First batch after 2.20.1
[git/git.git] / builtin / grep.c
CommitLineData
5010cb5f
JH
1/*
2 * Builtin "git grep"
3 *
4 * Copyright (c) 2006 Junio C Hamano
5 */
6#include "cache.h"
627d9342 7#include "repository.h"
b2141fc1 8#include "config.h"
5010cb5f
JH
9#include "blob.h"
10#include "tree.h"
11#include "commit.h"
12#include "tag.h"
1362671f 13#include "tree-walk.h"
5010cb5f 14#include "builtin.h"
3e230fa1 15#include "parse-options.h"
678e484b
JS
16#include "string-list.h"
17#include "run-command.h"
60ecac98 18#include "userdiff.h"
83b5d2f5 19#include "grep.h"
493b7a08 20#include "quote.h"
59332d13 21#include "dir.h"
64acde94 22#include "pathspec.h"
0281e487 23#include "submodule.h"
74ed4371 24#include "submodule-config.h"
90c62155 25#include "object-store.h"
5b594f45 26
3e230fa1 27static char const * const grep_usage[] = {
9c9b4f2f 28 N_("git grep [<options>] [-e] <pattern> [<rev>...] [[--] <path>...]"),
3e230fa1
RS
29 NULL
30};
31
0281e487 32static int recurse_submodules;
0281e487 33
89f09dd3
VL
34#define GREP_NUM_THREADS_DEFAULT 8
35static int num_threads;
5b594f45 36
89f09dd3 37static pthread_t *threads;
5b594f45 38
5b594f45
FK
39/* We use one producer thread and THREADS consumer
40 * threads. The producer adds struct work_items to 'todo' and the
41 * consumers pick work items from the same array.
42 */
9cba13ca 43struct work_item {
8f24a632 44 struct grep_source source;
5b594f45
FK
45 char done;
46 struct strbuf out;
47};
48
49/* In the range [todo_done, todo_start) in 'todo' we have work_items
50 * that have been or are processed by a consumer thread. We haven't
51 * written the result for these to stdout yet.
52 *
53 * The work_items in [todo_start, todo_end) are waiting to be picked
54 * up by a consumer thread.
55 *
56 * The ranges are modulo TODO_SIZE.
57 */
58#define TODO_SIZE 128
59static struct work_item todo[TODO_SIZE];
60static int todo_start;
61static int todo_end;
62static int todo_done;
63
64/* Has all work items been added? */
65static int all_work_added;
66
67/* This lock protects all the variables above. */
68static pthread_mutex_t grep_mutex;
69
1487a12b
JH
70static inline void grep_lock(void)
71{
8df4c295 72 pthread_mutex_lock(&grep_mutex);
1487a12b
JH
73}
74
75static inline void grep_unlock(void)
76{
8df4c295 77 pthread_mutex_unlock(&grep_mutex);
1487a12b
JH
78}
79
5b594f45
FK
80/* Signalled when a new work_item is added to todo. */
81static pthread_cond_t cond_add;
82
83/* Signalled when the result from one work_item is written to
84 * stdout.
85 */
86static pthread_cond_t cond_write;
87
88/* Signalled when we are finished with everything. */
89static pthread_cond_t cond_result;
90
08303c36 91static int skip_first_line;
431d6e7b 92
e2e05d61 93static void add_work(struct grep_opt *opt, const struct grep_source *gs)
5b594f45
FK
94{
95 grep_lock();
96
97 while ((todo_end+1) % ARRAY_SIZE(todo) == todo_done) {
98 pthread_cond_wait(&cond_write, &grep_mutex);
99 }
100
e2e05d61 101 todo[todo_end].source = *gs;
9dd5245c 102 if (opt->binary != GREP_BINARY_TEXT)
acd00ea0
NTND
103 grep_source_load_driver(&todo[todo_end].source,
104 opt->repo->index);
5b594f45
FK
105 todo[todo_end].done = 0;
106 strbuf_reset(&todo[todo_end].out);
107 todo_end = (todo_end + 1) % ARRAY_SIZE(todo);
108
109 pthread_cond_signal(&cond_add);
110 grep_unlock();
111}
112
113static struct work_item *get_work(void)
114{
115 struct work_item *ret;
116
117 grep_lock();
118 while (todo_start == todo_end && !all_work_added) {
119 pthread_cond_wait(&cond_add, &grep_mutex);
120 }
121
122 if (todo_start == todo_end && all_work_added) {
123 ret = NULL;
124 } else {
125 ret = &todo[todo_start];
126 todo_start = (todo_start + 1) % ARRAY_SIZE(todo);
127 }
128 grep_unlock();
129 return ret;
130}
131
5b594f45
FK
132static void work_done(struct work_item *w)
133{
134 int old_done;
135
136 grep_lock();
137 w->done = 1;
138 old_done = todo_done;
139 for(; todo[todo_done].done && todo_done != todo_start;
140 todo_done = (todo_done+1) % ARRAY_SIZE(todo)) {
141 w = &todo[todo_done];
431d6e7b 142 if (w->out.len) {
08303c36
RS
143 const char *p = w->out.buf;
144 size_t len = w->out.len;
145
146 /* Skip the leading hunk mark of the first file. */
147 if (skip_first_line) {
148 while (len) {
149 len--;
150 if (*p++ == '\n')
151 break;
152 }
153 skip_first_line = 0;
154 }
155
156 write_or_die(1, p, len);
431d6e7b 157 }
8f24a632 158 grep_source_clear(&w->source);
5b594f45
FK
159 }
160
161 if (old_done != todo_done)
162 pthread_cond_signal(&cond_write);
163
164 if (all_work_added && todo_done == todo_end)
165 pthread_cond_signal(&cond_result);
166
167 grep_unlock();
168}
169
170static void *run(void *arg)
171{
172 int hit = 0;
173 struct grep_opt *opt = arg;
174
175 while (1) {
176 struct work_item *w = get_work();
177 if (!w)
178 break;
179
180 opt->output_priv = w;
f9ee2fcd 181 hit |= grep_source(opt, &w->source);
8f24a632 182 grep_source_clear_data(&w->source);
5b594f45
FK
183 work_done(w);
184 }
bfac23d9
DM
185 free_grep_patterns(arg);
186 free(arg);
5b594f45
FK
187
188 return (void*) (intptr_t) hit;
189}
190
191static void strbuf_out(struct grep_opt *opt, const void *buf, size_t size)
192{
193 struct work_item *w = opt->output_priv;
194 strbuf_add(&w->out, buf, size);
195}
196
197static void start_threads(struct grep_opt *opt)
198{
199 int i;
200
201 pthread_mutex_init(&grep_mutex, NULL);
b3aeb285 202 pthread_mutex_init(&grep_read_mutex, NULL);
0579f91d 203 pthread_mutex_init(&grep_attr_mutex, NULL);
5b594f45
FK
204 pthread_cond_init(&cond_add, NULL);
205 pthread_cond_init(&cond_write, NULL);
206 pthread_cond_init(&cond_result, NULL);
78db6ea9 207 grep_use_locks = 1;
5b594f45
FK
208
209 for (i = 0; i < ARRAY_SIZE(todo); i++) {
210 strbuf_init(&todo[i].out, 0);
211 }
212
89f09dd3
VL
213 threads = xcalloc(num_threads, sizeof(*threads));
214 for (i = 0; i < num_threads; i++) {
5b594f45
FK
215 int err;
216 struct grep_opt *o = grep_opt_dup(opt);
217 o->output = strbuf_out;
6d423dd5
ÆAB
218 if (i)
219 o->debug = 0;
5b594f45
FK
220 compile_grep_patterns(o);
221 err = pthread_create(&threads[i], NULL, run, o);
222
223 if (err)
2fc5f9f1 224 die(_("grep: failed to create thread: %s"),
5b594f45
FK
225 strerror(err));
226 }
227}
228
229static int wait_all(void)
230{
231 int hit = 0;
232 int i;
233
4002e87c 234 if (!HAVE_THREADS)
fd6263fb 235 BUG("Never call this function unless you have started threads");
4002e87c 236
5b594f45
FK
237 grep_lock();
238 all_work_added = 1;
239
240 /* Wait until all work is done. */
241 while (todo_done != todo_end)
242 pthread_cond_wait(&cond_result, &grep_mutex);
243
244 /* Wake up all the consumer threads so they can see that there
245 * is no more work to do.
246 */
247 pthread_cond_broadcast(&cond_add);
248 grep_unlock();
249
89f09dd3 250 for (i = 0; i < num_threads; i++) {
5b594f45
FK
251 void *h;
252 pthread_join(threads[i], &h);
253 hit |= (int) (intptr_t) h;
254 }
255
89f09dd3
VL
256 free(threads);
257
5b594f45 258 pthread_mutex_destroy(&grep_mutex);
b3aeb285 259 pthread_mutex_destroy(&grep_read_mutex);
0579f91d 260 pthread_mutex_destroy(&grep_attr_mutex);
5b594f45
FK
261 pthread_cond_destroy(&cond_add);
262 pthread_cond_destroy(&cond_write);
263 pthread_cond_destroy(&cond_result);
78db6ea9 264 grep_use_locks = 0;
5b594f45
FK
265
266 return hit;
267}
5b594f45 268
15fabd1b
JH
269static int grep_cmd_config(const char *var, const char *value, void *cb)
270{
271 int st = grep_config(var, value, cb);
33c643bb 272 if (git_color_default_config(var, value, cb) < 0)
15fabd1b 273 st = -1;
89f09dd3
VL
274
275 if (!strcmp(var, "grep.threads")) {
276 num_threads = git_config_int(var, value);
277 if (num_threads < 0)
278 die(_("invalid number of threads specified (%d) for %s"),
279 num_threads, var);
fd6263fb 280 else if (!HAVE_THREADS && num_threads > 1) {
d1edee4a
ÆAB
281 /*
282 * TRANSLATORS: %s is the configuration
283 * variable for tweaking threads, currently
284 * grep.threads
285 */
286 warning(_("no threads support, ignoring %s"), var);
fd6263fb 287 num_threads = 1;
d1edee4a 288 }
89f09dd3
VL
289 }
290
9071c078
SB
291 if (!strcmp(var, "submodule.recurse"))
292 recurse_submodules = git_config_bool(var, value);
293
15fabd1b
JH
294 return st;
295}
296
1db11086 297static void *lock_and_read_oid_file(const struct object_id *oid, enum object_type *type, unsigned long *size)
5f02d315
JH
298{
299 void *data;
300
b3aeb285 301 grep_read_lock();
b4f5aca4 302 data = read_object_file(oid, type, size);
b3aeb285 303 grep_read_unlock();
5b594f45
FK
304 return data;
305}
306
1db11086 307static int grep_oid(struct grep_opt *opt, const struct object_id *oid,
55c61688
NTND
308 const char *filename, int tree_name_len,
309 const char *path)
5b594f45
FK
310{
311 struct strbuf pathbuf = STRBUF_INIT;
e2e05d61 312 struct grep_source gs;
5b594f45 313
f9ee2fcd
BW
314 if (opt->relative && opt->prefix_length) {
315 quote_path_relative(filename + tree_name_len, opt->prefix, &pathbuf);
316 strbuf_insert(&pathbuf, 0, filename, tree_name_len);
5b594f45
FK
317 } else {
318 strbuf_addstr(&pathbuf, filename);
319 }
320
e2e05d61 321 grep_source_init(&gs, GREP_SOURCE_OID, pathbuf.buf, path, oid);
38ef24dc 322 strbuf_release(&pathbuf);
e2e05d61 323
fd6263fb 324 if (num_threads > 1) {
e2e05d61
RV
325 /*
326 * add_work() copies gs and thus assumes ownership of
327 * its fields, so do not call grep_source_clear()
328 */
329 add_work(opt, &gs);
5b594f45 330 return 0;
4002e87c 331 } else {
5b594f45 332 int hit;
5010cb5f 333
8f24a632 334 hit = grep_source(opt, &gs);
dc49cd76 335
8f24a632
JK
336 grep_source_clear(&gs);
337 return hit;
5010cb5f 338 }
5b594f45
FK
339}
340
341static int grep_file(struct grep_opt *opt, const char *filename)
342{
343 struct strbuf buf = STRBUF_INIT;
e2e05d61 344 struct grep_source gs;
5b594f45 345
f9ee2fcd
BW
346 if (opt->relative && opt->prefix_length)
347 quote_path_relative(filename, opt->prefix, &buf);
348 else
349 strbuf_addstr(&buf, filename);
5b594f45 350
e2e05d61 351 grep_source_init(&gs, GREP_SOURCE_FILE, buf.buf, filename, filename);
38ef24dc 352 strbuf_release(&buf);
e2e05d61 353
fd6263fb 354 if (num_threads > 1) {
e2e05d61
RV
355 /*
356 * add_work() copies gs and thus assumes ownership of
357 * its fields, so do not call grep_source_clear()
358 */
359 add_work(opt, &gs);
5b594f45 360 return 0;
4002e87c 361 } else {
5b594f45 362 int hit;
5b594f45 363
8f24a632
JK
364 hit = grep_source(opt, &gs);
365
366 grep_source_clear(&gs);
5b594f45
FK
367 return hit;
368 }
5010cb5f
JH
369}
370
678e484b
JS
371static void append_path(struct grep_opt *opt, const void *data, size_t len)
372{
373 struct string_list *path_list = opt->output_priv;
374
375 if (len == 1 && *(const char *)data == '\0')
376 return;
0c72cead 377 string_list_append(path_list, xstrndup(data, len));
678e484b
JS
378}
379
380static void run_pager(struct grep_opt *opt, const char *prefix)
381{
382 struct string_list *path_list = opt->output_priv;
850d2fec 383 struct child_process child = CHILD_PROCESS_INIT;
678e484b
JS
384 int i, status;
385
386 for (i = 0; i < path_list->nr; i++)
850d2fec
JK
387 argv_array_push(&child.args, path_list->items[i].string);
388 child.dir = prefix;
389 child.use_shell = 1;
678e484b 390
850d2fec 391 status = run_command(&child);
678e484b
JS
392 if (status)
393 exit(status);
678e484b
JS
394}
395
f9ee2fcd
BW
396static int grep_cache(struct grep_opt *opt, struct repository *repo,
397 const struct pathspec *pathspec, int cached);
398static int grep_tree(struct grep_opt *opt, const struct pathspec *pathspec,
399 struct tree_desc *tree, struct strbuf *base, int tn_len,
400 int check_attr, struct repository *repo);
0281e487 401
f9ee2fcd
BW
402static int grep_submodule(struct grep_opt *opt, struct repository *superproject,
403 const struct pathspec *pathspec,
404 const struct object_id *oid,
405 const char *filename, const char *path)
0281e487 406{
f9ee2fcd
BW
407 struct repository submodule;
408 int hit;
74ed4371 409
76e9bdc4
AO
410 /*
411 * NEEDSWORK: submodules functions need to be protected because they
412 * access the object store via config_from_gitmodules(): the latter
413 * uses get_oid() which, for now, relies on the global the_repository
414 * object.
415 */
416 grep_read_lock();
417
418 if (!is_submodule_active(superproject, path)) {
419 grep_read_unlock();
f9ee2fcd 420 return 0;
76e9bdc4 421 }
0281e487 422
76e9bdc4
AO
423 if (repo_submodule_init(&submodule, superproject, path)) {
424 grep_read_unlock();
f9ee2fcd 425 return 0;
76e9bdc4 426 }
be80a239 427
f9ee2fcd 428 repo_read_gitmodules(&submodule);
0281e487 429
74ed4371 430 /*
f9ee2fcd
BW
431 * NEEDSWORK: This adds the submodule's object directory to the list of
432 * alternates for the single in-memory object store. This has some bad
433 * consequences for memory (processed objects will never be freed) and
434 * performance (this increases the number of pack files git has to pay
435 * attention to, to the sum of the number of pack files in all the
436 * repositories processed so far). This can be removed once the object
437 * store is no longer global and instead is a member of the repository
438 * object.
74ed4371 439 */
f0eaf638 440 add_to_alternates_memory(submodule.objects->odb->path);
9560e624 441 grep_read_unlock();
74ed4371 442
f9ee2fcd
BW
443 if (oid) {
444 struct object *object;
445 struct tree_desc tree;
446 void *data;
447 unsigned long size;
448 struct strbuf base = STRBUF_INIT;
74ed4371 449
f9ee2fcd 450 object = parse_object_or_die(oid, oid_to_hex(oid));
0281e487 451
f9ee2fcd 452 grep_read_lock();
02f0547e 453 data = read_object_with_reference(&object->oid, tree_type,
f9ee2fcd
BW
454 &size, NULL);
455 grep_read_unlock();
0281e487 456
f9ee2fcd
BW
457 if (!data)
458 die(_("unable to read tree (%s)"), oid_to_hex(&object->oid));
0281e487 459
f9ee2fcd
BW
460 strbuf_addstr(&base, filename);
461 strbuf_addch(&base, '/');
0281e487 462
f9ee2fcd
BW
463 init_tree_desc(&tree, data, size);
464 hit = grep_tree(opt, pathspec, &tree, &base, base.len,
465 object->type == OBJ_COMMIT, &submodule);
466 strbuf_release(&base);
467 free(data);
468 } else {
469 hit = grep_cache(opt, &submodule, pathspec, 1);
e6fac7f3 470 }
0281e487 471
f9ee2fcd
BW
472 repo_clear(&submodule);
473 return hit;
0281e487
BW
474}
475
f9ee2fcd
BW
476static int grep_cache(struct grep_opt *opt, struct repository *repo,
477 const struct pathspec *pathspec, int cached)
5010cb5f
JH
478{
479 int hit = 0;
480 int nr;
0281e487
BW
481 struct strbuf name = STRBUF_INIT;
482 int name_base_len = 0;
f9ee2fcd
BW
483 if (repo->submodule_prefix) {
484 name_base_len = strlen(repo->submodule_prefix);
485 strbuf_addstr(&name, repo->submodule_prefix);
0281e487
BW
486 }
487
b2aa84c7 488 if (repo_read_index(repo) < 0)
5507067d 489 die(_("index file corrupt"));
5010cb5f 490
f9ee2fcd
BW
491 for (nr = 0; nr < repo->index->cache_nr; nr++) {
492 const struct cache_entry *ce = repo->index->cache[nr];
0281e487
BW
493 strbuf_setlen(&name, name_base_len);
494 strbuf_addstr(&name, ce->name);
495
496 if (S_ISREG(ce->ce_mode) &&
a4009b0b 497 match_pathspec(repo->index, pathspec, name.buf, name.len, 0, NULL,
0281e487
BW
498 S_ISDIR(ce->ce_mode) ||
499 S_ISGITLINK(ce->ce_mode))) {
500 /*
501 * If CE_VALID is on, we assume worktree file and its
502 * cache entry are identical, even if worktree file has
503 * been modified, so use cache version instead
504 */
505 if (cached || (ce->ce_flags & CE_VALID) ||
506 ce_skip_worktree(ce)) {
507 if (ce_stage(ce) || ce_intent_to_add(ce))
508 continue;
f9ee2fcd
BW
509 hit |= grep_oid(opt, &ce->oid, name.buf,
510 0, name.buf);
0281e487 511 } else {
f9ee2fcd 512 hit |= grep_file(opt, name.buf);
0281e487
BW
513 }
514 } else if (recurse_submodules && S_ISGITLINK(ce->ce_mode) &&
a4009b0b 515 submodule_path_match(repo->index, pathspec, name.buf, NULL)) {
f9ee2fcd 516 hit |= grep_submodule(opt, repo, pathspec, NULL, ce->name, ce->name);
0281e487 517 } else {
5010cb5f 518 continue;
36f2587f 519 }
0281e487 520
36f2587f
JH
521 if (ce_stage(ce)) {
522 do {
523 nr++;
f9ee2fcd
BW
524 } while (nr < repo->index->cache_nr &&
525 !strcmp(ce->name, repo->index->cache[nr]->name));
36f2587f
JH
526 nr--; /* compensate for loop control */
527 }
c8610a2e
JH
528 if (hit && opt->status_only)
529 break;
5010cb5f 530 }
0281e487
BW
531
532 strbuf_release(&name);
5010cb5f
JH
533 return hit;
534}
535
f34bbc15 536static int grep_tree(struct grep_opt *opt, const struct pathspec *pathspec,
55c61688 537 struct tree_desc *tree, struct strbuf *base, int tn_len,
f9ee2fcd 538 int check_attr, struct repository *repo)
5010cb5f 539{
d688cf07
NTND
540 int hit = 0;
541 enum interesting match = entry_not_interesting;
4c068a98 542 struct name_entry entry;
e5e062b6 543 int old_baselen = base->len;
74ed4371
BW
544 struct strbuf name = STRBUF_INIT;
545 int name_base_len = 0;
f9ee2fcd
BW
546 if (repo->submodule_prefix) {
547 strbuf_addstr(&name, repo->submodule_prefix);
74ed4371
BW
548 name_base_len = name.len;
549 }
5010cb5f 550
4c068a98 551 while (tree_entry(tree, &entry)) {
0de16337 552 int te_len = tree_entry_len(&entry);
e5e062b6 553
d688cf07 554 if (match != all_entries_interesting) {
74ed4371
BW
555 strbuf_addstr(&name, base->buf + tn_len);
556 match = tree_entry_interesting(&entry, &name,
557 0, pathspec);
558 strbuf_setlen(&name, name_base_len);
559
d688cf07 560 if (match == all_entries_not_interesting)
97d0b74a 561 break;
d688cf07 562 if (match == entry_not_interesting)
1376e507
NTND
563 continue;
564 }
5010cb5f 565
1376e507 566 strbuf_add(base, entry.path, te_len);
e0eb889f 567
1376e507 568 if (S_ISREG(entry.mode)) {
1db11086 569 hit |= grep_oid(opt, entry.oid, base->buf, tn_len,
55c61688 570 check_attr ? base->buf + tn_len : NULL);
74ed4371 571 } else if (S_ISDIR(entry.mode)) {
21666f1a 572 enum object_type type;
5010cb5f
JH
573 struct tree_desc sub;
574 void *data;
6fda5e51
LT
575 unsigned long size;
576
1db11086 577 data = lock_and_read_oid_file(entry.oid, &type, &size);
5010cb5f 578 if (!data)
2fc5f9f1 579 die(_("unable to read tree (%s)"),
7d924c91 580 oid_to_hex(entry.oid));
1376e507
NTND
581
582 strbuf_addch(base, '/');
6fda5e51 583 init_tree_desc(&sub, data, size);
55c61688 584 hit |= grep_tree(opt, pathspec, &sub, base, tn_len,
f9ee2fcd 585 check_attr, repo);
5010cb5f 586 free(data);
74ed4371 587 } else if (recurse_submodules && S_ISGITLINK(entry.mode)) {
f9ee2fcd
BW
588 hit |= grep_submodule(opt, repo, pathspec, entry.oid,
589 base->buf, base->buf + tn_len);
5010cb5f 590 }
74ed4371 591
e5e062b6
NTND
592 strbuf_setlen(base, old_baselen);
593
c8610a2e
JH
594 if (hit && opt->status_only)
595 break;
5010cb5f 596 }
74ed4371
BW
597
598 strbuf_release(&name);
5010cb5f
JH
599 return hit;
600}
601
f34bbc15 602static int grep_object(struct grep_opt *opt, const struct pathspec *pathspec,
6856077a 603 struct object *obj, const char *name, const char *path)
5010cb5f 604{
1974632c 605 if (obj->type == OBJ_BLOB)
1db11086 606 return grep_oid(opt, &obj->oid, name, 0, path);
1974632c 607 if (obj->type == OBJ_COMMIT || obj->type == OBJ_TREE) {
5010cb5f
JH
608 struct tree_desc tree;
609 void *data;
6fda5e51 610 unsigned long size;
e5e062b6
NTND
611 struct strbuf base;
612 int hit, len;
613
b3aeb285 614 grep_read_lock();
02f0547e 615 data = read_object_with_reference(&obj->oid, tree_type,
6fda5e51 616 &size, NULL);
b3aeb285 617 grep_read_unlock();
8cb5775b 618
5010cb5f 619 if (!data)
f2fd0760 620 die(_("unable to read tree (%s)"), oid_to_hex(&obj->oid));
e5e062b6
NTND
621
622 len = name ? strlen(name) : 0;
623 strbuf_init(&base, PATH_MAX + len + 1);
624 if (len) {
625 strbuf_add(&base, name, len);
626 strbuf_addch(&base, ':');
627 }
6fda5e51 628 init_tree_desc(&tree, data, size);
55c61688 629 hit = grep_tree(opt, pathspec, &tree, &base, base.len,
6856077a 630 obj->type == OBJ_COMMIT, the_repository);
e5e062b6 631 strbuf_release(&base);
5010cb5f
JH
632 free(data);
633 return hit;
634 }
debca9d2 635 die(_("unable to grep from object of type %s"), type_name(obj->type));
5010cb5f
JH
636}
637
f34bbc15 638static int grep_objects(struct grep_opt *opt, const struct pathspec *pathspec,
30d00c39
JN
639 const struct object_array *list)
640{
641 unsigned int i;
642 int hit = 0;
643 const unsigned int nr = list->nr;
644
645 for (i = 0; i < nr; i++) {
646 struct object *real_obj;
a74093da
SB
647 real_obj = deref_tag(the_repository, list->objects[i].item,
648 NULL, 0);
74ed4371
BW
649
650 /* load the gitmodules file for this rev */
651 if (recurse_submodules) {
f793b895 652 submodule_free(the_repository);
cd73de47 653 gitmodules_config_oid(&real_obj->oid);
74ed4371 654 }
6856077a
JT
655 if (grep_object(opt, pathspec, real_obj, list->objects[i].name,
656 list->objects[i].path)) {
30d00c39
JN
657 hit = 1;
658 if (opt->status_only)
659 break;
660 }
661 }
662 return hit;
663}
664
dbfae86a 665static int grep_directory(struct grep_opt *opt, const struct pathspec *pathspec,
85975c0c 666 int exc_std, int use_index)
59332d13
JH
667{
668 struct dir_struct dir;
669 int i, hit = 0;
670
671 memset(&dir, 0, sizeof(dir));
85975c0c
JK
672 if (!use_index)
673 dir.flags |= DIR_NO_GITLINKS;
0a93fb8a
JH
674 if (exc_std)
675 setup_standard_excludes(&dir);
59332d13 676
0d32c183 677 fill_directory(&dir, &the_index, pathspec);
59332d13 678 for (i = 0; i < dir.nr; i++) {
6d2df284 679 if (!dir_path_match(&the_index, dir.entries[i], pathspec, 0, NULL))
9d8b831b 680 continue;
59332d13
JH
681 hit |= grep_file(opt, dir.entries[i]->name);
682 if (hit && opt->status_only)
683 break;
684 }
59332d13
JH
685 return hit;
686}
687
ff3c7f9a
RS
688static int context_callback(const struct option *opt, const char *arg,
689 int unset)
3e230fa1
RS
690{
691 struct grep_opt *grep_opt = opt->value;
692 int value;
693 const char *endp;
694
695 if (unset) {
696 grep_opt->pre_context = grep_opt->post_context = 0;
697 return 0;
698 }
699 value = strtol(arg, (char **)&endp, 10);
700 if (*endp) {
2fc5f9f1 701 return error(_("switch `%c' expects a numerical value"),
3e230fa1
RS
702 opt->short_name);
703 }
704 grep_opt->pre_context = grep_opt->post_context = value;
705 return 0;
706}
707
ff3c7f9a 708static int file_callback(const struct option *opt, const char *arg, int unset)
3e230fa1
RS
709{
710 struct grep_opt *grep_opt = opt->value;
517fe807 711 int from_stdin;
3e230fa1
RS
712 FILE *patterns;
713 int lno = 0;
cfe370c6 714 struct strbuf sb = STRBUF_INIT;
3e230fa1 715
517fe807
JK
716 BUG_ON_OPT_NEG(unset);
717
718 from_stdin = !strcmp(arg, "-");
c41dd2fd 719 patterns = from_stdin ? stdin : fopen(arg, "r");
3e230fa1 720 if (!patterns)
2fc5f9f1 721 die_errno(_("cannot open '%s'"), arg);
a5518431 722 while (strbuf_getline(&sb, patterns) == 0) {
3e230fa1
RS
723 /* ignore empty line like grep does */
724 if (sb.len == 0)
725 continue;
ed40a095 726
ec830611
RS
727 append_grep_pat(grep_opt, sb.buf, sb.len, arg, ++lno,
728 GREP_PATTERN);
3e230fa1 729 }
c41dd2fd
RS
730 if (!from_stdin)
731 fclose(patterns);
3e230fa1
RS
732 strbuf_release(&sb);
733 return 0;
734}
735
ff3c7f9a 736static int not_callback(const struct option *opt, const char *arg, int unset)
3e230fa1
RS
737{
738 struct grep_opt *grep_opt = opt->value;
517fe807
JK
739 BUG_ON_OPT_NEG(unset);
740 BUG_ON_OPT_ARG(arg);
3e230fa1
RS
741 append_grep_pattern(grep_opt, "--not", "command line", 0, GREP_NOT);
742 return 0;
743}
744
ff3c7f9a 745static int and_callback(const struct option *opt, const char *arg, int unset)
3e230fa1
RS
746{
747 struct grep_opt *grep_opt = opt->value;
517fe807
JK
748 BUG_ON_OPT_NEG(unset);
749 BUG_ON_OPT_ARG(arg);
3e230fa1
RS
750 append_grep_pattern(grep_opt, "--and", "command line", 0, GREP_AND);
751 return 0;
752}
753
ff3c7f9a 754static int open_callback(const struct option *opt, const char *arg, int unset)
3e230fa1
RS
755{
756 struct grep_opt *grep_opt = opt->value;
517fe807
JK
757 BUG_ON_OPT_NEG(unset);
758 BUG_ON_OPT_ARG(arg);
3e230fa1
RS
759 append_grep_pattern(grep_opt, "(", "command line", 0, GREP_OPEN_PAREN);
760 return 0;
761}
762
ff3c7f9a 763static int close_callback(const struct option *opt, const char *arg, int unset)
3e230fa1
RS
764{
765 struct grep_opt *grep_opt = opt->value;
517fe807
JK
766 BUG_ON_OPT_NEG(unset);
767 BUG_ON_OPT_ARG(arg);
3e230fa1
RS
768 append_grep_pattern(grep_opt, ")", "command line", 0, GREP_CLOSE_PAREN);
769 return 0;
770}
771
ff3c7f9a
RS
772static int pattern_callback(const struct option *opt, const char *arg,
773 int unset)
3e230fa1
RS
774{
775 struct grep_opt *grep_opt = opt->value;
517fe807 776 BUG_ON_OPT_NEG(unset);
3e230fa1
RS
777 append_grep_pattern(grep_opt, arg, "-e option", 0, GREP_PATTERN);
778 return 0;
779}
5010cb5f 780
a633fca0 781int cmd_grep(int argc, const char **argv, const char *prefix)
5010cb5f 782{
5010cb5f 783 int hit = 0;
0a93fb8a 784 int cached = 0, untracked = 0, opt_exclude = -1;
5acd64ed 785 int seen_dashdash = 0;
bbc09c22 786 int external_grep_allowed__ignored;
0af88c15 787 const char *show_in_pager = NULL, *default_pager = "dummy";
5010cb5f 788 struct grep_opt opt;
3cd47459 789 struct object_array list = OBJECT_ARRAY_INIT;
f34bbc15 790 struct pathspec pathspec;
183113a5 791 struct string_list path_list = STRING_LIST_INIT_NODUP;
5acd64ed 792 int i;
3e230fa1 793 int dummy;
ff38d1a9 794 int use_index = 1;
84befcd0 795 int pattern_type_arg = GREP_PATTERN_TYPE_UNSPECIFIED;
131f3c96 796 int allow_revs;
cca2c172 797
3e230fa1 798 struct option options[] = {
d5d09d47 799 OPT_BOOL(0, "cached", &cached,
4b407bc5 800 N_("search in index instead of in the work tree")),
cbb08c2e 801 OPT_NEGBIT(0, "no-index", &use_index,
f63cf8c9 802 N_("find in contents not managed by git"), 1),
d5d09d47 803 OPT_BOOL(0, "untracked", &untracked,
4b407bc5 804 N_("search in both tracked and untracked files")),
0a93fb8a 805 OPT_SET_INT(0, "exclude-standard", &opt_exclude,
77fdb8a8 806 N_("ignore files specified via '.gitignore'"), 1),
0281e487 807 OPT_BOOL(0, "recurse-submodules", &recurse_submodules,
4fb1c6aa 808 N_("recursively search in each submodule")),
3e230fa1 809 OPT_GROUP(""),
d5d09d47 810 OPT_BOOL('v', "invert-match", &opt.invert,
4b407bc5 811 N_("show non-matching lines")),
d5d09d47 812 OPT_BOOL('i', "ignore-case", &opt.ignore_case,
4b407bc5 813 N_("case insensitive matching")),
d5d09d47 814 OPT_BOOL('w', "word-regexp", &opt.word_regexp,
4b407bc5 815 N_("match patterns only at word boundaries")),
3e230fa1 816 OPT_SET_INT('a', "text", &opt.binary,
4b407bc5 817 N_("process binary files as text"), GREP_BINARY_TEXT),
3e230fa1 818 OPT_SET_INT('I', NULL, &opt.binary,
4b407bc5 819 N_("don't match patterns in binary files"),
3e230fa1 820 GREP_BINARY_NOMATCH),
335ec3bf
JK
821 OPT_BOOL(0, "textconv", &opt.allow_textconv,
822 N_("process binary files with textconv filters")),
0a09e5ed
RS
823 OPT_SET_INT('r', "recursive", &opt.max_depth,
824 N_("search in subdirectories (default)"), -1),
4b407bc5
NTND
825 { OPTION_INTEGER, 0, "max-depth", &opt.max_depth, N_("depth"),
826 N_("descend at most <depth> levels"), PARSE_OPT_NONEG,
a91f453f 827 NULL, 1 },
3e230fa1 828 OPT_GROUP(""),
84befcd0 829 OPT_SET_INT('E', "extended-regexp", &pattern_type_arg,
4b407bc5 830 N_("use extended POSIX regular expressions"),
84befcd0
S
831 GREP_PATTERN_TYPE_ERE),
832 OPT_SET_INT('G', "basic-regexp", &pattern_type_arg,
4b407bc5 833 N_("use basic POSIX regular expressions (default)"),
84befcd0
S
834 GREP_PATTERN_TYPE_BRE),
835 OPT_SET_INT('F', "fixed-strings", &pattern_type_arg,
4b407bc5 836 N_("interpret patterns as fixed strings"),
84befcd0
S
837 GREP_PATTERN_TYPE_FIXED),
838 OPT_SET_INT('P', "perl-regexp", &pattern_type_arg,
4b407bc5 839 N_("use Perl-compatible regular expressions"),
84befcd0 840 GREP_PATTERN_TYPE_PCRE),
3e230fa1 841 OPT_GROUP(""),
d5d09d47 842 OPT_BOOL('n', "line-number", &opt.linenum, N_("show line numbers")),
a449f27f 843 OPT_BOOL(0, "column", &opt.columnnum, N_("show column number of first match")),
4b407bc5
NTND
844 OPT_NEGBIT('h', NULL, &opt.pathname, N_("don't show filenames"), 1),
845 OPT_BIT('H', NULL, &opt.pathname, N_("show filenames"), 1),
3e230fa1 846 OPT_NEGBIT(0, "full-name", &opt.relative,
4b407bc5 847 N_("show filenames relative to top directory"), 1),
d5d09d47 848 OPT_BOOL('l', "files-with-matches", &opt.name_only,
4b407bc5 849 N_("show only filenames instead of matching lines")),
d5d09d47 850 OPT_BOOL(0, "name-only", &opt.name_only,
4b407bc5 851 N_("synonym for --files-with-matches")),
d5d09d47 852 OPT_BOOL('L', "files-without-match",
3e230fa1 853 &opt.unmatch_name_only,
4b407bc5 854 N_("show only the names of files without match")),
caf2de33
NTND
855 OPT_BOOL_F('z', "null", &opt.null_following_name,
856 N_("print NUL after filenames"),
857 PARSE_OPT_NOCOMPLETE),
9d8db06e
TB
858 OPT_BOOL('o', "only-matching", &opt.only_matching,
859 N_("show only matching parts of a line")),
d5d09d47 860 OPT_BOOL('c', "count", &opt.count,
4b407bc5
NTND
861 N_("show the number of matches instead of matching lines")),
862 OPT__COLOR(&opt.color, N_("highlight matches")),
d5d09d47 863 OPT_BOOL(0, "break", &opt.file_break,
4b407bc5 864 N_("print empty line between matches from different files")),
d5d09d47 865 OPT_BOOL(0, "heading", &opt.heading,
4b407bc5 866 N_("show filename only once above matches from same file")),
3e230fa1 867 OPT_GROUP(""),
4b407bc5
NTND
868 OPT_CALLBACK('C', "context", &opt, N_("n"),
869 N_("show <n> context lines before and after matches"),
3e230fa1 870 context_callback),
317f63c2 871 OPT_INTEGER('B', "before-context", &opt.pre_context,
4b407bc5 872 N_("show <n> context lines before matches")),
317f63c2 873 OPT_INTEGER('A', "after-context", &opt.post_context,
4b407bc5 874 N_("show <n> context lines after matches")),
89f09dd3
VL
875 OPT_INTEGER(0, "threads", &num_threads,
876 N_("use <n> worker threads")),
4b407bc5 877 OPT_NUMBER_CALLBACK(&opt, N_("shortcut for -C NUM"),
3e230fa1 878 context_callback),
d5d09d47 879 OPT_BOOL('p', "show-function", &opt.funcname,
4b407bc5 880 N_("show a line with the function name before matches")),
d5d09d47 881 OPT_BOOL('W', "function-context", &opt.funcbody,
4b407bc5 882 N_("show the surrounding function")),
3e230fa1 883 OPT_GROUP(""),
4b407bc5
NTND
884 OPT_CALLBACK('f', NULL, &opt, N_("file"),
885 N_("read patterns from file"), file_callback),
886 { OPTION_CALLBACK, 'e', NULL, &opt, N_("pattern"),
887 N_("match <pattern>"), PARSE_OPT_NONEG, pattern_callback },
3e230fa1 888 { OPTION_CALLBACK, 0, "and", &opt, NULL,
4b407bc5 889 N_("combine patterns specified with -e"),
3e230fa1 890 PARSE_OPT_NOARG | PARSE_OPT_NONEG, and_callback },
d5d09d47 891 OPT_BOOL(0, "or", &dummy, ""),
3e230fa1
RS
892 { OPTION_CALLBACK, 0, "not", &opt, NULL, "",
893 PARSE_OPT_NOARG | PARSE_OPT_NONEG, not_callback },
894 { OPTION_CALLBACK, '(', NULL, &opt, NULL, "",
895 PARSE_OPT_NOARG | PARSE_OPT_NONEG | PARSE_OPT_NODASH,
896 open_callback },
897 { OPTION_CALLBACK, ')', NULL, &opt, NULL, "",
898 PARSE_OPT_NOARG | PARSE_OPT_NONEG | PARSE_OPT_NODASH,
899 close_callback },
d52ee6e6 900 OPT__QUIET(&opt.status_only,
4b407bc5 901 N_("indicate hit with exit status without output")),
d5d09d47 902 OPT_BOOL(0, "all-match", &opt.all_match,
4b407bc5 903 N_("show only matches from files that match all patterns")),
3e4a67b4
NTND
904 OPT_SET_INT_F(0, "debug", &opt.debug,
905 N_("show parse tree for grep expression"),
906 1, PARSE_OPT_HIDDEN),
3e230fa1 907 OPT_GROUP(""),
0af88c15 908 { OPTION_STRING, 'O', "open-files-in-pager", &show_in_pager,
4b407bc5 909 N_("pager"), N_("show matching files in the pager"),
caf2de33
NTND
910 PARSE_OPT_OPTARG | PARSE_OPT_NOCOMPLETE,
911 NULL, (intptr_t)default_pager },
912 OPT_BOOL_F(0, "ext-grep", &external_grep_allowed__ignored,
913 N_("allow calling of grep(1) (ignored by this build)"),
914 PARSE_OPT_NOCOMPLETE),
3e230fa1
RS
915 OPT_END()
916 };
5010cb5f 917
38bbc2ea 918 init_grep_defaults(the_repository);
15fabd1b 919 git_config(grep_cmd_config, NULL);
38bbc2ea 920 grep_init(&opt, the_repository, prefix);
7e8f59d5 921
5010cb5f 922 /*
5acd64ed
JH
923 * If there is no -- then the paths must exist in the working
924 * tree. If there is no explicit pattern specified with -e or
925 * -f, we take the first unrecognized non option to be the
926 * pattern, but then what follows it must be zero or more
927 * valid refs up to the -- (if exists), and then existing
928 * paths. If there is an explicit pattern, then the first
82e5a82f 929 * unrecognized non option is the beginning of the refs list
5acd64ed 930 * that continues up to the -- (if exists), and then paths.
5010cb5f 931 */
37782920 932 argc = parse_options(argc, argv, prefix, options, grep_usage,
3e230fa1 933 PARSE_OPT_KEEP_DASHDASH |
44415499 934 PARSE_OPT_STOP_AT_NON_OPTION);
c5c31d33 935 grep_commit_pattern_type(pattern_type_arg, &opt);
3e230fa1 936
ecd9ba61
TG
937 if (use_index && !startup_info->have_repository) {
938 int fallback = 0;
939 git_config_get_bool("grep.fallbacktonoindex", &fallback);
940 if (fallback)
941 use_index = 0;
942 else
943 /* die the same way as if we did it at the beginning */
944 setup_git_directory();
945 }
59332d13 946
1123c67c
JK
947 /*
948 * skip a -- separator; we know it cannot be
949 * separating revisions from pathnames if
950 * we haven't even had any patterns yet
951 */
952 if (argc > 0 && !opt.pattern_list && !strcmp(argv[0], "--")) {
953 argv++;
954 argc--;
955 }
956
3e230fa1
RS
957 /* First unrecognized non-option token */
958 if (argc > 0 && !opt.pattern_list) {
959 append_grep_pattern(&opt, argv[0], "command line", 0,
960 GREP_PATTERN);
961 argv++;
962 argc--;
5010cb5f 963 }
5acd64ed 964
0af88c15
JS
965 if (show_in_pager == default_pager)
966 show_in_pager = git_pager(1);
678e484b 967 if (show_in_pager) {
e7b082a4 968 opt.color = 0;
0af88c15
JS
969 opt.name_only = 1;
970 opt.null_following_name = 1;
971 opt.output_priv = &path_list;
972 opt.output = append_path;
0c72cead 973 string_list_append(&path_list, show_in_pager);
678e484b
JS
974 }
975
f9b9faf6 976 if (!opt.pattern_list)
1a07e59c 977 die(_("no pattern given"));
5b594f45 978
9d8db06e
TB
979 /* --only-matching has no effect with --invert. */
980 if (opt.invert)
981 opt.only_matching = 0;
982
b5b81136
JK
983 /*
984 * We have to find "--" in a separate pass, because its presence
985 * influences how we will parse arguments that come before it.
986 */
987 for (i = 0; i < argc; i++) {
988 if (!strcmp(argv[i], "--")) {
989 seen_dashdash = 1;
990 break;
991 }
992 }
993
994 /*
995 * Resolve any rev arguments. If we have a dashdash, then everything up
996 * to it must resolve as a rev. If not, then we stop at the first
997 * non-rev and assume everything else is a path.
998 */
131f3c96 999 allow_revs = use_index && !untracked;
3e230fa1 1000 for (i = 0; i < argc; i++) {
5acd64ed 1001 const char *arg = argv[i];
1db11086 1002 struct object_id oid;
afa15f3c 1003 struct object_context oc;
20d6421c
JK
1004 struct object *object;
1005
dca3b5f5
JT
1006 if (!strcmp(arg, "--")) {
1007 i++;
dca3b5f5
JT
1008 break;
1009 }
20d6421c 1010
131f3c96 1011 if (!allow_revs) {
d0ffc069 1012 if (seen_dashdash)
131f3c96 1013 die(_("--no-index or --untracked cannot be used with revs"));
d0ffc069
JK
1014 break;
1015 }
1016
321c89bf 1017 if (get_oid_with_context(arg, GET_OID_RECORD_PATH,
e82caf38 1018 &oid, &oc)) {
b5b81136
JK
1019 if (seen_dashdash)
1020 die(_("unable to resolve revision: %s"), arg);
20d6421c 1021 break;
b5b81136 1022 }
20d6421c 1023
c251c83d 1024 object = parse_object_or_die(&oid, arg);
20d6421c
JK
1025 if (!seen_dashdash)
1026 verify_non_filename(prefix, arg);
1027 add_object_array_with_path(object, arg, &list, oc.mode, oc.path);
dc944b65 1028 free(oc.path);
1362671f 1029 }
5acd64ed 1030
b5b81136
JK
1031 /*
1032 * Anything left over is presumed to be a path. But in the non-dashdash
1033 * "do what I mean" case, we verify and complain when that isn't true.
1034 */
a0fe2b0d
JK
1035 if (!seen_dashdash) {
1036 int j;
1037 for (j = i; j < argc; j++)
131f3c96 1038 verify_filename(prefix, argv[j], j == i && allow_revs);
a0fe2b0d
JK
1039 }
1040
1041 parse_pathspec(&pathspec, 0,
1042 PATHSPEC_PREFER_CWD |
1043 (opt.max_depth != -1 ? PATHSPEC_MAXDEPTH_VALID : 0),
1044 prefix, argv + i);
1045 pathspec.max_depth = opt.max_depth;
1046 pathspec.recursive = 1;
eef3df5a 1047 pathspec.recurse_submodules = !!recurse_submodules;
a0fe2b0d 1048
fd6263fb
NTND
1049 if (list.nr || cached || show_in_pager) {
1050 if (num_threads > 1)
1051 warning(_("invalid option combination, ignoring --threads"));
1052 num_threads = 1;
1053 } else if (!HAVE_THREADS && num_threads > 1) {
d1edee4a 1054 warning(_("no threads support, ignoring --threads"));
fd6263fb
NTND
1055 num_threads = 1;
1056 } else if (num_threads < 0)
1057 die(_("invalid number of threads specified (%d)"), num_threads);
1058 else if (num_threads == 0)
1059 num_threads = HAVE_THREADS ? GREP_NUM_THREADS_DEFAULT : 1;
53b8d931 1060
fd6263fb
NTND
1061 if (num_threads > 1) {
1062 if (!HAVE_THREADS)
1063 BUG("Somebody got num_threads calculation wrong!");
1064 if (!(opt.name_only || opt.unmatch_name_only || opt.count)
1065 && (opt.pre_context || opt.post_context ||
1066 opt.file_break || opt.funcbody))
1067 skip_first_line = 1;
1068 start_threads(&opt);
4002e87c 1069 } else {
6d423dd5
ÆAB
1070 /*
1071 * The compiled patterns on the main path are only
1072 * used when not using threading. Otherwise
fd6263fb 1073 * start_threads() above calls compile_grep_patterns()
6d423dd5
ÆAB
1074 * for each thread.
1075 */
1076 compile_grep_patterns(&opt);
53b8d931 1077 }
53b8d931 1078
678e484b 1079 if (show_in_pager && (cached || list.nr))
e4fe4ba5 1080 die(_("--open-files-in-pager only works on the worktree"));
678e484b
JS
1081
1082 if (show_in_pager && opt.pattern_list && !opt.pattern_list->next) {
1083 const char *pager = path_list.items[0].string;
1084 int len = strlen(pager);
1085
1086 if (len > 4 && is_dir_sep(pager[len - 5]))
1087 pager += len - 4;
1088
f7febbea
JS
1089 if (opt.ignore_case && !strcmp("less", pager))
1090 string_list_append(&path_list, "-I");
1091
678e484b
JS
1092 if (!strcmp("less", pager) || !strcmp("vi", pager)) {
1093 struct strbuf buf = STRBUF_INIT;
1094 strbuf_addf(&buf, "+/%s%s",
1095 strcmp("less", pager) ? "" : "*",
1096 opt.pattern_list->pattern);
0c72cead 1097 string_list_append(&path_list, buf.buf);
678e484b
JS
1098 strbuf_detach(&buf, NULL);
1099 }
1100 }
1101
74ed4371 1102 if (recurse_submodules && (!use_index || untracked))
1a07e59c 1103 die(_("option not supported with --recurse-submodules"));
0281e487 1104
c2048f0b 1105 if (!show_in_pager && !opt.status_only)
678e484b
JS
1106 setup_pager();
1107
0a93fb8a 1108 if (!use_index && (untracked || cached))
1a07e59c 1109 die(_("--cached or --untracked cannot be used with --no-index"));
678e484b 1110
0a93fb8a 1111 if (!use_index || untracked) {
0a93fb8a 1112 int use_exclude = (opt_exclude < 0) ? use_index : !!opt_exclude;
85975c0c 1113 hit = grep_directory(&opt, &pathspec, use_exclude, use_index);
dbfae86a 1114 } else if (0 <= opt_exclude) {
1a07e59c 1115 die(_("--[no-]exclude-standard cannot be used for tracked contents"));
685359cf 1116 } else if (!list.nr) {
6577f542
NTND
1117 if (!cached)
1118 setup_work_tree();
5b594f45 1119
f9ee2fcd 1120 hit = grep_cache(&opt, the_repository, &pathspec, cached);
685359cf
JS
1121 } else {
1122 if (cached)
1a07e59c 1123 die(_("both --cached and trees are given"));
f9ee2fcd 1124
6856077a 1125 hit = grep_objects(&opt, &pathspec, &list);
5010cb5f 1126 }
5b594f45 1127
fd6263fb 1128 if (num_threads > 1)
5b594f45 1129 hit |= wait_all();
678e484b
JS
1130 if (hit && show_in_pager)
1131 run_pager(&opt, prefix);
7861fa07 1132 clear_pathspec(&pathspec);
b48fb5b6 1133 free_grep_patterns(&opt);
5010cb5f
JH
1134 return !hit;
1135}