9 | |
---|
| 10 | #include "config.h" |
---|
| 11 | |
---|
| 12 | #ifndef lint |
---|
| 13 | static const char sccsid[] = "@(#)v_word.c 10.5 (Berkeley) 3/6/96"; |
---|
| 14 | #endif /* not lint */ |
---|
| 15 | |
---|
| 16 | #include <sys/types.h> |
---|
| 17 | #include <sys/queue.h> |
---|
| 18 | #include <sys/time.h> |
---|
| 19 | |
---|
| 20 | #include <bitstring.h> |
---|
| 21 | #include <ctype.h> |
---|
| 22 | #include <limits.h> |
---|
| 23 | #include <stdio.h> |
---|
| 24 | |
---|
| 25 | #include "../common/common.h" |
---|
| 26 | #include "vi.h" |
---|
| 27 | |
---|
| 28 | /* |
---|
| 29 | * There are two types of "words". Bigwords are easy -- groups of anything |
---|
| 30 | * delimited by whitespace. Normal words are trickier. They are either a |
---|
| 31 | * group of characters, numbers and underscores, or a group of anything but, |
---|
| 32 | * delimited by whitespace. When for a word, if you're in whitespace, it's |
---|
| 33 | * easy, just remove the whitespace and go to the beginning or end of the |
---|
| 34 | * word. Otherwise, figure out if the next character is in a different group. |
---|
| 35 | * If it is, go to the beginning or end of that group, otherwise, go to the |
---|
| 36 | * beginning or end of the current group. The historic version of vi didn't |
---|
| 37 | * get this right, so, for example, there were cases where "4e" was not the |
---|
| 38 | * same as "eeee" -- in particular, single character words, and commands that |
---|
| 39 | * began in whitespace were almost always handled incorrectly. To get it right |
---|
| 40 | * you have to resolve the cursor after each search so that the look-ahead to |
---|
| 41 | * figure out what type of "word" the cursor is in will be correct. |
---|
| 42 | * |
---|
| 43 | * Empty lines, and lines that consist of only white-space characters count |
---|
| 44 | * as a single word, and the beginning and end of the file counts as an |
---|
| 45 | * infinite number of words. |
---|
| 46 | * |
---|
| 47 | * Movements associated with commands are different than movement commands. |
---|
| 48 | * For example, in "abc def", with the cursor on the 'a', "cw" is from |
---|
| 49 | * 'a' to 'c', while "w" is from 'a' to 'd'. In general, trailing white |
---|
| 50 | * space is discarded from the change movement. Another example is that, |
---|
| 51 | * in the same string, a "cw" on any white space character replaces that |
---|
| 52 | * single character, and nothing else. Ain't nothin' in here that's easy. |
---|
| 53 | * |
---|
| 54 | * One historic note -- in the original vi, the 'w', 'W' and 'B' commands |
---|
| 55 | * would treat groups of empty lines as individual words, i.e. the command |
---|
| 56 | * would move the cursor to each new empty line. The 'e' and 'E' commands |
---|
| 57 | * would treat groups of empty lines as a single word, i.e. the first use |
---|
| 58 | * would move past the group of lines. The 'b' command would just beep at |
---|
| 59 | * you, or, if you did it from the start of the line as part of a motion |
---|
| 60 | * command, go absolutely nuts. If the lines contained only white-space |
---|
| 61 | * characters, the 'w' and 'W' commands would just beep at you, and the 'B', |
---|
| 62 | * 'b', 'E' and 'e' commands would treat the group as a single word, and |
---|
| 63 | * the 'B' and 'b' commands will treat the lines as individual words. This |
---|
| 64 | * implementation treats all of these cases as a single white-space word. |
---|
| 65 | */ |
---|
| 66 | |
---|
| 67 | enum which {BIGWORD, LITTLEWORD}; |
---|
| 68 | |
---|
| 69 | static int bword __P((SCR *, VICMD *, enum which)); |
---|
| 70 | static int eword __P((SCR *, VICMD *, enum which)); |
---|
| 71 | static int fword __P((SCR *, VICMD *, enum which)); |
---|
| 72 | |
---|
| 73 | /* |
---|
| 74 | * v_wordW -- [count]W |
---|
| 75 | * Move forward a bigword at a time. |
---|
| 76 | * |
---|
| 77 | * PUBLIC: int v_wordW __P((SCR *, VICMD *)); |
---|
| 78 | */ |
---|
| 79 | int |
---|
| 80 | v_wordW(sp, vp) |
---|
| 81 | SCR *sp; |
---|
| 82 | VICMD *vp; |
---|
| 83 | { |
---|
| 84 | return (fword(sp, vp, BIGWORD)); |
---|
| 85 | } |
---|
| 86 | |
---|
| 87 | /* |
---|
| 88 | * v_wordw -- [count]w |
---|
| 89 | * Move forward a word at a time. |
---|
| 90 | * |
---|
| 91 | * PUBLIC: int v_wordw __P((SCR *, VICMD *)); |
---|
| 92 | */ |
---|
| 93 | int |
---|
| 94 | v_wordw(sp, vp) |
---|
| 95 | SCR *sp; |
---|
| 96 | VICMD *vp; |
---|
| 97 | { |
---|
| 98 | return (fword(sp, vp, LITTLEWORD)); |
---|
| 99 | } |
---|
| 100 | |
---|
| 101 | /* |
---|
| 102 | * fword -- |
---|
| 103 | * Move forward by words. |
---|
| 104 | */ |
---|
| 105 | static int |
---|
| 106 | fword(sp, vp, type) |
---|
| 107 | SCR *sp; |
---|
| 108 | VICMD *vp; |
---|
| 109 | enum which type; |
---|
| 110 | { |
---|
| 111 | enum { INWORD, NOTWORD } state; |
---|
| 112 | VCS cs; |
---|
| 113 | u_long cnt; |
---|
| 114 | |
---|
| 115 | cnt = F_ISSET(vp, VC_C1SET) ? vp->count : 1; |
---|
| 116 | cs.cs_lno = vp->m_start.lno; |
---|
| 117 | cs.cs_cno = vp->m_start.cno; |
---|
| 118 | if (cs_init(sp, &cs)) |
---|
| 119 | return (1); |
---|
| 120 | |
---|
| 121 | /* |
---|
| 122 | * If in white-space: |
---|
| 123 | * If the count is 1, and it's a change command, we're done. |
---|
| 124 | * Else, move to the first non-white-space character, which |
---|
| 125 | * counts as a single word move. If it's a motion command, |
---|
| 126 | * don't move off the end of the line. |
---|
| 127 | */ |
---|
| 128 | if (cs.cs_flags == CS_EMP || cs.cs_flags == 0 && isblank(cs.cs_ch)) { |
---|
| 129 | if (ISMOTION(vp) && cs.cs_flags != CS_EMP && cnt == 1) { |
---|
| 130 | if (ISCMD(vp->rkp, 'c')) |
---|
| 131 | return (0); |
---|
| 132 | if (ISCMD(vp->rkp, 'd') || ISCMD(vp->rkp, 'y')) { |
---|
| 133 | if (cs_fspace(sp, &cs)) |
---|
| 134 | return (1); |
---|
| 135 | goto ret; |
---|
| 136 | } |
---|
| 137 | } |
---|
| 138 | if (cs_fblank(sp, &cs)) |
---|
| 139 | return (1); |
---|
| 140 | --cnt; |
---|
| 141 | } |
---|
| 142 | |
---|
| 143 | /* |
---|
| 144 | * Cyclically move to the next word -- this involves skipping |
---|
| 145 | * over word characters and then any trailing non-word characters. |
---|
| 146 | * Note, for the 'w' command, the definition of a word keeps |
---|
| 147 | * switching. |
---|
| 148 | */ |
---|
| 149 | if (type == BIGWORD) |
---|
| 150 | while (cnt--) { |
---|
| 151 | for (;;) { |
---|
| 152 | if (cs_next(sp, &cs)) |
---|
| 153 | return (1); |
---|
| 154 | if (cs.cs_flags == CS_EOF) |
---|
| 155 | goto ret; |
---|
| 156 | if (cs.cs_flags != 0 || isblank(cs.cs_ch)) |
---|
| 157 | break; |
---|
| 158 | } |
---|
| 159 | /* |
---|
| 160 | * If a motion command and we're at the end of the |
---|
| 161 | * last word, we're done. Delete and yank eat any |
---|
| 162 | * trailing blanks, but we don't move off the end |
---|
| 163 | * of the line regardless. |
---|
| 164 | */ |
---|
| 165 | if (cnt == 0 && ISMOTION(vp)) { |
---|
| 166 | if ((ISCMD(vp->rkp, 'd') || |
---|
| 167 | ISCMD(vp->rkp, 'y')) && |
---|
| 168 | cs_fspace(sp, &cs)) |
---|
| 169 | return (1); |
---|
| 170 | break; |
---|
| 171 | } |
---|
| 172 | |
---|
| 173 | /* Eat whitespace characters. */ |
---|
| 174 | if (cs_fblank(sp, &cs)) |
---|
| 175 | return (1); |
---|
| 176 | if (cs.cs_flags == CS_EOF) |
---|
| 177 | goto ret; |
---|
| 178 | } |
---|
| 179 | else |
---|
| 180 | while (cnt--) { |
---|
| 181 | state = cs.cs_flags == 0 && |
---|
| 182 | inword(cs.cs_ch) ? INWORD : NOTWORD; |
---|
| 183 | for (;;) { |
---|
| 184 | if (cs_next(sp, &cs)) |
---|
| 185 | return (1); |
---|
| 186 | if (cs.cs_flags == CS_EOF) |
---|
| 187 | goto ret; |
---|
| 188 | if (cs.cs_flags != 0 || isblank(cs.cs_ch)) |
---|
| 189 | break; |
---|
| 190 | if (state == INWORD) { |
---|
| 191 | if (!inword(cs.cs_ch)) |
---|
| 192 | break; |
---|
| 193 | } else |
---|
| 194 | if (inword(cs.cs_ch)) |
---|
| 195 | break; |
---|
| 196 | } |
---|
| 197 | /* See comment above. */ |
---|
| 198 | if (cnt == 0 && ISMOTION(vp)) { |
---|
| 199 | if ((ISCMD(vp->rkp, 'd') || |
---|
| 200 | ISCMD(vp->rkp, 'y')) && |
---|
| 201 | cs_fspace(sp, &cs)) |
---|
| 202 | return (1); |
---|
| 203 | break; |
---|
| 204 | } |
---|
| 205 | |
---|
| 206 | /* Eat whitespace characters. */ |
---|
| 207 | if (cs.cs_flags != 0 || isblank(cs.cs_ch)) |
---|
| 208 | if (cs_fblank(sp, &cs)) |
---|
| 209 | return (1); |
---|
| 210 | if (cs.cs_flags == CS_EOF) |
---|
| 211 | goto ret; |
---|
| 212 | } |
---|
| 213 | |
---|
| 214 | /* |
---|
| 215 | * If we didn't move, we must be at EOF. |
---|
| 216 | * |
---|
| 217 | * !!! |
---|
| 218 | * That's okay for motion commands, however. |
---|
| 219 | */ |
---|
| 220 | ret: if (!ISMOTION(vp) && |
---|
| 221 | cs.cs_lno == vp->m_start.lno && cs.cs_cno == vp->m_start.cno) { |
---|
| 222 | v_eof(sp, &vp->m_start); |
---|
| 223 | return (1); |
---|
| 224 | } |
---|
| 225 | |
---|
| 226 | /* Adjust the end of the range for motion commands. */ |
---|
| 227 | vp->m_stop.lno = cs.cs_lno; |
---|
| 228 | vp->m_stop.cno = cs.cs_cno; |
---|
| 229 | if (ISMOTION(vp) && cs.cs_flags == 0) |
---|
| 230 | --vp->m_stop.cno; |
---|
| 231 | |
---|
| 232 | /* |
---|
| 233 | * Non-motion commands move to the end of the range. Delete |
---|
| 234 | * and yank stay at the start, ignore others. |
---|
| 235 | */ |
---|
| 236 | vp->m_final = ISMOTION(vp) ? vp->m_start : vp->m_stop; |
---|
| 237 | return (0); |
---|
| 238 | } |
---|
| 239 | |
---|
| 240 | /* |
---|
| 241 | * v_wordE -- [count]E |
---|
| 242 | * Move forward to the end of the bigword. |
---|
| 243 | * |
---|
| 244 | * PUBLIC: int v_wordE __P((SCR *, VICMD *)); |
---|
| 245 | */ |
---|
| 246 | int |
---|
| 247 | v_wordE(sp, vp) |
---|
| 248 | SCR *sp; |
---|
| 249 | VICMD *vp; |
---|
| 250 | { |
---|
| 251 | return (eword(sp, vp, BIGWORD)); |
---|
| 252 | } |
---|
| 253 | |
---|
| 254 | /* |
---|
| 255 | * v_worde -- [count]e |
---|
| 256 | * Move forward to the end of the word. |
---|
| 257 | * |
---|
| 258 | * PUBLIC: int v_worde __P((SCR *, VICMD *)); |
---|
| 259 | */ |
---|
| 260 | int |
---|
| 261 | v_worde(sp, vp) |
---|
| 262 | SCR *sp; |
---|
| 263 | VICMD *vp; |
---|
| 264 | { |
---|
| 265 | return (eword(sp, vp, LITTLEWORD)); |
---|
| 266 | } |
---|
| 267 | |
---|
| 268 | /* |
---|
| 269 | * eword -- |
---|
| 270 | * Move forward to the end of the word. |
---|
| 271 | */ |
---|
| 272 | static int |
---|
| 273 | eword(sp, vp, type) |
---|
| 274 | SCR *sp; |
---|
| 275 | VICMD *vp; |
---|
| 276 | enum which type; |
---|
| 277 | { |
---|
| 278 | enum { INWORD, NOTWORD } state; |
---|
| 279 | VCS cs; |
---|
| 280 | u_long cnt; |
---|
| 281 | |
---|
| 282 | cnt = F_ISSET(vp, VC_C1SET) ? vp->count : 1; |
---|
| 283 | cs.cs_lno = vp->m_start.lno; |
---|
| 284 | cs.cs_cno = vp->m_start.cno; |
---|
| 285 | if (cs_init(sp, &cs)) |
---|
| 286 | return (1); |
---|
| 287 | |
---|
| 288 | /* |
---|
| 289 | * !!! |
---|
| 290 | * If in whitespace, or the next character is whitespace, move past |
---|
| 291 | * it. (This doesn't count as a word move.) Stay at the character |
---|
| 292 | * past the current one, it sets word "state" for the 'e' command. |
---|
| 293 | */ |
---|
| 294 | if (cs.cs_flags == 0 && !isblank(cs.cs_ch)) { |
---|
| 295 | if (cs_next(sp, &cs)) |
---|
| 296 | return (1); |
---|
| 297 | if (cs.cs_flags == 0 && !isblank(cs.cs_ch)) |
---|
| 298 | goto start; |
---|
| 299 | } |
---|
| 300 | if (cs_fblank(sp, &cs)) |
---|
| 301 | return (1); |
---|
| 302 | |
---|
| 303 | /* |
---|
| 304 | * Cyclically move to the next word -- this involves skipping |
---|
| 305 | * over word characters and then any trailing non-word characters. |
---|
| 306 | * Note, for the 'e' command, the definition of a word keeps |
---|
| 307 | * switching. |
---|
| 308 | */ |
---|
| 309 | start: if (type == BIGWORD) |
---|
| 310 | while (cnt--) { |
---|
| 311 | for (;;) { |
---|
| 312 | if (cs_next(sp, &cs)) |
---|
| 313 | return (1); |
---|
| 314 | if (cs.cs_flags == CS_EOF) |
---|
| 315 | goto ret; |
---|
| 316 | if (cs.cs_flags != 0 || isblank(cs.cs_ch)) |
---|
| 317 | break; |
---|
| 318 | } |
---|
| 319 | /* |
---|
| 320 | * When we reach the start of the word after the last |
---|
| 321 | * word, we're done. If we changed state, back up one |
---|
| 322 | * to the end of the previous word. |
---|
| 323 | */ |
---|
| 324 | if (cnt == 0) { |
---|
| 325 | if (cs.cs_flags == 0 && cs_prev(sp, &cs)) |
---|
| 326 | return (1); |
---|
| 327 | break; |
---|
| 328 | } |
---|
| 329 | |
---|
| 330 | /* Eat whitespace characters. */ |
---|
| 331 | if (cs_fblank(sp, &cs)) |
---|
| 332 | return (1); |
---|
| 333 | if (cs.cs_flags == CS_EOF) |
---|
| 334 | goto ret; |
---|
| 335 | } |
---|
| 336 | else |
---|
| 337 | while (cnt--) { |
---|
| 338 | state = cs.cs_flags == 0 && |
---|
| 339 | inword(cs.cs_ch) ? INWORD : NOTWORD; |
---|
| 340 | for (;;) { |
---|
| 341 | if (cs_next(sp, &cs)) |
---|
| 342 | return (1); |
---|
| 343 | if (cs.cs_flags == CS_EOF) |
---|
| 344 | goto ret; |
---|
| 345 | if (cs.cs_flags != 0 || isblank(cs.cs_ch)) |
---|
| 346 | break; |
---|
| 347 | if (state == INWORD) { |
---|
| 348 | if (!inword(cs.cs_ch)) |
---|
| 349 | break; |
---|
| 350 | } else |
---|
| 351 | if (inword(cs.cs_ch)) |
---|
| 352 | break; |
---|
| 353 | } |
---|
| 354 | /* See comment above. */ |
---|
| 355 | if (cnt == 0) { |
---|
| 356 | if (cs.cs_flags == 0 && cs_prev(sp, &cs)) |
---|
| 357 | return (1); |
---|
| 358 | break; |
---|
| 359 | } |
---|
| 360 | |
---|
| 361 | /* Eat whitespace characters. */ |
---|
| 362 | if (cs.cs_flags != 0 || isblank(cs.cs_ch)) |
---|
| 363 | if (cs_fblank(sp, &cs)) |
---|
| 364 | return (1); |
---|
| 365 | if (cs.cs_flags == CS_EOF) |
---|
| 366 | goto ret; |
---|
| 367 | } |
---|
| 368 | |
---|
| 369 | /* |
---|
| 370 | * If we didn't move, we must be at EOF. |
---|
| 371 | * |
---|
| 372 | * !!! |
---|
| 373 | * That's okay for motion commands, however. |
---|
| 374 | */ |
---|
| 375 | ret: if (!ISMOTION(vp) && |
---|
| 376 | cs.cs_lno == vp->m_start.lno && cs.cs_cno == vp->m_start.cno) { |
---|
| 377 | v_eof(sp, &vp->m_start); |
---|
| 378 | return (1); |
---|
| 379 | } |
---|
| 380 | |
---|
| 381 | /* Set the end of the range for motion commands. */ |
---|
| 382 | vp->m_stop.lno = cs.cs_lno; |
---|
| 383 | vp->m_stop.cno = cs.cs_cno; |
---|
| 384 | |
---|
| 385 | /* |
---|
| 386 | * Non-motion commands move to the end of the range. |
---|
| 387 | * Delete and yank stay at the start, ignore others. |
---|
| 388 | */ |
---|
| 389 | vp->m_final = ISMOTION(vp) ? vp->m_start : vp->m_stop; |
---|
| 390 | return (0); |
---|
| 391 | } |
---|
| 392 | |
---|
| 393 | /* |
---|
| 394 | * v_WordB -- [count]B |
---|
| 395 | * Move backward a bigword at a time. |
---|
| 396 | * |
---|
| 397 | * PUBLIC: int v_wordB __P((SCR *, VICMD *)); |
---|
| 398 | */ |
---|
| 399 | int |
---|
| 400 | v_wordB(sp, vp) |
---|
| 401 | SCR *sp; |
---|
| 402 | VICMD *vp; |
---|
| 403 | { |
---|
| 404 | return (bword(sp, vp, BIGWORD)); |
---|
| 405 | } |
---|
| 406 | |
---|
| 407 | /* |
---|
| 408 | * v_wordb -- [count]b |
---|
| 409 | * Move backward a word at a time. |
---|
| 410 | * |
---|
| 411 | * PUBLIC: int v_wordb __P((SCR *, VICMD *)); |
---|
| 412 | */ |
---|
| 413 | int |
---|
| 414 | v_wordb(sp, vp) |
---|
| 415 | SCR *sp; |
---|
| 416 | VICMD *vp; |
---|
| 417 | { |
---|
| 418 | return (bword(sp, vp, LITTLEWORD)); |
---|
| 419 | } |
---|
| 420 | |
---|
| 421 | /* |
---|
| 422 | * bword -- |
---|
| 423 | * Move backward by words. |
---|
| 424 | */ |
---|
| 425 | static int |
---|
| 426 | bword(sp, vp, type) |
---|
| 427 | SCR *sp; |
---|
| 428 | VICMD *vp; |
---|
| 429 | enum which type; |
---|
| 430 | { |
---|
| 431 | enum { INWORD, NOTWORD } state; |
---|
| 432 | VCS cs; |
---|
| 433 | u_long cnt; |
---|
| 434 | |
---|
| 435 | cnt = F_ISSET(vp, VC_C1SET) ? vp->count : 1; |
---|
| 436 | cs.cs_lno = vp->m_start.lno; |
---|
| 437 | cs.cs_cno = vp->m_start.cno; |
---|
| 438 | if (cs_init(sp, &cs)) |
---|
| 439 | return (1); |
---|
| 440 | |
---|
| 441 | /* |
---|
| 442 | * !!! |
---|
| 443 | * If in whitespace, or the previous character is whitespace, move |
---|
| 444 | * past it. (This doesn't count as a word move.) Stay at the |
---|
| 445 | * character before the current one, it sets word "state" for the |
---|
| 446 | * 'b' command. |
---|
| 447 | */ |
---|
| 448 | if (cs.cs_flags == 0 && !isblank(cs.cs_ch)) { |
---|
| 449 | if (cs_prev(sp, &cs)) |
---|
| 450 | return (1); |
---|
| 451 | if (cs.cs_flags == 0 && !isblank(cs.cs_ch)) |
---|
| 452 | goto start; |
---|
| 453 | } |
---|
| 454 | if (cs_bblank(sp, &cs)) |
---|
| 455 | return (1); |
---|
| 456 | |
---|
| 457 | /* |
---|
| 458 | * Cyclically move to the beginning of the previous word -- this |
---|
| 459 | * involves skipping over word characters and then any trailing |
---|
| 460 | * non-word characters. Note, for the 'b' command, the definition |
---|
| 461 | * of a word keeps switching. |
---|
| 462 | */ |
---|
| 463 | start: if (type == BIGWORD) |
---|
| 464 | while (cnt--) { |
---|
| 465 | for (;;) { |
---|
| 466 | if (cs_prev(sp, &cs)) |
---|
| 467 | return (1); |
---|
| 468 | if (cs.cs_flags == CS_SOF) |
---|
| 469 | goto ret; |
---|
| 470 | if (cs.cs_flags != 0 || isblank(cs.cs_ch)) |
---|
| 471 | break; |
---|
| 472 | } |
---|
| 473 | /* |
---|
| 474 | * When we reach the end of the word before the last |
---|
| 475 | * word, we're done. If we changed state, move forward |
---|
| 476 | * one to the end of the next word. |
---|
| 477 | */ |
---|
| 478 | if (cnt == 0) { |
---|
| 479 | if (cs.cs_flags == 0 && cs_next(sp, &cs)) |
---|
| 480 | return (1); |
---|
| 481 | break; |
---|
| 482 | } |
---|
| 483 | |
---|
| 484 | /* Eat whitespace characters. */ |
---|
| 485 | if (cs_bblank(sp, &cs)) |
---|
| 486 | return (1); |
---|
| 487 | if (cs.cs_flags == CS_SOF) |
---|
| 488 | goto ret; |
---|
| 489 | } |
---|
| 490 | else |
---|
| 491 | while (cnt--) { |
---|
| 492 | state = cs.cs_flags == 0 && |
---|
| 493 | inword(cs.cs_ch) ? INWORD : NOTWORD; |
---|
| 494 | for (;;) { |
---|
| 495 | if (cs_prev(sp, &cs)) |
---|
| 496 | return (1); |
---|
| 497 | if (cs.cs_flags == CS_SOF) |
---|
| 498 | goto ret; |
---|
| 499 | if (cs.cs_flags != 0 || isblank(cs.cs_ch)) |
---|
| 500 | break; |
---|
| 501 | if (state == INWORD) { |
---|
| 502 | if (!inword(cs.cs_ch)) |
---|
| 503 | break; |
---|
| 504 | } else |
---|
| 505 | if (inword(cs.cs_ch)) |
---|
| 506 | break; |
---|
| 507 | } |
---|
| 508 | /* See comment above. */ |
---|
| 509 | if (cnt == 0) { |
---|
| 510 | if (cs.cs_flags == 0 && cs_next(sp, &cs)) |
---|
| 511 | return (1); |
---|
| 512 | break; |
---|
| 513 | } |
---|
| 514 | |
---|
| 515 | /* Eat whitespace characters. */ |
---|
| 516 | if (cs.cs_flags != 0 || isblank(cs.cs_ch)) |
---|
| 517 | if (cs_bblank(sp, &cs)) |
---|
| 518 | return (1); |
---|
| 519 | if (cs.cs_flags == CS_SOF) |
---|
| 520 | goto ret; |
---|
| 521 | } |
---|
| 522 | |
---|
| 523 | /* If we didn't move, we must be at SOF. */ |
---|
| 524 | ret: if (cs.cs_lno == vp->m_start.lno && cs.cs_cno == vp->m_start.cno) { |
---|
| 525 | v_sof(sp, &vp->m_start); |
---|
| 526 | return (1); |
---|
| 527 | } |
---|
| 528 | |
---|
| 529 | /* Set the end of the range for motion commands. */ |
---|
| 530 | vp->m_stop.lno = cs.cs_lno; |
---|
| 531 | vp->m_stop.cno = cs.cs_cno; |
---|
| 532 | |
---|
| 533 | /* |
---|
| 534 | * All commands move to the end of the range. Motion commands |
---|
| 535 | * adjust the starting point to the character before the current |
---|
| 536 | * one. |
---|
| 537 | * |
---|
| 538 | * !!! |
---|
| 539 | * The historic vi didn't get this right -- the `yb' command yanked |
---|
| 540 | * the right stuff and even updated the cursor value, but the cursor |
---|
| 541 | * was not actually updated on the screen. |
---|
| 542 | */ |
---|
| 543 | vp->m_final = vp->m_stop; |
---|
| 544 | if (ISMOTION(vp)) |
---|
| 545 | --vp->m_start.cno; |
---|
| 546 | return (0); |
---|
| 547 | } |
---|