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-rw-r--r--third_party/git/builtin/grep.c1175
1 files changed, 0 insertions, 1175 deletions
diff --git a/third_party/git/builtin/grep.c b/third_party/git/builtin/grep.c
deleted file mode 100644
index c8037388c6e7..000000000000
--- a/third_party/git/builtin/grep.c
+++ /dev/null
@@ -1,1175 +0,0 @@
-/*
- * Builtin "git grep"
- *
- * Copyright (c) 2006 Junio C Hamano
- */
-#define USE_THE_INDEX_COMPATIBILITY_MACROS
-#include "cache.h"
-#include "repository.h"
-#include "config.h"
-#include "blob.h"
-#include "tree.h"
-#include "commit.h"
-#include "tag.h"
-#include "tree-walk.h"
-#include "builtin.h"
-#include "parse-options.h"
-#include "string-list.h"
-#include "run-command.h"
-#include "userdiff.h"
-#include "grep.h"
-#include "quote.h"
-#include "dir.h"
-#include "pathspec.h"
-#include "submodule.h"
-#include "submodule-config.h"
-#include "object-store.h"
-#include "packfile.h"
-
-static char const * const grep_usage[] = {
-	N_("git grep [<options>] [-e] <pattern> [<rev>...] [[--] <path>...]"),
-	NULL
-};
-
-static int recurse_submodules;
-
-static int num_threads;
-
-static pthread_t *threads;
-
-/* We use one producer thread and THREADS consumer
- * threads. The producer adds struct work_items to 'todo' and the
- * consumers pick work items from the same array.
- */
-struct work_item {
-	struct grep_source source;
-	char done;
-	struct strbuf out;
-};
-
-/* In the range [todo_done, todo_start) in 'todo' we have work_items
- * that have been or are processed by a consumer thread. We haven't
- * written the result for these to stdout yet.
- *
- * The work_items in [todo_start, todo_end) are waiting to be picked
- * up by a consumer thread.
- *
- * The ranges are modulo TODO_SIZE.
- */
-#define TODO_SIZE 128
-static struct work_item todo[TODO_SIZE];
-static int todo_start;
-static int todo_end;
-static int todo_done;
-
-/* Has all work items been added? */
-static int all_work_added;
-
-/* This lock protects all the variables above. */
-static pthread_mutex_t grep_mutex;
-
-static inline void grep_lock(void)
-{
-	pthread_mutex_lock(&grep_mutex);
-}
-
-static inline void grep_unlock(void)
-{
-	pthread_mutex_unlock(&grep_mutex);
-}
-
-/* Signalled when a new work_item is added to todo. */
-static pthread_cond_t cond_add;
-
-/* Signalled when the result from one work_item is written to
- * stdout.
- */
-static pthread_cond_t cond_write;
-
-/* Signalled when we are finished with everything. */
-static pthread_cond_t cond_result;
-
-static int skip_first_line;
-
-static void add_work(struct grep_opt *opt, struct grep_source *gs)
-{
-	if (opt->binary != GREP_BINARY_TEXT)
-		grep_source_load_driver(gs, opt->repo->index);
-
-	grep_lock();
-
-	while ((todo_end+1) % ARRAY_SIZE(todo) == todo_done) {
-		pthread_cond_wait(&cond_write, &grep_mutex);
-	}
-
-	todo[todo_end].source = *gs;
-	todo[todo_end].done = 0;
-	strbuf_reset(&todo[todo_end].out);
-	todo_end = (todo_end + 1) % ARRAY_SIZE(todo);
-
-	pthread_cond_signal(&cond_add);
-	grep_unlock();
-}
-
-static struct work_item *get_work(void)
-{
-	struct work_item *ret;
-
-	grep_lock();
-	while (todo_start == todo_end && !all_work_added) {
-		pthread_cond_wait(&cond_add, &grep_mutex);
-	}
-
-	if (todo_start == todo_end && all_work_added) {
-		ret = NULL;
-	} else {
-		ret = &todo[todo_start];
-		todo_start = (todo_start + 1) % ARRAY_SIZE(todo);
-	}
-	grep_unlock();
-	return ret;
-}
-
-static void work_done(struct work_item *w)
-{
-	int old_done;
-
-	grep_lock();
-	w->done = 1;
-	old_done = todo_done;
-	for(; todo[todo_done].done && todo_done != todo_start;
-	    todo_done = (todo_done+1) % ARRAY_SIZE(todo)) {
-		w = &todo[todo_done];
-		if (w->out.len) {
-			const char *p = w->out.buf;
-			size_t len = w->out.len;
-
-			/* Skip the leading hunk mark of the first file. */
-			if (skip_first_line) {
-				while (len) {
-					len--;
-					if (*p++ == '\n')
-						break;
-				}
-				skip_first_line = 0;
-			}
-
-			write_or_die(1, p, len);
-		}
-		grep_source_clear(&w->source);
-	}
-
-	if (old_done != todo_done)
-		pthread_cond_signal(&cond_write);
-
-	if (all_work_added && todo_done == todo_end)
-		pthread_cond_signal(&cond_result);
-
-	grep_unlock();
-}
-
-static void *run(void *arg)
-{
-	int hit = 0;
-	struct grep_opt *opt = arg;
-
-	while (1) {
-		struct work_item *w = get_work();
-		if (!w)
-			break;
-
-		opt->output_priv = w;
-		hit |= grep_source(opt, &w->source);
-		grep_source_clear_data(&w->source);
-		work_done(w);
-	}
-	free_grep_patterns(arg);
-	free(arg);
-
-	return (void*) (intptr_t) hit;
-}
-
-static void strbuf_out(struct grep_opt *opt, const void *buf, size_t size)
-{
-	struct work_item *w = opt->output_priv;
-	strbuf_add(&w->out, buf, size);
-}
-
-static void start_threads(struct grep_opt *opt)
-{
-	int i;
-
-	pthread_mutex_init(&grep_mutex, NULL);
-	pthread_mutex_init(&grep_attr_mutex, NULL);
-	pthread_cond_init(&cond_add, NULL);
-	pthread_cond_init(&cond_write, NULL);
-	pthread_cond_init(&cond_result, NULL);
-	grep_use_locks = 1;
-	enable_obj_read_lock();
-
-	for (i = 0; i < ARRAY_SIZE(todo); i++) {
-		strbuf_init(&todo[i].out, 0);
-	}
-
-	threads = xcalloc(num_threads, sizeof(*threads));
-	for (i = 0; i < num_threads; i++) {
-		int err;
-		struct grep_opt *o = grep_opt_dup(opt);
-		o->output = strbuf_out;
-		if (i)
-			o->debug = 0;
-		compile_grep_patterns(o);
-		err = pthread_create(&threads[i], NULL, run, o);
-
-		if (err)
-			die(_("grep: failed to create thread: %s"),
-			    strerror(err));
-	}
-}
-
-static int wait_all(void)
-{
-	int hit = 0;
-	int i;
-
-	if (!HAVE_THREADS)
-		BUG("Never call this function unless you have started threads");
-
-	grep_lock();
-	all_work_added = 1;
-
-	/* Wait until all work is done. */
-	while (todo_done != todo_end)
-		pthread_cond_wait(&cond_result, &grep_mutex);
-
-	/* Wake up all the consumer threads so they can see that there
-	 * is no more work to do.
-	 */
-	pthread_cond_broadcast(&cond_add);
-	grep_unlock();
-
-	for (i = 0; i < num_threads; i++) {
-		void *h;
-		pthread_join(threads[i], &h);
-		hit |= (int) (intptr_t) h;
-	}
-
-	free(threads);
-
-	pthread_mutex_destroy(&grep_mutex);
-	pthread_mutex_destroy(&grep_attr_mutex);
-	pthread_cond_destroy(&cond_add);
-	pthread_cond_destroy(&cond_write);
-	pthread_cond_destroy(&cond_result);
-	grep_use_locks = 0;
-	disable_obj_read_lock();
-
-	return hit;
-}
-
-static int grep_cmd_config(const char *var, const char *value, void *cb)
-{
-	int st = grep_config(var, value, cb);
-	if (git_color_default_config(var, value, cb) < 0)
-		st = -1;
-
-	if (!strcmp(var, "grep.threads")) {
-		num_threads = git_config_int(var, value);
-		if (num_threads < 0)
-			die(_("invalid number of threads specified (%d) for %s"),
-			    num_threads, var);
-		else if (!HAVE_THREADS && num_threads > 1) {
-			/*
-			 * TRANSLATORS: %s is the configuration
-			 * variable for tweaking threads, currently
-			 * grep.threads
-			 */
-			warning(_("no threads support, ignoring %s"), var);
-			num_threads = 1;
-		}
-	}
-
-	if (!strcmp(var, "submodule.recurse"))
-		recurse_submodules = git_config_bool(var, value);
-
-	return st;
-}
-
-static void grep_source_name(struct grep_opt *opt, const char *filename,
-			     int tree_name_len, struct strbuf *out)
-{
-	strbuf_reset(out);
-
-	if (opt->null_following_name) {
-		if (opt->relative && opt->prefix_length) {
-			struct strbuf rel_buf = STRBUF_INIT;
-			const char *rel_name =
-				relative_path(filename + tree_name_len,
-					      opt->prefix, &rel_buf);
-
-			if (tree_name_len)
-				strbuf_add(out, filename, tree_name_len);
-
-			strbuf_addstr(out, rel_name);
-			strbuf_release(&rel_buf);
-		} else {
-			strbuf_addstr(out, filename);
-		}
-		return;
-	}
-
-	if (opt->relative && opt->prefix_length)
-		quote_path(filename + tree_name_len, opt->prefix, out, 0);
-	else
-		quote_c_style(filename + tree_name_len, out, NULL, 0);
-
-	if (tree_name_len)
-		strbuf_insert(out, 0, filename, tree_name_len);
-}
-
-static int grep_oid(struct grep_opt *opt, const struct object_id *oid,
-		     const char *filename, int tree_name_len,
-		     const char *path)
-{
-	struct strbuf pathbuf = STRBUF_INIT;
-	struct grep_source gs;
-
-	grep_source_name(opt, filename, tree_name_len, &pathbuf);
-	grep_source_init(&gs, GREP_SOURCE_OID, pathbuf.buf, path, oid);
-	strbuf_release(&pathbuf);
-
-	if (num_threads > 1) {
-		/*
-		 * add_work() copies gs and thus assumes ownership of
-		 * its fields, so do not call grep_source_clear()
-		 */
-		add_work(opt, &gs);
-		return 0;
-	} else {
-		int hit;
-
-		hit = grep_source(opt, &gs);
-
-		grep_source_clear(&gs);
-		return hit;
-	}
-}
-
-static int grep_file(struct grep_opt *opt, const char *filename)
-{
-	struct strbuf buf = STRBUF_INIT;
-	struct grep_source gs;
-
-	grep_source_name(opt, filename, 0, &buf);
-	grep_source_init(&gs, GREP_SOURCE_FILE, buf.buf, filename, filename);
-	strbuf_release(&buf);
-
-	if (num_threads > 1) {
-		/*
-		 * add_work() copies gs and thus assumes ownership of
-		 * its fields, so do not call grep_source_clear()
-		 */
-		add_work(opt, &gs);
-		return 0;
-	} else {
-		int hit;
-
-		hit = grep_source(opt, &gs);
-
-		grep_source_clear(&gs);
-		return hit;
-	}
-}
-
-static void append_path(struct grep_opt *opt, const void *data, size_t len)
-{
-	struct string_list *path_list = opt->output_priv;
-
-	if (len == 1 && *(const char *)data == '\0')
-		return;
-	string_list_append(path_list, xstrndup(data, len));
-}
-
-static void run_pager(struct grep_opt *opt, const char *prefix)
-{
-	struct string_list *path_list = opt->output_priv;
-	struct child_process child = CHILD_PROCESS_INIT;
-	int i, status;
-
-	for (i = 0; i < path_list->nr; i++)
-		strvec_push(&child.args, path_list->items[i].string);
-	child.dir = prefix;
-	child.use_shell = 1;
-
-	status = run_command(&child);
-	if (status)
-		exit(status);
-}
-
-static int grep_cache(struct grep_opt *opt,
-		      const struct pathspec *pathspec, int cached);
-static int grep_tree(struct grep_opt *opt, const struct pathspec *pathspec,
-		     struct tree_desc *tree, struct strbuf *base, int tn_len,
-		     int check_attr);
-
-static int grep_submodule(struct grep_opt *opt,
-			  const struct pathspec *pathspec,
-			  const struct object_id *oid,
-			  const char *filename, const char *path, int cached)
-{
-	struct repository subrepo;
-	struct repository *superproject = opt->repo;
-	const struct submodule *sub;
-	struct grep_opt subopt;
-	int hit;
-
-	sub = submodule_from_path(superproject, &null_oid, path);
-
-	if (!is_submodule_active(superproject, path))
-		return 0;
-
-	if (repo_submodule_init(&subrepo, superproject, sub))
-		return 0;
-
-	/*
-	 * NEEDSWORK: repo_read_gitmodules() might call
-	 * add_to_alternates_memory() via config_from_gitmodules(). This
-	 * operation causes a race condition with concurrent object readings
-	 * performed by the worker threads. That's why we need obj_read_lock()
-	 * here. It should be removed once it's no longer necessary to add the
-	 * subrepo's odbs to the in-memory alternates list.
-	 */
-	obj_read_lock();
-	repo_read_gitmodules(&subrepo, 0);
-
-	/*
-	 * NEEDSWORK: This adds the submodule's object directory to the list of
-	 * alternates for the single in-memory object store.  This has some bad
-	 * consequences for memory (processed objects will never be freed) and
-	 * performance (this increases the number of pack files git has to pay
-	 * attention to, to the sum of the number of pack files in all the
-	 * repositories processed so far).  This can be removed once the object
-	 * store is no longer global and instead is a member of the repository
-	 * object.
-	 */
-	add_to_alternates_memory(subrepo.objects->odb->path);
-	obj_read_unlock();
-
-	memcpy(&subopt, opt, sizeof(subopt));
-	subopt.repo = &subrepo;
-
-	if (oid) {
-		struct object *object;
-		struct tree_desc tree;
-		void *data;
-		unsigned long size;
-		struct strbuf base = STRBUF_INIT;
-
-		obj_read_lock();
-		object = parse_object_or_die(oid, NULL);
-		obj_read_unlock();
-		data = read_object_with_reference(&subrepo,
-						  &object->oid, tree_type,
-						  &size, NULL);
-		if (!data)
-			die(_("unable to read tree (%s)"), oid_to_hex(&object->oid));
-
-		strbuf_addstr(&base, filename);
-		strbuf_addch(&base, '/');
-
-		init_tree_desc(&tree, data, size);
-		hit = grep_tree(&subopt, pathspec, &tree, &base, base.len,
-				object->type == OBJ_COMMIT);
-		strbuf_release(&base);
-		free(data);
-	} else {
-		hit = grep_cache(&subopt, pathspec, cached);
-	}
-
-	repo_clear(&subrepo);
-	return hit;
-}
-
-static int grep_cache(struct grep_opt *opt,
-		      const struct pathspec *pathspec, int cached)
-{
-	struct repository *repo = opt->repo;
-	int hit = 0;
-	int nr;
-	struct strbuf name = STRBUF_INIT;
-	int name_base_len = 0;
-	if (repo->submodule_prefix) {
-		name_base_len = strlen(repo->submodule_prefix);
-		strbuf_addstr(&name, repo->submodule_prefix);
-	}
-
-	if (repo_read_index(repo) < 0)
-		die(_("index file corrupt"));
-
-	for (nr = 0; nr < repo->index->cache_nr; nr++) {
-		const struct cache_entry *ce = repo->index->cache[nr];
-		strbuf_setlen(&name, name_base_len);
-		strbuf_addstr(&name, ce->name);
-
-		if (S_ISREG(ce->ce_mode) &&
-		    match_pathspec(repo->index, pathspec, name.buf, name.len, 0, NULL,
-				   S_ISDIR(ce->ce_mode) ||
-				   S_ISGITLINK(ce->ce_mode))) {
-			/*
-			 * If CE_VALID is on, we assume worktree file and its
-			 * cache entry are identical, even if worktree file has
-			 * been modified, so use cache version instead
-			 */
-			if (cached || (ce->ce_flags & CE_VALID) ||
-			    ce_skip_worktree(ce)) {
-				if (ce_stage(ce) || ce_intent_to_add(ce))
-					continue;
-				hit |= grep_oid(opt, &ce->oid, name.buf,
-						 0, name.buf);
-			} else {
-				hit |= grep_file(opt, name.buf);
-			}
-		} else if (recurse_submodules && S_ISGITLINK(ce->ce_mode) &&
-			   submodule_path_match(repo->index, pathspec, name.buf, NULL)) {
-			hit |= grep_submodule(opt, pathspec, NULL, ce->name,
-					      ce->name, cached);
-		} else {
-			continue;
-		}
-
-		if (ce_stage(ce)) {
-			do {
-				nr++;
-			} while (nr < repo->index->cache_nr &&
-				 !strcmp(ce->name, repo->index->cache[nr]->name));
-			nr--; /* compensate for loop control */
-		}
-		if (hit && opt->status_only)
-			break;
-	}
-
-	strbuf_release(&name);
-	return hit;
-}
-
-static int grep_tree(struct grep_opt *opt, const struct pathspec *pathspec,
-		     struct tree_desc *tree, struct strbuf *base, int tn_len,
-		     int check_attr)
-{
-	struct repository *repo = opt->repo;
-	int hit = 0;
-	enum interesting match = entry_not_interesting;
-	struct name_entry entry;
-	int old_baselen = base->len;
-	struct strbuf name = STRBUF_INIT;
-	int name_base_len = 0;
-	if (repo->submodule_prefix) {
-		strbuf_addstr(&name, repo->submodule_prefix);
-		name_base_len = name.len;
-	}
-
-	while (tree_entry(tree, &entry)) {
-		int te_len = tree_entry_len(&entry);
-
-		if (match != all_entries_interesting) {
-			strbuf_addstr(&name, base->buf + tn_len);
-			match = tree_entry_interesting(repo->index,
-						       &entry, &name,
-						       0, pathspec);
-			strbuf_setlen(&name, name_base_len);
-
-			if (match == all_entries_not_interesting)
-				break;
-			if (match == entry_not_interesting)
-				continue;
-		}
-
-		strbuf_add(base, entry.path, te_len);
-
-		if (S_ISREG(entry.mode)) {
-			hit |= grep_oid(opt, &entry.oid, base->buf, tn_len,
-					 check_attr ? base->buf + tn_len : NULL);
-		} else if (S_ISDIR(entry.mode)) {
-			enum object_type type;
-			struct tree_desc sub;
-			void *data;
-			unsigned long size;
-
-			data = read_object_file(&entry.oid, &type, &size);
-			if (!data)
-				die(_("unable to read tree (%s)"),
-				    oid_to_hex(&entry.oid));
-
-			strbuf_addch(base, '/');
-			init_tree_desc(&sub, data, size);
-			hit |= grep_tree(opt, pathspec, &sub, base, tn_len,
-					 check_attr);
-			free(data);
-		} else if (recurse_submodules && S_ISGITLINK(entry.mode)) {
-			hit |= grep_submodule(opt, pathspec, &entry.oid,
-					      base->buf, base->buf + tn_len,
-					      1); /* ignored */
-		}
-
-		strbuf_setlen(base, old_baselen);
-
-		if (hit && opt->status_only)
-			break;
-	}
-
-	strbuf_release(&name);
-	return hit;
-}
-
-static int grep_object(struct grep_opt *opt, const struct pathspec *pathspec,
-		       struct object *obj, const char *name, const char *path)
-{
-	if (obj->type == OBJ_BLOB)
-		return grep_oid(opt, &obj->oid, name, 0, path);
-	if (obj->type == OBJ_COMMIT || obj->type == OBJ_TREE) {
-		struct tree_desc tree;
-		void *data;
-		unsigned long size;
-		struct strbuf base;
-		int hit, len;
-
-		data = read_object_with_reference(opt->repo,
-						  &obj->oid, tree_type,
-						  &size, NULL);
-		if (!data)
-			die(_("unable to read tree (%s)"), oid_to_hex(&obj->oid));
-
-		len = name ? strlen(name) : 0;
-		strbuf_init(&base, PATH_MAX + len + 1);
-		if (len) {
-			strbuf_add(&base, name, len);
-			strbuf_addch(&base, ':');
-		}
-		init_tree_desc(&tree, data, size);
-		hit = grep_tree(opt, pathspec, &tree, &base, base.len,
-				obj->type == OBJ_COMMIT);
-		strbuf_release(&base);
-		free(data);
-		return hit;
-	}
-	die(_("unable to grep from object of type %s"), type_name(obj->type));
-}
-
-static int grep_objects(struct grep_opt *opt, const struct pathspec *pathspec,
-			const struct object_array *list)
-{
-	unsigned int i;
-	int hit = 0;
-	const unsigned int nr = list->nr;
-
-	for (i = 0; i < nr; i++) {
-		struct object *real_obj;
-
-		obj_read_lock();
-		real_obj = deref_tag(opt->repo, list->objects[i].item,
-				     NULL, 0);
-		obj_read_unlock();
-
-		/* load the gitmodules file for this rev */
-		if (recurse_submodules) {
-			submodule_free(opt->repo);
-			obj_read_lock();
-			gitmodules_config_oid(&real_obj->oid);
-			obj_read_unlock();
-		}
-		if (grep_object(opt, pathspec, real_obj, list->objects[i].name,
-				list->objects[i].path)) {
-			hit = 1;
-			if (opt->status_only)
-				break;
-		}
-	}
-	return hit;
-}
-
-static int grep_directory(struct grep_opt *opt, const struct pathspec *pathspec,
-			  int exc_std, int use_index)
-{
-	struct dir_struct dir;
-	int i, hit = 0;
-
-	dir_init(&dir);
-	if (!use_index)
-		dir.flags |= DIR_NO_GITLINKS;
-	if (exc_std)
-		setup_standard_excludes(&dir);
-
-	fill_directory(&dir, opt->repo->index, pathspec);
-	for (i = 0; i < dir.nr; i++) {
-		hit |= grep_file(opt, dir.entries[i]->name);
-		if (hit && opt->status_only)
-			break;
-	}
-	dir_clear(&dir);
-	return hit;
-}
-
-static int context_callback(const struct option *opt, const char *arg,
-			    int unset)
-{
-	struct grep_opt *grep_opt = opt->value;
-	int value;
-	const char *endp;
-
-	if (unset) {
-		grep_opt->pre_context = grep_opt->post_context = 0;
-		return 0;
-	}
-	value = strtol(arg, (char **)&endp, 10);
-	if (*endp) {
-		return error(_("switch `%c' expects a numerical value"),
-			     opt->short_name);
-	}
-	grep_opt->pre_context = grep_opt->post_context = value;
-	return 0;
-}
-
-static int file_callback(const struct option *opt, const char *arg, int unset)
-{
-	struct grep_opt *grep_opt = opt->value;
-	int from_stdin;
-	FILE *patterns;
-	int lno = 0;
-	struct strbuf sb = STRBUF_INIT;
-
-	BUG_ON_OPT_NEG(unset);
-
-	from_stdin = !strcmp(arg, "-");
-	patterns = from_stdin ? stdin : fopen(arg, "r");
-	if (!patterns)
-		die_errno(_("cannot open '%s'"), arg);
-	while (strbuf_getline(&sb, patterns) == 0) {
-		/* ignore empty line like grep does */
-		if (sb.len == 0)
-			continue;
-
-		append_grep_pat(grep_opt, sb.buf, sb.len, arg, ++lno,
-				GREP_PATTERN);
-	}
-	if (!from_stdin)
-		fclose(patterns);
-	strbuf_release(&sb);
-	return 0;
-}
-
-static int not_callback(const struct option *opt, const char *arg, int unset)
-{
-	struct grep_opt *grep_opt = opt->value;
-	BUG_ON_OPT_NEG(unset);
-	BUG_ON_OPT_ARG(arg);
-	append_grep_pattern(grep_opt, "--not", "command line", 0, GREP_NOT);
-	return 0;
-}
-
-static int and_callback(const struct option *opt, const char *arg, int unset)
-{
-	struct grep_opt *grep_opt = opt->value;
-	BUG_ON_OPT_NEG(unset);
-	BUG_ON_OPT_ARG(arg);
-	append_grep_pattern(grep_opt, "--and", "command line", 0, GREP_AND);
-	return 0;
-}
-
-static int open_callback(const struct option *opt, const char *arg, int unset)
-{
-	struct grep_opt *grep_opt = opt->value;
-	BUG_ON_OPT_NEG(unset);
-	BUG_ON_OPT_ARG(arg);
-	append_grep_pattern(grep_opt, "(", "command line", 0, GREP_OPEN_PAREN);
-	return 0;
-}
-
-static int close_callback(const struct option *opt, const char *arg, int unset)
-{
-	struct grep_opt *grep_opt = opt->value;
-	BUG_ON_OPT_NEG(unset);
-	BUG_ON_OPT_ARG(arg);
-	append_grep_pattern(grep_opt, ")", "command line", 0, GREP_CLOSE_PAREN);
-	return 0;
-}
-
-static int pattern_callback(const struct option *opt, const char *arg,
-			    int unset)
-{
-	struct grep_opt *grep_opt = opt->value;
-	BUG_ON_OPT_NEG(unset);
-	append_grep_pattern(grep_opt, arg, "-e option", 0, GREP_PATTERN);
-	return 0;
-}
-
-int cmd_grep(int argc, const char **argv, const char *prefix)
-{
-	int hit = 0;
-	int cached = 0, untracked = 0, opt_exclude = -1;
-	int seen_dashdash = 0;
-	int external_grep_allowed__ignored;
-	const char *show_in_pager = NULL, *default_pager = "dummy";
-	struct grep_opt opt;
-	struct object_array list = OBJECT_ARRAY_INIT;
-	struct pathspec pathspec;
-	struct string_list path_list = STRING_LIST_INIT_NODUP;
-	int i;
-	int dummy;
-	int use_index = 1;
-	int pattern_type_arg = GREP_PATTERN_TYPE_UNSPECIFIED;
-	int allow_revs;
-
-	struct option options[] = {
-		OPT_BOOL(0, "cached", &cached,
-			N_("search in index instead of in the work tree")),
-		OPT_NEGBIT(0, "no-index", &use_index,
-			 N_("find in contents not managed by git"), 1),
-		OPT_BOOL(0, "untracked", &untracked,
-			N_("search in both tracked and untracked files")),
-		OPT_SET_INT(0, "exclude-standard", &opt_exclude,
-			    N_("ignore files specified via '.gitignore'"), 1),
-		OPT_BOOL(0, "recurse-submodules", &recurse_submodules,
-			 N_("recursively search in each submodule")),
-		OPT_GROUP(""),
-		OPT_BOOL('v', "invert-match", &opt.invert,
-			N_("show non-matching lines")),
-		OPT_BOOL('i', "ignore-case", &opt.ignore_case,
-			N_("case insensitive matching")),
-		OPT_BOOL('w', "word-regexp", &opt.word_regexp,
-			N_("match patterns only at word boundaries")),
-		OPT_SET_INT('a', "text", &opt.binary,
-			N_("process binary files as text"), GREP_BINARY_TEXT),
-		OPT_SET_INT('I', NULL, &opt.binary,
-			N_("don't match patterns in binary files"),
-			GREP_BINARY_NOMATCH),
-		OPT_BOOL(0, "textconv", &opt.allow_textconv,
-			 N_("process binary files with textconv filters")),
-		OPT_SET_INT('r', "recursive", &opt.max_depth,
-			    N_("search in subdirectories (default)"), -1),
-		{ OPTION_INTEGER, 0, "max-depth", &opt.max_depth, N_("depth"),
-			N_("descend at most <depth> levels"), PARSE_OPT_NONEG,
-			NULL, 1 },
-		OPT_GROUP(""),
-		OPT_SET_INT('E', "extended-regexp", &pattern_type_arg,
-			    N_("use extended POSIX regular expressions"),
-			    GREP_PATTERN_TYPE_ERE),
-		OPT_SET_INT('G', "basic-regexp", &pattern_type_arg,
-			    N_("use basic POSIX regular expressions (default)"),
-			    GREP_PATTERN_TYPE_BRE),
-		OPT_SET_INT('F', "fixed-strings", &pattern_type_arg,
-			    N_("interpret patterns as fixed strings"),
-			    GREP_PATTERN_TYPE_FIXED),
-		OPT_SET_INT('P', "perl-regexp", &pattern_type_arg,
-			    N_("use Perl-compatible regular expressions"),
-			    GREP_PATTERN_TYPE_PCRE),
-		OPT_GROUP(""),
-		OPT_BOOL('n', "line-number", &opt.linenum, N_("show line numbers")),
-		OPT_BOOL(0, "column", &opt.columnnum, N_("show column number of first match")),
-		OPT_NEGBIT('h', NULL, &opt.pathname, N_("don't show filenames"), 1),
-		OPT_BIT('H', NULL, &opt.pathname, N_("show filenames"), 1),
-		OPT_NEGBIT(0, "full-name", &opt.relative,
-			N_("show filenames relative to top directory"), 1),
-		OPT_BOOL('l', "files-with-matches", &opt.name_only,
-			N_("show only filenames instead of matching lines")),
-		OPT_BOOL(0, "name-only", &opt.name_only,
-			N_("synonym for --files-with-matches")),
-		OPT_BOOL('L', "files-without-match",
-			&opt.unmatch_name_only,
-			N_("show only the names of files without match")),
-		OPT_BOOL_F('z', "null", &opt.null_following_name,
-			   N_("print NUL after filenames"),
-			   PARSE_OPT_NOCOMPLETE),
-		OPT_BOOL('o', "only-matching", &opt.only_matching,
-			N_("show only matching parts of a line")),
-		OPT_BOOL('c', "count", &opt.count,
-			N_("show the number of matches instead of matching lines")),
-		OPT__COLOR(&opt.color, N_("highlight matches")),
-		OPT_BOOL(0, "break", &opt.file_break,
-			N_("print empty line between matches from different files")),
-		OPT_BOOL(0, "heading", &opt.heading,
-			N_("show filename only once above matches from same file")),
-		OPT_GROUP(""),
-		OPT_CALLBACK('C', "context", &opt, N_("n"),
-			N_("show <n> context lines before and after matches"),
-			context_callback),
-		OPT_INTEGER('B', "before-context", &opt.pre_context,
-			N_("show <n> context lines before matches")),
-		OPT_INTEGER('A', "after-context", &opt.post_context,
-			N_("show <n> context lines after matches")),
-		OPT_INTEGER(0, "threads", &num_threads,
-			N_("use <n> worker threads")),
-		OPT_NUMBER_CALLBACK(&opt, N_("shortcut for -C NUM"),
-			context_callback),
-		OPT_BOOL('p', "show-function", &opt.funcname,
-			N_("show a line with the function name before matches")),
-		OPT_BOOL('W', "function-context", &opt.funcbody,
-			N_("show the surrounding function")),
-		OPT_GROUP(""),
-		OPT_CALLBACK('f', NULL, &opt, N_("file"),
-			N_("read patterns from file"), file_callback),
-		OPT_CALLBACK_F('e', NULL, &opt, N_("pattern"),
-			N_("match <pattern>"), PARSE_OPT_NONEG, pattern_callback),
-		OPT_CALLBACK_F(0, "and", &opt, NULL,
-			N_("combine patterns specified with -e"),
-			PARSE_OPT_NOARG | PARSE_OPT_NONEG, and_callback),
-		OPT_BOOL(0, "or", &dummy, ""),
-		OPT_CALLBACK_F(0, "not", &opt, NULL, "",
-			PARSE_OPT_NOARG | PARSE_OPT_NONEG, not_callback),
-		OPT_CALLBACK_F('(', NULL, &opt, NULL, "",
-			PARSE_OPT_NOARG | PARSE_OPT_NONEG | PARSE_OPT_NODASH,
-			open_callback),
-		OPT_CALLBACK_F(')', NULL, &opt, NULL, "",
-			PARSE_OPT_NOARG | PARSE_OPT_NONEG | PARSE_OPT_NODASH,
-			close_callback),
-		OPT__QUIET(&opt.status_only,
-			   N_("indicate hit with exit status without output")),
-		OPT_BOOL(0, "all-match", &opt.all_match,
-			N_("show only matches from files that match all patterns")),
-		OPT_SET_INT_F(0, "debug", &opt.debug,
-			      N_("show parse tree for grep expression"),
-			      1, PARSE_OPT_HIDDEN),
-		OPT_GROUP(""),
-		{ OPTION_STRING, 'O', "open-files-in-pager", &show_in_pager,
-			N_("pager"), N_("show matching files in the pager"),
-			PARSE_OPT_OPTARG | PARSE_OPT_NOCOMPLETE,
-			NULL, (intptr_t)default_pager },
-		OPT_BOOL_F(0, "ext-grep", &external_grep_allowed__ignored,
-			   N_("allow calling of grep(1) (ignored by this build)"),
-			   PARSE_OPT_NOCOMPLETE),
-		OPT_END()
-	};
-
-	init_grep_defaults(the_repository);
-	git_config(grep_cmd_config, NULL);
-	grep_init(&opt, the_repository, prefix);
-
-	/*
-	 * If there is no -- then the paths must exist in the working
-	 * tree.  If there is no explicit pattern specified with -e or
-	 * -f, we take the first unrecognized non option to be the
-	 * pattern, but then what follows it must be zero or more
-	 * valid refs up to the -- (if exists), and then existing
-	 * paths.  If there is an explicit pattern, then the first
-	 * unrecognized non option is the beginning of the refs list
-	 * that continues up to the -- (if exists), and then paths.
-	 */
-	argc = parse_options(argc, argv, prefix, options, grep_usage,
-			     PARSE_OPT_KEEP_DASHDASH |
-			     PARSE_OPT_STOP_AT_NON_OPTION);
-	grep_commit_pattern_type(pattern_type_arg, &opt);
-
-	if (use_index && !startup_info->have_repository) {
-		int fallback = 0;
-		git_config_get_bool("grep.fallbacktonoindex", &fallback);
-		if (fallback)
-			use_index = 0;
-		else
-			/* die the same way as if we did it at the beginning */
-			setup_git_directory();
-	}
-	/* Ignore --recurse-submodules if --no-index is given or implied */
-	if (!use_index)
-		recurse_submodules = 0;
-
-	/*
-	 * skip a -- separator; we know it cannot be
-	 * separating revisions from pathnames if
-	 * we haven't even had any patterns yet
-	 */
-	if (argc > 0 && !opt.pattern_list && !strcmp(argv[0], "--")) {
-		argv++;
-		argc--;
-	}
-
-	/* First unrecognized non-option token */
-	if (argc > 0 && !opt.pattern_list) {
-		append_grep_pattern(&opt, argv[0], "command line", 0,
-				    GREP_PATTERN);
-		argv++;
-		argc--;
-	}
-
-	if (show_in_pager == default_pager)
-		show_in_pager = git_pager(1);
-	if (show_in_pager) {
-		opt.color = 0;
-		opt.name_only = 1;
-		opt.null_following_name = 1;
-		opt.output_priv = &path_list;
-		opt.output = append_path;
-		string_list_append(&path_list, show_in_pager);
-	}
-
-	if (!opt.pattern_list)
-		die(_("no pattern given"));
-
-	/* --only-matching has no effect with --invert. */
-	if (opt.invert)
-		opt.only_matching = 0;
-
-	/*
-	 * We have to find "--" in a separate pass, because its presence
-	 * influences how we will parse arguments that come before it.
-	 */
-	for (i = 0; i < argc; i++) {
-		if (!strcmp(argv[i], "--")) {
-			seen_dashdash = 1;
-			break;
-		}
-	}
-
-	/*
-	 * Resolve any rev arguments. If we have a dashdash, then everything up
-	 * to it must resolve as a rev. If not, then we stop at the first
-	 * non-rev and assume everything else is a path.
-	 */
-	allow_revs = use_index && !untracked;
-	for (i = 0; i < argc; i++) {
-		const char *arg = argv[i];
-		struct object_id oid;
-		struct object_context oc;
-		struct object *object;
-
-		if (!strcmp(arg, "--")) {
-			i++;
-			break;
-		}
-
-		if (!allow_revs) {
-			if (seen_dashdash)
-				die(_("--no-index or --untracked cannot be used with revs"));
-			break;
-		}
-
-		if (get_oid_with_context(the_repository, arg,
-					 GET_OID_RECORD_PATH,
-					 &oid, &oc)) {
-			if (seen_dashdash)
-				die(_("unable to resolve revision: %s"), arg);
-			break;
-		}
-
-		object = parse_object_or_die(&oid, arg);
-		if (!seen_dashdash)
-			verify_non_filename(prefix, arg);
-		add_object_array_with_path(object, arg, &list, oc.mode, oc.path);
-		free(oc.path);
-	}
-
-	/*
-	 * Anything left over is presumed to be a path. But in the non-dashdash
-	 * "do what I mean" case, we verify and complain when that isn't true.
-	 */
-	if (!seen_dashdash) {
-		int j;
-		for (j = i; j < argc; j++)
-			verify_filename(prefix, argv[j], j == i && allow_revs);
-	}
-
-	parse_pathspec(&pathspec, 0,
-		       PATHSPEC_PREFER_CWD |
-		       (opt.max_depth != -1 ? PATHSPEC_MAXDEPTH_VALID : 0),
-		       prefix, argv + i);
-	pathspec.max_depth = opt.max_depth;
-	pathspec.recursive = 1;
-	pathspec.recurse_submodules = !!recurse_submodules;
-
-	if (recurse_submodules && untracked)
-		die(_("--untracked not supported with --recurse-submodules"));
-
-	if (show_in_pager) {
-		if (num_threads > 1)
-			warning(_("invalid option combination, ignoring --threads"));
-		num_threads = 1;
-	} else if (!HAVE_THREADS && num_threads > 1) {
-		warning(_("no threads support, ignoring --threads"));
-		num_threads = 1;
-	} else if (num_threads < 0)
-		die(_("invalid number of threads specified (%d)"), num_threads);
-	else if (num_threads == 0)
-		num_threads = HAVE_THREADS ? online_cpus() : 1;
-
-	if (num_threads > 1) {
-		if (!HAVE_THREADS)
-			BUG("Somebody got num_threads calculation wrong!");
-		if (!(opt.name_only || opt.unmatch_name_only || opt.count)
-		    && (opt.pre_context || opt.post_context ||
-			opt.file_break || opt.funcbody))
-			skip_first_line = 1;
-
-		/*
-		 * Pre-read gitmodules (if not read already) and force eager
-		 * initialization of packed_git to prevent racy lazy
-		 * reading/initialization once worker threads are started.
-		 */
-		if (recurse_submodules)
-			repo_read_gitmodules(the_repository, 1);
-		if (startup_info->have_repository)
-			(void)get_packed_git(the_repository);
-
-		start_threads(&opt);
-	} else {
-		/*
-		 * The compiled patterns on the main path are only
-		 * used when not using threading. Otherwise
-		 * start_threads() above calls compile_grep_patterns()
-		 * for each thread.
-		 */
-		compile_grep_patterns(&opt);
-	}
-
-	if (show_in_pager && (cached || list.nr))
-		die(_("--open-files-in-pager only works on the worktree"));
-
-	if (show_in_pager && opt.pattern_list && !opt.pattern_list->next) {
-		const char *pager = path_list.items[0].string;
-		int len = strlen(pager);
-
-		if (len > 4 && is_dir_sep(pager[len - 5]))
-			pager += len - 4;
-
-		if (opt.ignore_case && !strcmp("less", pager))
-			string_list_append(&path_list, "-I");
-
-		if (!strcmp("less", pager) || !strcmp("vi", pager)) {
-			struct strbuf buf = STRBUF_INIT;
-			strbuf_addf(&buf, "+/%s%s",
-					strcmp("less", pager) ? "" : "*",
-					opt.pattern_list->pattern);
-			string_list_append(&path_list,
-					   strbuf_detach(&buf, NULL));
-		}
-	}
-
-	if (!show_in_pager && !opt.status_only)
-		setup_pager();
-
-	if (!use_index && (untracked || cached))
-		die(_("--cached or --untracked cannot be used with --no-index"));
-
-	if (!use_index || untracked) {
-		int use_exclude = (opt_exclude < 0) ? use_index : !!opt_exclude;
-		hit = grep_directory(&opt, &pathspec, use_exclude, use_index);
-	} else if (0 <= opt_exclude) {
-		die(_("--[no-]exclude-standard cannot be used for tracked contents"));
-	} else if (!list.nr) {
-		if (!cached)
-			setup_work_tree();
-
-		hit = grep_cache(&opt, &pathspec, cached);
-	} else {
-		if (cached)
-			die(_("both --cached and trees are given"));
-
-		hit = grep_objects(&opt, &pathspec, &list);
-	}
-
-	if (num_threads > 1)
-		hit |= wait_all();
-	if (hit && show_in_pager)
-		run_pager(&opt, prefix);
-	clear_pathspec(&pathspec);
-	free_grep_patterns(&opt);
-	grep_destroy();
-	return !hit;
-}